94 files changed, 3427 insertions, 1292 deletions
diff --git a/OpenSim/Framework/IScene.cs b/OpenSim/Framework/IScene.cs
index a9432c2..87ec99e 100644
--- a/OpenSim/Framework/IScene.cs
+++ b/OpenSim/Framework/IScene.cs
@@ -66,6 +66,19 @@ namespace OpenSim.Framework
        IConfigSource Config { get; }
+        /// <summary>
+        /// Are logins enabled on this simulator?
+        /// </summary>
+        bool LoginsEnabled { get; set; }
+        /// <summary>
+        /// Is this region ready for use?
+        /// </summary>
+        /// <remarks>
+        /// This does not mean that logins are enabled, merely that they can be.
+        /// </remarks>
+        bool Ready { get; set; }
        float TimeDilation { get; }
        bool AllowScriptCrossings { get; }
diff --git a/OpenSim/Framework/Statistics/AssetStatsCollector.cs b/OpenSim/Framework/Monitoring/AssetStatsCollector.cs
index 7082ef3..2a4d45b 100644
--- a/OpenSim/Framework/Statistics/AssetStatsCollector.cs
+++ b/OpenSim/Framework/Monitoring/AssetStatsCollector.cs
@@ -28,7 +28,7 @@
 using System;
 using System.Timers;
-namespace OpenSim.Framework.Statistics
+namespace OpenSim.Framework.Monitoring
 {
    /// <summary>
    /// Asset service statistics collection
diff --git a/OpenSim/Framework/Statistics/BaseStatsCollector.cs b/OpenSim/Framework/Monitoring/BaseStatsCollector.cs
index 3f918f3..9ee0876 100644
--- a/OpenSim/Framework/Statistics/BaseStatsCollector.cs
+++ b/OpenSim/Framework/Monitoring/BaseStatsCollector.cs
@@ -31,8 +31,7 @@ using System.Text;
 using OpenMetaverse;
 using OpenMetaverse.StructuredData;
+namespace OpenSim.Framework.Monitoring
-namespace OpenSim.Framework.Statistics
 {
    /// <summary>
    /// Statistics which all collectors are interested in reporting
diff --git a/OpenSim/Framework/Statistics/Interfaces/IPullStatsProvider.cs b/OpenSim/Framework/Monitoring/Interfaces/IPullStatsProvider.cs
index 430e580..86a6620 100644
--- a/OpenSim/Framework/Statistics/Interfaces/IPullStatsProvider.cs
+++ b/OpenSim/Framework/Monitoring/Interfaces/IPullStatsProvider.cs
@@ -25,7 +25,7 @@
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-namespace OpenSim.Framework.Statistics.Interfaces
+namespace OpenSim.Framework.Monitoring.Interfaces
 {
    /// <summary>
    /// Implemented by objects which allow statistical information to be pulled from them.
diff --git a/OpenSim/Framework/Statistics/Interfaces/IStatsCollector.cs b/OpenSim/Framework/Monitoring/Interfaces/IStatsCollector.cs
index 477bbb3..99f75e3 100644
--- a/OpenSim/Framework/Statistics/Interfaces/IStatsCollector.cs
+++ b/OpenSim/Framework/Monitoring/Interfaces/IStatsCollector.cs
@@ -25,7 +25,7 @@
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-namespace OpenSim.Framework.Statistics
+namespace OpenSim.Framework.Monitoring
 {
    /// <summary>
    /// Implemented by classes which collect up non-viewer statistical information
diff --git a/OpenSim/Framework/Monitoring/MemoryWatchdog.cs b/OpenSim/Framework/Monitoring/MemoryWatchdog.cs
new file mode 100644
index 0000000..a23cf1f
--- /dev/null
+++ b/OpenSim/Framework/Monitoring/MemoryWatchdog.cs
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Threading;
+using log4net;
+namespace OpenSim.Framework.Monitoring
+{
+    /// <summary>
+    /// Experimental watchdog for memory usage.
+    /// </summary>
+    public static class MemoryWatchdog
+    {
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        /// <summary>
+        /// Is this watchdog active?
+        /// </summary>
+        public static bool Enabled
+        {
+            get { return m_enabled; }
+            set
+            {
+//                m_log.DebugFormat("[MEMORY WATCHDOG]: Setting MemoryWatchdog.Enabled to {0}", value);
+                if (value && !m_enabled)
+                    UpdateLastRecord(GC.GetTotalMemory(false), Util.EnvironmentTickCount());
+                m_enabled = value;
+            }
+        }
+        private static bool m_enabled;
+        /// <summary>
+        /// Average memory churn in bytes per millisecond.
+        /// </summary>
+        public static double AverageMemoryChurn
+        {
+            get { if (m_samples.Count > 0) return m_samples.Average(); else return 0; }
+        }
+        /// <summary>
+        /// Maximum number of statistical samples.
+        /// </summary>
+        /// <remarks>
+        /// At the moment this corresponds to 1 minute since the sampling rate is every 2.5 seconds as triggered from
+        /// the main Watchdog.
+        /// </remarks>
+        private static int m_maxSamples = 24;
+        /// <summary>
+        /// Time when the watchdog was last updated.
+        /// </summary>
+        private static int m_lastUpdateTick;
+        /// <summary>
+        /// Memory used at time of last watchdog update.
+        /// </summary>
+        private static long m_lastUpdateMemory;
+        /// <summary>
+        /// Memory churn rate per millisecond.
+        /// </summary>
+//        private static double m_churnRatePerMillisecond;
+        /// <summary>
+        /// Historical samples for calculating moving average.
+        /// </summary>
+        private static Queue<double> m_samples = new Queue<double>(m_maxSamples);
+        public static void Update()
+        {
+            int now = Util.EnvironmentTickCount();
+            long memoryNow = GC.GetTotalMemory(false);
+            long memoryDiff = memoryNow - m_lastUpdateMemory;
+            if (memoryDiff >= 0)
+            {
+                if (m_samples.Count >= m_maxSamples)
+                    m_samples.Dequeue();
+                double elapsed = Util.EnvironmentTickCountSubtract(now, m_lastUpdateTick);
+                // This should never happen since it's not useful for updates to occur with no time elapsed, but
+                // protect ourselves from a divide-by-zero just in case.
+                if (elapsed == 0)
+                    return;
+                m_samples.Enqueue(memoryDiff / (double)elapsed);
+            }
+            UpdateLastRecord(memoryNow, now);
+        }
+        private static void UpdateLastRecord(long memoryNow, int timeNow)
+        {
+            m_lastUpdateMemory = memoryNow;
+            m_lastUpdateTick = timeNow;
+        }
+    }
+}
+\ No newline at end of file
diff --git a/OpenSim/Framework/Statistics/SimExtraStatsCollector.cs b/OpenSim/Framework/Monitoring/SimExtraStatsCollector.cs
index a506e3b..cdd7cc7 100644
--- a/OpenSim/Framework/Statistics/SimExtraStatsCollector.cs
+++ b/OpenSim/Framework/Monitoring/SimExtraStatsCollector.cs
@@ -28,12 +28,11 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
 using OpenMetaverse;
-using OpenSim.Framework.Statistics.Interfaces;
 using OpenMetaverse.StructuredData;
+using OpenSim.Framework.Monitoring.Interfaces;
-namespace OpenSim.Framework.Statistics
+namespace OpenSim.Framework.Monitoring
 {
    /// <summary>
    /// Collects sim statistics which aren't already being collected for the linden viewer's statistics pane
diff --git a/OpenSim/Framework/Statistics/StatsManager.cs b/OpenSim/Framework/Monitoring/StatsManager.cs
index 436ce2f..d78fa6a 100644
--- a/OpenSim/Framework/Statistics/StatsManager.cs
+++ b/OpenSim/Framework/Monitoring/StatsManager.cs
@@ -25,7 +25,7 @@
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
-namespace OpenSim.Framework.Statistics
+namespace OpenSim.Framework.Monitoring
 {
    /// <summary>
    /// Singleton used to provide access to statistics reporters
diff --git a/OpenSim/Framework/Statistics/UserStatsCollector.cs b/OpenSim/Framework/Monitoring/UserStatsCollector.cs
index fd2a9bf..e89c8e6 100644
--- a/OpenSim/Framework/Statistics/UserStatsCollector.cs
+++ b/OpenSim/Framework/Monitoring/UserStatsCollector.cs
@@ -27,7 +27,7 @@
 using System.Timers;
-namespace OpenSim.Framework.Statistics
+namespace OpenSim.Framework.Monitoring
 {
    /// <summary>
    /// Collects user service statistics
diff --git a/OpenSim/Framework/Watchdog.cs b/OpenSim/Framework/Monitoring/Watchdog.cs
index 449d014..e4db964 100644
--- a/OpenSim/Framework/Watchdog.cs
+++ b/OpenSim/Framework/Monitoring/Watchdog.cs
@@ -31,7 +31,7 @@ using System.Linq;
 using System.Threading;
 using log4net;
-namespace OpenSim.Framework
+namespace OpenSim.Framework.Monitoring
 {
    /// <summary>
    /// Manages launching threads and keeping watch over them for timeouts
@@ -325,6 +325,9 @@ namespace OpenSim.Framework
                        callback(callbackInfo);
            }
+            if (MemoryWatchdog.Enabled)
+                MemoryWatchdog.Update();
            m_watchdogTimer.Start();
        }
    }
diff --git a/OpenSim/Framework/RegionInfo.cs b/OpenSim/Framework/RegionInfo.cs
index 1b2f681..4bde7be 100644
--- a/OpenSim/Framework/RegionInfo.cs
+++ b/OpenSim/Framework/RegionInfo.cs
@@ -482,9 +482,16 @@ namespace OpenSim.Framework
                MainConsole.Instance.Output("=====================================\n");
                if (name == String.Empty)
-                    name = MainConsole.Instance.CmdPrompt("New region name", name);
+                {
-                if (name == String.Empty)
+                    while (name.Trim() == string.Empty)
-                    throw new Exception("Cannot interactively create region with no name");
+                    {
+                        name = MainConsole.Instance.CmdPrompt("New region name", name);
+                        if (name.Trim() == string.Empty)
+                        {
+                            MainConsole.Instance.Output("Cannot interactively create region with no name");
+                        }
+                    }
+                }
                source.AddConfig(name);
@@ -515,15 +522,20 @@ namespace OpenSim.Framework
            //
            allKeys.Remove("RegionUUID");
            string regionUUID = config.GetString("RegionUUID", string.Empty);
-            if (regionUUID == String.Empty)
+            if (!UUID.TryParse(regionUUID.Trim(), out RegionID))
            {
                UUID newID = UUID.Random();
+                while (RegionID == UUID.Zero)
-                regionUUID = MainConsole.Instance.CmdPrompt("RegionUUID", newID.ToString());
+                {
+                    regionUUID = MainConsole.Instance.CmdPrompt("RegionUUID", newID.ToString());
+                    if (!UUID.TryParse(regionUUID.Trim(), out RegionID))
+                    {
+                        MainConsole.Instance.Output("RegionUUID must be a valid UUID");
+                    }
+                }
                config.Set("RegionUUID", regionUUID);
            }
-            RegionID = new UUID(regionUUID);
            originRegionID = RegionID; // What IS this?! (Needed for RegionCombinerModule?)
            // Location
diff --git a/OpenSim/Framework/Servers/BaseOpenSimServer.cs b/OpenSim/Framework/Servers/BaseOpenSimServer.cs
index 9a2cd0e..cf19002 100644
--- a/OpenSim/Framework/Servers/BaseOpenSimServer.cs
+++ b/OpenSim/Framework/Servers/BaseOpenSimServer.cs
@@ -40,9 +40,9 @@ using log4net.Core;
 using log4net.Repository;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Framework.Servers;
 using OpenSim.Framework.Servers.HttpServer;
-using OpenSim.Framework.Statistics;
 using Timer=System.Timers.Timer;
 using OpenMetaverse;
diff --git a/OpenSim/Framework/Servers/HttpServer/BaseHttpServer.cs b/OpenSim/Framework/Servers/HttpServer/BaseHttpServer.cs
index 24f986a..e45cb89 100644
--- a/OpenSim/Framework/Servers/HttpServer/BaseHttpServer.cs
+++ b/OpenSim/Framework/Servers/HttpServer/BaseHttpServer.cs
@@ -45,6 +45,7 @@ using OpenMetaverse.StructuredData;
 using CoolHTTPListener = HttpServer.HttpListener;
 using HttpListener=System.Net.HttpListener;
 using LogPrio=HttpServer.LogPrio;
+using OpenSim.Framework.Monitoring;
 namespace OpenSim.Framework.Servers.HttpServer
 {
diff --git a/OpenSim/Framework/Servers/HttpServer/PollServiceRequestManager.cs b/OpenSim/Framework/Servers/HttpServer/PollServiceRequestManager.cs
index a3bd330..a385110 100644
--- a/OpenSim/Framework/Servers/HttpServer/PollServiceRequestManager.cs
+++ b/OpenSim/Framework/Servers/HttpServer/PollServiceRequestManager.cs
@@ -32,6 +32,7 @@ using System.Reflection;
 using log4net;
 using HttpServer;
 using OpenSim.Framework;
+using OpenSim.Framework.Monitoring;
 /*
diff --git a/OpenSim/Framework/Servers/HttpServer/PollServiceWorkerThread.cs b/OpenSim/Framework/Servers/HttpServer/PollServiceWorkerThread.cs
index 1e3fbf0..1c529b6 100644
--- a/OpenSim/Framework/Servers/HttpServer/PollServiceWorkerThread.cs
+++ b/OpenSim/Framework/Servers/HttpServer/PollServiceWorkerThread.cs
@@ -36,6 +36,7 @@ using HttpServer;
 using OpenMetaverse;
 using System.Reflection;
 using log4net;
+using OpenSim.Framework.Monitoring;
 namespace OpenSim.Framework.Servers.HttpServer
 {
diff --git a/OpenSim/Region/Application/OpenSim.cs b/OpenSim/Region/Application/OpenSim.cs
index e6b57c2..ba8aa9f 100644
--- a/OpenSim/Region/Application/OpenSim.cs
+++ b/OpenSim/Region/Application/OpenSim.cs
@@ -40,7 +40,7 @@ using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
 using OpenSim.Framework.Servers;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
@@ -200,9 +200,9 @@ namespace OpenSim
            PrintFileToConsole("startuplogo.txt");
            // For now, start at the 'root' level by default
-            if (m_sceneManager.Scenes.Count == 1) // If there is only one region, select it
+            if (SceneManager.Scenes.Count == 1) // If there is only one region, select it
                ChangeSelectedRegion("region",
-                                     new string[] {"change", "region", m_sceneManager.Scenes[0].RegionInfo.RegionName});
+                                     new string[] {"change", "region", SceneManager.Scenes[0].RegionInfo.RegionName});
            else
                ChangeSelectedRegion("region", new string[] {"change", "region", "root"});
@@ -461,7 +461,7 @@ namespace OpenSim
            if (cmdparams.Length > 4)
                alert = String.Format("\n{0}\n", String.Join(" ", cmdparams, 4, cmdparams.Length - 4));
-            IList agents = m_sceneManager.GetCurrentSceneAvatars();
+            IList agents = SceneManager.GetCurrentSceneAvatars();
            foreach (ScenePresence presence in agents)
            {
@@ -542,7 +542,7 @@ namespace OpenSim
        private void HandleForceUpdate(string module, string[] args)
        {
            MainConsole.Instance.Output("Updating all clients");
-            m_sceneManager.ForceCurrentSceneClientUpdate();
+            SceneManager.ForceCurrentSceneClientUpdate();
        }
        /// <summary>
@@ -554,7 +554,7 @@ namespace OpenSim
        {
            if (args.Length == 6)
            {
-                m_sceneManager.HandleEditCommandOnCurrentScene(args);
+                SceneManager.HandleEditCommandOnCurrentScene(args);
            }
            else
            {
@@ -765,7 +765,7 @@ namespace OpenSim
                    case "load":
                        if (cmdparams.Length > 1)
                        {
-                            foreach (Scene s in new ArrayList(m_sceneManager.Scenes))
+                            foreach (Scene s in new ArrayList(SceneManager.Scenes))
                            {
                                MainConsole.Instance.Output(String.Format("Loading module: {0}", cmdparams[1]));
                                m_moduleLoader.LoadRegionModules(cmdparams[1], s);
@@ -803,14 +803,14 @@ namespace OpenSim
                case "backup":
                    MainConsole.Instance.Output("Triggering save of pending object updates to persistent store");
-                    m_sceneManager.BackupCurrentScene();
+                    SceneManager.BackupCurrentScene();
                    break;
                case "remove-region":
                    string regRemoveName = CombineParams(cmdparams, 0);
                    Scene removeScene;
-                    if (m_sceneManager.TryGetScene(regRemoveName, out removeScene))
+                    if (SceneManager.TryGetScene(regRemoveName, out removeScene))
                        RemoveRegion(removeScene, false);
                    else
                        MainConsole.Instance.Output("No region with that name");
@@ -820,14 +820,14 @@ namespace OpenSim
                    string regDeleteName = CombineParams(cmdparams, 0);
                    Scene killScene;
-                    if (m_sceneManager.TryGetScene(regDeleteName, out killScene))
+                    if (SceneManager.TryGetScene(regDeleteName, out killScene))
                        RemoveRegion(killScene, true);
                    else
                        MainConsole.Instance.Output("no region with that name");
                    break;
                case "restart":
-                    m_sceneManager.RestartCurrentScene();
+                    SceneManager.RestartCurrentScene();
                    break;
            }
        }
@@ -842,7 +842,7 @@ namespace OpenSim
            {
                string newRegionName = CombineParams(cmdparams, 2);
-                if (!m_sceneManager.TrySetCurrentScene(newRegionName))
+                if (!SceneManager.TrySetCurrentScene(newRegionName))
                    MainConsole.Instance.Output(String.Format("Couldn't select region {0}", newRegionName));
            }
            else
@@ -850,7 +850,7 @@ namespace OpenSim
                MainConsole.Instance.Output("Usage: change region <region name>");
            }
-            string regionName = (m_sceneManager.CurrentScene == null ? "root" : m_sceneManager.CurrentScene.RegionInfo.RegionName);
+            string regionName = (SceneManager.CurrentScene == null ? "root" : SceneManager.CurrentScene.RegionInfo.RegionName);
            MainConsole.Instance.Output(String.Format("Currently selected region is {0}", regionName));
 //            m_log.DebugFormat("Original prompt is {0}", m_consolePrompt);
@@ -868,7 +868,7 @@ namespace OpenSim
            });
            m_console.DefaultPrompt = prompt;
-            m_console.ConsoleScene = m_sceneManager.CurrentScene;
+            m_console.ConsoleScene = SceneManager.CurrentScene;
        }
        /// <summary>
@@ -892,7 +892,7 @@ namespace OpenSim
                        int newDebug;
                        if (int.TryParse(args[2], out newDebug))
                        {
-                            m_sceneManager.SetDebugPacketLevelOnCurrentScene(newDebug, name);
+                            SceneManager.SetDebugPacketLevelOnCurrentScene(newDebug, name);
                            // We provide user information elsewhere if any clients had their debug level set.
 //                            MainConsole.Instance.OutputFormat("Debug packet level set to {0}", newDebug);
                        }
@@ -907,7 +907,7 @@ namespace OpenSim
                case "scene":
                    if (args.Length == 4)
                    {
-                        if (m_sceneManager.CurrentScene == null)
+                        if (SceneManager.CurrentScene == null)
                        {
                            MainConsole.Instance.Output("Please use 'change region <regioname>' first");
                        }
@@ -915,7 +915,7 @@ namespace OpenSim
                        {
                            string key = args[2];
                            string value = args[3];
-                            m_sceneManager.CurrentScene.SetSceneCoreDebug(
+                            SceneManager.CurrentScene.SetSceneCoreDebug(
                                new Dictionary<string, string>() { { key, value } });
                            MainConsole.Instance.OutputFormat("Set debug scene {0} = {1}", key, value);
@@ -954,10 +954,10 @@ namespace OpenSim
                    IList agents;
                    if (showParams.Length > 1 && showParams[1] == "full")
                    {
-                        agents = m_sceneManager.GetCurrentScenePresences();
+                        agents = SceneManager.GetCurrentScenePresences();
                    } else
                    {
-                        agents = m_sceneManager.GetCurrentSceneAvatars();
+                        agents = SceneManager.GetCurrentSceneAvatars();
                    }
                
                    MainConsole.Instance.Output(String.Format("\nAgents connected: {0}\n", agents.Count));
@@ -1037,7 +1037,7 @@ namespace OpenSim
                        MainConsole.Instance.Output("Shared Module: " + module.Name);
                    }
-                    m_sceneManager.ForEachScene(
+                    SceneManager.ForEachScene(
                        delegate(Scene scene) {
                        m_log.Error("The currently loaded modules in " + scene.RegionInfo.RegionName + " are:");
                        foreach (IRegionModule module in scene.Modules.Values)
@@ -1050,7 +1050,7 @@ namespace OpenSim
                    }
                    );
-                    m_sceneManager.ForEachScene(
+                    SceneManager.ForEachScene(
                        delegate(Scene scene) {
                        MainConsole.Instance.Output("Loaded new region modules in" + scene.RegionInfo.RegionName + " are:");
                        foreach (IRegionModuleBase module in scene.RegionModules.Values)
@@ -1066,7 +1066,7 @@ namespace OpenSim
                    break;
                case "regions":
-                    m_sceneManager.ForEachScene(
+                    SceneManager.ForEachScene(
                        delegate(Scene scene)
                            {
                                MainConsole.Instance.Output(String.Format(
@@ -1080,7 +1080,7 @@ namespace OpenSim
                    break;
                case "ratings":
-                    m_sceneManager.ForEachScene(
+                    SceneManager.ForEachScene(
                    delegate(Scene scene)
                    {
                        string rating = "";
@@ -1115,7 +1115,7 @@ namespace OpenSim
            cdt.AddColumn("IP", 16);
            cdt.AddColumn("Viewer Name", 24);
-            m_sceneManager.ForEachScene(
+            SceneManager.ForEachScene(
                s =>
                {
                    foreach (AgentCircuitData aCircuit in s.AuthenticateHandler.GetAgentCircuits().Values)
@@ -1140,13 +1140,13 @@ namespace OpenSim
            cdt.AddColumn("Endpoint", 23);
            cdt.AddColumn("Active?", 7);
-            m_sceneManager.ForEachScene(
+            SceneManager.ForEachScene(
                s => s.ForEachClient(
                    c => cdt.AddRow(
                        s.Name,
                        c.Name,
-                        c.RemoteEndPoint.ToString(),
                        c.CircuitCode.ToString(),
+                        c.RemoteEndPoint.ToString(),                
                        c.IsActive.ToString())));
            MainConsole.Instance.Output(cdt.ToString());
@@ -1161,11 +1161,11 @@ namespace OpenSim
        {
            if (cmdparams.Length > 5)
            {
-                m_sceneManager.SaveNamedPrimsToXml2(cmdparams[3], cmdparams[4]);
+                SceneManager.SaveNamedPrimsToXml2(cmdparams[3], cmdparams[4]);
            }
            else
            {
-                m_sceneManager.SaveNamedPrimsToXml2("Primitive", DEFAULT_PRIM_BACKUP_FILENAME);
+                SceneManager.SaveNamedPrimsToXml2("Primitive", DEFAULT_PRIM_BACKUP_FILENAME);
            }
        }
@@ -1180,11 +1180,11 @@ namespace OpenSim
            if (cmdparams.Length > 0)
            {
-                m_sceneManager.SaveCurrentSceneToXml(cmdparams[2]);
+                SceneManager.SaveCurrentSceneToXml(cmdparams[2]);
            }
            else
            {
-                m_sceneManager.SaveCurrentSceneToXml(DEFAULT_PRIM_BACKUP_FILENAME);
+                SceneManager.SaveCurrentSceneToXml(DEFAULT_PRIM_BACKUP_FILENAME);
            }
        }
@@ -1221,13 +1221,13 @@ namespace OpenSim
                        MainConsole.Instance.Output(String.Format("loadOffsets <X,Y,Z> = <{0},{1},{2}>",loadOffset.X,loadOffset.Y,loadOffset.Z));
                    }
                }
-                m_sceneManager.LoadCurrentSceneFromXml(cmdparams[0], generateNewIDS, loadOffset);
+                SceneManager.LoadCurrentSceneFromXml(cmdparams[2], generateNewIDS, loadOffset);
            }
            else
            {
                try
                {
-                    m_sceneManager.LoadCurrentSceneFromXml(DEFAULT_PRIM_BACKUP_FILENAME, false, loadOffset);
+                    SceneManager.LoadCurrentSceneFromXml(DEFAULT_PRIM_BACKUP_FILENAME, false, loadOffset);
                }
                catch (FileNotFoundException)
                {
@@ -1244,11 +1244,11 @@ namespace OpenSim
        {
            if (cmdparams.Length > 2)
            {
-                m_sceneManager.SaveCurrentSceneToXml2(cmdparams[2]);
+                SceneManager.SaveCurrentSceneToXml2(cmdparams[2]);
            }
            else
            {
-                m_sceneManager.SaveCurrentSceneToXml2(DEFAULT_PRIM_BACKUP_FILENAME);
+                SceneManager.SaveCurrentSceneToXml2(DEFAULT_PRIM_BACKUP_FILENAME);
            }
        }
@@ -1263,7 +1263,7 @@ namespace OpenSim
            {
                try
                {
-                    m_sceneManager.LoadCurrentSceneFromXml2(cmdparams[2]);
+                    SceneManager.LoadCurrentSceneFromXml2(cmdparams[2]);
                }
                catch (FileNotFoundException)
                {
@@ -1274,7 +1274,7 @@ namespace OpenSim
            {
                try
                {
-                    m_sceneManager.LoadCurrentSceneFromXml2(DEFAULT_PRIM_BACKUP_FILENAME);
+                    SceneManager.LoadCurrentSceneFromXml2(DEFAULT_PRIM_BACKUP_FILENAME);
                }
                catch (FileNotFoundException)
                {
@@ -1291,7 +1291,7 @@ namespace OpenSim
        {
            try
            {
-                m_sceneManager.LoadArchiveToCurrentScene(cmdparams);
+                SceneManager.LoadArchiveToCurrentScene(cmdparams);
            }
            catch (Exception e)
            {
@@ -1305,7 +1305,7 @@ namespace OpenSim
        /// <param name="cmdparams"></param>
        protected void SaveOar(string module, string[] cmdparams)
        {
-            m_sceneManager.SaveCurrentSceneToArchive(cmdparams);
+            SceneManager.SaveCurrentSceneToArchive(cmdparams);
        }
        private static string CombineParams(string[] commandParams, int pos)
diff --git a/OpenSim/Region/Application/OpenSimBase.cs b/OpenSim/Region/Application/OpenSimBase.cs
index 76ac246..aed10f6 100644
--- a/OpenSim/Region/Application/OpenSimBase.cs
+++ b/OpenSim/Region/Application/OpenSimBase.cs
@@ -40,7 +40,7 @@ using OpenSim.Framework.Communications;
 using OpenSim.Framework.Console;
 using OpenSim.Framework.Servers;
 using OpenSim.Framework.Servers.HttpServer;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.ClientStack;
 using OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts;
 using OpenSim.Region.Framework;
@@ -300,7 +300,7 @@ namespace OpenSim
        private void HandleCommanderCommand(string module, string[] cmd)
        {
-            m_sceneManager.SendCommandToPluginModules(cmd);
+            SceneManager.SendCommandToPluginModules(cmd);
        }
        private void HandleCommanderHelp(string module, string[] cmd)
@@ -318,7 +318,10 @@ namespace OpenSim
            // Called from base.StartUp()
            m_httpServerPort = m_networkServersInfo.HttpListenerPort;
-            m_sceneManager.OnRestartSim += handleRestartRegion;
+            SceneManager.OnRestartSim += handleRestartRegion;
+            // Only start the memory watchdog once all regions are ready
+            SceneManager.OnRegionsReadyStatusChange += sm => MemoryWatchdog.Enabled = sm.AllRegionsReady;
        }
        /// <summary>
@@ -480,7 +483,7 @@ namespace OpenSim
                scene.SnmpService.BootInfo("ScriptEngine started", scene);
            }
-            m_sceneManager.Add(scene);
+            SceneManager.Add(scene);
            if (m_autoCreateClientStack)
            {
@@ -510,7 +513,6 @@ namespace OpenSim
            }
            scene.Start();
            scene.StartScripts();
            return clientServer;
@@ -644,14 +646,14 @@ namespace OpenSim
        {
            // only need to check this if we are not at the
            // root level
-            if ((m_sceneManager.CurrentScene != null) &&
+            if ((SceneManager.CurrentScene != null) &&
-                (m_sceneManager.CurrentScene.RegionInfo.RegionID == scene.RegionInfo.RegionID))
+                (SceneManager.CurrentScene.RegionInfo.RegionID == scene.RegionInfo.RegionID))
            {
-                m_sceneManager.TrySetCurrentScene("..");
+                SceneManager.TrySetCurrentScene("..");
            }
            scene.DeleteAllSceneObjects();
-            m_sceneManager.CloseScene(scene);
+            SceneManager.CloseScene(scene);
            ShutdownClientServer(scene.RegionInfo);
            
            if (!cleanup)
@@ -693,7 +695,7 @@ namespace OpenSim
        public void RemoveRegion(string name, bool cleanUp)
        {
            Scene target;
-            if (m_sceneManager.TryGetScene(name, out target))
+            if (SceneManager.TryGetScene(name, out target))
                RemoveRegion(target, cleanUp);
        }
@@ -706,13 +708,13 @@ namespace OpenSim
        {
            // only need to check this if we are not at the
            // root level
-            if ((m_sceneManager.CurrentScene != null) &&
+            if ((SceneManager.CurrentScene != null) &&
-                (m_sceneManager.CurrentScene.RegionInfo.RegionID == scene.RegionInfo.RegionID))
+                (SceneManager.CurrentScene.RegionInfo.RegionID == scene.RegionInfo.RegionID))
            {
-                m_sceneManager.TrySetCurrentScene("..");
+                SceneManager.TrySetCurrentScene("..");
            }
-            m_sceneManager.CloseScene(scene);
+            SceneManager.CloseScene(scene);
            ShutdownClientServer(scene.RegionInfo);
        }
        
@@ -724,7 +726,7 @@ namespace OpenSim
        public void CloseRegion(string name)
        {
            Scene target;
-            if (m_sceneManager.TryGetScene(name, out target))
+            if (SceneManager.TryGetScene(name, out target))
                CloseRegion(target);
        }
        
@@ -781,6 +783,7 @@ namespace OpenSim
            scene.LoadWorldMap();
            scene.PhysicsScene = GetPhysicsScene(scene.RegionInfo.RegionName);
+            scene.PhysicsScene.RequestAssetMethod = scene.PhysicsRequestAsset;
            scene.PhysicsScene.SetTerrain(scene.Heightmap.GetFloatsSerialised());
            scene.PhysicsScene.SetWaterLevel((float) regionInfo.RegionSettings.WaterHeight);
@@ -980,7 +983,7 @@ namespace OpenSim
            try
            {
-                m_sceneManager.Close();
+                SceneManager.Close();
            }
            catch (Exception e)
            {
@@ -1005,7 +1008,7 @@ namespace OpenSim
        /// <param name="usernum">The first out parameter describing the number of all the avatars in the Region server</param>
        public void GetAvatarNumber(out int usernum)
        {
-            usernum = m_sceneManager.GetCurrentSceneAvatars().Count;
+            usernum = SceneManager.GetCurrentSceneAvatars().Count;
        }
        /// <summary>
@@ -1014,7 +1017,7 @@ namespace OpenSim
        /// <param name="regionnum">The first out parameter describing the number of regions</param>
        public void GetRegionNumber(out int regionnum)
        {
-            regionnum = m_sceneManager.Scenes.Count;
+            regionnum = SceneManager.Scenes.Count;
        }
        
        /// <summary>
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
index ad9074c..f7bb817 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLClientView.cs
@@ -41,7 +41,7 @@ using OpenMetaverse.Messages.Linden;
 using OpenMetaverse.StructuredData;
 using OpenSim.Framework;
 using OpenSim.Framework.Client;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Services.Interfaces;
@@ -355,8 +355,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
        private int m_animationSequenceNumber = 1;
        private bool m_SendLogoutPacketWhenClosing = true;
        private AgentUpdateArgs lastarg;
-        private bool m_IsActive = true;
-        private bool m_IsLoggingOut = false;
        protected Dictionary<PacketType, PacketProcessor> m_packetHandlers = new Dictionary<PacketType, PacketProcessor>();
        protected Dictionary<string, GenericMessage> m_genericPacketHandlers = new Dictionary<string, GenericMessage>(); //PauPaw:Local Generic Message handlers
@@ -428,16 +426,19 @@ namespace OpenSim.Region.ClientStack.LindenUDP
        public uint CircuitCode { get { return m_circuitCode; } }
        public int MoneyBalance { get { return m_moneyBalance; } }
        public int NextAnimationSequenceNumber { get { return m_animationSequenceNumber++; } }
-        public bool IsActive
-        {
+        /// <summary>
-            get { return m_IsActive; }
+        /// As well as it's function in IClientAPI, in LLClientView we are locking on this property in order to
-            set { m_IsActive = value; }
+        /// prevent race conditions by different threads calling Close().
-        }
+        /// </summary>
-        public bool IsLoggingOut
+        public bool IsActive { get; set; }
-        {
-            get { return m_IsLoggingOut; }
+        /// <summary>
-            set { m_IsLoggingOut = value; }
+        /// Used to synchronise threads when client is being closed.
-        }
+        /// </summary>
+        public Object CloseSyncLock { get; private set; }
+        public bool IsLoggingOut { get; set; }
        public bool DisableFacelights
        {
@@ -462,6 +463,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
        {
 //            DebugPacketLevel = 1;
+            CloseSyncLock = new Object();
            RegisterInterface<IClientIM>(this);
            RegisterInterface<IClientInventory>(this);
            RegisterInterface<IClientChat>(this);
@@ -494,13 +497,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
            m_prioritizer = new Prioritizer(m_scene);
            RegisterLocalPacketHandlers();
+            IsActive = true;
        }
        #region Client Methods
        /// <summary>
-        /// Shut down the client view
+        /// Close down the client view
        /// </summary>
        public void Close()
        {
@@ -513,7 +518,29 @@ namespace OpenSim.Region.ClientStack.LindenUDP
        public void Close(bool sendStop)
        {
            IsActive = false;
+            // We lock here to prevent race conditions between two threads calling close simultaneously (e.g.
+            // a simultaneous relog just as a client is being closed out due to no packet ack from the old connection.
+            lock (CloseSyncLock)
+            {
+                if (!IsActive)
+                    return;
+                IsActive = false;
+                CloseWithoutChecks(sendStop);
+            }
+        }
+        /// <summary>
+        /// Closes down the client view without first checking whether it is active.
+        /// </summary>
+        /// <remarks>
+        /// This exists because LLUDPServer has to set IsActive = false in earlier synchronous code before calling
+        /// CloseWithoutIsActiveCheck asynchronously.
+        ///
+        /// Callers must lock ClosingSyncLock before calling.
+        /// </remarks>
+        public void CloseWithoutChecks(bool sendStop)
+        {
            m_log.DebugFormat(
                "[CLIENT]: Close has been called for {0} attached to scene {1}",
                Name, m_scene.RegionInfo.RegionName);
@@ -3634,7 +3661,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
        public void SendCoarseLocationUpdate(List<UUID> users, List<Vector3> CoarseLocations)
        {
-            if (!IsActive) return; // We don't need to update inactive clients.
+            // We don't need to update inactive clients.
+            if (!IsActive)
+                return;
            CoarseLocationUpdatePacket loc = (CoarseLocationUpdatePacket)PacketPool.Instance.GetPacket(PacketType.CoarseLocationUpdate);
            loc.Header.Reliable = false;
@@ -5267,7 +5296,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
            AddLocalPacketHandler(PacketType.ChatFromViewer, HandleChatFromViewer);
            AddLocalPacketHandler(PacketType.AvatarPropertiesUpdate, HandlerAvatarPropertiesUpdate);
            AddLocalPacketHandler(PacketType.ScriptDialogReply, HandlerScriptDialogReply);
-            AddLocalPacketHandler(PacketType.ImprovedInstantMessage, HandlerImprovedInstantMessage, false);
+            AddLocalPacketHandler(PacketType.ImprovedInstantMessage, HandlerImprovedInstantMessage);
            AddLocalPacketHandler(PacketType.AcceptFriendship, HandlerAcceptFriendship);
            AddLocalPacketHandler(PacketType.DeclineFriendship, HandlerDeclineFriendship);
            AddLocalPacketHandler(PacketType.TerminateFriendship, HandlerTerminateFriendship);
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPClient.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPClient.cs
index ae72175..c472176 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPClient.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPClient.cs
@@ -279,7 +279,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
        public string GetStats()
        {
            return string.Format(
-                "{0,7} {1,7} {2,7} {3,9} {4,7} {5,7} {6,7} {7,7} {8,7} {9,8} {10,7} {11,7}",
+                "{0,7} {1,7} {2,7} {3,9} {4,7} {5,7} {6,7} {7,7} {8,7} {9,8} {10,7} {11,7} {12,7}",
+                Util.EnvironmentTickCountSubtract(TickLastPacketReceived),
                PacketsReceived,                                 
                PacketsSent,
                PacketsResent,
diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
index b09f607..6c2e71b 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
@@ -37,7 +37,7 @@ using log4net;
 using Nini.Config;
 using OpenMetaverse.Packets;
 using OpenSim.Framework;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Scenes;
 using OpenMetaverse;
@@ -1181,22 +1181,21 @@ namespace OpenSim.Region.ClientStack.LindenUDP
        /// regular client pings.
        /// </remarks>
        /// <param name='client'></param>
-        private void DeactivateClientDueToTimeout(IClientAPI client)
+        private void DeactivateClientDueToTimeout(LLClientView client)
        {
-            // We must set IsActive synchronously so that we can stop the packet loop reinvoking this method, even
+            lock (client.CloseSyncLock)
-            // though it's set later on by LLClientView.Close()
+            {
-            client.IsActive = false;
+                m_log.WarnFormat(
+                    "[LLUDPSERVER]: Ack timeout, disconnecting {0} agent for {1} in {2}",
-            m_log.WarnFormat(
+                    client.SceneAgent.IsChildAgent ? "child" : "root", client.Name, m_scene.RegionInfo.RegionName);
-                "[LLUDPSERVER]: Ack timeout, disconnecting {0} agent for {1} in {2}",
+    
-                client.SceneAgent.IsChildAgent ? "child" : "root", client.Name, m_scene.RegionInfo.RegionName);
+                StatsManager.SimExtraStats.AddAbnormalClientThreadTermination();
+    
-            StatsManager.SimExtraStats.AddAbnormalClientThreadTermination();
+                if (!client.SceneAgent.IsChildAgent)
+                     client.Kick("Simulator logged you out due to connection timeout");
-            if (!client.SceneAgent.IsChildAgent)
+    
-                 client.Kick("Simulator logged you out due to connection timeout");
+                client.CloseWithoutChecks(true);
+            }
-            Util.FireAndForget(o => client.Close());
        }
        private void IncomingPacketHandler()
diff --git a/OpenSim/Region/ClientStack/RegionApplicationBase.cs b/OpenSim/Region/ClientStack/RegionApplicationBase.cs
index c4324e8..4672f8a 100644
--- a/OpenSim/Region/ClientStack/RegionApplicationBase.cs
+++ b/OpenSim/Region/ClientStack/RegionApplicationBase.cs
@@ -53,9 +53,8 @@ namespace OpenSim.Region.ClientStack
        protected ISimulationDataService m_simulationDataService;
        protected IEstateDataService m_estateDataService;
        protected ClientStackManager m_clientStackManager;
-        protected SceneManager m_sceneManager = new SceneManager();
-        public SceneManager SceneManager { get { return m_sceneManager; } }
+        public SceneManager SceneManager { get; protected set; }
        public NetworkServersInfo NetServersInfo { get { return m_networkServersInfo; } }
        public ISimulationDataService SimulationDataService { get { return m_simulationDataService; } }
        public IEstateDataService EstateDataService { get { return m_estateDataService; } }
@@ -77,6 +76,7 @@ namespace OpenSim.Region.ClientStack
        protected override void StartupSpecific()
        {
+            SceneManager = new SceneManager();
            m_clientStackManager = CreateClientStackManager();
            Initialize();
diff --git a/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs b/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
index 31e8a2e..b588704 100644
--- a/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
@@ -626,10 +626,12 @@ namespace OpenSim.Region.CoreModules.Avatar.Attachments
                    m_scene.InventoryService.UpdateItem(item);
-                    // this gets called when the agent logs off!
+                    // If the name of the object has been changed whilst attached then we want to update the inventory
+                    // item in the viewer.
                    if (sp.ControllingClient != null)
                        sp.ControllingClient.SendInventoryItemCreateUpdate(item, 0);
                }
                grp.HasGroupChanged = false; // Prevent it being saved over and over
            }
 //            else
diff --git a/OpenSim/Region/CoreModules/Avatar/Attachments/Tests/AttachmentsModuleTests.cs b/OpenSim/Region/CoreModules/Avatar/Attachments/Tests/AttachmentsModuleTests.cs
index cd1e1c1..273e290 100644
--- a/OpenSim/Region/CoreModules/Avatar/Attachments/Tests/AttachmentsModuleTests.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Attachments/Tests/AttachmentsModuleTests.cs
@@ -47,6 +47,7 @@ using OpenSim.Region.CoreModules.ServiceConnectorsOut.Simulation;
 using OpenSim.Region.CoreModules.World.Serialiser;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.ScriptEngine.Interfaces;
 using OpenSim.Region.ScriptEngine.XEngine;
 using OpenSim.Services.Interfaces;
 using OpenSim.Tests.Common;
@@ -289,21 +290,37 @@ namespace OpenSim.Region.CoreModules.Avatar.Attachments.Tests
        {
            TestHelpers.InMethod();
-            Scene scene = CreateTestScene();
+            Scene scene = CreateScriptingEnabledTestScene();
            UserAccount ua1 = UserAccountHelpers.CreateUserWithInventory(scene, 0x1);
-            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1.PrincipalID);
+            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1);
            SceneObjectGroup so = SceneHelpers.CreateSceneObject(1, sp.UUID, "att-name", 0x10);
-            TaskInventoryHelpers.AddScript(scene, so.RootPart);
+            TaskInventoryItem scriptItem
+                = TaskInventoryHelpers.AddScript(
+                    scene,
+                    so.RootPart,
+                    "scriptItem",
+                    "default { attach(key id) { if (id != NULL_KEY) { llSay(0, \"Hello World\"); } } }");
            InventoryItemBase userItem = UserInventoryHelpers.AddInventoryItem(scene, so, 0x100, 0x1000);
+            // FIXME: Right now, we have to do a tricksy chat listen to make sure we know when the script is running.
+            // In the future, we need to be able to do this programatically more predicably.
+            scene.EventManager.OnChatFromWorld += OnChatFromWorld;
            scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, userItem.ID, (uint)AttachmentPoint.Chest);
+            m_chatEvent.WaitOne(60000);
            // TODO: Need to have a test that checks the script is actually started but this involves a lot more
            // plumbing of the script engine and either pausing for events or more infrastructure to turn off various
            // script engine delays/asychronicity that isn't helpful in an automated regression testing context.
            SceneObjectGroup attSo = scene.GetSceneObjectGroup(so.Name);
            Assert.That(attSo.ContainsScripts(), Is.True);
+            TaskInventoryItem reRezzedScriptItem = attSo.RootPart.Inventory.GetInventoryItem(scriptItem.Name);
+            IScriptModule xengine = scene.RequestModuleInterface<IScriptModule>();
+            Assert.That(xengine.GetScriptState(reRezzedScriptItem.ItemID), Is.True);
        }
        [Test]
@@ -379,29 +396,49 @@ namespace OpenSim.Region.CoreModules.Avatar.Attachments.Tests
            ScenePresence sp = SceneHelpers.AddScenePresence(scene, ua1);
            SceneObjectGroup so = SceneHelpers.CreateSceneObject(1, sp.UUID, "att-name", 0x10);
-            TaskInventoryHelpers.AddScript(scene, so.RootPart);
+            TaskInventoryItem scriptTaskItem
+                = TaskInventoryHelpers.AddScript(
+                    scene,
+                    so.RootPart,
+                    "scriptItem",
+                    "default { attach(key id) { if (id != NULL_KEY) { llSay(0, \"Hello World\"); } } }");
            InventoryItemBase userItem = UserInventoryHelpers.AddInventoryItem(scene, so, 0x100, 0x1000);
            // FIXME: Right now, we have to do a tricksy chat listen to make sure we know when the script is running.
            // In the future, we need to be able to do this programatically more predicably.
            scene.EventManager.OnChatFromWorld += OnChatFromWorld;
-            SceneObjectGroup soRezzed
+            SceneObjectGroup rezzedSo
-                = (SceneObjectGroup)scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, userItem.ID, (uint)AttachmentPoint.Chest);
+                = (SceneObjectGroup)(scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, userItem.ID, (uint)AttachmentPoint.Chest));
            // Wait for chat to signal rezzed script has been started.
            m_chatEvent.WaitOne(60000);
-            scene.AttachmentsModule.DetachSingleAttachmentToInv(sp, soRezzed);
+            scene.AttachmentsModule.DetachSingleAttachmentToInv(sp, rezzedSo);
            InventoryItemBase userItemUpdated = scene.InventoryService.GetItem(userItem);
            AssetBase asset = scene.AssetService.Get(userItemUpdated.AssetID.ToString());
+            // TODO: It would probably be better here to check script state via the saving and retrieval of state
+            // information at a higher level, rather than having to inspect the serialization.
            XmlDocument soXml = new XmlDocument();
            soXml.LoadXml(Encoding.UTF8.GetString(asset.Data));
            XmlNodeList scriptStateNodes = soXml.GetElementsByTagName("ScriptState");
            Assert.That(scriptStateNodes.Count, Is.EqualTo(1));
+            // Re-rez the attachment to check script running state
+            SceneObjectGroup reRezzedSo = (SceneObjectGroup)(scene.AttachmentsModule.RezSingleAttachmentFromInventory(sp, userItem.ID, (uint)AttachmentPoint.Chest));
+            // Wait for chat to signal rezzed script has been started.
+            m_chatEvent.WaitOne(60000);
+            TaskInventoryItem reRezzedScriptItem = reRezzedSo.RootPart.Inventory.GetInventoryItem(scriptTaskItem.Name);
+            IScriptModule xengine = scene.RequestModuleInterface<IScriptModule>();
+            Assert.That(xengine.GetScriptState(reRezzedScriptItem.ItemID), Is.True);
+//            Console.WriteLine(soXml.OuterXml);
        }
        /// <summary>
diff --git a/OpenSim/Region/CoreModules/Avatar/Commands/UserCommandsModule.cs b/OpenSim/Region/CoreModules/Avatar/Commands/UserCommandsModule.cs
index 4bcd2ac..764adf9 100644
--- a/OpenSim/Region/CoreModules/Avatar/Commands/UserCommandsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Commands/UserCommandsModule.cs
@@ -37,7 +37,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/CoreModules/Avatar/Groups/GroupsModule.cs b/OpenSim/Region/CoreModules/Avatar/Groups/GroupsModule.cs
index 31363e5..b258e13 100644
--- a/OpenSim/Region/CoreModules/Avatar/Groups/GroupsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Groups/GroupsModule.cs
@@ -96,7 +96,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Groups
            scene.EventManager.OnNewClient += OnNewClient;
            scene.EventManager.OnClientClosed += OnClientClosed;
-            scene.EventManager.OnIncomingInstantMessage += OnGridInstantMessage;
+//            scene.EventManager.OnIncomingInstantMessage += OnGridInstantMessage;
        }
        public void PostInitialise()
@@ -133,7 +133,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Groups
        private void OnNewClient(IClientAPI client)
        {
            // Subscribe to instant messages
-            client.OnInstantMessage += OnInstantMessage;
+//            client.OnInstantMessage += OnInstantMessage;
            client.OnAgentDataUpdateRequest += OnAgentDataUpdateRequest;
            client.OnUUIDGroupNameRequest += HandleUUIDGroupNameRequest;
            lock (m_ClientMap)
@@ -171,15 +171,15 @@ namespace OpenSim.Region.CoreModules.Avatar.Groups
                                             ActiveGroupTitle);
        }
-        private void OnInstantMessage(IClientAPI client, GridInstantMessage im)
+//        private void OnInstantMessage(IClientAPI client, GridInstantMessage im)
-        {
+//        {
-        }
+//        }
-        private void OnGridInstantMessage(GridInstantMessage msg)
+//        private void OnGridInstantMessage(GridInstantMessage msg)
-        {
+//        {
-            // Trigger the above event handler
+//            // Trigger the above event handler
-            OnInstantMessage(null, msg);
+//            OnInstantMessage(null, msg);
-        }
+//        }
        private void HandleUUIDGroupNameRequest(UUID id,IClientAPI remote_client)
        {
diff --git a/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs b/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
index 6064ddc..1406aae 100644
--- a/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/InstantMessage/MessageTransferModule.cs
@@ -141,13 +141,15 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
            foreach (Scene scene in m_Scenes)
            {
 //                m_log.DebugFormat(
-//                    "[INSTANT MESSAGE]: Looking for root agent {0} in {1}", 
+//                    "[INSTANT MESSAGE]: Looking for root agent {0} in {1}",
 //                    toAgentID.ToString(), scene.RegionInfo.RegionName);
                ScenePresence sp = scene.GetScenePresence(toAgentID);
                if (sp != null && !sp.IsChildAgent)
                {
                    // Local message
-//                    m_log.DebugFormat("[INSTANT MESSAGE]: Delivering IM to root agent {0} {1}", user.Name, toAgentID);
+                    m_log.DebugFormat("[INSTANT MESSAGE]: Delivering IM to root agent {0} {1}", sp.Name, toAgentID);
                    sp.ControllingClient.SendInstantMessage(im);
                    // Message sent
@@ -159,13 +161,15 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
            // try child avatar second
            foreach (Scene scene in m_Scenes)
            {
-//                m_log.DebugFormat(
+                m_log.DebugFormat(
-//                    "[INSTANT MESSAGE]: Looking for child of {0} in {1}", toAgentID, scene.RegionInfo.RegionName);
+                    "[INSTANT MESSAGE]: Looking for child of {0} in {1}", toAgentID, scene.RegionInfo.RegionName);
                ScenePresence sp = scene.GetScenePresence(toAgentID);
                if (sp != null)
                {
                    // Local message
-//                    m_log.DebugFormat("[INSTANT MESSAGE]: Delivering IM to child agent {0} {1}", user.Name, toAgentID);
+                    m_log.DebugFormat("[INSTANT MESSAGE]: Delivering IM to child agent {0} {1}", sp.Name, toAgentID);
                    sp.ControllingClient.SendInstantMessage(im);
                    // Message sent
@@ -174,10 +178,9 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
                }
            }
-//            m_log.DebugFormat("[INSTANT MESSAGE]: Delivering IM to {0} via XMLRPC", im.toAgentID);
+            m_log.DebugFormat("[INSTANT MESSAGE]: Delivering IM to {0} via XMLRPC", im.toAgentID);
-            SendGridInstantMessageViaXMLRPC(im, result);
-            return;
+            SendGridInstantMessageViaXMLRPC(im, result);
        }
        private void HandleUndeliveredMessage(GridInstantMessage im, MessageResultNotification result)
diff --git a/OpenSim/Region/CoreModules/Avatar/Inventory/Transfer/InventoryTransferModule.cs b/OpenSim/Region/CoreModules/Avatar/Inventory/Transfer/InventoryTransferModule.cs
index 80554fb..81de29c 100644
--- a/OpenSim/Region/CoreModules/Avatar/Inventory/Transfer/InventoryTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Inventory/Transfer/InventoryTransferModule.cs
@@ -313,8 +313,9 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Transfer
                        m_TransferModule.SendInstantMessage(im, delegate(bool success) {});
                }
            }
-            else if (im.dialog == (byte) InstantMessageDialog.InventoryDeclined ||
+            else if (
-                     im.dialog == (byte) InstantMessageDialog.TaskInventoryDeclined)
+                im.dialog == (byte)InstantMessageDialog.InventoryDeclined
+                || im.dialog == (byte)InstantMessageDialog.TaskInventoryDeclined)
            {
                // Here, the recipient is local and we can assume that the
                // inventory is loaded. Courtesy of the above bulk update,
diff --git a/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs b/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
index d30c2e2..9a56f42 100644
--- a/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/InventoryAccess/InventoryAccessModule.cs
@@ -204,8 +204,9 @@ namespace OpenSim.Region.CoreModules.Framework.InventoryAccess
                    AssetBase asset = m_Scene.CreateAsset(name, description, assetType, data, remoteClient.AgentId);
                    m_Scene.AssetService.Store(asset);
+                    m_Scene.CreateNewInventoryItem(
-                    m_Scene.CreateNewInventoryItem(remoteClient, remoteClient.AgentId.ToString(), string.Empty, folderID, asset.Name, 0, callbackID, asset, invType, nextOwnerMask, creationDate);
+                        remoteClient, remoteClient.AgentId.ToString(), string.Empty, folderID,
+                        name, description, 0, callbackID, asset, invType, nextOwnerMask, creationDate);
                }
                else
                {
diff --git a/OpenSim/Region/CoreModules/Framework/Statistics/Logging/BinaryLoggingModule.cs b/OpenSim/Region/CoreModules/Framework/Statistics/Logging/BinaryLoggingModule.cs
index a75ff62..fb74cc6 100644
--- a/OpenSim/Region/CoreModules/Framework/Statistics/Logging/BinaryLoggingModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/Statistics/Logging/BinaryLoggingModule.cs
@@ -39,7 +39,7 @@ using OpenSim.Region.Framework;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
-namespace OpenSim.Region.CoreModules.Avatar.Attachments
+namespace OpenSim.Region.CoreModules.Framework.Statistics.Logging
 {
    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "BinaryLoggingModule")]
    public class BinaryLoggingModule : INonSharedRegionModule
diff --git a/OpenSim/Region/CoreModules/Framework/Statistics/Logging/LogWriter.cs b/OpenSim/Region/CoreModules/Framework/Statistics/Logging/LogWriter.cs
new file mode 100755
index 0000000..65e4c90
--- /dev/null
+++ b/OpenSim/Region/CoreModules/Framework/Statistics/Logging/LogWriter.cs
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+using System;
+using System.IO;
+using System.Text;
+using log4net;
+namespace OpenSim.Region.CoreModules.Framework.Statistics.Logging
+{
+    /// <summary>
+    /// Class for writing a high performance, high volume log file.
+    /// Sometimes, to debug, one has a high volume logging to do and the regular
+    /// log file output is not appropriate.
+    /// Create a new instance with the parameters needed and
+    /// call Write() to output a line. Call Close() when finished.
+    /// If created with no parameters, it will not log anything.
+    /// </summary>
+    public class LogWriter : IDisposable
+    {
+        public bool Enabled { get; private set; }
+        private string m_logDirectory = ".";
+        private int m_logMaxFileTimeMin = 5;    // 5 minutes
+        public String LogFileHeader { get; set; }
+        private StreamWriter m_logFile = null;
+        private TimeSpan m_logFileLife;
+        private DateTime m_logFileEndTime;
+        private Object m_logFileWriteLock = new Object();
+        // set externally when debugging. If let 'null', this does not write any error messages.
+        public ILog ErrorLogger = null;
+        private string LogHeader = "[LOG WRITER]";
+        /// <summary>
+        /// Create a log writer that will not write anything. Good for when not enabled
+        /// but the write statements are still in the code.
+        /// </summary>
+        public LogWriter()
+        {
+            Enabled = false;
+            m_logFile = null;
+        }
+        /// <summary>
+        /// Create a log writer instance.
+        /// </summary>
+        /// <param name="dir">The directory to create the log file in. May be 'null' for default.</param>
+        /// <param name="headr">The characters that begin the log file name. May be 'null' for default.</param>
+        /// <param name="maxFileTime">Maximum age of a log file in minutes. If zero, will set default.</param>
+        public LogWriter(string dir, string headr, int maxFileTime)
+        {
+            m_logDirectory = dir == null ? "." : dir;
+            LogFileHeader = headr == null ? "log-" : headr;
+            m_logMaxFileTimeMin = maxFileTime;
+            if (m_logMaxFileTimeMin < 1)
+                m_logMaxFileTimeMin = 5;
+            m_logFileLife = new TimeSpan(0, m_logMaxFileTimeMin, 0);
+            m_logFileEndTime = DateTime.Now + m_logFileLife;
+            Enabled = true;
+        }
+        public void Dispose()
+        {
+            this.Close();
+        }
+        public void Close()
+        {
+            Enabled = false;
+            if (m_logFile != null)
+            {
+                m_logFile.Close();
+                m_logFile.Dispose();
+                m_logFile = null;
+            }
+        }
+        public void Write(string line, params object[] args)
+        {
+            if (!Enabled) return;
+            Write(String.Format(line, args));
+        }
+        public void Write(string line)
+        {
+            if (!Enabled) return;
+            try
+            {
+                lock (m_logFileWriteLock)
+                {
+                    DateTime now = DateTime.Now;
+                    if (m_logFile == null || now > m_logFileEndTime)
+                    {
+                        if (m_logFile != null)
+                        {
+                            m_logFile.Close();
+                            m_logFile.Dispose();
+                            m_logFile = null;
+                        }
+                        // First log file or time has expired, start writing to a new log file
+                        m_logFileEndTime = now + m_logFileLife;
+                        string path = (m_logDirectory.Length > 0 ? m_logDirectory
+                                    + System.IO.Path.DirectorySeparatorChar.ToString() : "")
+                                + String.Format("{0}{1}.log", LogFileHeader, now.ToString("yyyyMMddHHmmss"));
+                        m_logFile = new StreamWriter(File.Open(path, FileMode.Append, FileAccess.Write));
+                    }
+                    if (m_logFile != null)
+                    {
+                        StringBuilder buff = new StringBuilder(line.Length + 25);
+                        buff.Append(now.ToString("yyyyMMddHHmmssfff"));
+                        // buff.Append(now.ToString("yyyyMMddHHmmss"));
+                        buff.Append(",");
+                        buff.Append(line);
+                        buff.Append("\r\n");
+                        m_logFile.Write(buff.ToString());
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                if (ErrorLogger != null)
+                {
+                    ErrorLogger.ErrorFormat("{0}: FAILURE WRITING TO LOGFILE: {1}", LogHeader, e);
+                }
+                Enabled = false;
+            }
+            return;
+        }
+    }
+}
+\ No newline at end of file
diff --git a/OpenSim/Region/CoreModules/InterGrid/OpenGridProtocolModule.cs b/OpenSim/Region/CoreModules/InterGrid/OpenGridProtocolModule.cs
index a6e2548..4a76b00 100644
--- a/OpenSim/Region/CoreModules/InterGrid/OpenGridProtocolModule.cs
+++ b/OpenSim/Region/CoreModules/InterGrid/OpenGridProtocolModule.cs
@@ -40,6 +40,7 @@ using OpenMetaverse;
 using OpenMetaverse.StructuredData;
 using OpenSim.Framework;
 using OpenSim.Framework.Capabilities;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Framework.Servers;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Inventory/RemoteXInventoryServiceConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Inventory/RemoteXInventoryServiceConnector.cs
index 990dffb..11e0150 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Inventory/RemoteXInventoryServiceConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Inventory/RemoteXInventoryServiceConnector.cs
@@ -31,7 +31,7 @@ using System.Collections.Generic;
 using System.Reflection;
 using Nini.Config;
 using OpenSim.Framework;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Services.Connectors;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs
index 6cd077a..e4c6c1a 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/MapImage/MapImageServiceModule.cs
@@ -134,11 +134,6 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.MapImage
        ///<summary>
        ///
        ///</summary>
-        ///<summary>
-        ///
-        ///</summary>
        public void AddRegion(Scene scene)
        {
            if (! m_enabled)
@@ -149,10 +144,9 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.MapImage
            lock (m_scenes)
                m_scenes[scene.RegionInfo.RegionID] = scene;
-            scene.EventManager.OnLoginsEnabled += OnLoginsEnabled; 
+            scene.EventManager.OnRegionReadyStatusChange += s => { if (s.Ready) UploadMapTile(s); };
        }
        ///<summary>
        ///
        ///</summary>
@@ -166,21 +160,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.MapImage
        }
        #endregion ISharedRegionModule
+        
-        void OnLoginsEnabled(string regionName)
-        {
-            Scene scene = null;
-            foreach (Scene s in m_scenes.Values)
-                if (s.RegionInfo.RegionName == regionName)
-                {
-                    scene = s;
-                    break;
-                }
-            if (scene != null)
-                UploadMapTile(scene);
-        }
        ///<summary>
        ///
        ///</summary>
diff --git a/OpenSim/Region/CoreModules/World/Access/AccessModule.cs b/OpenSim/Region/CoreModules/World/Access/AccessModule.cs
index 553a32d..e7b1454 100644
--- a/OpenSim/Region/CoreModules/World/Access/AccessModule.cs
+++ b/OpenSim/Region/CoreModules/World/Access/AccessModule.cs
@@ -129,18 +129,18 @@ namespace OpenSim.Region.CoreModules.World
            switch (cmd[1])
            {
            case "enable":
-                scene.LoginsDisabled = false;
+                scene.LoginsEnabled = true;
                MainConsole.Instance.Output(String.Format("Logins are enabled for region {0}", scene.RegionInfo.RegionName));
                break;
            case "disable":
-                scene.LoginsDisabled = true;
+                scene.LoginsEnabled = false;
                MainConsole.Instance.Output(String.Format("Logins are disabled for region {0}", scene.RegionInfo.RegionName));
                break;
            case "status":
-                if (scene.LoginsDisabled)
+                if (scene.LoginsEnabled)
-                    MainConsole.Instance.Output(String.Format("Login in {0} are disabled", scene.RegionInfo.RegionName));
-                else
                    MainConsole.Instance.Output(String.Format("Login in {0} are enabled", scene.RegionInfo.RegionName));
+                else
+                    MainConsole.Instance.Output(String.Format("Login in {0} are disabled", scene.RegionInfo.RegionName));
                break;
            default:
                MainConsole.Instance.Output("Syntax: login enable|disable|status");
diff --git a/OpenSim/Region/CoreModules/World/Objects/Commands/ObjectCommandsModule.cs b/OpenSim/Region/CoreModules/World/Objects/Commands/ObjectCommandsModule.cs
index e5cd3e2..09f6758 100644
--- a/OpenSim/Region/CoreModules/World/Objects/Commands/ObjectCommandsModule.cs
+++ b/OpenSim/Region/CoreModules/World/Objects/Commands/ObjectCommandsModule.cs
@@ -37,7 +37,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/CoreModules/World/Region/RegionCommandsModule.cs b/OpenSim/Region/CoreModules/World/Region/RegionCommandsModule.cs
index 2838e0c..7d35473 100644
--- a/OpenSim/Region/CoreModules/World/Region/RegionCommandsModule.cs
+++ b/OpenSim/Region/CoreModules/World/Region/RegionCommandsModule.cs
@@ -37,7 +37,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/CoreModules/World/Sound/SoundModule.cs b/OpenSim/Region/CoreModules/World/Sound/SoundModule.cs
index d768a1a..14c1a39 100644
--- a/OpenSim/Region/CoreModules/World/Sound/SoundModule.cs
+++ b/OpenSim/Region/CoreModules/World/Sound/SoundModule.cs
@@ -119,17 +119,20 @@ namespace OpenSim.Region.CoreModules.World.Sound
            m_scene.ForEachRootScenePresence(delegate(ScenePresence sp)
            {
                double dis = Util.GetDistanceTo(sp.AbsolutePosition, position);
                if (dis > 100.0) // Max audio distance
                    return;
+                float thisSpGain;
                // Scale by distance
                if (radius == 0)
-                    gain = (float)((double)gain * ((100.0 - dis) / 100.0));
+                    thisSpGain = (float)((double)gain * ((100.0 - dis) / 100.0));
                else
-                    gain = (float)((double)gain * ((radius - dis) / radius));
+                    thisSpGain = (float)((double)gain * ((radius - dis) / radius));
                sp.ControllingClient.SendTriggeredSound(
-                    soundId, ownerID, objectID, parentID, handle, position, (float)gain);
+                    soundId, ownerID, objectID, parentID, handle, position, thisSpGain);
            });
        }
    }
diff --git a/OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs b/OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs
index 309856f..26b406e 100644
--- a/OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs
+++ b/OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs
@@ -42,6 +42,7 @@ using OpenMetaverse.Imaging;
 using OpenMetaverse.StructuredData;
 using OpenSim.Framework;
 using OpenSim.Framework.Capabilities;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Framework.Servers;
 using OpenSim.Framework.Servers.HttpServer;
 using OpenSim.Region.Framework.Interfaces;
diff --git a/OpenSim/Region/Framework/Interfaces/IRegionReadyModule.cs b/OpenSim/Region/Framework/Interfaces/IRegionReadyModule.cs
index aa4a757..136ca92 100644
--- a/OpenSim/Region/Framework/Interfaces/IRegionReadyModule.cs
+++ b/OpenSim/Region/Framework/Interfaces/IRegionReadyModule.cs
@@ -25,14 +25,23 @@
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 using System;
+using OpenSim.Framework;
 namespace OpenSim.Region.Framework.Interfaces
 {
    public interface IRegionReadyModule
    {
        void OarLoadingAlert(string msg);
+        /// <summary>
+        /// Trigger region ready status manually.
+        /// </summary>
+        /// <remarks>
+        /// This should be called by the scene if the IRegionReadyModule has set Scene.LoginLock == true
+        /// </remarks>
+        /// <param name='scene'></param>
+        void TriggerRegionReady(IScene scene);
    }
 }
diff --git a/OpenSim/Region/Framework/Interfaces/IScenePresence.cs b/OpenSim/Region/Framework/Interfaces/IScenePresence.cs
index 3f68ee0..0fe681f 100644
--- a/OpenSim/Region/Framework/Interfaces/IScenePresence.cs
+++ b/OpenSim/Region/Framework/Interfaces/IScenePresence.cs
@@ -40,8 +40,6 @@ namespace OpenSim.Region.Framework.Interfaces
    /// </remarks>
    public interface IScenePresence : ISceneAgent
    {
-        PresenceType PresenceType { get; }
        /// <summary>
        /// Copy of the script states while the agent is in transit. This state may
        /// need to be placed back in case of transfer fail.
diff --git a/OpenSim/Region/Framework/Interfaces/IScriptModuleComms.cs b/OpenSim/Region/Framework/Interfaces/IScriptModuleComms.cs
index bfe1e8d..ed71a95 100644
--- a/OpenSim/Region/Framework/Interfaces/IScriptModuleComms.cs
+++ b/OpenSim/Region/Framework/Interfaces/IScriptModuleComms.cs
@@ -67,6 +67,10 @@ namespace OpenSim.Region.Framework.Interfaces
        /// <param name="key"></param>
        void DispatchReply(UUID scriptId, int code, string text, string key);
+        /// For constants
+        void RegisterConstant(string cname, object value);
+        object LookupModConstant(string cname);
        // For use ONLY by the script API
        void RaiseEvent(UUID script, string id, string module, string command, string key);
    }
diff --git a/OpenSim/Region/Framework/Scenes/Animation/ScenePresenceAnimator.cs b/OpenSim/Region/Framework/Scenes/Animation/ScenePresenceAnimator.cs
index 9ddac19..50a176b 100644
--- a/OpenSim/Region/Framework/Scenes/Animation/ScenePresenceAnimator.cs
+++ b/OpenSim/Region/Framework/Scenes/Animation/ScenePresenceAnimator.cs
@@ -551,11 +551,5 @@ namespace OpenSim.Region.Framework.Scenes.Animation
            SendAnimPack(animIDs, sequenceNums, objectIDs);
        }
-        public void Close()
-        {
-            m_animations = null;
-            m_scenePresence = null;
-        }
    }
-}
+}
+\ No newline at end of file
diff --git a/OpenSim/Region/Framework/Scenes/EventManager.cs b/OpenSim/Region/Framework/Scenes/EventManager.cs
index d783e57..7cb3811 100644
--- a/OpenSim/Region/Framework/Scenes/EventManager.cs
+++ b/OpenSim/Region/Framework/Scenes/EventManager.cs
@@ -500,15 +500,24 @@ namespace OpenSim.Region.Framework.Scenes
        public delegate void RegionHeartbeatEnd(Scene scene);
        public event RegionHeartbeatEnd OnRegionHeartbeatEnd;
-        public delegate void LoginsEnabled(string regionName);
+        /// <summary>
+        /// Fired when logins to a region are enabled or disabled.
+        /// </summary>
+        /// <remarks>
+        /// 
+        /// </remarks>
+        /// Fired
+        public event RegionLoginsStatusChange OnRegionLoginsStatusChange;
+        public delegate void RegionLoginsStatusChange(IScene scene);
        /// <summary>
-        /// This should only fire in all circumstances if the RegionReady module is active.
+        /// Fired when a region is considered ready for use.
        /// </summary>
        /// <remarks>
-        /// TODO: Fire this even when the RegionReady module is not active.
+        /// A region is considered ready when startup operations such as loading of scripts already on the region
+        /// have been completed.
        /// </remarks>
-        public event LoginsEnabled OnLoginsEnabled;
+        public event Action<IScene> OnRegionReadyStatusChange;
        public delegate void PrimsLoaded(Scene s);
        public event PrimsLoaded OnPrimsLoaded;
@@ -2502,21 +2511,42 @@ namespace OpenSim.Region.Framework.Scenes
            }
        }
-        public void TriggerLoginsEnabled (string regionName)
+        public void TriggerRegionLoginsStatusChange(IScene scene)
        {
-            LoginsEnabled handler = OnLoginsEnabled;
+            RegionLoginsStatusChange handler = OnRegionLoginsStatusChange;
-            if ( handler != null)
+            if (handler != null)
            {
-                foreach (LoginsEnabled d in handler.GetInvocationList())
+                foreach (RegionLoginsStatusChange d in handler.GetInvocationList())
                {
                    try
                    {
-                        d(regionName);
+                        d(scene);
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat("[EVENT MANAGER]: Delegate for OnRegionLoginsStatusChange failed - continuing {0} - {1}",
+                            e.Message, e.StackTrace);
+                    }
+                }
+            }
+        }
+        public void TriggerRegionReadyStatusChange(IScene scene)
+        {
+            Action<IScene> handler = OnRegionReadyStatusChange;
+            if (handler != null)
+            {
+                foreach (Action<IScene> d in handler.GetInvocationList())
+                {
+                    try
+                    {
+                        d(scene);
                    }
                    catch (Exception e)
                    {
-                        m_log.ErrorFormat("[EVENT MANAGER]: Delegate for LoginsEnabled failed - continuing {0} - {1}",
+                        m_log.ErrorFormat("[EVENT MANAGER]: Delegate for OnRegionReadyStatusChange failed - continuing {0} - {1}",
                            e.Message, e.StackTrace);
                    }
                }
diff --git a/OpenSim/Region/Framework/Scenes/RegionStatsHandler.cs b/OpenSim/Region/Framework/Scenes/RegionStatsHandler.cs
index 1365831..c11174d 100644
--- a/OpenSim/Region/Framework/Scenes/RegionStatsHandler.cs
+++ b/OpenSim/Region/Framework/Scenes/RegionStatsHandler.cs
@@ -39,7 +39,7 @@ using OpenSim.Framework.Communications;
 using OpenSim.Framework.Console;
 using OpenSim.Framework.Servers;
 using OpenSim.Framework.Servers.HttpServer;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
index 98b8fcc..672d95a 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
@@ -811,16 +811,20 @@ namespace OpenSim.Region.Framework.Scenes
                        && oldAgentID == LibraryService.LibraryRootFolder.Owner))
                {
                    CreateNewInventoryItem(
-                        remoteClient, item.CreatorId, item.CreatorData, newFolderID, newName, item.Flags, callbackID, asset, (sbyte)item.InvType,
+                        remoteClient, item.CreatorId, item.CreatorData, newFolderID,
-                        item.BasePermissions, item.CurrentPermissions, item.EveryOnePermissions, item.NextPermissions, item.GroupPermissions, Util.UnixTimeSinceEpoch());
+                        newName, item.Description, item.Flags, callbackID, asset, (sbyte)item.InvType,
+                        item.BasePermissions, item.CurrentPermissions, item.EveryOnePermissions,
+                        item.NextPermissions, item.GroupPermissions, Util.UnixTimeSinceEpoch());
                }
                else
                {  
                    // If item is transfer or permissions are off or calling agent is allowed to copy item owner's inventory item.
-                    if (((item.CurrentPermissions & (uint)PermissionMask.Transfer) != 0) && (m_permissions.BypassPermissions() || m_permissions.CanCopyUserInventory(remoteClient.AgentId, oldItemID)))
+                    if (((item.CurrentPermissions & (uint)PermissionMask.Transfer) != 0)
+                        && (m_permissions.BypassPermissions()
+                            || m_permissions.CanCopyUserInventory(remoteClient.AgentId, oldItemID)))
                    {
                        CreateNewInventoryItem(
-                            remoteClient, item.CreatorId, item.CreatorData, newFolderID, newName, item.Flags, callbackID,
+                            remoteClient, item.CreatorId, item.CreatorData, newFolderID, newName, item.Description, item.Flags, callbackID,
                            asset, (sbyte) item.InvType,
                            item.NextPermissions, item.NextPermissions, item.EveryOnePermissions & item.NextPermissions,
                            item.NextPermissions, item.GroupPermissions, Util.UnixTimeSinceEpoch());
@@ -885,32 +889,50 @@ namespace OpenSim.Region.Framework.Scenes
        /// <summary>
        /// Create a new inventory item.
        /// </summary>
-        /// <param name="remoteClient"></param>
+        /// <param name="remoteClient">Client creating this inventory item.</param>
-        /// <param name="folderID"></param>
+        /// <param name="creatorID"></param>
-        /// <param name="callbackID"></param>
+        /// <param name="creatorData"></param>
-        /// <param name="asset"></param>
+        /// <param name="folderID">UUID of folder in which this item should be placed.</param>
-        /// <param name="invType"></param>
+        /// <param name="name">Item name.</para>
-        /// <param name="nextOwnerMask"></param>
+        /// <param name="description">Item description.</param>
-        public void CreateNewInventoryItem(IClientAPI remoteClient, string creatorID, string creatorData, UUID folderID, string name, uint flags, uint callbackID,
+        /// <param name="flags">Item flags</param>
-                                            AssetBase asset, sbyte invType, uint nextOwnerMask, int creationDate)
+        /// <param name="callbackID">Generated by the client.</para>
+        /// <param name="asset">Asset to which this item refers.</param>
+        /// <param name="invType">Type of inventory item.</param>
+        /// <param name="nextOwnerMask">Next owner pemrissions mask.</param>
+        /// <param name="creationDate">Unix timestamp at which this item was created.</param>
+        public void CreateNewInventoryItem(
+            IClientAPI remoteClient, string creatorID, string creatorData, UUID folderID,
+            string name, string description, uint flags, uint callbackID,
+            AssetBase asset, sbyte invType, uint nextOwnerMask, int creationDate)
        {
            CreateNewInventoryItem(
-                remoteClient, creatorID, creatorData, folderID, name, flags, callbackID, asset, invType,
+                remoteClient, creatorID, creatorData, folderID, name, description, flags, callbackID, asset, invType,
                (uint)PermissionMask.All, (uint)PermissionMask.All, 0, nextOwnerMask, 0, creationDate);
        }
        /// <summary>
        /// Create a new Inventory Item
        /// </summary>
-        /// <param name="remoteClient"></param>
+        /// <param name="remoteClient">Client creating this inventory item.</param>
-        /// <param name="folderID"></param>
+        /// <param name="creatorID"></param>
-        /// <param name="callbackID"></param>
+        /// <param name="creatorData"></param>
-        /// <param name="asset"></param>
+        /// <param name="folderID">UUID of folder in which this item should be placed.</param>
-        /// <param name="invType"></param>
+        /// <param name="name">Item name.</para>
-        /// <param name="nextOwnerMask"></param>
+        /// <param name="description">Item description.</param>
-        /// <param name="creationDate"></param>
+        /// <param name="flags">Item flags</param>
+        /// <param name="callbackID">Generated by the client.</para>
+        /// <param name="asset">Asset to which this item refers.</param>
+        /// <param name="invType">Type of inventory item.</param>
+        /// <param name="baseMask">Base permissions mask.</param>
+        /// <param name="currentMask">Current permissions mask.</param>
+        /// <param name="everyoneMask">Everyone permissions mask.</param>
+        /// <param name="nextOwnerMask">Next owner pemrissions mask.</param>
+        /// <param name="groupMask">Group permissions mask.</param>
+        /// <param name="creationDate">Unix timestamp at which this item was created.</param>
        private void CreateNewInventoryItem(
-            IClientAPI remoteClient, string creatorID, string creatorData, UUID folderID, string name, uint flags, uint callbackID, AssetBase asset, sbyte invType,
+            IClientAPI remoteClient, string creatorID, string creatorData, UUID folderID,
+            string name, string description, uint flags, uint callbackID, AssetBase asset, sbyte invType,
            uint baseMask, uint currentMask, uint everyoneMask, uint nextOwnerMask, uint groupMask, int creationDate)
        {
            InventoryItemBase item = new InventoryItemBase();
@@ -919,8 +941,8 @@ namespace OpenSim.Region.Framework.Scenes
            item.CreatorData = creatorData;
            item.ID = UUID.Random();
            item.AssetID = asset.FullID;
-            item.Description = asset.Description;
            item.Name = name;
+            item.Description = description;
            item.Flags = flags;
            item.AssetType = asset.Type;
            item.InvType = invType;
@@ -1002,7 +1024,8 @@ namespace OpenSim.Region.Framework.Scenes
                asset.Description = description;
                CreateNewInventoryItem(
-                    remoteClient, remoteClient.AgentId.ToString(), string.Empty, folderID, name, 0, callbackID, asset, invType,
+                    remoteClient, remoteClient.AgentId.ToString(), string.Empty, folderID,
+                    name, description, 0, callbackID, asset, invType,
                    (uint)PermissionMask.All, (uint)PermissionMask.All, (uint)PermissionMask.All,
                    (uint)PermissionMask.All, (uint)PermissionMask.All, Util.UnixTimeSinceEpoch());
            }
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index ad9e91d..3a28d42 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -40,6 +40,7 @@ using OpenMetaverse;
 using OpenMetaverse.Packets;
 using OpenMetaverse.Imaging;
 using OpenSim.Framework;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Services.Interfaces;
 using OpenSim.Framework.Communications;
 using OpenSim.Framework.Console;
@@ -129,9 +130,10 @@ namespace OpenSim.Region.Framework.Scenes
        public bool m_strictAccessControl = true;
        public bool m_seeIntoBannedRegion = false;
        public int MaxUndoCount = 5;
        // Using this for RegionReady module to prevent LoginsDisabled from changing under our feet;
        public bool LoginLock = false;
-        public bool LoginsDisabled = true;
        public bool StartDisabled = false;
        public bool LoadingPrims;
        public IXfer XferManager;
@@ -727,6 +729,8 @@ namespace OpenSim.Region.Framework.Scenes
                {
                    IConfig startupConfig = m_config.Configs["Startup"];
+                    StartDisabled = startupConfig.GetBoolean("StartDisabled", false);
                    m_defaultDrawDistance = startupConfig.GetFloat("DefaultDrawDistance",m_defaultDrawDistance);
                    m_useBackup = startupConfig.GetBoolean("UseSceneBackup", m_useBackup);
                    if (!m_useBackup)
@@ -1229,15 +1233,17 @@ namespace OpenSim.Region.Framework.Scenes
                                     avatar.ControllingClient.SendShutdownConnectionNotice();
                                 });
+            // Stop updating the scene objects and agents.
+            m_shuttingDown = true;
            // Wait here, or the kick messages won't actually get to the agents before the scene terminates.
+            // We also need to wait to avoid a race condition with the scene update loop which might not yet
+            // have checked ShuttingDown.
            Thread.Sleep(500);
            // Stop all client threads.
            ForEachScenePresence(delegate(ScenePresence avatar) { avatar.ControllingClient.Close(); });
-            // Stop updating the scene objects and agents.
-            m_shuttingDown = true;
            m_log.Debug("[SCENE]: Persisting changed objects");
            EventManager.TriggerSceneShuttingDown(this);
@@ -1252,6 +1258,15 @@ namespace OpenSim.Region.Framework.Scenes
            m_sceneGraph.Close();
+            if (PhysicsScene != null)
+            {
+                PhysicsScene phys = PhysicsScene;
+                // remove the physics engine from both Scene and SceneGraph
+                PhysicsScene = null;
+                phys.Dispose();
+                phys = null;
+            }
            if (!GridService.DeregisterRegion(RegionInfo.RegionID))
                m_log.WarnFormat("[SCENE]: Deregister from grid failed for region {0}", Name);
@@ -1530,7 +1545,7 @@ namespace OpenSim.Region.Framework.Scenes
                    //    landMS = Util.EnvironmentTickCountSubtract(ldMS);
                    //}
    
-                    if (LoginsDisabled && Frame == 20)
+                    if (!LoginsEnabled && Frame == 20)
                    {
    //                    m_log.DebugFormat("{0} {1} {2}", LoginsDisabled, m_sceneGraph.GetActiveScriptsCount(), LoginLock);
    
@@ -1538,31 +1553,34 @@ namespace OpenSim.Region.Framework.Scenes
                        // this is a rare case where we know we have just went through a long cycle of heap
                        // allocations, and there is no more work to be done until someone logs in
                        GC.Collect();
-    
-                        IConfig startupConfig = m_config.Configs["Startup"];
+                        if (!LoginLock)
-                        if (startupConfig == null || !startupConfig.GetBoolean("StartDisabled", false))
                        {
-                            // This handles a case of a region having no scripts for the RegionReady module
+                            if (!StartDisabled)
-                            if (m_sceneGraph.GetActiveScriptsCount() == 0)
-                            {
-                                // need to be able to tell these have changed in RegionReady
-                                LoginLock = false;
-                                EventManager.TriggerLoginsEnabled(RegionInfo.RegionName);
-                            }
-    
-                            // For RegionReady lockouts
-                            if (!LoginLock)
                            {
                                m_log.InfoFormat("[REGION]: Enabling logins for {0}", RegionInfo.RegionName);
-                                LoginsDisabled = false;
+                                LoginsEnabled = true;
                            }
-    
-                            m_sceneGridService.InformNeighborsThatRegionisUp(RequestModuleInterface<INeighbourService>(), RegionInfo);
+                            m_sceneGridService.InformNeighborsThatRegionisUp(
+                                RequestModuleInterface<INeighbourService>(), RegionInfo);
+                            // Region ready should always be set
+                            Ready = true;
                        }
                        else
                        {
-                            StartDisabled = true;
+                            // This handles a case of a region having no scripts for the RegionReady module
-                            LoginsDisabled = true;
+                            if (m_sceneGraph.GetActiveScriptsCount() == 0)
+                            {
+                                // In this case, we leave it to the IRegionReadyModule to enable logins
+                               
+                                // LoginLock can currently only be set by a region module implementation.
+                                // If somehow this hasn't been done then the quickest way to bugfix is to see the
+                                // NullReferenceException
+                                IRegionReadyModule rrm = RequestModuleInterface<IRegionReadyModule>();
+                                rrm.TriggerRegionReady(this);
+                            }
                        }
                    }
                }
@@ -3477,25 +3495,31 @@ namespace OpenSim.Region.Framework.Scenes
                if (AgentTransactionsModule != null)
                    AgentTransactionsModule.RemoveAgentAssetTransactions(agentID);
-                avatar.Close();
                m_authenticateHandler.RemoveCircuit(avatar.ControllingClient.CircuitCode);
                m_log.Debug("[Scene] The avatar has left the building");
            }
            catch (Exception e)
            {
                m_log.Error(
-                    string.Format("[SCENE]: Exception removing {0} from {1}, ", avatar.Name, RegionInfo.RegionName), e);
+                    string.Format("[SCENE]: Exception removing {0} from {1}.  Cleaning up.  Exception ", avatar.Name, Name), e);
            }
            finally
            {
-                // Always clean these structures up so that any failure above doesn't cause them to remain in the
+                try
-                // scene with possibly bad effects (e.g. continually timing out on unacked packets and triggering
+                {
-                // the same cleanup exception continually.
+                    // Always clean these structures up so that any failure above doesn't cause them to remain in the
-                // TODO: This should probably extend to the whole method, but we don't want to also catch the NRE
+                    // scene with possibly bad effects (e.g. continually timing out on unacked packets and triggering
-                // since this would hide the underlying failure and other associated problems.
+                    // the same cleanup exception continually.
-                m_sceneGraph.RemoveScenePresence(agentID);
+                    m_sceneGraph.RemoveScenePresence(agentID);
-                m_clientManager.Remove(agentID);
+                    m_clientManager.Remove(agentID);
+    
+                    avatar.Close();
+                }
+                catch (Exception e)
+                {
+                    m_log.Error(
+                        string.Format("[SCENE]: Exception in final clean up of {0} in {1}.  Exception ", avatar.Name, Name), e);
+                }
            }
            //m_log.InfoFormat("[SCENE] Memory pre  GC {0}", System.GC.GetTotalMemory(false));
@@ -3609,7 +3633,7 @@ namespace OpenSim.Region.Framework.Scenes
                agent.startpos
            );
-            if (LoginsDisabled)
+            if (!LoginsEnabled)
            {
                reason = "Logins Disabled";
                return false;
@@ -3666,8 +3690,8 @@ namespace OpenSim.Region.Framework.Scenes
                // We have a zombie from a crashed session. 
                // Or the same user is trying to be root twice here, won't work.
                // Kill it.
-                m_log.DebugFormat(
+                m_log.WarnFormat(
-                    "[SCENE]: Zombie scene presence detected for {0} {1} in {2}",
+                    "[SCENE]: Existing root scene presence detected for {0} {1} in {2} when connecting.  Removing existing presence.",
                    sp.Name, sp.UUID, RegionInfo.RegionName);
                sp.ControllingClient.Close();
@@ -4658,6 +4682,23 @@ namespace OpenSim.Region.Framework.Scenes
        }
        /// <summary>
+        /// Gets all the scene presences in this scene.
+        /// </summary>
+        /// <remarks>
+        /// This method will return both root and child scene presences.
+        ///
+        /// Consider using ForEachScenePresence() or ForEachRootScenePresence() if possible since these will not
+        /// involving creating a new List object.
+        /// </remarks>
+        /// <returns>
+        /// A list of the scene presences.  Adding or removing from the list will not affect the presences in the scene.
+        /// </returns>
+        public List<ScenePresence> GetScenePresences()
+        {
+            return new List<ScenePresence>(m_sceneGraph.GetScenePresences());
+        }
+        /// <summary>
        /// Performs action on all avatars in the scene (root scene presences)
        /// Avatars may be an NPC or a 'real' client.
        /// </summary>
@@ -5775,5 +5816,21 @@ Environment.Exit(1);
        {
            GC.Collect();
        }
+        // Wrappers to get physics modules retrieve assets. Has to be done this way
+        // because we can't assign the asset service to physics directly - at the
+        // time physics are instantiated it's not registered but it will be by
+        // the time the first prim exists.
+        public void PhysicsRequestAsset(UUID assetID, AssetReceivedDelegate callback)
+        {
+            AssetService.Get(assetID.ToString(), callback, PhysicsAssetReceived);
+        }
+        private void PhysicsAssetReceived(string id, Object sender, AssetBase asset)
+        {
+            AssetReceivedDelegate callback = (AssetReceivedDelegate)sender;
+            callback(asset);
+        }
    }
 }
diff --git a/OpenSim/Region/Framework/Scenes/SceneBase.cs b/OpenSim/Region/Framework/Scenes/SceneBase.cs
index 8db4397..7c8bd88 100644
--- a/OpenSim/Region/Framework/Scenes/SceneBase.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneBase.cs
@@ -106,6 +106,42 @@ namespace OpenSim.Region.Framework.Scenes
        
        protected readonly ClientManager m_clientManager = new ClientManager();
+        public bool LoginsEnabled
+        {
+            get
+            {
+                return m_loginsEnabled;
+            }
+            set
+            {
+                if (m_loginsEnabled != value)
+                {
+                    m_loginsEnabled = value;
+                    EventManager.TriggerRegionLoginsStatusChange(this);
+                }
+            }
+        }
+        private bool m_loginsEnabled;
+        public bool Ready
+        {
+            get
+            {
+                return m_ready;
+            }
+            set
+            {
+                if (m_ready != value)
+                {
+                    m_ready = value;
+                    EventManager.TriggerRegionReadyStatusChange(this);
+                }
+            }
+        }
+        private bool m_ready;
        public float TimeDilation
        {
            get { return 1.0f; }
diff --git a/OpenSim/Region/Framework/Scenes/SceneGraph.cs b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
index c3d66eb..e0260e2 100644
--- a/OpenSim/Region/Framework/Scenes/SceneGraph.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
@@ -848,7 +848,7 @@ namespace OpenSim.Region.Framework.Scenes
        /// pass a delegate to ForEachScenePresence.
        /// </summary>
        /// <returns></returns>
-        private List<ScenePresence> GetScenePresences()
+        protected internal List<ScenePresence> GetScenePresences()
        {
            return m_scenePresenceArray;
        }
diff --git a/OpenSim/Region/Framework/Scenes/SceneManager.cs b/OpenSim/Region/Framework/Scenes/SceneManager.cs
index e3fed49..f1b09ca 100644
--- a/OpenSim/Region/Framework/Scenes/SceneManager.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneManager.cs
@@ -47,6 +47,48 @@ namespace OpenSim.Region.Framework.Scenes
        public event RestartSim OnRestartSim;
+        /// <summary>
+        /// Fired when either all regions are ready for use or at least one region has become unready for use where
+        /// previously all regions were ready.
+        /// </summary>
+        public event Action<SceneManager> OnRegionsReadyStatusChange;
+        /// <summary>
+        /// Are all regions ready for use?
+        /// </summary>
+        public bool AllRegionsReady
+        {
+            get
+            {
+                return m_allRegionsReady;
+            }
+            private set
+            {
+                if (m_allRegionsReady != value)
+                {
+                    m_allRegionsReady = value;
+                    Action<SceneManager> handler = OnRegionsReadyStatusChange;
+                    if (handler != null)
+                    {
+                        foreach (Action<SceneManager> d in handler.GetInvocationList())
+                        {
+                            try
+                            {
+                                d(this);
+                            }
+                            catch (Exception e)
+                            {
+                                m_log.ErrorFormat("[SCENE MANAGER]: Delegate for OnRegionsReadyStatusChange failed - continuing {0} - {1}",
+                                    e.Message, e.StackTrace);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        private bool m_allRegionsReady;
        private static SceneManager m_instance = null;
        public static SceneManager Instance
        { 
@@ -128,9 +170,11 @@ namespace OpenSim.Region.Framework.Scenes
        public void Add(Scene scene)
        {
-            scene.OnRestart += HandleRestart;
+            lock (m_localScenes)
+                m_localScenes.Add(scene.RegionInfo.RegionID, scene.RegionInfo.RegionName, scene);
-            m_localScenes.Add(scene.RegionInfo.RegionID, scene.RegionInfo.RegionName, scene);
+            scene.OnRestart += HandleRestart;
+            scene.EventManager.OnRegionReadyStatusChange += HandleRegionReadyStatusChange;
        }
        public void HandleRestart(RegionInfo rdata)
@@ -138,12 +182,19 @@ namespace OpenSim.Region.Framework.Scenes
            m_log.Error("[SCENEMANAGER]: Got Restart message for region:" + rdata.RegionName + " Sending up to main");
            int RegionSceneElement = -1;
-            m_localScenes.Remove(rdata.RegionID);
+            lock (m_localScenes)
+                m_localScenes.Remove(rdata.RegionID);
            // Send signal to main that we're restarting this sim.
            OnRestartSim(rdata);
        }
+        private void HandleRegionReadyStatusChange(IScene scene)
+        {
+            lock (m_localScenes)
+                AllRegionsReady = m_localScenes.FindAll(s => !s.Ready).Count == 0;
+        }
        public void SendSimOnlineNotification(ulong regionHandle)
        {
            RegionInfo Result = null;
@@ -483,7 +534,8 @@ namespace OpenSim.Region.Framework.Scenes
        public void CloseScene(Scene scene)
        {
-            m_localScenes.Remove(scene.RegionInfo.RegionID);
+            lock (m_localScenes)
+                m_localScenes.Remove(scene.RegionInfo.RegionID);
            scene.Close();
        }
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 6ab0027..08c7a58 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -1991,7 +1991,7 @@ namespace OpenSim.Region.Framework.Scenes
            try
            {
                if (!m_scene.ShuttingDown || // if shutting down then there will be nothing to handle the return so leave till next restart
-                        m_scene.LoginsDisabled || // We're starting up or doing maintenance, don't mess with things
+                        !m_scene.LoginsEnabled || // We're starting up or doing maintenance, don't mess with things
                        m_scene.LoadingPrims) // Land may not be valid yet
                
                {
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index cdabd45..4d3ab51 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -110,15 +110,10 @@ namespace OpenSim.Region.Framework.Scenes
        public UUID currentParcelUUID = UUID.Zero;
-        protected ScenePresenceAnimator m_animator;
        /// <value>
        /// The animator for this avatar
        /// </value>
-        public ScenePresenceAnimator Animator
+        public ScenePresenceAnimator Animator { get; private set; }
-        {
-            get { return m_animator; }
-            private set { m_animator = value; }
-        }
        /// <summary>
        /// Attachments recorded on this avatar.
@@ -2763,8 +2758,7 @@ namespace OpenSim.Region.Framework.Scenes
            //m_log.DebugFormat("[SCENE PRESENCE] SendAvatarDataToAgent from {0} ({1}) to {2} ({3})", Name, UUID, avatar.Name, avatar.UUID);
            avatar.ControllingClient.SendAvatarDataImmediate(this);
-            if (Animator != null)
+            Animator.SendAnimPackToClient(avatar.ControllingClient);
-                Animator.SendAnimPackToClient(avatar.ControllingClient);
        }
        /// <summary>
@@ -3440,6 +3434,16 @@ namespace OpenSim.Region.Framework.Scenes
            if (IsChildAgent)
                return;
            
+            //if ((Math.Abs(Velocity.X) > 0.1e-9f) || (Math.Abs(Velocity.Y) > 0.1e-9f))
+            // The Physics Scene will send updates every 500 ms grep: PhysicsActor.SubscribeEvents(
+            // as of this comment the interval is set in AddToPhysicalScene
+//                if (m_updateCount > 0)
+//                {
+            Animator.UpdateMovementAnimations();
+//                    m_updateCount--;
+//                }
            CollisionEventUpdate collisionData = (CollisionEventUpdate)e;
            Dictionary<uint, ContactPoint> coldata = collisionData.m_objCollisionList;
@@ -3453,7 +3457,7 @@ namespace OpenSim.Region.Framework.Scenes
 //                m_lastColCount = coldata.Count;
 //            }
-            if (coldata.Count != 0 && Animator != null)
+            if (coldata.Count != 0)
            {
                switch (Animator.CurrentMovementAnimation)
                {
@@ -3565,7 +3569,7 @@ namespace OpenSim.Region.Framework.Scenes
            ControllingClient.SendHealth(Health);
        }
-        public void Close()
+        protected internal void Close()
        {
            // Clear known regions
            KnownRegions = new Dictionary<ulong, string>();
@@ -3581,9 +3585,6 @@ namespace OpenSim.Region.Framework.Scenes
            // m_reprioritizationTimer.Dispose(); 
            RemoveFromPhysicalScene();
-            if(Animator != null)
-                Animator.Close();
-            Animator = null;
        }
        public void AddAttachment(SceneObjectGroup gobj)
diff --git a/OpenSim/Region/Framework/Scenes/SimStatsReporter.cs b/OpenSim/Region/Framework/Scenes/SimStatsReporter.cs
index d6ff5a2..20919a1 100644
--- a/OpenSim/Region/Framework/Scenes/SimStatsReporter.cs
+++ b/OpenSim/Region/Framework/Scenes/SimStatsReporter.cs
@@ -30,7 +30,7 @@ using System.Collections.Generic;
 using System.Timers;
 using OpenMetaverse.Packets;
 using OpenSim.Framework;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Interfaces;
 namespace OpenSim.Region.Framework.Scenes
diff --git a/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceAgentTests.cs b/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceAgentTests.cs
index 02c45ef..5758869 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceAgentTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceAgentTests.cs
@@ -53,62 +53,94 @@ namespace OpenSim.Region.Framework.Scenes.Tests
    /// Scene presence tests
    /// </summary>
    [TestFixture]
-    public class ScenePresenceAgentTests
+    public class ScenePresenceAgentTests : OpenSimTestCase
    {
-        public Scene scene, scene2, scene3;
+//        public Scene scene, scene2, scene3;
-        public UUID agent1, agent2, agent3;
+//        public UUID agent1, agent2, agent3;
-        public static Random random;
+//        public static Random random;
-        public ulong region1,region2,region3;
+//        public ulong region1, region2, region3;
-        public AgentCircuitData acd1;
+//        public AgentCircuitData acd1;
-        public SceneObjectGroup sog1, sog2, sog3;
+//        public TestClient testclient;
-        public TestClient testclient;
+//        [TestFixtureSetUp]
-        [TestFixtureSetUp]
+//        public void Init()
-        public void Init()
+//        {
+////            TestHelpers.InMethod();
+////
+////            SceneHelpers sh = new SceneHelpers();
+////
+////            scene = sh.SetupScene("Neighbour x", UUID.Random(), 1000, 1000);
+////            scene2 = sh.SetupScene("Neighbour x+1", UUID.Random(), 1001, 1000);
+////            scene3 = sh.SetupScene("Neighbour x-1", UUID.Random(), 999, 1000);
+////
+////            ISharedRegionModule interregionComms = new LocalSimulationConnectorModule();
+////            interregionComms.Initialise(new IniConfigSource());
+////            interregionComms.PostInitialise();
+////            SceneHelpers.SetupSceneModules(scene, new IniConfigSource(), interregionComms);
+////            SceneHelpers.SetupSceneModules(scene2, new IniConfigSource(), interregionComms);
+////            SceneHelpers.SetupSceneModules(scene3, new IniConfigSource(), interregionComms);
+//
+////            agent1 = UUID.Random();
+////            agent2 = UUID.Random();
+////            agent3 = UUID.Random();
+//
+////            region1 = scene.RegionInfo.RegionHandle;
+////            region2 = scene2.RegionInfo.RegionHandle;
+////            region3 = scene3.RegionInfo.RegionHandle;
+//        }
+        [Test]
+        public void TestCreateRootScenePresence()
        {
            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+            UUID spUuid = TestHelpers.ParseTail(0x1);
-            SceneHelpers sh = new SceneHelpers();
+            TestScene scene = new SceneHelpers().SetupScene();
+            SceneHelpers.AddScenePresence(scene, spUuid);
-            scene = sh.SetupScene("Neighbour x", UUID.Random(), 1000, 1000);
-            scene2 = sh.SetupScene("Neighbour x+1", UUID.Random(), 1001, 1000);
+            Assert.That(scene.AuthenticateHandler.GetAgentCircuitData(spUuid), Is.Not.Null);
-            scene3 = sh.SetupScene("Neighbour x-1", UUID.Random(), 999, 1000);
+            Assert.That(scene.AuthenticateHandler.GetAgentCircuits().Count, Is.EqualTo(1));
-            ISharedRegionModule interregionComms = new LocalSimulationConnectorModule();
+            ScenePresence sp = scene.GetScenePresence(spUuid);
-            interregionComms.Initialise(new IniConfigSource());
+            Assert.That(sp, Is.Not.Null);
-            interregionComms.PostInitialise();
+            Assert.That(sp.IsChildAgent, Is.False);
-            SceneHelpers.SetupSceneModules(scene, new IniConfigSource(), interregionComms);
+            Assert.That(sp.UUID, Is.EqualTo(spUuid));
-            SceneHelpers.SetupSceneModules(scene2, new IniConfigSource(), interregionComms);
-            SceneHelpers.SetupSceneModules(scene3, new IniConfigSource(), interregionComms);
+            Assert.That(scene.GetScenePresences().Count, Is.EqualTo(1));
-            agent1 = UUID.Random();
-            agent2 = UUID.Random();
-            agent3 = UUID.Random();
-            random = new Random();
-            sog1 = SceneHelpers.CreateSceneObject(1, agent1);
-            scene.AddSceneObject(sog1);
-            sog2 = SceneHelpers.CreateSceneObject(1, agent1);
-            scene.AddSceneObject(sog2);
-            sog3 = SceneHelpers.CreateSceneObject(1, agent1);
-            scene.AddSceneObject(sog3);
-            region1 = scene.RegionInfo.RegionHandle;
-            region2 = scene2.RegionInfo.RegionHandle;
-            region3 = scene3.RegionInfo.RegionHandle;
        }
        [Test]
-        public void TestCloseAgent()
+        public void TestCreateDuplicateRootScenePresence()
        {
            TestHelpers.InMethod();
 //            TestHelpers.EnableLogging();
+            UUID spUuid = TestHelpers.ParseTail(0x1);
            TestScene scene = new SceneHelpers().SetupScene();
-            ScenePresence sp = SceneHelpers.AddScenePresence(scene, TestHelpers.ParseTail(0x1));
+            SceneHelpers.AddScenePresence(scene, spUuid);
+            SceneHelpers.AddScenePresence(scene, spUuid);
-            Assert.That(scene.AuthenticateHandler.GetAgentCircuitData(sp.UUID), Is.Not.Null);
+            Assert.That(scene.AuthenticateHandler.GetAgentCircuitData(spUuid), Is.Not.Null);
            Assert.That(scene.AuthenticateHandler.GetAgentCircuits().Count, Is.EqualTo(1));
+            ScenePresence sp = scene.GetScenePresence(spUuid);
+            Assert.That(sp, Is.Not.Null);
+            Assert.That(sp.IsChildAgent, Is.False);
+            Assert.That(sp.UUID, Is.EqualTo(spUuid));
+        }
+        [Test]
+        public void TestCloseAgent()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+            TestScene scene = new SceneHelpers().SetupScene();
+            ScenePresence sp = SceneHelpers.AddScenePresence(scene, TestHelpers.ParseTail(0x1));
            scene.IncomingCloseAgent(sp.UUID);
            Assert.That(scene.GetScenePresence(sp.UUID), Is.Null);
@@ -266,99 +298,99 @@ namespace OpenSim.Region.Framework.Scenes.Tests
        // but things are synchronous among them. So there should be
        // 3 threads in here.
        //[Test]
-        public void T021_TestCrossToNewRegion()
+//        public void T021_TestCrossToNewRegion()
-        {
+//        {
-            TestHelpers.InMethod();
+//            TestHelpers.InMethod();
+//
-            scene.RegisterRegionWithGrid();
+//            scene.RegisterRegionWithGrid();
-            scene2.RegisterRegionWithGrid();
+//            scene2.RegisterRegionWithGrid();
+//
-            // Adding child agent to region 1001
+//            // Adding child agent to region 1001
-            string reason;
+//            string reason;
-            scene2.NewUserConnection(acd1,0, out reason);
+//            scene2.NewUserConnection(acd1,0, out reason);
-            scene2.AddNewClient(testclient, PresenceType.User);
+//            scene2.AddNewClient(testclient, PresenceType.User);
+//
-            ScenePresence presence = scene.GetScenePresence(agent1);
+//            ScenePresence presence = scene.GetScenePresence(agent1);
-            presence.MakeRootAgent(new Vector3(0,unchecked(Constants.RegionSize-1),0), true);
+//            presence.MakeRootAgent(new Vector3(0,unchecked(Constants.RegionSize-1),0), true);
+//
-            ScenePresence presence2 = scene2.GetScenePresence(agent1);
+//            ScenePresence presence2 = scene2.GetScenePresence(agent1);
+//
-           // Adding neighbour region caps info to presence2
+//           // Adding neighbour region caps info to presence2
+//
-            string cap = presence.ControllingClient.RequestClientInfo().CapsPath;
+//            string cap = presence.ControllingClient.RequestClientInfo().CapsPath;
-            presence2.AddNeighbourRegion(region1, cap);
+//            presence2.AddNeighbourRegion(region1, cap);
+//
-            Assert.That(presence.IsChildAgent, Is.False, "Did not start root in origin region.");
+//            Assert.That(presence.IsChildAgent, Is.False, "Did not start root in origin region.");
-            Assert.That(presence2.IsChildAgent, Is.True, "Is not a child on destination region.");
+//            Assert.That(presence2.IsChildAgent, Is.True, "Is not a child on destination region.");
+//
-            // Cross to x+1
+//            // Cross to x+1
-            presence.AbsolutePosition = new Vector3(Constants.RegionSize+1,3,100);
+//            presence.AbsolutePosition = new Vector3(Constants.RegionSize+1,3,100);
-            presence.Update();
+//            presence.Update();
+//
-            EventWaitHandle wh = new EventWaitHandle (false, EventResetMode.AutoReset, "Crossing");
+//            EventWaitHandle wh = new EventWaitHandle (false, EventResetMode.AutoReset, "Crossing");
+//
-            // Mimicking communication between client and server, by waiting OK from client
+//            // Mimicking communication between client and server, by waiting OK from client
-            // sent by TestClient.CrossRegion call. Originally, this is network comm.
+//            // sent by TestClient.CrossRegion call. Originally, this is network comm.
-            if (!wh.WaitOne(5000,false))
+//            if (!wh.WaitOne(5000,false))
-            {
+//            {
-                presence.Update();
+//                presence.Update();
-                if (!wh.WaitOne(8000,false))
+//                if (!wh.WaitOne(8000,false))
-                    throw new ArgumentException("1 - Timeout waiting for signal/variable.");
+//                    throw new ArgumentException("1 - Timeout waiting for signal/variable.");
-            }
+//            }
+//
-            // This is a TestClient specific method that fires OnCompleteMovementToRegion event, which
+//            // This is a TestClient specific method that fires OnCompleteMovementToRegion event, which
-            // would normally be fired after receiving the reply packet from comm. done on the last line.
+//            // would normally be fired after receiving the reply packet from comm. done on the last line.
-            testclient.CompleteMovement();
+//            testclient.CompleteMovement();
+//
-            // Crossings are asynchronous
+//            // Crossings are asynchronous
-            int timer = 10;
+//            int timer = 10;
+//
-            // Make sure cross hasn't already finished
+//            // Make sure cross hasn't already finished
-            if (!presence.IsInTransit && !presence.IsChildAgent)
+//            if (!presence.IsInTransit && !presence.IsChildAgent)
-            {
+//            {
-                // If not and not in transit yet, give it some more time
+//                // If not and not in transit yet, give it some more time
-                Thread.Sleep(5000);
+//                Thread.Sleep(5000);
-            }
+//            }
+//
-            // Enough time, should at least be in transit by now.
+//            // Enough time, should at least be in transit by now.
-            while (presence.IsInTransit && timer > 0)
+//            while (presence.IsInTransit && timer > 0)
-            {
+//            {
-                Thread.Sleep(1000);
+//                Thread.Sleep(1000);
-                timer-=1;
+//                timer-=1;
-            }
+//            }
+//
-            Assert.That(timer,Is.GreaterThan(0),"Timed out waiting to cross 2->1.");
+//            Assert.That(timer,Is.GreaterThan(0),"Timed out waiting to cross 2->1.");
-            Assert.That(presence.IsChildAgent, Is.True, "Did not complete region cross as expected.");
+//            Assert.That(presence.IsChildAgent, Is.True, "Did not complete region cross as expected.");
-            Assert.That(presence2.IsChildAgent, Is.False, "Did not receive root status after receiving agent.");
+//            Assert.That(presence2.IsChildAgent, Is.False, "Did not receive root status after receiving agent.");
+//
-            // Cross Back
+//            // Cross Back
-            presence2.AbsolutePosition = new Vector3(-10, 3, 100);
+//            presence2.AbsolutePosition = new Vector3(-10, 3, 100);
-            presence2.Update();
+//            presence2.Update();
+//
-            if (!wh.WaitOne(5000,false))
+//            if (!wh.WaitOne(5000,false))
-            {
+//            {
-                presence2.Update();
+//                presence2.Update();
-                if (!wh.WaitOne(8000,false))
+//                if (!wh.WaitOne(8000,false))
-                    throw new ArgumentException("2 - Timeout waiting for signal/variable.");
+//                    throw new ArgumentException("2 - Timeout waiting for signal/variable.");
-            }
+//            }
-            testclient.CompleteMovement();
+//            testclient.CompleteMovement();
+//
-            if (!presence2.IsInTransit && !presence2.IsChildAgent)
+//            if (!presence2.IsInTransit && !presence2.IsChildAgent)
-            {
+//            {
-                // If not and not in transit yet, give it some more time
+//                // If not and not in transit yet, give it some more time
-                Thread.Sleep(5000);
+//                Thread.Sleep(5000);
-            }
+//            }
+//
-            // Enough time, should at least be in transit by now.
+//            // Enough time, should at least be in transit by now.
-            while (presence2.IsInTransit && timer > 0)
+//            while (presence2.IsInTransit && timer > 0)
-            {
+//            {
-                Thread.Sleep(1000);
+//                Thread.Sleep(1000);
-                timer-=1;
+//                timer-=1;
-            }
+//            }
+//
-            Assert.That(timer,Is.GreaterThan(0),"Timed out waiting to cross 1->2.");
+//            Assert.That(timer,Is.GreaterThan(0),"Timed out waiting to cross 1->2.");
-            Assert.That(presence2.IsChildAgent, Is.True, "Did not return from region as expected.");
+//            Assert.That(presence2.IsChildAgent, Is.True, "Did not return from region as expected.");
-            Assert.That(presence.IsChildAgent, Is.False, "Presence was not made root in old region again.");
+//            Assert.That(presence.IsChildAgent, Is.False, "Presence was not made root in old region again.");
-        }
+//        }
    }
 }
 \ No newline at end of file
diff --git a/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTeleportTests.cs b/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTeleportTests.cs
index a407f01..37b5184 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTeleportTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTeleportTests.cs
@@ -301,7 +301,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
            sp.AbsolutePosition = preTeleportPosition;
            // Make sceneB refuse CreateAgent
-            sceneB.LoginsDisabled = true;
+            sceneB.LoginsEnabled = false;
            sceneA.RequestTeleportLocation(
                sp.ControllingClient,
diff --git a/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs b/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
index 86f33eb..3b83e58 100644
--- a/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
+++ b/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCClientView.cs
@@ -38,6 +38,7 @@ using OpenMetaverse;
 using OpenMetaverse.Packets;
 using OpenSim.Framework;
 using OpenSim.Framework.Client;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Scenes;
 namespace OpenSim.Region.OptionalModules.Agent.InternetRelayClientView.Server
diff --git a/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCServer.cs b/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCServer.cs
index a7c5020..9d27386 100644
--- a/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCServer.cs
+++ b/OpenSim/Region/OptionalModules/Agent/InternetRelayClientView/Server/IRCServer.cs
@@ -34,6 +34,7 @@ using System.Text;
 using System.Threading;
 using log4net;
 using OpenSim.Framework;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Scenes;
 namespace OpenSim.Region.OptionalModules.Agent.InternetRelayClientView.Server
diff --git a/OpenSim/Region/OptionalModules/Agent/UDP/Linden/LindenUDPInfoModule.cs b/OpenSim/Region/OptionalModules/Agent/UDP/Linden/LindenUDPInfoModule.cs
index a7ebecc..5fe5948 100644
--- a/OpenSim/Region/OptionalModules/Agent/UDP/Linden/LindenUDPInfoModule.cs
+++ b/OpenSim/Region/OptionalModules/Agent/UDP/Linden/LindenUDPInfoModule.cs
@@ -35,7 +35,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.ClientStack.LindenUDP;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
@@ -82,18 +82,6 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                m_scenes[scene.RegionInfo.RegionID] = scene;
            scene.AddCommand(
-                "Comms", this, "image queues clear",
-                "image queues clear <first-name> <last-name>",
-                "Clear the image queues (textures downloaded via UDP) for a particular client.",
-                (mod, cmd) => MainConsole.Instance.Output(HandleImageQueuesClear(cmd)));
-            scene.AddCommand(
-                "Comms", this, "image queues show",
-                "image queues show <first-name> <last-name>",
-                "Show the image queues (textures downloaded via UDP) for a particular client.",
-                (mod, cmd) => MainConsole.Instance.Output(GetImageQueuesReport(cmd)));
-            scene.AddCommand(
                "Comms", this, "show pqueues",
                "show pqueues [full]",
                "Show priority queue data for each client", 
@@ -105,8 +93,15 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                "Comms", this, "show queues",
                "show queues [full]",
                "Show queue data for each client", 
-                "Without the 'full' option, only root agents are shown."
+                "Without the 'full' option, only root agents are shown.\n"
-                  + "  With the 'full' option child agents are also shown.",                                          
+                    + "With the 'full' option child agents are also shown.\n\n"
+                    + "Type          - Rt is a root (avatar) client whilst cd is a child (neighbour interacting) client.\n"
+                    + "Since Last In - Time in milliseconds since last packet received.\n"
+                    + "Pkts In       - Number of packets processed from the client.\n"
+                    + "Pkts Out      - Number of packets sent to the client.\n"
+                    + "Pkts Resent   - Number of packets resent to the client.\n"
+                    + "Bytes Unacked - Number of bytes transferred to the client that are awaiting acknowledgement.\n"
+                    + "Q Pkts *      - Number of packets of various types (land, wind, etc.) to be sent to the client that are waiting for available bandwidth.\n",
                (mod, cmd) => MainConsole.Instance.Output(GetQueuesReport(cmd)));
            scene.AddCommand(
@@ -114,6 +109,12 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                "show image queues <first-name> <last-name>",
                "Show the image queues (textures downloaded via UDP) for a particular client.",
                (mod, cmd) => MainConsole.Instance.Output(GetImageQueuesReport(cmd)));
+            scene.AddCommand(
+                "Comms", this, "clear image queues",
+                "clear image queues <first-name> <last-name>",
+                "Clear the image queues (textures downloaded via UDP) for a particular client.",
+                (mod, cmd) => MainConsole.Instance.Output(HandleImageQueuesClear(cmd)));
            
            scene.AddCommand(
                "Comms", this, "show throttles",
@@ -373,17 +374,22 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
            int maxNameLength = 18;                                    
            int maxRegionNameLength = 14;
            int maxTypeLength = 4;
-            int totalInfoFieldsLength = maxNameLength + columnPadding + maxRegionNameLength + columnPadding + maxTypeLength + columnPadding;                        
+            int totalInfoFieldsLength
+                = maxNameLength + columnPadding
+                + maxRegionNameLength + columnPadding
+                + maxTypeLength + columnPadding;
                                    
            report.Append(GetColumnEntry("User", maxNameLength, columnPadding));
            report.Append(GetColumnEntry("Region", maxRegionNameLength, columnPadding));
            report.Append(GetColumnEntry("Type", maxTypeLength, columnPadding));
            
            report.AppendFormat(
-                "{0,7} {1,7} {2,7} {3,9} {4,7} {5,7} {6,7} {7,7} {8,7} {9,8} {10,7} {11,7}\n",
+                "{0,7} {1,7} {2,7} {3,7} {4,9} {5,7} {6,7} {7,7} {8,7} {9,7} {10,8} {11,7} {12,7}\n",
+                "Since",
+                "Pkts",
                "Pkts",
                "Pkts",
-                "Pkts",                                
                "Bytes",
                "Q Pkts",
                "Q Pkts",
@@ -396,7 +402,8 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
    
            report.AppendFormat("{0,-" + totalInfoFieldsLength +  "}", "");
            report.AppendFormat(
-                "{0,7} {1,7} {2,7} {3,9} {4,7} {5,7} {6,7} {7,7} {8,7} {9,8} {10,7} {11,7}\n",
+                "{0,7} {1,7} {2,7} {3,7} {4,9} {5,7} {6,7} {7,7} {8,7} {9,7} {10,8} {11,7} {12,7}\n",
+                "Last In",
                "In",
                "Out",
                "Resent",
@@ -417,22 +424,22 @@ namespace OpenSim.Region.CoreModules.UDP.Linden
                    scene.ForEachClient(
                        delegate(IClientAPI client)
                        {
-                            if (client is IStatsCollector)
+                            bool isChild = client.SceneAgent.IsChildAgent;
-                            {
+                            if (isChild && !showChildren)
-                                bool isChild = client.SceneAgent.IsChildAgent;
+                                return;
-                                if (isChild && !showChildren)
+                    
-                                    return;
+                            string name = client.Name;
-                        
+                            if (pname != "" && name != pname)
-                                string name = client.Name;
+                                return;
-                                if (pname != "" && name != pname)
-                                    return;
-                                string regionName = scene.RegionInfo.RegionName;
+                            string regionName = scene.RegionInfo.RegionName;
-                                
-                                report.Append(GetColumnEntry(name, maxNameLength, columnPadding));
+                            report.Append(GetColumnEntry(name, maxNameLength, columnPadding));
-                                report.Append(GetColumnEntry(regionName, maxRegionNameLength, columnPadding));
+                            report.Append(GetColumnEntry(regionName, maxRegionNameLength, columnPadding));
-                                report.Append(GetColumnEntry(isChild ? "Cd" : "Rt", maxTypeLength, columnPadding));                                  
+                            report.Append(GetColumnEntry(isChild ? "Cd" : "Rt", maxTypeLength, columnPadding));
+                            if (client is IStatsCollector)
+                            {
                                IStatsCollector stats = (IStatsCollector)client;
                        
                                report.AppendLine(stats.Report());
diff --git a/OpenSim/Region/OptionalModules/Avatar/Appearance/AppearanceInfoModule.cs b/OpenSim/Region/OptionalModules/Avatar/Appearance/AppearanceInfoModule.cs
index 6bb6729..d718a2f 100644
--- a/OpenSim/Region/OptionalModules/Avatar/Appearance/AppearanceInfoModule.cs
+++ b/OpenSim/Region/OptionalModules/Avatar/Appearance/AppearanceInfoModule.cs
@@ -36,7 +36,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.ClientStack.LindenUDP;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/OptionalModules/Avatar/Attachments/AttachmentsCommandModule.cs b/OpenSim/Region/OptionalModules/Avatar/Attachments/AttachmentsCommandModule.cs
index 1b9e3ac..d68aabc 100644
--- a/OpenSim/Region/OptionalModules/Avatar/Attachments/AttachmentsCommandModule.cs
+++ b/OpenSim/Region/OptionalModules/Avatar/Attachments/AttachmentsCommandModule.cs
@@ -36,7 +36,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.ClientStack.LindenUDP;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/OptionalModules/Avatar/Chat/IRCConnector.cs b/OpenSim/Region/OptionalModules/Avatar/Chat/IRCConnector.cs
index cd401a6..ca956fb 100644
--- a/OpenSim/Region/OptionalModules/Avatar/Chat/IRCConnector.cs
+++ b/OpenSim/Region/OptionalModules/Avatar/Chat/IRCConnector.cs
@@ -37,6 +37,7 @@ using OpenMetaverse;
 using log4net;
 using Nini.Config;
 using OpenSim.Framework;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
diff --git a/OpenSim/Region/OptionalModules/Avatar/Friends/FriendsCommandsModule.cs b/OpenSim/Region/OptionalModules/Avatar/Friends/FriendsCommandsModule.cs
index 2602050..4e84364 100644
--- a/OpenSim/Region/OptionalModules/Avatar/Friends/FriendsCommandsModule.cs
+++ b/OpenSim/Region/OptionalModules/Avatar/Friends/FriendsCommandsModule.cs
@@ -37,7 +37,7 @@ using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Framework.Console;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.ClientStack.LindenUDP;
 using OpenSim.Region.CoreModules.Avatar.Friends;
 using OpenSim.Region.Framework.Interfaces;
diff --git a/OpenSim/Region/OptionalModules/PhysicsParameters/PhysicsParameters.cs b/OpenSim/Region/OptionalModules/PhysicsParameters/PhysicsParameters.cs
index e452124..40f7fbc 100755
--- a/OpenSim/Region/OptionalModules/PhysicsParameters/PhysicsParameters.cs
+++ b/OpenSim/Region/OptionalModules/PhysicsParameters/PhysicsParameters.cs
@@ -47,7 +47,7 @@ namespace OpenSim.Region.OptionalModules.PhysicsParameters
    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "PhysicsParameters")]
    public class PhysicsParameters : ISharedRegionModule
    {
-        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 //        private static string LogHeader = "[PHYSICS PARAMETERS]";
        private List<Scene> m_scenes = new List<Scene>();
diff --git a/OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs b/OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs
index 600cafb..fff3a32 100644
--- a/OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs
+++ b/OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs
@@ -31,16 +31,14 @@ using System.Reflection;
 using System.Net;
 using System.IO;
 using System.Text;
 using log4net;
 using Nini.Config;
 using OpenMetaverse;
 using OpenMetaverse.StructuredData;
-using OpenSim.Services.Interfaces;
 using OpenSim.Framework;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
+using OpenSim.Services.Interfaces;
 namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
 {
@@ -50,16 +48,15 @@ namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
        private IConfig m_config = null;
-        private bool m_ScriptRez;
        private bool m_firstEmptyCompileQueue;
        private bool m_oarFileLoading;
        private bool m_lastOarLoadedOk;
        private int m_channelNotify = -1000;
        private bool m_enabled = false;
-        private bool m_disable_logins = false;
+        private bool m_disable_logins;
        private string m_uri = string.Empty;
        
-        Scene m_scene = null;
+        Scene m_scene;
        
        #region INonSharedRegionModule interface
@@ -93,53 +90,40 @@ namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
            m_scene.RegisterModuleInterface<IRegionReadyModule>(this);
-            m_ScriptRez = false;
            m_firstEmptyCompileQueue = true;
            m_oarFileLoading = false;
            m_lastOarLoadedOk = true;
            m_scene.EventManager.OnOarFileLoaded += OnOarFileLoaded;
-            m_scene.EventManager.OnRezScript  += OnRezScript;
-            m_scene.EventManager.OnLoginsEnabled += OnLoginsEnabled;
            m_log.DebugFormat("[RegionReady]: Enabled for region {0}", scene.RegionInfo.RegionName);
-            if (m_disable_logins == true)
+            if (m_disable_logins)
            {
-                scene.LoginLock = true;
+                m_scene.LoginLock = true;
-                scene.LoginsDisabled = true;
+                m_scene.EventManager.OnEmptyScriptCompileQueue += OnEmptyScriptCompileQueue;
-                m_log.InfoFormat("[RegionReady]: Region {0} - logins disabled during initialization.",m_scene.RegionInfo.RegionName);
+                m_log.InfoFormat("[RegionReady]: Region {0} - LOGINS DISABLED DURING INITIALIZATION.", m_scene.Name);
-                if(m_uri != string.Empty)
+                if (m_uri != string.Empty)
                {
                    RRAlert("disabled");
                }
            }
        }
-        void OnRezScript (uint localID, UUID itemID, string script, int startParam, bool postOnRez, string engine, int stateSource)
-        {
-            if (!m_ScriptRez)
-            {
-                m_ScriptRez = true;
-                m_scene.EventManager.OnEmptyScriptCompileQueue += OnEmptyScriptCompileQueue;
-                m_scene.EventManager.OnRezScript  -= OnRezScript;
-            }
-        }
        public void RemoveRegion(Scene scene)
        {
            if (!m_enabled)
                return;
-            m_scene.EventManager.OnEmptyScriptCompileQueue -= OnEmptyScriptCompileQueue;
            m_scene.EventManager.OnOarFileLoaded -= OnOarFileLoaded;
-            m_scene.EventManager.OnLoginsEnabled -= OnLoginsEnabled;
-            if(m_uri != string.Empty)
+            if (m_disable_logins)
-            {
+                m_scene.EventManager.OnEmptyScriptCompileQueue -= OnEmptyScriptCompileQueue;
+            if (m_uri != string.Empty)
                RRAlert("shutdown");
-            }
            m_scene = null;
        }
@@ -159,7 +143,6 @@ namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
        #endregion
        void OnEmptyScriptCompileQueue(int numScriptsFailed, string message)
        {
            m_log.DebugFormat("[RegionReady]: Script compile queue empty!");
@@ -193,75 +176,80 @@ namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
                                 m_scene.RegionInfo.RegionName, c.Message, m_channelNotify);
                m_scene.EventManager.TriggerOnChatBroadcast(this, c);
-                m_scene.EventManager.TriggerLoginsEnabled(m_scene.RegionInfo.RegionName);
-                m_scene.SceneGridService.InformNeighborsThatRegionisUp(m_scene.RequestModuleInterface<INeighbourService>(), m_scene.RegionInfo);
+                TriggerRegionReady(m_scene);
            }
        }
        void OnOarFileLoaded(Guid requestId, string message)
        {
            m_oarFileLoading = true;
            if (message==String.Empty) 
            {
                m_lastOarLoadedOk = true;
-            } else {
+            }
+            else
+            {
                m_log.WarnFormat("[RegionReady]: Oar file load errors: {0}", message);
                m_lastOarLoadedOk = false;
            }
        }
-        // This will be triggerd by Scene if we have no scripts
+        /// <summary>
-        // m_ScriptsRezzing will be false if there were none
+        /// This will be triggered by Scene directly if it contains no scripts on startup.  Otherwise it is triggered
-        // else it will be true and we should wait on the
+        /// when the script compile queue is empty after initial region startup.
-        // empty compile queue
+        /// </summary>
-        void OnLoginsEnabled(string regionName)
+        /// <param name='scene'></param>
+        public void TriggerRegionReady(IScene scene)
        {
-            if (m_disable_logins == true)
+            m_scene.EventManager.OnEmptyScriptCompileQueue -= OnEmptyScriptCompileQueue;
+            m_scene.LoginLock = false;
+            if (!m_scene.StartDisabled)
            {
-                if (m_scene.StartDisabled == false)
+                m_scene.LoginsEnabled = true;
-                {
-                    m_scene.LoginsDisabled = false;
-                    m_scene.LoginLock = false;
-                    m_scene.EventManager.OnEmptyScriptCompileQueue -= OnEmptyScriptCompileQueue;
+                // m_log.InfoFormat("[RegionReady]: Logins enabled for {0}, Oar {1}",
+                //                 m_scene.RegionInfo.RegionName, m_oarFileLoading.ToString());
-                    // m_log.InfoFormat("[RegionReady]: Logins enabled for {0}, Oar {1}",
+                m_log.InfoFormat(
-                    //                 m_scene.RegionInfo.RegionName, m_oarFileLoading.ToString());
+                    "[RegionReady]: INITIALIZATION COMPLETE FOR {0} - LOGINS ENABLED", m_scene.Name);
+            }
-                    m_log.InfoFormat(
+            m_scene.SceneGridService.InformNeighborsThatRegionisUp(
-                        "[RegionReady]: INITIALIZATION COMPLETE FOR {0} - LOGINS ENABLED", m_scene.Name);
+                m_scene.RequestModuleInterface<INeighbourService>(), m_scene.RegionInfo);
-                    if (m_uri != string.Empty)
+            if (m_uri != string.Empty)
-                    {
+            {
-                        RRAlert("enabled");
+                RRAlert("enabled");
-                    }
-                }
            }
+            m_scene.Ready = true;
        }
        public void OarLoadingAlert(string msg)
        {
            // Let's bypass this for now until some better feedback can be established
            //
-            return;
-            if (msg == "load")
+//            if (msg == "load")
-            {
+//            {
-                m_scene.EventManager.OnEmptyScriptCompileQueue += OnEmptyScriptCompileQueue;
+//                m_scene.EventManager.OnEmptyScriptCompileQueue += OnEmptyScriptCompileQueue;
-                m_scene.EventManager.OnOarFileLoaded += OnOarFileLoaded;
+//                m_scene.EventManager.OnOarFileLoaded += OnOarFileLoaded;
-                m_scene.EventManager.OnLoginsEnabled += OnLoginsEnabled;
+//                m_scene.EventManager.OnLoginsEnabled += OnLoginsEnabled;
-                m_scene.EventManager.OnRezScript  += OnRezScript;
+//                m_scene.EventManager.OnRezScript  += OnRezScript;
-                m_oarFileLoading = true;
+//                m_oarFileLoading = true;
-                m_firstEmptyCompileQueue = true;
+//                m_firstEmptyCompileQueue = true;
-                
+//                
-                m_scene.LoginsDisabled = true;
+//                m_scene.LoginsDisabled = true;
-                m_scene.LoginLock = true;
+//                m_scene.LoginLock = true;
-                if ( m_uri != string.Empty )
+//                if ( m_uri != string.Empty )
-                {
+//                {
-                    RRAlert("loading oar");
+//                    RRAlert("loading oar");
-                    RRAlert("disabled");
+//                    RRAlert("disabled");
-                }
+//                }
-            }
+//            }
        }
        public void RRAlert(string status)
diff --git a/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs b/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
index 74a85e2..705a847 100644
--- a/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
+++ b/OpenSim/Region/OptionalModules/Scripting/ScriptModuleComms/ScriptModuleCommsModule.cs
@@ -46,6 +46,8 @@ namespace OpenSim.Region.OptionalModules.Scripting.ScriptModuleComms
        private static readonly ILog m_log =
            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private Dictionary<string,object> m_constants = new Dictionary<string,object>();
 #region ScriptInvocation
        protected class ScriptInvocationData
        {
@@ -269,6 +271,37 @@ namespace OpenSim.Region.OptionalModules.Scripting.ScriptModuleComms
            Delegate fn = LookupScriptInvocation(fname);
            return fn.DynamicInvoke(olist.ToArray());
        }
+        /// <summary>
+        /// Operation to for a region module to register a constant to be used
+        /// by the script engine
+        /// </summary>
+        public void RegisterConstant(string cname, object value)
+        {
+            m_log.DebugFormat("[MODULE COMMANDS] register constant <{0}> with value {1}",cname,value.ToString());
+            lock (m_constants)
+            {
+                m_constants.Add(cname,value);
+            }
+        }
+        /// <summary>
+        /// Operation to check for a registered constant
+        /// </summary>
+        public object LookupModConstant(string cname)
+        {
+            // m_log.DebugFormat("[MODULE COMMANDS] lookup constant <{0}>",cname);
+            
+            lock (m_constants)
+            {
+                object value = null;
+                if (m_constants.TryGetValue(cname,out value))
+                    return value;
+            }
+            
+            return null;
+        }
 #endregion
    }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
index dc0c008..09e1f0c 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
@@ -41,7 +41,7 @@ public class BSCharacter : PhysicsActor
    private BSScene _scene;
    private String _avName;
-    private bool _stopped;
+    // private bool _stopped;
    private Vector3 _size;
    private Vector3 _scale;
    private PrimitiveBaseShape _pbs;
@@ -134,9 +134,9 @@ public class BSCharacter : PhysicsActor
    {
        base.RequestPhysicsterseUpdate();
    }
+    // No one calls this method so I don't know what it could possibly mean
    public override bool Stopped { 
-        get { return _stopped; } 
+        get { return false; } 
    }
    public override Vector3 Size { 
        get { return _size; } 
@@ -391,52 +391,47 @@ public class BSCharacter : PhysicsActor
        _mass = _density * _avatarVolume;
    }
-    // Set to 'true' if the individual changed items should be checked
-    //   (someday RequestPhysicsTerseUpdate() will take a bitmap of changed properties)
-    const bool SHOULD_CHECK_FOR_INDIVIDUAL_CHANGES = false;
    // The physics engine says that properties have updated. Update same and inform
    // the world that things have changed.
    public void UpdateProperties(EntityProperties entprop)
    {
+        /*
        bool changed = false;
-        if (SHOULD_CHECK_FOR_INDIVIDUAL_CHANGES) {
+        // we assign to the local variables so the normal set action does not happen
-            // we assign to the local variables so the normal set action does not happen
+        if (_position != entprop.Position) {
-            if (_position != entprop.Position) {
-                _position = entprop.Position;
-                changed = true;
-            }
-            if (_orientation != entprop.Rotation) {
-                _orientation = entprop.Rotation;
-                changed = true;
-            }
-            if (_velocity != entprop.Velocity) {
-                _velocity = entprop.Velocity;
-                changed = true;
-            }
-            if (_acceleration != entprop.Acceleration) {
-                _acceleration = entprop.Acceleration;
-                changed = true;
-            }
-            if (_rotationalVelocity != entprop.RotationalVelocity) {
-                _rotationalVelocity = entprop.RotationalVelocity;
-                changed = true;
-            }
-            if (changed) {
-                // m_log.DebugFormat("{0}: UpdateProperties: id={1}, c={2}, pos={3}, rot={4}", LogHeader, LocalID, changed, _position, _orientation);
-                // Avatar movement is not done by generating this event. There is code in the heartbeat
-                //   loop that updates avatars.
-                // base.RequestPhysicsterseUpdate();
-            }
-        }
-        else {
            _position = entprop.Position;
+            changed = true;
+        }
+        if (_orientation != entprop.Rotation) {
            _orientation = entprop.Rotation;
+            changed = true;
+        }
+        if (_velocity != entprop.Velocity) {
            _velocity = entprop.Velocity;
+            changed = true;
+        }
+        if (_acceleration != entprop.Acceleration) {
            _acceleration = entprop.Acceleration;
+            changed = true;
+        }
+        if (_rotationalVelocity != entprop.RotationalVelocity) {
            _rotationalVelocity = entprop.RotationalVelocity;
+            changed = true;
+        }
+        if (changed) {
+            // m_log.DebugFormat("{0}: UpdateProperties: id={1}, c={2}, pos={3}, rot={4}", LogHeader, LocalID, changed, _position, _orientation);
+            // Avatar movement is not done by generating this event. There is code in the heartbeat
+            //   loop that updates avatars.
            // base.RequestPhysicsterseUpdate();
        }
+        */
+        _position = entprop.Position;
+        _orientation = entprop.Rotation;
+        _velocity = entprop.Velocity;
+        _acceleration = entprop.Acceleration;
+        _rotationalVelocity = entprop.RotationalVelocity;
+        // Avatars don't report theirr changes the usual way. Changes are checked for in the heartbeat loop.
+        // base.RequestPhysicsterseUpdate();
    }
    // Called by the scene when a collision with this object is reported
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs b/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs
new file mode 100755
index 0000000..ea3093a
--- /dev/null
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyrightD
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+using System;
+using System.Collections.Generic;
+using System.Text;
+using OpenMetaverse;
+namespace OpenSim.Region.Physics.BulletSPlugin
+{
+public class BSConstraint : IDisposable
+{
+    private BulletSim m_world;
+    private BulletBody m_body1;
+    private BulletBody m_body2;
+    private BulletConstraint m_constraint;
+    private bool m_enabled = false;
+    public BSConstraint(BulletSim world, BulletBody obj1, BulletBody obj2,
+                    Vector3 frame1, Quaternion frame1rot,
+                    Vector3 frame2, Quaternion frame2rot
+        )
+    {
+        m_world = world;
+        m_body1 = obj1;
+        m_body2 = obj2;
+        m_constraint = new BulletConstraint(BulletSimAPI.CreateConstraint2(m_world.Ptr, m_body1.Ptr, m_body2.Ptr,
+                            frame1, frame1rot,
+                            frame2, frame2rot,
+                            true /*useLinearReferenceFrameA*/, true /*disableCollisionsBetweenLinkedBodies*/));
+        m_enabled = true;
+    }
+    public void Dispose()
+    {
+        if (m_enabled)
+        {
+            // BulletSimAPI.RemoveConstraint(m_world.ID, m_body1.ID, m_body2.ID);
+            BulletSimAPI.DestroyConstraint2(m_world.Ptr, m_constraint.Ptr);
+            m_enabled = false;
+        }
+    }
+    public BulletBody Body1 { get { return m_body1; } }
+    public BulletBody Body2 { get { return m_body2; } }
+    public bool SetLinearLimits(Vector3 low, Vector3 high)
+    {
+        bool ret = false;
+        if (m_enabled)
+            ret = BulletSimAPI.SetLinearLimits2(m_constraint.Ptr, low, high);
+        return ret;
+    }
+    public bool SetAngularLimits(Vector3 low, Vector3 high)
+    {
+        bool ret = false;
+        if (m_enabled)
+            ret = BulletSimAPI.SetAngularLimits2(m_constraint.Ptr, low, high);
+        return ret;
+    }
+    public bool SetCFMAndERP(float cfm, float erp)
+    {
+        bool ret = true;
+        BulletSimAPI.SetConstraintParam2(m_constraint.Ptr, ConstraintParams.BT_CONSTRAINT_STOP_CFM, cfm, ConstraintParamAxis.AXIS_ALL);
+        BulletSimAPI.SetConstraintParam2(m_constraint.Ptr, ConstraintParams.BT_CONSTRAINT_STOP_ERP, erp, ConstraintParamAxis.AXIS_ALL);
+        BulletSimAPI.SetConstraintParam2(m_constraint.Ptr, ConstraintParams.BT_CONSTRAINT_CFM, cfm, ConstraintParamAxis.AXIS_ALL);
+        return ret;
+    }
+    public bool UseFrameOffset(bool useOffset)
+    {
+        bool ret = false;
+        float onOff = useOffset ? ConfigurationParameters.numericTrue : ConfigurationParameters.numericFalse;
+        if (m_enabled)
+            ret = BulletSimAPI.UseFrameOffset2(m_constraint.Ptr, onOff);
+        return ret;
+    }
+    public bool TranslationalLimitMotor(bool enable, float targetVelocity, float maxMotorForce)
+    {
+        bool ret = false;
+        float onOff = enable ? ConfigurationParameters.numericTrue : ConfigurationParameters.numericFalse;
+        if (m_enabled)
+            ret = BulletSimAPI.TranslationalLimitMotor2(m_constraint.Ptr, onOff, targetVelocity, maxMotorForce);
+        return ret;
+    }
+    public bool CalculateTransforms()
+    {
+        bool ret = false;
+        if (m_enabled)
+        {
+            BulletSimAPI.CalculateTransforms2(m_constraint.Ptr);
+            ret = true;
+        }
+        return ret;
+    }
+}
+}
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs b/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs
new file mode 100755
index 0000000..c88e645
--- /dev/null
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyrightD
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+using System;
+using System.Collections.Generic;
+using System.Text;
+using log4net;
+using OpenMetaverse;
+namespace OpenSim.Region.Physics.BulletSPlugin
+{
+public class BSConstraintCollection : IDisposable
+{
+    // private static readonly ILog m_log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+    // private static readonly string LogHeader = "[CONSTRAINT COLLECTION]";
+    delegate bool ConstraintAction(BSConstraint constrain);
+    private List<BSConstraint> m_constraints;
+    private BulletSim m_world;
+    public BSConstraintCollection(BulletSim world)
+    {
+        m_world = world;
+        m_constraints = new List<BSConstraint>();
+    }
+    public void Dispose()
+    {
+        this.Clear();
+    }
+    public void Clear()
+    {
+        foreach (BSConstraint cons in m_constraints)
+        {
+            cons.Dispose();
+        }
+        m_constraints.Clear();
+    }
+    public BSConstraint CreateConstraint(BulletSim world, BulletBody obj1, BulletBody obj2,
+                    Vector3 frame1, Quaternion frame1rot,
+                    Vector3 frame2, Quaternion frame2rot)
+    {
+        BSConstraint constrain = new BSConstraint(world, obj1, obj2, frame1, frame1rot, frame2, frame2rot);
+        this.AddConstraint(constrain);
+        return constrain;
+    }
+    public bool AddConstraint(BSConstraint cons)
+    {
+        // There is only one constraint between any bodies. Remove any old just to make sure.
+        RemoveAndDestroyConstraint(cons.Body1, cons.Body2);
+        m_constraints.Add(cons);
+        return true;
+    }
+    // Get the constraint between two bodies. There can be only one.
+    // Return 'true' if a constraint was found.
+    public bool TryGetConstraint(BulletBody body1, BulletBody body2, out BSConstraint returnConstraint)
+    {
+        bool found = false;
+        BSConstraint foundConstraint = null;
+        uint lookingID1 = body1.ID;
+        uint lookingID2 = body2.ID;
+        ForEachConstraint(delegate(BSConstraint constrain)
+        {
+            if ((constrain.Body1.ID == lookingID1 && constrain.Body2.ID == lookingID2)
+                || (constrain.Body1.ID == lookingID2 && constrain.Body2.ID == lookingID1))
+            {
+                foundConstraint = constrain;
+                found = true;
+            }
+            return found;
+        });
+        returnConstraint = foundConstraint;
+        return found;
+    }
+    // Remove any constraint between the passed bodies.
+    // Presumed there is only one such constraint possible.
+    // Return 'true' if a constraint was found and destroyed.
+    public bool RemoveAndDestroyConstraint(BulletBody body1, BulletBody body2)
+    {
+        // return BulletSimAPI.RemoveConstraint(m_world.ID, obj1.ID, obj2.ID);
+        bool ret = false;
+        BSConstraint constrain;
+        if (this.TryGetConstraint(body1, body2, out constrain))
+        {
+            // remove the constraint from our collection
+            m_constraints.Remove(constrain);
+            // tell the engine that all its structures need to be freed
+            constrain.Dispose();
+            // we destroyed something
+            ret = true;
+        }
+        return ret;
+    }
+    // Remove all constraints that reference the passed body.
+    // Return 'true' if any constraints were destroyed.
+    public bool RemoveAndDestroyConstraint(BulletBody body1)
+    {
+        // return BulletSimAPI.RemoveConstraintByID(m_world.ID, obj.ID);
+        List<BSConstraint> toRemove = new List<BSConstraint>();
+        uint lookingID = body1.ID;
+        ForEachConstraint(delegate(BSConstraint constrain)
+        {
+            if (constrain.Body1.ID == lookingID || constrain.Body2.ID == lookingID)
+            {
+                toRemove.Add(constrain);
+            }
+            return false;
+        });
+        lock (m_constraints)
+        {
+            foreach (BSConstraint constrain in toRemove)
+            {
+                m_constraints.Remove(constrain);
+                constrain.Dispose();
+            }
+        }
+        return (toRemove.Count > 0);
+    }
+    public bool RecalculateAllConstraints()
+    {
+        foreach (BSConstraint constrain in m_constraints)
+        {
+            constrain.CalculateTransforms();
+        }
+        return true;
+    }
+    // Lock the constraint list and loop through it.
+    // The constraint action returns 'true' if it wants the loop aborted.
+    private void ForEachConstraint(ConstraintAction action)
+    {
+        lock (m_constraints)
+        {
+            foreach (BSConstraint constrain in m_constraints)
+            {
+                if (action(constrain))
+                    break;
+            }
+        }
+    }
+}
+}
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
index eb20eb3..c197e61 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
@@ -57,7 +57,6 @@ namespace OpenSim.Region.Physics.BulletSPlugin
        private int frcount = 0;                                        // Used to limit dynamics debug output to
                                                                        // every 100th frame
-        // private BSScene m_parentScene = null;
        private BSPrim m_prim;      // the prim this dynamic controller belongs to
        // Vehicle properties
@@ -131,8 +130,9 @@ namespace OpenSim.Region.Physics.BulletSPlugin
            m_type = Vehicle.TYPE_NONE;
        }
-        internal void ProcessFloatVehicleParam(Vehicle pParam, float pValue)
+        internal void ProcessFloatVehicleParam(Vehicle pParam, float pValue, float timestep)
        {
+            DetailLog("{0},ProcessFloatVehicleParam,param={1},val={2}", m_prim.LocalID, pParam, pValue);
            switch (pParam)
            {
                case Vehicle.ANGULAR_DEFLECTION_EFFICIENCY:
@@ -229,8 +229,9 @@ namespace OpenSim.Region.Physics.BulletSPlugin
            }
        }//end ProcessFloatVehicleParam
-        internal void ProcessVectorVehicleParam(Vehicle pParam, Vector3 pValue)
+        internal void ProcessVectorVehicleParam(Vehicle pParam, Vector3 pValue, float timestep)
        {
+            DetailLog("{0},ProcessVectorVehicleParam,param={1},val={2}", m_prim.LocalID, pParam, pValue);
            switch (pParam)
            {
                case Vehicle.ANGULAR_FRICTION_TIMESCALE:
@@ -265,6 +266,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
        internal void ProcessRotationVehicleParam(Vehicle pParam, Quaternion pValue)
        {
+            DetailLog("{0},ProcessRotationalVehicleParam,param={1},val={2}", m_prim.LocalID, pParam, pValue);
            switch (pParam)
            {
                case Vehicle.REFERENCE_FRAME:
@@ -278,6 +280,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
        internal void ProcessVehicleFlags(int pParam, bool remove)
        {
+            DetailLog("{0},ProcessVehicleFlags,param={1},remove={2}", m_prim.LocalID, pParam, remove);
            if (remove)
            {
                if (pParam == -1)
@@ -434,6 +437,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
        internal void ProcessTypeChange(Vehicle pType)
        {
+            DetailLog("{0},ProcessTypeChange,type={1}", m_prim.LocalID, pType);
            // Set Defaults For Type
            m_type = pType;
            switch (pType)
@@ -594,11 +598,10 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                    m_flags |= (VehicleFlag.LIMIT_ROLL_ONLY);
                    m_Hoverflags |= (VehicleFlag.HOVER_GLOBAL_HEIGHT);
                    break;
            }
        }//end SetDefaultsForType
-        internal void Step(float pTimestep,  BSScene pParentScene)
+        internal void Step(float pTimestep)
        {
            if (m_type == Vehicle.TYPE_NONE) return;
@@ -606,21 +609,34 @@ namespace OpenSim.Region.Physics.BulletSPlugin
            if (frcount > 100)
                frcount = 0;
-            MoveLinear(pTimestep, pParentScene);
+            MoveLinear(pTimestep);
            MoveAngular(pTimestep);
            LimitRotation(pTimestep);
+            DetailLog("{0},Dynamics,done,pos={1},force={2},velocity={3},angvel={4}", 
+                    m_prim.LocalID, m_prim.Position, m_prim.Force, m_prim.Velocity, m_prim.RotationalVelocity);
        }// end Step
-        private void MoveLinear(float pTimestep, BSScene _pParentScene)
+        private void MoveLinear(float pTimestep)
        {
-            if (!m_linearMotorDirection.ApproxEquals(Vector3.Zero, 0.01f))  // requested m_linearMotorDirection is significant
+            // requested m_linearMotorDirection is significant
+            // if (!m_linearMotorDirection.ApproxEquals(Vector3.Zero, 0.01f))
+            if (m_linearMotorDirection.LengthSquared() > 0.0001f)
            {
+                Vector3 origDir = m_linearMotorDirection;
+                Vector3 origVel = m_lastLinearVelocityVector;
                // add drive to body
-                Vector3 addAmount = m_linearMotorDirection/(m_linearMotorTimescale/pTimestep);
+                // Vector3 addAmount = m_linearMotorDirection/(m_linearMotorTimescale/pTimestep);
-                m_lastLinearVelocityVector += (addAmount*10);  // lastLinearVelocityVector is the current body velocity vector?
+                Vector3 addAmount = m_linearMotorDirection/(m_linearMotorTimescale);
+                // lastLinearVelocityVector is the current body velocity vector?
+                // RA: Not sure what the *10 is for. A correction for pTimestep?
+                // m_lastLinearVelocityVector += (addAmount*10);  
+                m_lastLinearVelocityVector += addAmount;  
                // This will work temporarily, but we really need to compare speed on an axis
                // KF: Limit body velocity to applied velocity?
+                // Limit the velocity vector to less than the last set linear motor direction
                if (Math.Abs(m_lastLinearVelocityVector.X) > Math.Abs(m_linearMotorDirectionLASTSET.X))
                    m_lastLinearVelocityVector.X = m_linearMotorDirectionLASTSET.X;
                if (Math.Abs(m_lastLinearVelocityVector.Y) > Math.Abs(m_linearMotorDirectionLASTSET.Y))
@@ -630,76 +646,93 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                // decay applied velocity
                Vector3 decayfraction = ((Vector3.One/(m_linearMotorDecayTimescale/pTimestep)));
-                //Console.WriteLine("decay: " + decayfraction);
                m_linearMotorDirection -= m_linearMotorDirection * decayfraction * 0.5f;
-                //Console.WriteLine("actual: " + m_linearMotorDirection);
+                /*
+                Vector3 addAmount = (m_linearMotorDirection - m_lastLinearVelocityVector)/m_linearMotorTimescale;
+                m_lastLinearVelocityVector += addAmount;
+                float decayfraction = (1.0f - 1.0f / m_linearMotorDecayTimescale);
+                m_linearMotorDirection *= decayfraction;
+                 */
+                DetailLog("{0},MoveLinear,nonZero,origdir={1},origvel={2},add={3},decay={4},dir={5},vel={6}",
+                    m_prim.LocalID, origDir, origVel, addAmount, decayfraction, m_linearMotorDirection, m_lastLinearVelocityVector);
            }
            else
-            {        // requested is not significant
+            {
-                    // if what remains of applied is small, zero it.
+                // if what remains of applied is small, zero it.
-                if (m_lastLinearVelocityVector.ApproxEquals(Vector3.Zero, 0.01f))
+                // if (m_lastLinearVelocityVector.ApproxEquals(Vector3.Zero, 0.01f))
-                    m_lastLinearVelocityVector = Vector3.Zero;
+                //     m_lastLinearVelocityVector = Vector3.Zero;
+                m_linearMotorDirection = Vector3.Zero;
+                m_lastLinearVelocityVector = Vector3.Zero;
            }
            // convert requested object velocity to world-referenced vector
-            m_dir = m_lastLinearVelocityVector;
+            Quaternion rotq = m_prim.Orientation;
-            Quaternion rot = m_prim.Orientation;
+            m_dir = m_lastLinearVelocityVector * rotq;
-            Quaternion rotq = new Quaternion(rot.X, rot.Y, rot.Z, rot.W);    // rotq = rotation of object
-            m_dir *= rotq;                            // apply obj rotation to velocity vector
+            // Add the various forces into m_dir which will be our new direction vector (velocity)
-            // add Gravity andBuoyancy
+            // add Gravity and Buoyancy
            // KF: So far I have found no good method to combine a script-requested
            // .Z velocity and gravity. Therefore only 0g will used script-requested
            // .Z velocity. >0g (m_VehicleBuoyancy < 1) will used modified gravity only.
            Vector3 grav = Vector3.Zero;
-            // There is some gravity, make a gravity force vector
+            // There is some gravity, make a gravity force vector that is applied after object velocity.
-            // that is applied after object velocity.
-            float objMass = m_prim.Mass;
            // m_VehicleBuoyancy: -1=2g; 0=1g; 1=0g;
-            grav.Z = _pParentScene.DefaultGravity.Z * objMass * (1f - m_VehicleBuoyancy);
+            grav.Z = m_prim.Scene.DefaultGravity.Z * m_prim.Mass * (1f - m_VehicleBuoyancy);
            // Preserve the current Z velocity
            Vector3 vel_now = m_prim.Velocity;
            m_dir.Z = vel_now.Z;        // Preserve the accumulated falling velocity
            Vector3 pos = m_prim.Position;
+            Vector3 posChange = pos;
 //            Vector3 accel = new Vector3(-(m_dir.X - m_lastLinearVelocityVector.X / 0.1f), -(m_dir.Y - m_lastLinearVelocityVector.Y / 0.1f), m_dir.Z - m_lastLinearVelocityVector.Z / 0.1f);
-            Vector3 posChange = new Vector3();
-            posChange.X = pos.X - m_lastPositionVector.X;
-            posChange.Y = pos.Y - m_lastPositionVector.Y;
-            posChange.Z = pos.Z - m_lastPositionVector.Z;
            double Zchange = Math.Abs(posChange.Z);
            if (m_BlockingEndPoint != Vector3.Zero)
            {
+                bool changed = false;
                if (pos.X >= (m_BlockingEndPoint.X - (float)1))
                {
                    pos.X -= posChange.X + 1;
-                    m_prim.Position = pos;
+                    changed = true;
                }
                if (pos.Y >= (m_BlockingEndPoint.Y - (float)1))
                {
                    pos.Y -= posChange.Y + 1;
-                    m_prim.Position = pos;
+                    changed = true;
                }
                if (pos.Z >= (m_BlockingEndPoint.Z - (float)1))
                {
                    pos.Z -= posChange.Z + 1;
-                    m_prim.Position = pos;
+                    changed = true;
                }
                if (pos.X <= 0)
                {
                    pos.X += posChange.X + 1;
-                    m_prim.Position = pos;
+                    changed = true;
                }
                if (pos.Y <= 0)
                {
                    pos.Y += posChange.Y + 1;
+                    changed = true;
+                }
+                if (changed)
+                {
                    m_prim.Position = pos;
+                    DetailLog("{0},MoveLinear,blockingEndPoint,block={1},origPos={2},pos={3}",
+                                m_prim.LocalID, m_BlockingEndPoint, posChange, pos);
                }
            }
-            if (pos.Z < _pParentScene.GetTerrainHeightAtXY(pos.X, pos.Y))
+            // If below the terrain, move us above the ground a little.
+            if (pos.Z < m_prim.Scene.GetTerrainHeightAtXYZ(pos))
            {
-                pos.Z = _pParentScene.GetTerrainHeightAtXY(pos.X, pos.Y) + 2;
+                pos.Z = m_prim.Scene.GetTerrainHeightAtXYZ(pos) + 2;
                m_prim.Position = pos;
+                DetailLog("{0},MoveLinear,terrainHeight,pos={1}", m_prim.LocalID, pos);
            }
            // Check if hovering
@@ -708,11 +741,11 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                // We should hover, get the target height
                if ((m_Hoverflags & VehicleFlag.HOVER_WATER_ONLY) != 0)
                {
-                    m_VhoverTargetHeight = _pParentScene.GetWaterLevel() + m_VhoverHeight;
+                    m_VhoverTargetHeight = m_prim.Scene.GetWaterLevel() + m_VhoverHeight;
                }
                if ((m_Hoverflags & VehicleFlag.HOVER_TERRAIN_ONLY) != 0)
                {
-                    m_VhoverTargetHeight = _pParentScene.GetTerrainHeightAtXY(pos.X, pos.Y) + m_VhoverHeight;
+                    m_VhoverTargetHeight = m_prim.Scene.GetTerrainHeightAtXY(pos.X, pos.Y) + m_VhoverHeight;
                }
                if ((m_Hoverflags & VehicleFlag.HOVER_GLOBAL_HEIGHT) != 0)
                {
@@ -746,6 +779,8 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                    }
                }
+                DetailLog("{0},MoveLinear,hover,pos={1},dir={2},height={3},target={4}", m_prim.LocalID, pos, m_dir, m_VhoverHeight, m_VhoverTargetHeight);
 //                m_VhoverEfficiency = 0f;    // 0=boucy, 1=Crit.damped
 //                m_VhoverTimescale = 0f;        // time to acheive height
 //                pTimestep  is time since last frame,in secs
@@ -774,12 +809,13 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                {
                    grav.Z = (float)(grav.Z * 1.125);
                }
-                float terraintemp = _pParentScene.GetTerrainHeightAtXY(pos.X, pos.Y);
+                float terraintemp = m_prim.Scene.GetTerrainHeightAtXYZ(pos);
                float postemp = (pos.Z - terraintemp);
                if (postemp > 2.5f)
                {
                    grav.Z = (float)(grav.Z * 1.037125);
                }
+                DetailLog("{0},MoveLinear,limitMotorUp,grav={1}", m_prim.LocalID, grav);
                //End Experimental Values
            }
            if ((m_flags & (VehicleFlag.NO_X)) != 0)
@@ -800,32 +836,39 @@ namespace OpenSim.Region.Physics.BulletSPlugin
            // Apply velocity
            m_prim.Velocity = m_dir;
            // apply gravity force
-            m_prim.Force = grav;
+            // Why is this set here? The physics engine already does gravity.
+            // m_prim.AddForce(grav, false);
+            // m_prim.Force = grav;
-            // apply friction
+            // Apply friction
            Vector3 decayamount = Vector3.One / (m_linearFrictionTimescale / pTimestep);
            m_lastLinearVelocityVector -= m_lastLinearVelocityVector * decayamount;
+            DetailLog("{0},MoveLinear,done,pos={1},vel={2},force={3},decay={4}", 
+                        m_prim.LocalID, m_lastPositionVector, m_dir, grav, decayamount);
        } // end MoveLinear()
        private void MoveAngular(float pTimestep)
        {
-            /*
+            // m_angularMotorDirection         // angular velocity requested by LSL motor
-            private Vector3 m_angularMotorDirection = Vector3.Zero;            // angular velocity requested by LSL motor
+            // m_angularMotorApply             // application frame counter
-            private int m_angularMotorApply = 0;                            // application frame counter
+            // m_angularMotorVelocity          // current angular motor velocity (ramps up and down)
-             private float m_angularMotorVelocity = 0;                        // current angular motor velocity (ramps up and down)
+            // m_angularMotorTimescale         // motor angular velocity ramp up rate
-            private float m_angularMotorTimescale = 0;                        // motor angular velocity ramp up rate
+            // m_angularMotorDecayTimescale    // motor angular velocity decay rate
-            private float m_angularMotorDecayTimescale = 0;                    // motor angular velocity decay rate
+            // m_angularFrictionTimescale      // body angular velocity  decay rate
-            private Vector3 m_angularFrictionTimescale = Vector3.Zero;        // body angular velocity  decay rate
+            // m_lastAngularVelocity           // what was last applied to body
-            private Vector3 m_lastAngularVelocity = Vector3.Zero;            // what was last applied to body
-            */
            // Get what the body is doing, this includes 'external' influences
            Vector3 angularVelocity = m_prim.RotationalVelocity;
-   //         Vector3 angularVelocity = Vector3.Zero;
            if (m_angularMotorApply > 0)
            {
+                // Rather than snapping the angular motor velocity from the old value to
+                //    a newly set velocity, this routine steps the value from the previous
+                //    value (m_angularMotorVelocity) to the requested value (m_angularMotorDirection).
+                // There are m_angularMotorApply steps.
+                Vector3 origAngularVelocity = m_angularMotorVelocity;
                // ramp up to new value
                //   current velocity  +=                         error                       /    (time to get there / step interval)
                //                               requested speed            -  last motor speed
@@ -833,23 +876,21 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                m_angularMotorVelocity.Y += (m_angularMotorDirection.Y - m_angularMotorVelocity.Y) /  (m_angularMotorTimescale / pTimestep);
                m_angularMotorVelocity.Z += (m_angularMotorDirection.Z - m_angularMotorVelocity.Z) /  (m_angularMotorTimescale / pTimestep);
+                DetailLog("{0},MoveAngular,angularMotorApply,apply={1},origvel={2},dir={3},vel={4}", 
+                        m_prim.LocalID,m_angularMotorApply,origAngularVelocity, m_angularMotorDirection, m_angularMotorVelocity);
                m_angularMotorApply--;        // This is done so that if script request rate is less than phys frame rate the expected
                                            // velocity may still be acheived.
            }
            else
            {
-                // no motor recently applied, keep the body velocity
+                // No motor recently applied, keep the body velocity
-        /*        m_angularMotorVelocity.X = angularVelocity.X;
-                m_angularMotorVelocity.Y = angularVelocity.Y;
-                m_angularMotorVelocity.Z = angularVelocity.Z; */
                // and decay the velocity
                m_angularMotorVelocity -= m_angularMotorVelocity /  (m_angularMotorDecayTimescale / pTimestep);
            } // end motor section
            // Vertical attractor section
            Vector3 vertattr = Vector3.Zero;
            if (m_verticalAttractionTimescale < 300)
            {
                float VAservo = 0.2f / (m_verticalAttractionTimescale * pTimestep);
@@ -871,7 +912,6 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                // Error is 0 (no error) to +/- 2 (max error)
                // scale it by VAservo
                verterr = verterr * VAservo;
-//if (frcount == 0) Console.WriteLine("VAerr=" + verterr);
                // As the body rotates around the X axis, then verterr.Y increases; Rotated around Y then .X increases, so
                // Change  Body angular velocity  X based on Y, and Y based on X. Z is not changed.
@@ -884,11 +924,15 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                vertattr.X += bounce * angularVelocity.X;
                vertattr.Y += bounce * angularVelocity.Y;
+                DetailLog("{0},MoveAngular,verticalAttraction,verterr={1},bounce={2},vertattr={3}", 
+                            m_prim.LocalID, verterr, bounce, vertattr);
            } // else vertical attractor is off
-    //        m_lastVertAttractor = vertattr;
+            // m_lastVertAttractor = vertattr;
            // Bank section tba
            // Deflection section tba
            // Sum velocities
@@ -898,11 +942,13 @@ namespace OpenSim.Region.Physics.BulletSPlugin
            {
                m_lastAngularVelocity.X = 0;
                m_lastAngularVelocity.Y = 0;
+                DetailLog("{0},MoveAngular,noDeflectionUp,lastAngular={1}", m_prim.LocalID, m_lastAngularVelocity);
            }
            if (m_lastAngularVelocity.ApproxEquals(Vector3.Zero, 0.01f))
            {
                m_lastAngularVelocity = Vector3.Zero; // Reduce small value to zero.
+                DetailLog("{0},MoveAngular,zeroSmallValues,lastAngular={1}", m_prim.LocalID, m_lastAngularVelocity);
            }
             // apply friction
@@ -912,10 +958,12 @@ namespace OpenSim.Region.Physics.BulletSPlugin
            // Apply to the body
            m_prim.RotationalVelocity = m_lastAngularVelocity;
+            DetailLog("{0},MoveAngular,done,decay={1},lastAngular={2}", m_prim.LocalID, decayamount, m_lastAngularVelocity);
        } //end MoveAngular
        internal void LimitRotation(float timestep)
        {
-            Quaternion rotq = m_prim.Orientation;    // rotq = rotation of object
+            Quaternion rotq = m_prim.Orientation;
            Quaternion m_rot = rotq;
            bool changed = false;
            if (m_RollreferenceFrame != Quaternion.Identity)
@@ -923,18 +971,22 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                if (rotq.X >= m_RollreferenceFrame.X)
                {
                    m_rot.X = rotq.X - (m_RollreferenceFrame.X / 2);
+                    changed = true;
                }
                if (rotq.Y >= m_RollreferenceFrame.Y)
                {
                    m_rot.Y = rotq.Y - (m_RollreferenceFrame.Y / 2);
+                    changed = true;
                }
                if (rotq.X <= -m_RollreferenceFrame.X)
                {
                    m_rot.X = rotq.X + (m_RollreferenceFrame.X / 2);
+                    changed = true;
                }
                if (rotq.Y <= -m_RollreferenceFrame.Y)
                {
                    m_rot.Y = rotq.Y + (m_RollreferenceFrame.Y / 2);
+                    changed = true;
                }
                changed = true;
            }
@@ -944,8 +996,23 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                m_rot.Y = 0;
                changed = true;
            }
+            if ((m_flags & VehicleFlag.LOCK_ROTATION) != 0)
+            {
+                m_rot.X = 0;
+                m_rot.Y = 0;
+                changed = true;
+            }
            if (changed)
                m_prim.Orientation = m_rot;
+            DetailLog("{0},LimitRotation,done,changed={1},orig={2},new={3}", m_prim.LocalID, changed, rotq, m_rot);
+        }
+        // Invoke the detailed logger and output something if it's enabled.
+        private void DetailLog(string msg, params Object[] args)
+        {
+            if (m_prim.Scene.VehicleLoggingEnabled)
+                m_prim.Scene.PhysicsLogging.Write(msg, args);
        }
    }
 }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs b/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs
new file mode 100755
index 0000000..6f8430c
--- /dev/null
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs
@@ -0,0 +1,352 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyrightD
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+using System;
+using System.Collections.Generic;
+using System.Text;
+using OMV = OpenMetaverse;
+namespace OpenSim.Region.Physics.BulletSPlugin
+{
+public class BSLinkset
+{
+    private static string LogHeader = "[BULLETSIM LINKSET]";
+    private BSPrim m_linksetRoot;
+    public BSPrim Root { get { return m_linksetRoot; } }
+    private BSScene m_scene;
+    private List<BSPrim> m_children;
+    // We lock the diddling of linkset classes to prevent any badness.
+    // This locks the modification of the instances of this class. Changes
+    //    to the physical representation is done via the tainting mechenism.
+    private object m_linksetActivityLock = new Object();
+    // We keep the prim's mass in the linkset structure since it could be dependent on other prims
+    private float m_mass;
+    public float LinksetMass 
+    { 
+        get 
+        {
+            m_mass = ComputeLinksetMass();
+            return m_mass;
+        }
+    }
+    public OMV.Vector3 CenterOfMass
+    {
+        get { return ComputeLinksetCenterOfMass(); }
+    }
+    public OMV.Vector3 GeometricCenter
+    {
+        get { return ComputeLinksetGeometricCenter(); }
+    }
+    public BSLinkset(BSScene scene, BSPrim parent)
+    {
+        // A simple linkset of one (no children)
+        m_scene = scene;
+        m_linksetRoot = parent;
+        m_children = new List<BSPrim>();
+        m_mass = parent.MassRaw;
+    }
+    // Link to a linkset where the child knows the parent.
+    // Parent changing should not happen so do some sanity checking.
+    // We return the parent's linkset so the child can track it's membership.
+    public BSLinkset AddMeToLinkset(BSPrim child, BSPrim parent)
+    {
+        lock (m_linksetActivityLock)
+        {
+            parent.Linkset.AddChildToLinkset(child);
+        }
+        return parent.Linkset;
+    }
+    public BSLinkset RemoveMeFromLinkset(BSPrim child)
+    {
+        lock (m_linksetActivityLock)
+        {
+            if (IsRoot(child))
+            {
+                // if root of linkset, take the linkset apart
+                while (m_children.Count > 0)
+                {
+                    // Note that we don't do a foreach because the remove routine
+                    //    takes it out of the list.
+                    RemoveChildFromLinkset(m_children[0]);
+                }
+                m_children.Clear(); // just to make sure
+            }
+            else
+            {
+                // Just removing a child from an existing linkset
+                RemoveChildFromLinkset(child);
+            }
+        }
+        // The child is down to a linkset of just itself
+        return new BSLinkset(m_scene, child);
+    }
+    // An existing linkset had one of its members rebuilt or something.
+    // Go through the linkset and rebuild the pointers to the bodies of the linkset members.
+    public BSLinkset RefreshLinkset(BSPrim requestor)
+    {
+        BSLinkset ret = requestor.Linkset;
+        lock (m_linksetActivityLock)
+        {
+            System.IntPtr aPtr = BulletSimAPI.GetBodyHandle2(m_scene.World.Ptr, m_linksetRoot.LocalID);
+            if (aPtr == System.IntPtr.Zero)
+            {
+                // That's odd. We can't find the root of the linkset.
+                // The linkset is somehow dead.  The requestor is now a member of a linkset of one.
+                DetailLog("{0},RefreshLinkset.RemoveRoot,child={1}", m_linksetRoot.LocalID, m_linksetRoot.LocalID);
+                ret = RemoveMeFromLinkset(m_linksetRoot);
+            }
+            else
+            {
+                // Reconstruct the pointer to the body of the linkset root.
+                DetailLog("{0},RefreshLinkset.RebuildRoot,rootID={1},ptr={2}", m_linksetRoot.LocalID, m_linksetRoot.LocalID, aPtr);
+                m_linksetRoot.Body = new BulletBody(m_linksetRoot.LocalID, aPtr);
+                List<BSPrim> toRemove = new List<BSPrim>();
+                foreach (BSPrim bsp in m_children)
+                {
+                    aPtr = BulletSimAPI.GetBodyHandle2(m_scene.World.Ptr, bsp.LocalID);
+                    if (aPtr == System.IntPtr.Zero)
+                    {
+                        toRemove.Add(bsp);
+                    }
+                    else
+                    {
+                        // Reconstruct the pointer to the body of the linkset root.
+                        DetailLog("{0},RefreshLinkset.RebuildChild,rootID={1},ptr={2}", bsp.LocalID, m_linksetRoot.LocalID, aPtr);
+                        bsp.Body = new BulletBody(bsp.LocalID, aPtr);
+                    }
+                }
+                foreach (BSPrim bsp in toRemove)
+                {
+                    RemoveChildFromLinkset(bsp);
+                }
+            }
+        }
+        return ret;
+    }
+    // Return 'true' if the passed object is the root object of this linkset
+    public bool IsRoot(BSPrim requestor)
+    {
+        return (requestor.LocalID == m_linksetRoot.LocalID);
+    }
+    // Return 'true' if this linkset has any children (more than the root member)
+    public bool HasAnyChildren { get { return (m_children.Count > 0); } }
+    // Return 'true' if this child is in this linkset
+    public bool HasChild(BSPrim child)
+    {
+        bool ret = false;
+        foreach (BSPrim bp in m_children)
+        {
+            if (child.LocalID == bp.LocalID)
+            {
+                ret = true;
+                break;
+            }
+        }
+        return ret;
+    }
+    private float ComputeLinksetMass()
+    {
+        float mass = m_linksetRoot.MassRaw;
+        foreach (BSPrim bp in m_children)
+        {
+            mass += bp.MassRaw;
+        }
+        return mass;
+    }
+    private OMV.Vector3 ComputeLinksetCenterOfMass()
+    {
+        OMV.Vector3 com = m_linksetRoot.Position * m_linksetRoot.MassRaw;
+        float totalMass = m_linksetRoot.MassRaw;
+        foreach (BSPrim bp in m_children)
+        {
+            com += bp.Position * bp.MassRaw;
+            totalMass += bp.MassRaw;
+        }
+        com /= totalMass;
+        return com;
+    }
+    private OMV.Vector3 ComputeLinksetGeometricCenter()
+    {
+        OMV.Vector3 com = m_linksetRoot.Position;
+        foreach (BSPrim bp in m_children)
+        {
+            com += bp.Position * bp.MassRaw;
+        }
+        com /= m_children.Count + 1;
+        return com;
+    }
+    // I am the root of a linkset and a new child is being added
+    public void AddChildToLinkset(BSPrim pchild)
+    {
+        BSPrim child = pchild;
+        if (!HasChild(child))
+        {
+            m_children.Add(child);
+            m_scene.TaintedObject(delegate()
+            {
+                DebugLog("{0}: AddChildToLinkset: adding child {1} to {2}", LogHeader, child.LocalID, m_linksetRoot.LocalID);
+                DetailLog("{0},AddChildToLinkset,child={1}", m_linksetRoot.LocalID, pchild.LocalID);
+                PhysicallyLinkAChildToRoot(pchild);     // build the physical binding between me and the child
+            });
+        }
+        return;
+    }
+    // I am the root of a linkset and one of my children is being removed.
+    // Safe to call even if the child is not really in my linkset.
+    public void RemoveChildFromLinkset(BSPrim pchild)
+    {
+        BSPrim child = pchild;
+        if (m_children.Remove(child))
+        {
+            m_scene.TaintedObject(delegate()
+            {
+                DebugLog("{0}: RemoveChildFromLinkset: Removing constraint to {1}", LogHeader, child.LocalID);
+                DetailLog("{0},RemoveChildFromLinkset,child={1}", m_linksetRoot.LocalID, pchild.LocalID);
+                if (m_children.Count == 0)
+                {
+                    // if the linkset is empty, make sure all linkages have been removed
+                    PhysicallyUnlinkAllChildrenFromRoot();
+                }
+                else
+                {
+                    PhysicallyUnlinkAChildFromRoot(pchild);
+                }
+            });
+        }
+        else
+        {
+            // This will happen if we remove the root of the linkset first. Non-fatal occurance.
+            // m_scene.Logger.ErrorFormat("{0}: Asked to remove child from linkset that was not in linkset", LogHeader);
+        }
+        return;
+    }
+    // Create a constraint between me (root of linkset) and the passed prim (the child).
+    // Called at taint time!
+    private void PhysicallyLinkAChildToRoot(BSPrim childPrim)
+    {
+        // Zero motion for children so they don't interpolate
+        childPrim.ZeroMotion();
+        // relative position normalized to the root prim
+        OMV.Quaternion invThisOrientation = OMV.Quaternion.Inverse(m_linksetRoot.Orientation);
+        OMV.Vector3 childRelativePosition = (childPrim.Position - m_linksetRoot.Position) * invThisOrientation;
+        // relative rotation of the child to the parent
+        OMV.Quaternion childRelativeRotation = invThisOrientation * childPrim.Orientation;
+        // create a constraint that allows no freedom of movement between the two objects
+        // http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=4818
+        // DebugLog("{0}: CreateLinkset: Adding a constraint between root prim {1} and child prim {2}", LogHeader, LocalID, childPrim.LocalID);
+        DetailLog("{0},LinkAChildToMe,taint,root={1},child={2}", m_linksetRoot.LocalID, m_linksetRoot.LocalID, childPrim.LocalID);
+        BSConstraint constrain = m_scene.Constraints.CreateConstraint(
+                        m_scene.World, m_linksetRoot.Body, childPrim.Body,
+                        // childRelativePosition,
+                        // childRelativeRotation,
+                        OMV.Vector3.Zero,
+                        OMV.Quaternion.Identity,
+                        OMV.Vector3.Zero,
+                        OMV.Quaternion.Identity
+                        );
+        constrain.SetLinearLimits(OMV.Vector3.Zero, OMV.Vector3.Zero);
+        constrain.SetAngularLimits(OMV.Vector3.Zero, OMV.Vector3.Zero);
+        // tweek the constraint to increase stability
+        constrain.UseFrameOffset(m_scene.BoolNumeric(m_scene.Params.linkConstraintUseFrameOffset));
+        constrain.TranslationalLimitMotor(m_scene.BoolNumeric(m_scene.Params.linkConstraintEnableTransMotor),
+                        m_scene.Params.linkConstraintTransMotorMaxVel,
+                        m_scene.Params.linkConstraintTransMotorMaxForce);
+        constrain.SetCFMAndERP(m_scene.Params.linkConstraintCFM, m_scene.Params.linkConstraintERP);
+    }
+    // Remove linkage between myself and a particular child
+    // Called at taint time!
+    private void PhysicallyUnlinkAChildFromRoot(BSPrim childPrim)
+    {
+        DebugLog("{0}: PhysicallyUnlinkAChildFromRoot: RemoveConstraint between root prim {1} and child prim {2}", 
+                    LogHeader, m_linksetRoot.LocalID, childPrim.LocalID);
+        DetailLog("{0},PhysicallyUnlinkAChildFromRoot,taint,root={1},child={2}", m_linksetRoot.LocalID, m_linksetRoot.LocalID, childPrim.LocalID);
+        // BulletSimAPI.RemoveConstraint(_scene.WorldID, LocalID, childPrim.LocalID);
+        m_scene.Constraints.RemoveAndDestroyConstraint(m_linksetRoot.Body, childPrim.Body);
+    }
+    // Remove linkage between myself and any possible children I might have
+    // Called at taint time!
+    private void PhysicallyUnlinkAllChildrenFromRoot()
+    {
+        // DebugLog("{0}: PhysicallyUnlinkAllChildren:", LogHeader);
+        DetailLog("{0},PhysicallyUnlinkAllChildren,taint", m_linksetRoot.LocalID);
+        m_scene.Constraints.RemoveAndDestroyConstraint(m_linksetRoot.Body);
+        // BulletSimAPI.RemoveConstraintByID(_scene.WorldID, LocalID);
+    }
+    // Invoke the detailed logger and output something if it's enabled.
+    private void DebugLog(string msg, params Object[] args)
+    {
+        m_scene.Logger.DebugFormat(msg, args);
+    }
+    // Invoke the detailed logger and output something if it's enabled.
+    private void DetailLog(string msg, params Object[] args)
+    {
+        m_scene.PhysicsLogging.Write(msg, args);
+    }
+}
+}
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
index 130f1ca..a4ab702 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
@@ -42,6 +42,8 @@ public sealed class BSPrim : PhysicsActor
    private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
    private static readonly string LogHeader = "[BULLETS PRIM]";
+    private void DebugLog(string mm, params Object[] xx) { if (_scene.shouldDebugLog) m_log.DebugFormat(mm, xx); }
    private IMesh _mesh;
    private PrimitiveBaseShape _pbs;
    private ShapeData.PhysicsShapeType _shapeType;
@@ -50,6 +52,7 @@ public sealed class BSPrim : PhysicsActor
    private List<ConvexResult> _hulls;
    private BSScene _scene;
+    public BSScene Scene { get { return _scene; } }
    private String _avName;
    private uint _localID = 0;
@@ -63,7 +66,7 @@ public sealed class BSPrim : PhysicsActor
    private bool _isSelected;
    private bool _isVolumeDetect;
    private OMV.Vector3 _position;
-    private float _mass;
+    private float _mass;    // the mass of this object
    private float _density;
    private OMV.Vector3 _force;
    private OMV.Vector3 _velocity;
@@ -86,14 +89,25 @@ public sealed class BSPrim : PhysicsActor
    private bool _kinematic;
    private float _buoyancy;
-    private List<BSPrim> _childrenPrims;
+    // Membership in a linkset is controlled by this class.
-    private BSPrim _parentPrim;
+    private BSLinkset _linkset;
+    public BSLinkset Linkset
+    {
+        get { return _linkset; }
+        set { _linkset = value; }
+    }
    private int _subscribedEventsMs = 0;
    private int _nextCollisionOkTime = 0;
    long _collidingStep;
    long _collidingGroundStep;
+    private BulletBody m_body;
+    public BulletBody Body { 
+        get { return m_body; }
+        set { m_body = value; }
+    }
    private BSDynamics _vehicle;
    private OMV.Vector3 _PIDTarget;
@@ -127,17 +141,18 @@ public sealed class BSPrim : PhysicsActor
        _friction = _scene.Params.defaultFriction; // TODO: compute based on object material
        _density = _scene.Params.defaultDensity; // TODO: compute based on object material
        _restitution = _scene.Params.defaultRestitution;
-        _parentPrim = null;     // not a child or a parent
+        _linkset = new BSLinkset(_scene, this);     // a linkset of one
        _vehicle = new BSDynamics(this);    // add vehicleness
-        _childrenPrims = new List<BSPrim>();
+        _mass = CalculateMass();
-        if (_isPhysical)
-            _mass = CalculateMass();
-        else
-            _mass = 0f;
        // do the actual object creation at taint time
        _scene.TaintedObject(delegate()
        {
            RecreateGeomAndObject();
+            // Get the pointer to the physical body for this object.
+            // At the moment, we're still letting BulletSim manage the creation and destruction
+            //    of the object. Someday we'll move that into the C# code.
+            m_body = new BulletBody(LocalID, BulletSimAPI.GetBodyHandle2(_scene.World.Ptr, LocalID));
        });
    }
@@ -145,13 +160,19 @@ public sealed class BSPrim : PhysicsActor
    public void Destroy()
    {
        // m_log.DebugFormat("{0}: Destroy, id={1}", LogHeader, LocalID);
+        // DetailLog("{0},Destroy", LocalID);
        // Undo any vehicle properties
        _vehicle.ProcessTypeChange(Vehicle.TYPE_NONE);
        _scene.RemoveVehiclePrim(this);     // just to make sure
        _scene.TaintedObject(delegate()
        {
+            // Undo any links between me and any other object
+            _linkset = _linkset.RemoveMeFromLinkset(this);
            // everything in the C# world will get garbage collected. Tell the C++ world to free stuff.
-            BulletSimAPI.DestroyObject(_scene.WorldID, _localID);
+            BulletSimAPI.DestroyObject(_scene.WorldID, LocalID);
        });
    }
    
@@ -164,8 +185,9 @@ public sealed class BSPrim : PhysicsActor
            _size = value;
            _scene.TaintedObject(delegate()
            {
-                if (_isPhysical) _mass = CalculateMass();   // changing size changes the mass
+                _mass = CalculateMass();   // changing size changes the mass
-                BulletSimAPI.SetObjectScaleMass(_scene.WorldID, _localID, _scale, _mass, _isPhysical);
+                BulletSimAPI.SetObjectScaleMass(_scene.WorldID, _localID, _scale, (IsPhysical ? _mass : 0f), IsPhysical);
+                DetailLog("{0}: setSize: size={1}, mass={2}, physical={3}", LocalID, _size, _mass, IsPhysical);
                RecreateGeomAndObject();
            });
        } 
@@ -175,7 +197,7 @@ public sealed class BSPrim : PhysicsActor
            _pbs = value;
            _scene.TaintedObject(delegate()
            {
-                if (_isPhysical) _mass = CalculateMass();   // changing the shape changes the mass
+                _mass = CalculateMass();   // changing the shape changes the mass
                RecreateGeomAndObject();
            });
        } 
@@ -202,33 +224,10 @@ public sealed class BSPrim : PhysicsActor
    // link me to the specified parent
    public override void link(PhysicsActor obj) {
        BSPrim parent = obj as BSPrim;
-        // m_log.DebugFormat("{0}: link {1}/{2} to {3}", LogHeader, _avName, _localID, obj.LocalID);
+        DebugLog("{0}: link {1}/{2} to {3}", LogHeader, _avName, _localID, obj.LocalID);
-        // TODO: decide if this parent checking needs to happen at taint time
+        DetailLog("{0},link,parent={1}", LocalID, obj.LocalID);
-        if (_parentPrim == null)
-        {
+        _linkset = _linkset.AddMeToLinkset(this, parent);
-            if (parent != null)
-            {
-                // I don't have a parent so I am joining a linkset
-                parent.AddChildToLinkset(this);
-            }
-        }
-        else
-        {
-            // I already have a parent, is parenting changing?
-            if (parent != _parentPrim)
-            {
-                if (parent == null)
-                {
-                    // we are being removed from a linkset
-                    _parentPrim.RemoveChildFromLinkset(this);
-                }
-                else
-                {
-                    // asking to reparent a prim should not happen
-                    m_log.ErrorFormat("{0}: Reparenting a prim. ", LogHeader);
-                }
-            }
-        }
        return; 
    }
@@ -236,101 +235,92 @@ public sealed class BSPrim : PhysicsActor
    public override void delink() {
        // TODO: decide if this parent checking needs to happen at taint time
        // Race condition here: if link() and delink() in same simulation tick, the delink will not happen
-        // m_log.DebugFormat("{0}: delink {1}/{2}", LogHeader, _avName, _localID);
+        DebugLog("{0}: delink {1}/{2}. Parent={3}", LogHeader, _avName, _localID, 
-        if (_parentPrim != null)
+                            _linkset.Root._avName+"/"+_linkset.Root.LocalID.ToString());
-        {
+        DetailLog("{0},delink,parent={1}", LocalID, _linkset.Root.LocalID.ToString());
-            _parentPrim.RemoveChildFromLinkset(this);
-        }
-        return; 
-    }
-    // I am the root of a linkset and a new child is being added
-    public void AddChildToLinkset(BSPrim pchild)
-    {
-        BSPrim child = pchild;
-        _scene.TaintedObject(delegate()
-        {
-            if (!_childrenPrims.Contains(child))
-            {
-                _childrenPrims.Add(child);
-                child.ParentPrim = this;    // the child has gained a parent
-                RecreateGeomAndObject();    // rebuild my shape with the new child added
-            }
-        });
-        return;
-    }
-    // I am the root of a linkset and one of my children is being removed.
-    // Safe to call even if the child is not really in my linkset.
-    public void RemoveChildFromLinkset(BSPrim pchild)
-    {
-        BSPrim child = pchild;
-        _scene.TaintedObject(delegate()
-        {
-            if (_childrenPrims.Contains(child))
-            {
-                BulletSimAPI.RemoveConstraint(_scene.WorldID, child.LocalID, this.LocalID);
-                _childrenPrims.Remove(child);
-                child.ParentPrim = null;    // the child has lost its parent
-                RecreateGeomAndObject();    // rebuild my shape with the child removed
-            }
-            else
-            {
-                m_log.ErrorFormat("{0}: Asked to remove child from linkset that was not in linkset");
-            }
-        });
-        return;
-    }
-    public BSPrim ParentPrim
-    {
-        set { _parentPrim = value; }
-    }
-    // return true if we are the root of a linkset (there are children to manage)
+        _linkset.RemoveMeFromLinkset(this);
-    public bool IsRootOfLinkset
+        return; 
-    {
-        get { return (_parentPrim == null && _childrenPrims.Count != 0); }
    }
    // Set motion values to zero.
    // Do it to the properties so the values get set in the physics engine.
    // Push the setting of the values to the viewer.
-    private void ZeroMotion()
+    // Called at taint time!
+    public void ZeroMotion()
    {
-        Velocity = OMV.Vector3.Zero;
+        _velocity = OMV.Vector3.Zero;
        _acceleration = OMV.Vector3.Zero;
-        RotationalVelocity = OMV.Vector3.Zero;
+        _rotationalVelocity = OMV.Vector3.Zero;
-        base.RequestPhysicsterseUpdate();
+        // Zero some other properties directly into the physics engine
+        BulletSimAPI.SetVelocity2(Body.Ptr, OMV.Vector3.Zero);
+        BulletSimAPI.SetAngularVelocity2(Body.Ptr, OMV.Vector3.Zero);
+        BulletSimAPI.SetInterpolation2(Body.Ptr, OMV.Vector3.Zero, OMV.Vector3.Zero);
+        BulletSimAPI.ClearForces2(Body.Ptr);
    }
-    public override void LockAngularMotion(OMV.Vector3 axis) { return; }
+    public override void LockAngularMotion(OMV.Vector3 axis)
+    { 
+        DetailLog("{0},LockAngularMotion,call,axis={1}", LocalID, axis);
+        return;
+    }
    public override OMV.Vector3 Position { 
        get { 
-            // don't do the following GetObjectPosition because this function is called a zillion times
+            if (!_linkset.IsRoot(this))
+                // child prims move around based on their parent. Need to get the latest location
+                _position = BulletSimAPI.GetObjectPosition(_scene.WorldID, _localID);
+            // don't do the GetObjectPosition for root elements because this function is called a zillion times
            // _position = BulletSimAPI.GetObjectPosition(_scene.WorldID, _localID);
            return _position; 
        } 
        set {
            _position = value;
+            // TODO: what does it mean to set the position of a child prim?? Rebuild the constraint?
            _scene.TaintedObject(delegate()
            {
+                DetailLog("{0},SetPosition,taint,pos={1},orient={2}", LocalID, _position, _orientation);
                BulletSimAPI.SetObjectTranslation(_scene.WorldID, _localID, _position, _orientation);
-                // m_log.DebugFormat("{0}: setPosition: id={1}, position={2}", LogHeader, _localID, _position);
            });
        } 
    }
-    public override float Mass { 
-        get { return _mass; } 
+    // Return the effective mass of the object.
+    // If there are multiple items in the linkset, add them together for the root
+    public override float Mass
+    { 
+        get
+        {
+            return _linkset.LinksetMass;
+        }
+    }
+    // used when we only want this prim's mass and not the linkset thing
+    public float MassRaw { get { return _mass; } }
+    // Is this used?
+    public override OMV.Vector3 CenterOfMass
+    {
+        get { return _linkset.CenterOfMass; }
+    }
+    // Is this used?
+    public override OMV.Vector3 GeometricCenter
+    {
+        get { return _linkset.GeometricCenter; }
    }
    public override OMV.Vector3 Force { 
        get { return _force; } 
        set {
            _force = value;
            _scene.TaintedObject(delegate()
            {
-                BulletSimAPI.SetObjectForce(_scene.WorldID, _localID, _force);
+                DetailLog("{0},SetForce,taint,force={1}", LocalID, _force);
+                // BulletSimAPI.SetObjectForce(_scene.WorldID, _localID, _force);
+                BulletSimAPI.SetObjectForce2(Body.Ptr, _force);
            });
        } 
    }
@@ -341,15 +331,22 @@ public sealed class BSPrim : PhysicsActor
        } 
        set {
            Vehicle type = (Vehicle)value;
-            _vehicle.ProcessTypeChange(type);
            _scene.TaintedObject(delegate()
            {
+                DetailLog("{0},SetVehicleType,taint,type={1}", LocalID, type);
+                _vehicle.ProcessTypeChange(type);
                if (type == Vehicle.TYPE_NONE)
                {
                    _scene.RemoveVehiclePrim(this);
                }
                else
                {
+                    _scene.TaintedObject(delegate()
+                    {
+                        // Tell the physics engine to clear state
+                        BulletSimAPI.ClearForces2(this.Body.Ptr);
+                    });
                    // make it so the scene will call us each tick to do vehicle things
                    _scene.AddVehiclePrim(this);
                }
@@ -359,47 +356,59 @@ public sealed class BSPrim : PhysicsActor
    }
    public override void VehicleFloatParam(int param, float value) 
    {
-        _vehicle.ProcessFloatVehicleParam((Vehicle)param, value);
+        _scene.TaintedObject(delegate()
+        {
+            _vehicle.ProcessFloatVehicleParam((Vehicle)param, value, _scene.LastSimulatedTimestep);
+        });
    }
    public override void VehicleVectorParam(int param, OMV.Vector3 value) 
    {
-        _vehicle.ProcessVectorVehicleParam((Vehicle)param, value);
+        _scene.TaintedObject(delegate()
+        {
+            _vehicle.ProcessVectorVehicleParam((Vehicle)param, value, _scene.LastSimulatedTimestep);
+        });
    }
    public override void VehicleRotationParam(int param, OMV.Quaternion rotation) 
    {
-        _vehicle.ProcessRotationVehicleParam((Vehicle)param, rotation);
+        _scene.TaintedObject(delegate()
+        {
+            _vehicle.ProcessRotationVehicleParam((Vehicle)param, rotation);
+        });
    }
    public override void VehicleFlags(int param, bool remove) 
    {
-        _vehicle.ProcessVehicleFlags(param, remove);
+        _scene.TaintedObject(delegate()
+        {
+            _vehicle.ProcessVehicleFlags(param, remove);
+        });
    }
-    // Called each simulation step to advance vehicle characteristics
+    // Called each simulation step to advance vehicle characteristics.
+    // Called from Scene when doing simulation step so we're in taint processing time.
    public void StepVehicle(float timeStep)
    {
-        _vehicle.Step(timeStep, _scene);
+        if (IsPhysical)
+            _vehicle.Step(timeStep);
    }
    // Allows the detection of collisions with inherently non-physical prims. see llVolumeDetect for more
    public override void SetVolumeDetect(int param) {
        bool newValue = (param != 0);
-        if (_isVolumeDetect != newValue)
+        _isVolumeDetect = newValue;
+        _scene.TaintedObject(delegate()
        {
-            _isVolumeDetect = newValue;
+            SetObjectDynamic();
-            _scene.TaintedObject(delegate()
+        });
-            {
-                SetObjectDynamic();
-            });
-        }
        return; 
    }
-    public override OMV.Vector3 GeometricCenter { get { return OMV.Vector3.Zero; } }
-    public override OMV.Vector3 CenterOfMass { get { return OMV.Vector3.Zero; } }
    public override OMV.Vector3 Velocity { 
        get { return _velocity; } 
-        set { _velocity = value; 
+        set {
+            _velocity = value;
            _scene.TaintedObject(delegate()
            {
+                DetailLog("{0},SetVelocity,taint,vel={1}", LocalID, _velocity);
                BulletSimAPI.SetObjectVelocity(_scene.WorldID, LocalID, _velocity);
            });
        } 
@@ -407,6 +416,7 @@ public sealed class BSPrim : PhysicsActor
    public override OMV.Vector3 Torque { 
        get { return _torque; } 
        set { _torque = value; 
+            DetailLog("{0},SetTorque,call,torque={1}", LocalID, _torque);
        } 
    }
    public override float CollisionScore { 
@@ -419,13 +429,21 @@ public sealed class BSPrim : PhysicsActor
        set { _acceleration = value; }
    }
    public override OMV.Quaternion Orientation { 
-        get { return _orientation; } 
+        get {
+            if (!_linkset.IsRoot(this))
+            {
+                // Children move around because tied to parent. Get a fresh value.
+                _orientation = BulletSimAPI.GetObjectOrientation(_scene.WorldID, LocalID);
+            }
+            return _orientation;
+        } 
        set {
            _orientation = value;
-            // m_log.DebugFormat("{0}: set orientation: id={1}, ori={2}", LogHeader, LocalID, _orientation);
+            // TODO: what does it mean if a child in a linkset changes its orientation? Rebuild the constraint?
            _scene.TaintedObject(delegate()
            {
                // _position = BulletSimAPI.GetObjectPosition(_scene.WorldID, _localID);
+                DetailLog("{0},SetOrientation,taint,pos={1},orient={2}", LocalID, _position, _orientation);
                BulletSimAPI.SetObjectTranslation(_scene.WorldID, _localID, _position, _orientation);
            });
        } 
@@ -458,25 +476,24 @@ public sealed class BSPrim : PhysicsActor
        get { return !IsPhantom && !_isVolumeDetect; }
    }
-    // make gravity work if the object is physical and not selected
+    // Make gravity work if the object is physical and not selected
-    // no locking here because only called when it is safe
+    // No locking here because only called when it is safe
+    // Only called at taint time so it is save to call into Bullet.
    private void SetObjectDynamic()
    {
-        // m_log.DebugFormat("{0}: ID={1}, SetObjectDynamic: IsStatic={2}, IsSolid={3}", LogHeader, _localID, IsStatic, IsSolid);
+        // RA: remove this for the moment.
-        // non-physical things work best with a mass of zero
+        // The problem is that dynamic objects are hulls so if we are becoming physical
-        if (IsStatic)
+        //    the shape has to be checked and possibly built.
-        {
+        //    Maybe a VerifyCorrectPhysicalShape() routine?
-            _mass = 0f;
+        // RecreateGeomAndObject();
-        }
-        else
-        {
-            _mass = CalculateMass();
-            // If it's dynamic, make sure the hull has been created for it
-            // This shouldn't do much work if the object had previously been built
-            RecreateGeomAndObject();
-        }
+        float mass = _mass;
-        BulletSimAPI.SetObjectProperties(_scene.WorldID, LocalID, IsStatic, IsSolid, SubscribedEvents(), _mass);
+        // Bullet wants static objects have a mass of zero
+        if (IsStatic) 
+            mass = 0f;
+        DetailLog("{0},SetObjectDynamic,taint,static={1},solid={2},mass={3}", LocalID, IsStatic, IsSolid, mass);
+        BulletSimAPI.SetObjectProperties(_scene.WorldID, LocalID, IsStatic, IsSolid, SubscribedEvents(), mass);
    }
    // prims don't fly
@@ -516,11 +533,24 @@ public sealed class BSPrim : PhysicsActor
        set { _floatOnWater = value; } 
    }
    public override OMV.Vector3 RotationalVelocity { 
-        get { return _rotationalVelocity; } 
+        get {
-        set { _rotationalVelocity = value; 
+            /*
+            OMV.Vector3 pv = OMV.Vector3.Zero;
+            // if close to zero, report zero
+            // This is copied from ODE but I'm not sure why it returns zero but doesn't
+            //    zero the property in the physics engine.
+            if (_rotationalVelocity.ApproxEquals(pv, 0.2f))
+                return pv;
+             */
+            return _rotationalVelocity;
+        } 
+        set {
+            _rotationalVelocity = value;
            // m_log.DebugFormat("{0}: RotationalVelocity={1}", LogHeader, _rotationalVelocity);
            _scene.TaintedObject(delegate()
            {
+                DetailLog("{0},SetRotationalVel,taint,rotvel={1}", LocalID, _rotationalVelocity);
                BulletSimAPI.SetObjectAngularVelocity(_scene.WorldID, LocalID, _rotationalVelocity);
            });
        } 
@@ -533,11 +563,13 @@ public sealed class BSPrim : PhysicsActor
    }
    public override float Buoyancy { 
        get { return _buoyancy; } 
-        set { _buoyancy = value;
+        set {
-        _scene.TaintedObject(delegate()
+            _buoyancy = value;
-        {
+            _scene.TaintedObject(delegate()
-            BulletSimAPI.SetObjectBuoyancy(_scene.WorldID, _localID, _buoyancy);
+            {
-        });
+                DetailLog("{0},SetBuoyancy,taint,buoy={1}", LocalID, _buoyancy);
+                BulletSimAPI.SetObjectBuoyancy(_scene.WorldID, _localID, _buoyancy);
+            });
        } 
    }
@@ -573,27 +605,45 @@ public sealed class BSPrim : PhysicsActor
    public override float APIDStrength { set { return; } }
    public override float APIDDamping { set { return; } }
+    private List<OMV.Vector3> m_accumulatedForces = new List<OMV.Vector3>();
    public override void AddForce(OMV.Vector3 force, bool pushforce) {
        if (force.IsFinite())
        {
-            _force.X += force.X;
+            // _force += force;
-            _force.Y += force.Y;
+            lock (m_accumulatedForces)
-            _force.Z += force.Z;
+                m_accumulatedForces.Add(new OMV.Vector3(force));
        }
        else
        {
            m_log.WarnFormat("{0}: Got a NaN force applied to a Character", LogHeader);
+            return;
        }
        _scene.TaintedObject(delegate()
        {
-            BulletSimAPI.SetObjectForce(_scene.WorldID, _localID, _force);
+            lock (m_accumulatedForces)
+            {
+                if (m_accumulatedForces.Count > 0)
+                {
+                    OMV.Vector3 fSum = OMV.Vector3.Zero;
+                    foreach (OMV.Vector3 v in m_accumulatedForces)
+                    {
+                        fSum += v;
+                    }
+                    m_accumulatedForces.Clear();
+                    DetailLog("{0},SetObjectForce,taint,force={1}", LocalID, fSum);
+                    BulletSimAPI.SetObjectForce(_scene.WorldID, _localID, fSum);
+                }
+            }
        });
    }
    public override void AddAngularForce(OMV.Vector3 force, bool pushforce) { 
+        DetailLog("{0},AddAngularForce,call,angForce={1},push={2}", LocalID, force, pushforce);
        // m_log.DebugFormat("{0}: AddAngularForce. f={1}, push={2}", LogHeader, force, pushforce);
    }
    public override void SetMomentum(OMV.Vector3 momentum) { 
+        DetailLog("{0},SetMomentum,call,mom={1}", LocalID, momentum);
    }
    public override void SubscribeEvents(int ms) { 
        _subscribedEventsMs = ms;
@@ -885,6 +935,9 @@ public sealed class BSPrim : PhysicsActor
        returnMass = _density * volume;
+        /*
+         * This change means each object keeps its own mass and the Mass property
+         * will return the sum if we're part of a linkset.
        if (IsRootOfLinkset)
        {
            foreach (BSPrim prim in _childrenPrims)
@@ -892,6 +945,7 @@ public sealed class BSPrim : PhysicsActor
                returnMass += prim.CalculateMass();
            }
        }
+         */
        if (returnMass <= 0)
            returnMass = 0.0001f;
@@ -907,9 +961,11 @@ public sealed class BSPrim : PhysicsActor
    // The objects needs a hull if it's physical otherwise a mesh is enough
    // No locking here because this is done when we know physics is not simulating
    // if 'forceRebuild' is true, the geometry is rebuilt. Otherwise a previously built version is used
-    private void CreateGeom(bool forceRebuild)
+    // Returns 'true' if the geometry was rebuilt
+    private bool CreateGeom(bool forceRebuild)
    {
        // the mesher thought this was too simple to mesh. Use a native Bullet collision shape.
+        bool ret = false;
        if (!_scene.NeedsMeshing(_pbs))
        {
            if (_pbs.ProfileShape == ProfileShape.HalfCircle && _pbs.PathCurve == (byte)Extrusion.Curve1)
@@ -917,16 +973,28 @@ public sealed class BSPrim : PhysicsActor
                if (_size.X == _size.Y && _size.Y == _size.Z && _size.X == _size.Z)
                {
                    // m_log.DebugFormat("{0}: CreateGeom: Defaulting to sphere of size {1}", LogHeader, _size);
-                    _shapeType = ShapeData.PhysicsShapeType.SHAPE_SPHERE;
+                    if (forceRebuild || (_shapeType != ShapeData.PhysicsShapeType.SHAPE_SPHERE))
-                    // Bullet native objects are scaled by the Bullet engine so pass the size in
+                    {
-                    _scale = _size;
+                        DetailLog("{0},CreateGeom,sphere", LocalID);
+                        _shapeType = ShapeData.PhysicsShapeType.SHAPE_SPHERE;
+                        // Bullet native objects are scaled by the Bullet engine so pass the size in
+                        _scale = _size;
+                        // TODO: do we need to check for and destroy a mesh or hull that might have been left from before?
+                        ret = true;
+                    }
                }
            }
            else
            {
-                // m_log.DebugFormat("{0}: CreateGeom: Defaulting to box. lid={1}, size={2}", LogHeader, LocalID, _size);
+                // m_log.DebugFormat("{0}: CreateGeom: Defaulting to box. lid={1}, type={2}, size={3}", LogHeader, LocalID, _shapeType, _size);
-                _shapeType = ShapeData.PhysicsShapeType.SHAPE_BOX;
+                if (forceRebuild || (_shapeType != ShapeData.PhysicsShapeType.SHAPE_BOX))
-                _scale = _size;
+                {
+                    DetailLog("{0},CreateGeom,box", LocalID);
+                    _shapeType = ShapeData.PhysicsShapeType.SHAPE_BOX;
+                    _scale = _size;
+                    // TODO: do we need to check for and destroy a mesh or hull that might have been left from before?
+                    ret = true;
+                }
            }
        }
        else
@@ -938,6 +1006,7 @@ public sealed class BSPrim : PhysicsActor
                    // physical objects require a hull for interaction.
                    // This will create the mesh if it doesn't already exist
                    CreateGeomHull();
+                    ret = true;
                }
            }
            else
@@ -946,9 +1015,11 @@ public sealed class BSPrim : PhysicsActor
                {
                    // Static (non-physical) objects only need a mesh for bumping into
                    CreateGeomMesh();
+                    ret = true;
                }
            }
        }
+        return ret;
    }
    // No locking here because this is done when we know physics is not simulating
@@ -961,10 +1032,12 @@ public sealed class BSPrim : PhysicsActor
        // if this new shape is the same as last time, don't recreate the mesh
        if (_meshKey == newMeshKey) return;
+        DetailLog("{0},CreateGeomMesh,create,key={1}", LocalID, _meshKey);
        // Since we're recreating new, get rid of any previously generated shape
        if (_meshKey != 0)
        {
            // m_log.DebugFormat("{0}: CreateGeom: deleting old mesh. lID={1}, Key={2}", LogHeader, _localID, _meshKey);
+            DetailLog("{0},CreateGeomMesh,deleteOld,key={1}", LocalID, _meshKey);
            BulletSimAPI.DestroyMesh(_scene.WorldID, _meshKey);
            _mesh = null;
            _meshKey = 0;
@@ -981,7 +1054,6 @@ public sealed class BSPrim : PhysicsActor
        int vi = 0;
        foreach (OMV.Vector3 vv in vertices)
        {
-            // m_log.DebugFormat("{0}:  {1}: <{2:0.00}, {3:0.00}, {4:0.00}>", LogHeader, vi / 3, vv.X, vv.Y, vv.Z);
            verticesAsFloats[vi++] = vv.X;
            verticesAsFloats[vi++] = vv.Y;
            verticesAsFloats[vi++] = vv.Z;
@@ -995,6 +1067,7 @@ public sealed class BSPrim : PhysicsActor
        _shapeType = ShapeData.PhysicsShapeType.SHAPE_MESH;
        // meshes are already scaled by the meshmerizer
        _scale = new OMV.Vector3(1f, 1f, 1f);
+        DetailLog("{0},CreateGeomMesh,done", LocalID);
        return;
    }
@@ -1008,13 +1081,17 @@ public sealed class BSPrim : PhysicsActor
        // if the hull hasn't changed, don't rebuild it
        if (newHullKey == _hullKey) return;
+        DetailLog("{0},CreateGeomHull,create,key={1}", LocalID, _meshKey);
+        
        // Since we're recreating new, get rid of any previously generated shape
        if (_hullKey != 0)
        {
            // m_log.DebugFormat("{0}: CreateGeom: deleting old hull. Key={1}", LogHeader, _hullKey);
+            DetailLog("{0},CreateGeomHull,deleteOldHull,key={1}", LocalID, _meshKey);
            BulletSimAPI.DestroyHull(_scene.WorldID, _hullKey);
            _hullKey = 0;
            _hulls.Clear();
+            DetailLog("{0},CreateGeomHull,deleteOldMesh,key={1}", LocalID, _meshKey);
            BulletSimAPI.DestroyMesh(_scene.WorldID, _meshKey);
            _mesh = null;   // the mesh cannot match either
            _meshKey = 0;
@@ -1111,6 +1188,7 @@ public sealed class BSPrim : PhysicsActor
        _shapeType = ShapeData.PhysicsShapeType.SHAPE_HULL;
        // meshes are already scaled by the meshmerizer
        _scale = new OMV.Vector3(1f, 1f, 1f);
+        DetailLog("{0},CreateGeomHull,done", LocalID);
        return;
    }
@@ -1124,47 +1202,21 @@ public sealed class BSPrim : PhysicsActor
    // Create an object in Bullet if it has not already been created
    // No locking here because this is done when the physics engine is not simulating
-    private void CreateObject()
+    // Returns 'true' if an object was actually created.
+    private bool CreateObject()
    {
-        if (IsRootOfLinkset)
+        // this routine is called when objects are rebuilt. 
-        {
-            // Create a linkset around this object
-            // CreateLinksetWithCompoundHull();
-            CreateLinksetWithConstraints();
-        }
-        else
-        {
-            // simple object
-            // the mesh or hull must have already been created in Bullet
-            ShapeData shape;
-            FillShapeInfo(out shape);
-            // m_log.DebugFormat("{0}: CreateObject: lID={1}, shape={2}", LogHeader, _localID, shape.Type);
-            BulletSimAPI.CreateObject(_scene.WorldID, shape);
-        }
-    }
-    // Create a linkset by creating a compound hull at the root prim that consists of all
+        // the mesh or hull must have already been created in Bullet
-    // the children.
+        ShapeData shape;
-    // NOTE: This does not allow proper collisions with the children prims so it is not a workable solution
+        FillShapeInfo(out shape);
-    void CreateLinksetWithCompoundHull()
+        // m_log.DebugFormat("{0}: CreateObject: lID={1}, shape={2}", LogHeader, _localID, shape.Type);
-    {
+        bool ret = BulletSimAPI.CreateObject(_scene.WorldID, shape);
-        // If I am the root prim of a linkset, replace my physical shape with all the
-        // pieces of the children.
+        // the CreateObject() may have recreated the rigid body. Make sure we have the latest.
-        // All of the children should have called CreateGeom so they have a hull
+        m_body.Ptr = BulletSimAPI.GetBodyHandle2(_scene.World.Ptr, LocalID);
-        // in the physics engine already. Here we pull together all of those hulls
-        // into one shape.
+        return ret;
-        int totalPrimsInLinkset = _childrenPrims.Count + 1;
-        // m_log.DebugFormat("{0}: CreateLinkset. Root prim={1}, prims={2}", LogHeader, LocalID, totalPrimsInLinkset);
-        ShapeData[] shapes = new ShapeData[totalPrimsInLinkset];
-        FillShapeInfo(out shapes[0]);
-        int ii = 1;
-        foreach (BSPrim prim in _childrenPrims)
-        {
-            // m_log.DebugFormat("{0}: CreateLinkset: adding prim {1}", LogHeader, prim.LocalID);
-            prim.FillShapeInfo(out shapes[ii]);
-            ii++;
-        }
-        BulletSimAPI.CreateLinkset(_scene.WorldID, totalPrimsInLinkset, shapes);
    }
    // Copy prim's info into the BulletSim shape description structure
@@ -1186,44 +1238,6 @@ public sealed class BSPrim : PhysicsActor
        shape.Static = _isPhysical ? ShapeData.numericFalse : ShapeData.numericTrue;
    }
-    // Create the linkset by putting constraints between the objects of the set so they cannot move
-    // relative to each other.
-    // TODO: make this more effeicient: a large linkset gets rebuilt over and over and prims are added
-    void CreateLinksetWithConstraints()
-    {
-        // m_log.DebugFormat("{0}: CreateLinkset. Root prim={1}, prims={2}", LogHeader, LocalID, _childrenPrims.Count+1);
-        // remove any constraints that might be in place
-        foreach (BSPrim prim in _childrenPrims)
-        {
-            // m_log.DebugFormat("{0}: CreateLinkset: RemoveConstraint between root prim {1} and child prim {2}", LogHeader, LocalID, prim.LocalID);
-            BulletSimAPI.RemoveConstraint(_scene.WorldID, LocalID, prim.LocalID);
-        }
-        // create constraints between the root prim and each of the children
-        foreach (BSPrim prim in _childrenPrims)
-        {
-            // m_log.DebugFormat("{0}: CreateLinkset: AddConstraint between root prim {1} and child prim {2}", LogHeader, LocalID, prim.LocalID);
-            // Zero motion for children so they don't interpolate
-            prim.ZeroMotion();
-            // relative position normalized to the root prim
-            OMV.Vector3 childRelativePosition = (prim._position - this._position) * OMV.Quaternion.Inverse(this._orientation);
-            // relative rotation of the child to the parent
-            OMV.Quaternion relativeRotation = OMV.Quaternion.Inverse(prim._orientation) * this._orientation;
-            // this is a constraint that allows no freedom of movement between the two objects
-            // http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=4818
-            BulletSimAPI.AddConstraint(_scene.WorldID, LocalID, prim.LocalID, 
-                childRelativePosition,
-                relativeRotation,
-                OMV.Vector3.Zero,
-                OMV.Quaternion.Identity,
-                OMV.Vector3.Zero, OMV.Vector3.Zero,
-                OMV.Vector3.Zero, OMV.Vector3.Zero);
-        }
-    }
    // Rebuild the geometry and object.
    // This is called when the shape changes so we need to recreate the mesh/hull.
@@ -1231,8 +1245,8 @@ public sealed class BSPrim : PhysicsActor
    private void RecreateGeomAndObject()
    {
        // m_log.DebugFormat("{0}: RecreateGeomAndObject. lID={1}", LogHeader, _localID);
-        CreateGeom(true);
+        if (CreateGeom(true))
-        CreateObject();
+            CreateObject();
        return;
    }
@@ -1252,78 +1266,78 @@ public sealed class BSPrim : PhysicsActor
    const float POSITION_TOLERANCE = 0.05f;
    const float ACCELERATION_TOLERANCE = 0.01f;
    const float ROTATIONAL_VELOCITY_TOLERANCE = 0.01f;
-    const bool SHOULD_DAMP_UPDATES = false;
    public void UpdateProperties(EntityProperties entprop)
    {
+        /*
        UpdatedProperties changed = 0;
-        if (SHOULD_DAMP_UPDATES)
+        // assign to the local variables so the normal set action does not happen
+        // if (_position != entprop.Position)
+        if (!_position.ApproxEquals(entprop.Position, POSITION_TOLERANCE))
        {
-            // assign to the local variables so the normal set action does not happen
+            _position = entprop.Position;
-            // if (_position != entprop.Position)
+            changed |= UpdatedProperties.Position;
-            if (!_position.ApproxEquals(entprop.Position, POSITION_TOLERANCE))
-            {
-                _position = entprop.Position;
-                // m_log.DebugFormat("{0}: UpdateProperties: id={1}, pos = {2}", LogHeader, LocalID, _position);
-                changed |= UpdatedProperties.Position;
-            }
-            // if (_orientation != entprop.Rotation)
-            if (!_orientation.ApproxEquals(entprop.Rotation, ROTATION_TOLERANCE))
-            {
-                _orientation = entprop.Rotation;
-                // m_log.DebugFormat("{0}: UpdateProperties: id={1}, rot = {2}", LogHeader, LocalID, _orientation);
-                changed |= UpdatedProperties.Rotation;
-            }
-            // if (_velocity != entprop.Velocity)
-            if (!_velocity.ApproxEquals(entprop.Velocity, VELOCITY_TOLERANCE))
-            {
-                _velocity = entprop.Velocity;
-                // m_log.DebugFormat("{0}: UpdateProperties: velocity = {1}", LogHeader, _velocity);
-                changed |= UpdatedProperties.Velocity;
-            }
-            // if (_acceleration != entprop.Acceleration)
-            if (!_acceleration.ApproxEquals(entprop.Acceleration, ACCELERATION_TOLERANCE))
-            {
-                _acceleration = entprop.Acceleration;
-                // m_log.DebugFormat("{0}: UpdateProperties: acceleration = {1}", LogHeader, _acceleration);
-                changed |= UpdatedProperties.Acceleration;
-            }
-            // if (_rotationalVelocity != entprop.RotationalVelocity)
-            if (!_rotationalVelocity.ApproxEquals(entprop.RotationalVelocity, ROTATIONAL_VELOCITY_TOLERANCE))
-            {
-                _rotationalVelocity = entprop.RotationalVelocity;
-                // m_log.DebugFormat("{0}: UpdateProperties: rotationalVelocity = {1}", LogHeader, _rotationalVelocity);
-                changed |= UpdatedProperties.RotationalVel;
-            }
-            if (changed != 0)
-            {
-                // m_log.DebugFormat("{0}: UpdateProperties: id={1}, c={2}, pos={3}, rot={4}", LogHeader, LocalID, changed, _position, _orientation);
-                // Only update the position of single objects and linkset roots
-                if (this._parentPrim == null)
-                {
-                    // m_log.DebugFormat("{0}: RequestTerseUpdate. id={1}, ch={2}, pos={3}, rot={4}", LogHeader, LocalID, changed, _position, _orientation);
-                    base.RequestPhysicsterseUpdate();
-                }
-            }
        }
-        else
+        // if (_orientation != entprop.Rotation)
+        if (!_orientation.ApproxEquals(entprop.Rotation, ROTATION_TOLERANCE))
        {
-            // Don't check for damping here -- it's done in BulletSim and SceneObjectPart.
+            _orientation = entprop.Rotation;
+            changed |= UpdatedProperties.Rotation;
-            // Only updates only for individual prims and for the root object of a linkset.
+        }
+        // if (_velocity != entprop.Velocity)
+        if (!_velocity.ApproxEquals(entprop.Velocity, VELOCITY_TOLERANCE))
+        {
+            _velocity = entprop.Velocity;
+            changed |= UpdatedProperties.Velocity;
+        }
+        // if (_acceleration != entprop.Acceleration)
+        if (!_acceleration.ApproxEquals(entprop.Acceleration, ACCELERATION_TOLERANCE))
+        {
+            _acceleration = entprop.Acceleration;
+            changed |= UpdatedProperties.Acceleration;
+        }
+        // if (_rotationalVelocity != entprop.RotationalVelocity)
+        if (!_rotationalVelocity.ApproxEquals(entprop.RotationalVelocity, ROTATIONAL_VELOCITY_TOLERANCE))
+        {
+            _rotationalVelocity = entprop.RotationalVelocity;
+            changed |= UpdatedProperties.RotationalVel;
+        }
+        if (changed != 0)
+        {
+            // Only update the position of single objects and linkset roots
            if (this._parentPrim == null)
            {
-                // Assign to the local variables so the normal set action does not happen
-                _position = entprop.Position;
-                _orientation = entprop.Rotation;
-                _velocity = entprop.Velocity;
-                _acceleration = entprop.Acceleration;
-                _rotationalVelocity = entprop.RotationalVelocity;
-                // m_log.DebugFormat("{0}: RequestTerseUpdate. id={1}, ch={2}, pos={3}, rot={4}, vel={5}, acc={6}, rvel={7}", 
-                //         LogHeader, LocalID, changed, _position, _orientation, _velocity, _acceleration, _rotationalVelocity);
                base.RequestPhysicsterseUpdate();
            }
        }
+        */
+        // Don't check for damping here -- it's done in BulletSim and SceneObjectPart.
+        // Updates only for individual prims and for the root object of a linkset.
+        if (_linkset.IsRoot(this))
+        {
+            // Assign to the local variables so the normal set action does not happen
+            _position = entprop.Position;
+            _orientation = entprop.Rotation;
+            _velocity = entprop.Velocity;
+            _acceleration = entprop.Acceleration;
+            _rotationalVelocity = entprop.RotationalVelocity;
+            // m_log.DebugFormat("{0}: RequestTerseUpdate. id={1}, ch={2}, pos={3}, rot={4}, vel={5}, acc={6}, rvel={7}", 
+            //         LogHeader, LocalID, changed, _position, _orientation, _velocity, _acceleration, _rotationalVelocity);
+            DetailLog("{0},UpdateProperties,call,pos={1},orient={2},vel={3},accel={4},rotVel={5}",
+                    LocalID, _position, _orientation, _velocity, _acceleration, _rotationalVelocity);
+            base.RequestPhysicsterseUpdate();
+        }
+        else
+        {
+            // For debugging, we can also report the movement of children
+            DetailLog("{0},UpdateProperties,child,pos={1},orient={2},vel={3},accel={4},rotVel={5}",
+                    LocalID, entprop.Position, entprop.Rotation, entprop.Velocity, 
+                    entprop.Acceleration, entprop.RotationalVelocity);
+        }
    }
    // I've collided with something
@@ -1362,5 +1376,11 @@ public sealed class BSPrim : PhysicsActor
            collisionCollection.Clear();
        }
    }
+    // Invoke the detailed logger and output something if it's enabled.
+    private void DetailLog(string msg, params Object[] args)
+    {
+        Scene.PhysicsLogging.Write(msg, args);
+    }
 }
 }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
index 417cb5f..28d5cb5 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
@@ -29,12 +29,14 @@ using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Text;
 using System.Threading;
-using Nini.Config;
-using log4net;
 using OpenSim.Framework;
+using OpenSim.Region.Framework;
+using OpenSim.Region.CoreModules;
+using Logging = OpenSim.Region.CoreModules.Framework.Statistics.Logging;
 using OpenSim.Region.Physics.Manager;
+using Nini.Config;
+using log4net;
 using OpenMetaverse;
-using OpenSim.Region.Framework;
 // TODOs for BulletSim (for BSScene, BSPrim, BSCharacter and BulletSim)
 // Debug linkset 
@@ -44,15 +46,17 @@ using OpenSim.Region.Framework;
 // Compute physics FPS reasonably
 // Based on material, set density and friction
 // More efficient memory usage when passing hull information from BSPrim to BulletSim
+// Move all logic out of the C++ code and into the C# code for easier future modifications.
 // Four states of prim: Physical, regular, phantom and selected. Are we modeling these correctly?
 //     In SL one can set both physical and phantom (gravity, does not effect others, makes collisions with ground)
 //     At the moment, physical and phantom causes object to drop through the terrain
 // Physical phantom objects and related typing (collision options )
+// Use collision masks for collision with terrain and phantom objects 
 // Check out llVolumeDetect. Must do something for that.
 // Should prim.link() and prim.delink() membership checking happen at taint time?
+// changing the position and orientation of a linked prim must rebuild the constraint with the root.
 // Mesh sharing. Use meshHash to tell if we already have a hull of that shape and only create once
 // Do attachments need to be handled separately? Need collision events. Do not collide with VolumeDetect
-// Use collision masks for collision with terrain and phantom objects 
 // Implement the genCollisions feature in BulletSim::SetObjectProperties (don't pass up unneeded collisions)
 // Implement LockAngularMotion
 // Decide if clearing forces is the right thing to do when setting position (BulletSim::SetObjectTranslation)
@@ -60,9 +64,6 @@ using OpenSim.Region.Framework;
 // Remove mesh and Hull stuff. Use mesh passed to bullet and use convexdecom from bullet.
 // Add PID movement operations. What does ScenePresence.MoveToTarget do?
 // Check terrain size. 128 or 127?
-// Multiple contact points on collision?
-//    See code in ode::near... calls to collision_accounting_events()
-//    (This might not be a problem. ODE collects all the collisions with one object in one tick.)
 // Raycast
 // 
 namespace OpenSim.Region.Physics.BulletSPlugin
@@ -72,6 +73,8 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    private static readonly ILog m_log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
    private static readonly string LogHeader = "[BULLETS SCENE]";
+    public void DebugLog(string mm, params Object[] xx) { if (shouldDebugLog) m_log.DebugFormat(mm, xx); }
    public string BulletSimVersion = "?";
    private Dictionary<uint, BSCharacter> m_avatars = new Dictionary<uint, BSCharacter>();
@@ -84,6 +87,9 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    private uint m_worldID;
    public uint WorldID { get { return m_worldID; } }
+    // let my minuions use my logger
+    public ILog Logger { get { return m_log; } }
    private bool m_initialized = false;
    private int m_detailedStatsStep = 0;
@@ -100,11 +106,24 @@ public class BSScene : PhysicsScene, IPhysicsParameters
        get { return m_sculptLOD; }
    }
+    private BulletSim m_worldSim;
+    public BulletSim World
+    {
+        get { return m_worldSim; }
+    }
+    private BSConstraintCollection m_constraintCollection;
+    public BSConstraintCollection Constraints
+    { 
+        get { return m_constraintCollection; }
+    }
    private int m_maxSubSteps;
    private float m_fixedTimeStep;
    private long m_simulationStep = 0;
    public long SimulationStep { get { return m_simulationStep; } }
+    public float LastSimulatedTimestep { get; private set; }
    // A value of the time now so all the collision and update routines do not have to get their own
    // Set to 'now' just before all the prims and actors are called for collisions and updates
    private int m_simulationNowTime;
@@ -121,6 +140,9 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    private bool _meshSculptedPrim = true;         // cause scuplted prims to get meshed
    private bool _forceSimplePrimMeshing = false;   // if a cube or sphere, let Bullet do internal shapes
+    public float PID_D { get; private set; }    // derivative
+    public float PID_P { get; private set; }    // proportional
    public const uint TERRAIN_ID = 0;       // OpenSim senses terrain with a localID of zero
    public const uint GROUNDPLANE_ID = 1;
@@ -147,8 +169,20 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    ConfigurationParameters[] m_params;
    GCHandle m_paramsHandle;
+    public bool shouldDebugLog { get; private set; }
    private BulletSimAPI.DebugLogCallback m_DebugLogCallbackHandle;
+    // Sometimes you just have to log everything.
+    public Logging.LogWriter PhysicsLogging;
+    private bool m_physicsLoggingEnabled;
+    private string m_physicsLoggingDir;
+    private string m_physicsLoggingPrefix;
+    private int m_physicsLoggingFileMinutes;
+    private bool m_vehicleLoggingEnabled;
+    public bool VehicleLoggingEnabled { get { return m_vehicleLoggingEnabled; } }
    public BSScene(string identifier)
    {
        m_initialized = false;
@@ -169,17 +203,32 @@ public class BSScene : PhysicsScene, IPhysicsParameters
        m_updateArray = new EntityProperties[m_maxUpdatesPerFrame];
        m_updateArrayPinnedHandle = GCHandle.Alloc(m_updateArray, GCHandleType.Pinned);
+        // Enable very detailed logging.
+        // By creating an empty logger when not logging, the log message invocation code
+        // can be left in and every call doesn't have to check for null.
+        if (m_physicsLoggingEnabled)
+        {
+            PhysicsLogging = new Logging.LogWriter(m_physicsLoggingDir, m_physicsLoggingPrefix, m_physicsLoggingFileMinutes);
+        }
+        else
+        {
+            PhysicsLogging = new Logging.LogWriter();
+        }
        // Get the version of the DLL
        // TODO: this doesn't work yet. Something wrong with marshaling the returned string.
        // BulletSimVersion = BulletSimAPI.GetVersion();
        // m_log.WarnFormat("{0}: BulletSim.dll version='{1}'", LogHeader, BulletSimVersion);
        // if Debug, enable logging from the unmanaged code
-        if (m_log.IsDebugEnabled)
+        if (m_log.IsDebugEnabled || PhysicsLogging.Enabled)
        {
            m_log.DebugFormat("{0}: Initialize: Setting debug callback for unmanaged code", LogHeader);
-            // the handle is saved to it doesn't get freed after this call
+            if (PhysicsLogging.Enabled)
-            m_DebugLogCallbackHandle = new BulletSimAPI.DebugLogCallback(BulletLogger);
+                m_DebugLogCallbackHandle = new BulletSimAPI.DebugLogCallback(BulletLoggerPhysLog);
+            else
+                m_DebugLogCallbackHandle = new BulletSimAPI.DebugLogCallback(BulletLogger);
+            // the handle is saved in a variable to make sure it doesn't get freed after this call
            BulletSimAPI.SetDebugLogCallback(m_DebugLogCallbackHandle);
        }
@@ -194,6 +243,11 @@ public class BSScene : PhysicsScene, IPhysicsParameters
                                        m_maxCollisionsPerFrame, m_collisionArrayPinnedHandle.AddrOfPinnedObject(),
                                        m_maxUpdatesPerFrame, m_updateArrayPinnedHandle.AddrOfPinnedObject());
+        // Initialization to support the transition to a new API which puts most of the logic
+        //   into the C# code so it is easier to modify and add to.
+        m_worldSim = new BulletSim(m_worldID, BulletSimAPI.GetSimHandle2(m_worldID));
+        m_constraintCollection = new BSConstraintCollection(World);
        m_initialized = true;
    }
@@ -202,110 +256,27 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    private void GetInitialParameterValues(IConfigSource config)
    {
        ConfigurationParameters parms = new ConfigurationParameters();
+        m_params[0] = parms;
-        _meshSculptedPrim = true;           // mesh sculpted prims
+        SetParameterDefaultValues();
-        _forceSimplePrimMeshing = false;    // use complex meshing if called for
-        m_meshLOD = 8f;
-        m_sculptLOD = 32f;
-        m_detailedStatsStep = 0;            // disabled
-        m_maxSubSteps = 10;
-        m_fixedTimeStep = 1f / 60f;
-        m_maxCollisionsPerFrame = 2048;
-        m_maxUpdatesPerFrame = 2048;
-        m_maximumObjectMass = 10000.01f;
-        parms.defaultFriction = 0.5f;
-        parms.defaultDensity = 10.000006836f; // Aluminum g/cm3
-        parms.defaultRestitution = 0f;
-        parms.collisionMargin = 0.0f;
-        parms.gravity = -9.80665f;
-        parms.linearDamping = 0.0f;
-        parms.angularDamping = 0.0f;
-        parms.deactivationTime = 0.2f;
-        parms.linearSleepingThreshold = 0.8f;
-        parms.angularSleepingThreshold = 1.0f;
-        parms.ccdMotionThreshold = 0.0f;    // set to zero to disable
-        parms.ccdSweptSphereRadius = 0.0f;
-        parms.contactProcessingThreshold = 0.1f;
-        parms.terrainFriction = 0.5f;
-        parms.terrainHitFraction = 0.8f;
-        parms.terrainRestitution = 0f;
-        parms.avatarFriction = 0.5f;
-        parms.avatarRestitution = 0.0f;
-        parms.avatarDensity = 60f;
-        parms.avatarCapsuleRadius = 0.37f;
-        parms.avatarCapsuleHeight = 1.5f; // 2.140599f
-        parms.avatarContactProcessingThreshold = 0.1f;
-        parms.maxPersistantManifoldPoolSize = 0f;
-        parms.shouldDisableContactPoolDynamicAllocation = ConfigurationParameters.numericTrue;
-        parms.shouldForceUpdateAllAabbs = ConfigurationParameters.numericFalse;
-        parms.shouldRandomizeSolverOrder = ConfigurationParameters.numericFalse;
-        parms.shouldSplitSimulationIslands = ConfigurationParameters.numericFalse;
-        parms.shouldEnableFrictionCaching = ConfigurationParameters.numericFalse;
-        parms.numberOfSolverIterations = 0f;    // means use default
        if (config != null)
        {
            // If there are specifications in the ini file, use those values
-            // WHEN ADDING OR UPDATING THIS SECTION, BE SURE TO UPDATE OpenSimDefaults.ini
-            // ALSO REMEMBER TO UPDATE THE RUNTIME SETTING OF THE PARAMETERS.
            IConfig pConfig = config.Configs["BulletSim"];
            if (pConfig != null)
            {
-                _meshSculptedPrim = pConfig.GetBoolean("MeshSculptedPrim", _meshSculptedPrim);
+                SetParameterConfigurationValues(pConfig);
-                _forceSimplePrimMeshing = pConfig.GetBoolean("ForceSimplePrimMeshing", _forceSimplePrimMeshing);
+                // Very detailed logging for physics debugging
-                m_detailedStatsStep = pConfig.GetInt("DetailedStatsStep", m_detailedStatsStep);
+                m_physicsLoggingEnabled = pConfig.GetBoolean("PhysicsLoggingEnabled", false);
-                m_meshLOD = pConfig.GetFloat("MeshLevelOfDetail", m_meshLOD);
+                m_physicsLoggingDir = pConfig.GetString("PhysicsLoggingDir", ".");
-                m_sculptLOD = pConfig.GetFloat("SculptLevelOfDetail", m_sculptLOD);
+                m_physicsLoggingPrefix = pConfig.GetString("PhysicsLoggingPrefix", "physics-");
+                m_physicsLoggingFileMinutes = pConfig.GetInt("PhysicsLoggingFileMinutes", 5);
-                m_maxSubSteps = pConfig.GetInt("MaxSubSteps", m_maxSubSteps);
+                // Very detailed logging for vehicle debugging
-                m_fixedTimeStep = pConfig.GetFloat("FixedTimeStep", m_fixedTimeStep);
+                m_vehicleLoggingEnabled = pConfig.GetBoolean("VehicleLoggingEnabled", false);
-                m_maxCollisionsPerFrame = pConfig.GetInt("MaxCollisionsPerFrame", m_maxCollisionsPerFrame);
-                m_maxUpdatesPerFrame = pConfig.GetInt("MaxUpdatesPerFrame", m_maxUpdatesPerFrame);
-                m_maximumObjectMass = pConfig.GetFloat("MaxObjectMass", m_maximumObjectMass);
-                parms.defaultFriction = pConfig.GetFloat("DefaultFriction", parms.defaultFriction);
-                parms.defaultDensity = pConfig.GetFloat("DefaultDensity", parms.defaultDensity);
-                parms.defaultRestitution = pConfig.GetFloat("DefaultRestitution", parms.defaultRestitution);
-                parms.collisionMargin = pConfig.GetFloat("CollisionMargin", parms.collisionMargin);
-                parms.gravity = pConfig.GetFloat("Gravity", parms.gravity);
-                parms.linearDamping = pConfig.GetFloat("LinearDamping", parms.linearDamping);
-                parms.angularDamping = pConfig.GetFloat("AngularDamping", parms.angularDamping);
-                parms.deactivationTime = pConfig.GetFloat("DeactivationTime", parms.deactivationTime);
-                parms.linearSleepingThreshold = pConfig.GetFloat("LinearSleepingThreshold", parms.linearSleepingThreshold);
-                parms.angularSleepingThreshold = pConfig.GetFloat("AngularSleepingThreshold", parms.angularSleepingThreshold);
-                parms.ccdMotionThreshold = pConfig.GetFloat("CcdMotionThreshold", parms.ccdMotionThreshold);
-                parms.ccdSweptSphereRadius = pConfig.GetFloat("CcdSweptSphereRadius", parms.ccdSweptSphereRadius);
-                parms.contactProcessingThreshold = pConfig.GetFloat("ContactProcessingThreshold", parms.contactProcessingThreshold);
-                parms.terrainFriction = pConfig.GetFloat("TerrainFriction", parms.terrainFriction);
-                parms.terrainHitFraction = pConfig.GetFloat("TerrainHitFraction", parms.terrainHitFraction);
-                parms.terrainRestitution = pConfig.GetFloat("TerrainRestitution", parms.terrainRestitution);
-                parms.avatarFriction = pConfig.GetFloat("AvatarFriction", parms.avatarFriction);
-                parms.avatarRestitution = pConfig.GetFloat("AvatarRestitution", parms.avatarRestitution);
-                parms.avatarDensity = pConfig.GetFloat("AvatarDensity", parms.avatarDensity);
-                parms.avatarCapsuleRadius = pConfig.GetFloat("AvatarCapsuleRadius", parms.avatarCapsuleRadius);
-                parms.avatarCapsuleHeight = pConfig.GetFloat("AvatarCapsuleHeight", parms.avatarCapsuleHeight);
-                parms.avatarContactProcessingThreshold = pConfig.GetFloat("AvatarContactProcessingThreshold", parms.avatarContactProcessingThreshold);
-                parms.maxPersistantManifoldPoolSize = pConfig.GetFloat("MaxPersistantManifoldPoolSize", parms.maxPersistantManifoldPoolSize);
-                parms.shouldDisableContactPoolDynamicAllocation = ParamBoolean(pConfig, "ShouldDisableContactPoolDynamicAllocation", parms.shouldDisableContactPoolDynamicAllocation);
-                    parms.shouldForceUpdateAllAabbs = ParamBoolean(pConfig, "ShouldForceUpdateAllAabbs", parms.shouldForceUpdateAllAabbs);
-                    parms.shouldRandomizeSolverOrder = ParamBoolean(pConfig, "ShouldRandomizeSolverOrder", parms.shouldRandomizeSolverOrder);
-                    parms.shouldSplitSimulationIslands = ParamBoolean(pConfig, "ShouldSplitSimulationIslands", parms.shouldSplitSimulationIslands);
-                    parms.shouldEnableFrictionCaching = ParamBoolean(pConfig, "ShouldEnableFrictionCaching", parms.shouldEnableFrictionCaching);
-                    parms.numberOfSolverIterations = pConfig.GetFloat("NumberOfSolverIterations", parms.numberOfSolverIterations);
            }
        }
-        m_params[0] = parms;
    }
    // A helper function that handles a true/false parameter and returns the proper float number encoding
@@ -323,12 +294,17 @@ public class BSScene : PhysicsScene, IPhysicsParameters
        return ret;
    }
    // Called directly from unmanaged code so don't do much
    private void BulletLogger(string msg)
    {
        m_log.Debug("[BULLETS UNMANAGED]:" + msg);
    }
+    
+    // Called directly from unmanaged code so don't do much
+    private void BulletLoggerPhysLog(string msg)
+    {
+        PhysicsLogging.Write("[BULLETS UNMANAGED]:" + msg);
+    }
    public override PhysicsActor AddAvatar(string avName, Vector3 position, Vector3 size, bool isFlying)
    {
@@ -339,6 +315,9 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    public override PhysicsActor AddAvatar(uint localID, string avName, Vector3 position, Vector3 size, bool isFlying)
    {
        // m_log.DebugFormat("{0}: AddAvatar: {1}", LogHeader, avName);
+        if (!m_initialized) return null;
        BSCharacter actor = new BSCharacter(localID, avName, this, position, size, isFlying);
        lock (m_avatars) m_avatars.Add(localID, actor);
        return actor;
@@ -347,34 +326,47 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    public override void RemoveAvatar(PhysicsActor actor)
    {
        // m_log.DebugFormat("{0}: RemoveAvatar", LogHeader);
-        if (actor is BSCharacter)
-        {
+        if (!m_initialized) return;
-            ((BSCharacter)actor).Destroy();
-        }
+        BSCharacter bsactor = actor as BSCharacter;
-        try
+        if (bsactor != null)
-        {
-            lock (m_avatars) m_avatars.Remove(actor.LocalID);
-        }
-        catch (Exception e)
        {
-            m_log.WarnFormat("{0}: Attempt to remove avatar that is not in physics scene: {1}", LogHeader, e);
+            try
+            {
+                lock (m_avatars) m_avatars.Remove(actor.LocalID);
+            }
+            catch (Exception e)
+            {
+                m_log.WarnFormat("{0}: Attempt to remove avatar that is not in physics scene: {1}", LogHeader, e);
+            }
+            bsactor.Destroy();
+            // bsactor.dispose();
        }
    }
    public override void RemovePrim(PhysicsActor prim)
    {
-        // m_log.DebugFormat("{0}: RemovePrim", LogHeader);
+        if (!m_initialized) return;
-        if (prim is BSPrim)
-        {
+        BSPrim bsprim = prim as BSPrim;
-            ((BSPrim)prim).Destroy();
+        if (bsprim != null)
-        }
-        try
        {
-            lock (m_prims) m_prims.Remove(prim.LocalID);
+            m_log.DebugFormat("{0}: RemovePrim. id={1}/{2}", LogHeader, bsprim.Name, bsprim.LocalID);
+            try
+            {
+                lock (m_prims) m_prims.Remove(bsprim.LocalID);
+            }
+            catch (Exception e)
+            {
+                m_log.ErrorFormat("{0}: Attempt to remove prim that is not in physics scene: {1}", LogHeader, e);
+            }
+            bsprim.Destroy();
+            // bsprim.dispose();
        }
-        catch (Exception e)
+        else
        {
-            m_log.WarnFormat("{0}: Attempt to remove prim that is not in physics scene: {1}", LogHeader, e);
+            m_log.ErrorFormat("{0}: Attempt to remove prim that is not a BSPrim type.", LogHeader);
        }
    }
@@ -382,6 +374,9 @@ public class BSScene : PhysicsScene, IPhysicsParameters
                                              Vector3 size, Quaternion rotation, bool isPhysical, uint localID)
    {
        // m_log.DebugFormat("{0}: AddPrimShape2: {1}", LogHeader, primName);
+        if (!m_initialized) return null;
        BSPrim prim = new BSPrim(localID, primName, this, position, size, rotation, pbs, isPhysical);
        lock (m_prims) m_prims.Add(localID, prim);
        return prim;
@@ -400,6 +395,8 @@ public class BSScene : PhysicsScene, IPhysicsParameters
        int collidersCount;
        IntPtr collidersPtr;
+        LastSimulatedTimestep = timeStep;
        // prevent simulation until we've been initialized
        if (!m_initialized) return 10.0f;
@@ -459,7 +456,6 @@ public class BSScene : PhysicsScene, IPhysicsParameters
            for (int ii = 0; ii < updatedEntityCount; ii++)
            {
                EntityProperties entprop = m_updateArray[ii];
-                // m_log.DebugFormat("{0}: entprop[{1}]: id={2}, pos={3}", LogHeader, ii, entprop.ID, entprop.Position);
                BSPrim prim;
                if (m_prims.TryGetValue(entprop.ID, out prim))
                {
@@ -532,8 +528,17 @@ public class BSScene : PhysicsScene, IPhysicsParameters
        });
    }
+    // Someday we will have complex terrain with caves and tunnels
+    // For the moment, it's flat and convex
+    public float GetTerrainHeightAtXYZ(Vector3 loc)
+    {
+        return GetTerrainHeightAtXY(loc.X, loc.Y);
+    }
    public float GetTerrainHeightAtXY(float tX, float tY)
    {
+        if (tX < 0 || tX >= Constants.RegionSize || tY < 0 || tY >= Constants.RegionSize)
+            return 30;
        return m_heightMap[((int)tX) * Constants.RegionSize + ((int)tY)];
    }
@@ -555,6 +560,33 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    public override void Dispose()
    {
        // m_log.DebugFormat("{0}: Dispose()", LogHeader);
+        // make sure no stepping happens while we're deleting stuff
+        m_initialized = false;
+        if (m_constraintCollection != null)
+        {
+            m_constraintCollection.Dispose();
+            m_constraintCollection = null;
+        }
+        foreach (KeyValuePair<uint, BSCharacter> kvp in m_avatars)
+        {
+            kvp.Value.Destroy();
+        }
+        m_avatars.Clear();
+        foreach (KeyValuePair<uint, BSPrim> kvp in m_prims)
+        {
+            kvp.Value.Destroy();
+        }
+        m_prims.Clear();
+        // Anything left in the unmanaged code should be cleaned out
+        BulletSimAPI.Shutdown(WorldID);
+        // Not logging any more
+        PhysicsLogging.Close();
    }
    public override Dictionary<uint, float> GetTopColliders()
@@ -680,10 +712,12 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    }
    // The calls to the PhysicsActors can't directly call into the physics engine
-    // because it might be busy. We we delay changes to a known time.
+    // because it might be busy. We delay changes to a known time.
    // We rely on C#'s closure to save and restore the context for the delegate.
    public void TaintedObject(TaintCallback callback)
    {
+        if (!m_initialized) return;
        lock (_taintLock)
            _taintedObjects.Add(callback);
        return;
@@ -757,61 +791,392 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    }
    #endregion Vehicles
-    #region Runtime settable parameters
+    #region Parameters
-    public static PhysParameterEntry[] SettableParameters = new PhysParameterEntry[]
-    {
+    delegate void ParamUser(BSScene scene, IConfig conf, string paramName, float val);
-        new PhysParameterEntry("MeshLOD", "Level of detail to render meshes (32, 16, 8 or 4. 32=most detailed)"),
+    delegate float ParamGet(BSScene scene);
-        new PhysParameterEntry("SculptLOD", "Level of detail to render sculpties (32, 16, 8 or 4. 32=most detailed)"),
+    delegate void ParamSet(BSScene scene, string paramName, uint localID, float val);
-        new PhysParameterEntry("MaxSubStep", "In simulation step, maximum number of substeps"),
-        new PhysParameterEntry("FixedTimeStep", "In simulation step, seconds of one substep (1/60)"),
+    private struct ParameterDefn
-        new PhysParameterEntry("MaxObjectMass", "Maximum object mass (10000.01)"),
+    {
-        new PhysParameterEntry("DetailedStats", "Frames between outputting detailed phys stats. Zero is off"),
+        public string name;
+        public string desc;
-        new PhysParameterEntry("DefaultFriction", "Friction factor used on new objects"),
+        public float defaultValue;
-        new PhysParameterEntry("DefaultDensity", "Density for new objects" ),
+        public ParamUser userParam;
-        new PhysParameterEntry("DefaultRestitution", "Bouncyness of an object" ),
+        public ParamGet getter;
-        // new PhysParameterEntry("CollisionMargin", "Margin around objects before collisions are calculated (must be zero!!)" ),
+        public ParamSet setter;
-        new PhysParameterEntry("Gravity", "Vertical force of gravity (negative means down)" ),
+        public ParameterDefn(string n, string d, float v, ParamUser u, ParamGet g, ParamSet s)
+        {
-        new PhysParameterEntry("LinearDamping", "Factor to damp linear movement per second (0.0 - 1.0)" ),
+            name = n;
-        new PhysParameterEntry("AngularDamping", "Factor to damp angular movement per second (0.0 - 1.0)" ),
+            desc = d;
-        new PhysParameterEntry("DeactivationTime", "Seconds before considering an object potentially static" ),
+            defaultValue = v;
-        new PhysParameterEntry("LinearSleepingThreshold", "Seconds to measure linear movement before considering static" ),
+            userParam = u;
-        new PhysParameterEntry("AngularSleepingThreshold", "Seconds to measure angular movement before considering static" ),
+            getter = g;
-        new PhysParameterEntry("CcdMotionThreshold", "Continuious collision detection threshold (0 means no CCD)" ),
+            setter = s;
-        new PhysParameterEntry("CcdSweptSphereRadius", "Continuious collision detection test radius" ),
+        }
-        new PhysParameterEntry("ContactProcessingThreshold", "Distance between contacts before doing collision check" ),
+    }
-        // Can only change the following at initialization time. Change the INI file and reboot.
-            new PhysParameterEntry("MaxPersistantManifoldPoolSize", "Number of manifolds pooled (0 means default)"),
+    // List of all of the externally visible parameters.
-            new PhysParameterEntry("ShouldDisableContactPoolDynamicAllocation", "Enable to allow large changes in object count"),
+    // For each parameter, this table maps a text name to getter and setters.
-            new PhysParameterEntry("ShouldForceUpdateAllAabbs", "Enable to recomputer AABBs every simulator step"),
+    // To add a new externally referencable/settable parameter, add the paramter storage
-            new PhysParameterEntry("ShouldRandomizeSolverOrder", "Enable for slightly better stacking interaction"),
+    //    location somewhere in the program and make an entry in this table with the
-            new PhysParameterEntry("ShouldSplitSimulationIslands", "Enable splitting active object scanning islands"),
+    //    getters and setters.
-            new PhysParameterEntry("ShouldEnableFrictionCaching", "Enable friction computation caching"),
+    // To add a new variable, it is easiest to find an existing definition and copy it.
-            new PhysParameterEntry("NumberOfSolverIterations", "Number of internal iterations (0 means default)"),
+    // Parameter values are floats. Booleans are converted to a floating value.
+    // 
-        new PhysParameterEntry("Friction", "Set friction parameter for a specific object" ),
+    // A ParameterDefn() takes the following parameters:
-        new PhysParameterEntry("Restitution", "Set restitution parameter for a specific object" ),
+    //    -- the text name of the parameter. This is used for console input and ini file.
+    //    -- a short text description of the parameter. This shows up in the console listing.
-        new PhysParameterEntry("Friction", "Set friction parameter for a specific object" ),
+    //    -- a delegate for fetching the parameter from the ini file.
-        new PhysParameterEntry("Restitution", "Set restitution parameter for a specific object" ),
+    //          Should handle fetching the right type from the ini file and converting it.
+    //    -- a delegate for getting the value as a float
-        new PhysParameterEntry("TerrainFriction", "Factor to reduce movement against terrain surface" ),
+    //    -- a delegate for setting the value from a float
-        new PhysParameterEntry("TerrainHitFraction", "Distance to measure hit collisions" ),
+    //
-        new PhysParameterEntry("TerrainRestitution", "Bouncyness" ),
+    // The single letter parameters for the delegates are:
-        new PhysParameterEntry("AvatarFriction", "Factor to reduce movement against an avatar. Changed on avatar recreation." ),
+    //    s = BSScene
-        new PhysParameterEntry("AvatarDensity", "Density of an avatar. Changed on avatar recreation." ),
+    //    p = string parameter name
-        new PhysParameterEntry("AvatarRestitution", "Bouncyness. Changed on avatar recreation." ),
+    //    l = localID of referenced object
-        new PhysParameterEntry("AvatarCapsuleRadius", "Radius of space around an avatar" ),
+    //    v = float value
-        new PhysParameterEntry("AvatarCapsuleHeight", "Default height of space around avatar" ),
+    //    cf = parameter configuration class (for fetching values from ini file)
-            new PhysParameterEntry("AvatarContactProcessingThreshold", "Distance from capsule to check for collisions")
+    private ParameterDefn[] ParameterDefinitions =
+    {
+        new ParameterDefn("MeshSculptedPrim", "Whether to create meshes for sculpties",
+            ConfigurationParameters.numericTrue,
+            (s,cf,p,v) => { s._meshSculptedPrim = cf.GetBoolean(p, s.BoolNumeric(v)); },
+            (s) => { return s.NumericBool(s._meshSculptedPrim); },
+            (s,p,l,v) => { s._meshSculptedPrim = s.BoolNumeric(v); } ),
+        new ParameterDefn("ForceSimplePrimMeshing", "If true, only use primitive meshes for objects",
+            ConfigurationParameters.numericFalse,
+            (s,cf,p,v) => { s._forceSimplePrimMeshing = cf.GetBoolean(p, s.BoolNumeric(v)); },
+            (s) => { return s.NumericBool(s._forceSimplePrimMeshing); },
+            (s,p,l,v) => { s._forceSimplePrimMeshing = s.BoolNumeric(v); } ),
+        new ParameterDefn("MeshLOD", "Level of detail to render meshes (32, 16, 8 or 4. 32=most detailed)",
+            8f,
+            (s,cf,p,v) => { s.m_meshLOD = cf.GetInt(p, (int)v); },
+            (s) => { return (float)s.m_meshLOD; },
+            (s,p,l,v) => { s.m_meshLOD = (int)v; } ),
+        new ParameterDefn("SculptLOD", "Level of detail to render sculpties (32, 16, 8 or 4. 32=most detailed)",
+            32,
+            (s,cf,p,v) => { s.m_sculptLOD = cf.GetInt(p, (int)v); },
+            (s) => { return (float)s.m_sculptLOD; },
+            (s,p,l,v) => { s.m_sculptLOD = (int)v; } ),
+        new ParameterDefn("MaxSubStep", "In simulation step, maximum number of substeps",
+            10f,
+            (s,cf,p,v) => { s.m_maxSubSteps = cf.GetInt(p, (int)v); },
+            (s) => { return (float)s.m_maxSubSteps; },
+            (s,p,l,v) => { s.m_maxSubSteps = (int)v; } ),
+        new ParameterDefn("FixedTimeStep", "In simulation step, seconds of one substep (1/60)",
+            1f / 60f,
+            (s,cf,p,v) => { s.m_fixedTimeStep = cf.GetFloat(p, v); },
+            (s) => { return (float)s.m_fixedTimeStep; },
+            (s,p,l,v) => { s.m_fixedTimeStep = v; } ),
+        new ParameterDefn("MaxCollisionsPerFrame", "Max collisions returned at end of each frame",
+            2048f,
+            (s,cf,p,v) => { s.m_maxCollisionsPerFrame = cf.GetInt(p, (int)v); },
+            (s) => { return (float)s.m_maxCollisionsPerFrame; },
+            (s,p,l,v) => { s.m_maxCollisionsPerFrame = (int)v; } ),
+        new ParameterDefn("MaxUpdatesPerFrame", "Max updates returned at end of each frame",
+            8000f,
+            (s,cf,p,v) => { s.m_maxUpdatesPerFrame = cf.GetInt(p, (int)v); },
+            (s) => { return (float)s.m_maxUpdatesPerFrame; },
+            (s,p,l,v) => { s.m_maxUpdatesPerFrame = (int)v; } ),
+        new ParameterDefn("MaxObjectMass", "Maximum object mass (10000.01)",
+            10000.01f,
+            (s,cf,p,v) => { s.m_maximumObjectMass = cf.GetFloat(p, v); },
+            (s) => { return (float)s.m_maximumObjectMass; },
+            (s,p,l,v) => { s.m_maximumObjectMass = v; } ),
+        new ParameterDefn("PID_D", "Derivitive factor for motion smoothing",
+            2200f,
+            (s,cf,p,v) => { s.PID_D = cf.GetFloat(p, v); },
+            (s) => { return (float)s.PID_D; },
+            (s,p,l,v) => { s.PID_D = v; } ),
+        new ParameterDefn("PID_P", "Parameteric factor for motion smoothing",
+            900f,
+            (s,cf,p,v) => { s.PID_P = cf.GetFloat(p, v); },
+            (s) => { return (float)s.PID_P; },
+            (s,p,l,v) => { s.PID_P = v; } ),
+        new ParameterDefn("DefaultFriction", "Friction factor used on new objects",
+            0.5f,
+            (s,cf,p,v) => { s.m_params[0].defaultFriction = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].defaultFriction; },
+            (s,p,l,v) => { s.m_params[0].defaultFriction = v; } ),
+        new ParameterDefn("DefaultDensity", "Density for new objects" ,
+            10.000006836f,  // Aluminum g/cm3
+            (s,cf,p,v) => { s.m_params[0].defaultDensity = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].defaultDensity; },
+            (s,p,l,v) => { s.m_params[0].defaultDensity = v; } ),
+        new ParameterDefn("DefaultRestitution", "Bouncyness of an object" ,
+            0f,
+            (s,cf,p,v) => { s.m_params[0].defaultRestitution = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].defaultRestitution; },
+            (s,p,l,v) => { s.m_params[0].defaultRestitution = v; } ),
+        new ParameterDefn("CollisionMargin", "Margin around objects before collisions are calculated (must be zero!)",
+            0f,
+            (s,cf,p,v) => { s.m_params[0].collisionMargin = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].collisionMargin; },
+            (s,p,l,v) => { s.m_params[0].collisionMargin = v; } ),
+        new ParameterDefn("Gravity", "Vertical force of gravity (negative means down)",
+            -9.80665f,
+            (s,cf,p,v) => { s.m_params[0].gravity = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].gravity; },
+            (s,p,l,v) => { s.m_params[0].gravity = v; s.TaintedUpdateParameter(p,l,v); } ),
+        new ParameterDefn("LinearDamping", "Factor to damp linear movement per second (0.0 - 1.0)",
+            0f,
+            (s,cf,p,v) => { s.m_params[0].linearDamping = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].linearDamping; },
+            (s,p,l,v) => { s.UpdateParameterPrims(ref s.m_params[0].linearDamping, p, l, v); } ),
+        new ParameterDefn("AngularDamping", "Factor to damp angular movement per second (0.0 - 1.0)",
+            0f,
+            (s,cf,p,v) => { s.m_params[0].angularDamping = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].angularDamping; },
+            (s,p,l,v) => { s.UpdateParameterPrims(ref s.m_params[0].angularDamping, p, l, v); } ),
+        new ParameterDefn("DeactivationTime", "Seconds before considering an object potentially static",
+            0.2f,
+            (s,cf,p,v) => { s.m_params[0].deactivationTime = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].deactivationTime; },
+            (s,p,l,v) => { s.UpdateParameterPrims(ref s.m_params[0].deactivationTime, p, l, v); } ),
+        new ParameterDefn("LinearSleepingThreshold", "Seconds to measure linear movement before considering static",
+            0.8f,
+            (s,cf,p,v) => { s.m_params[0].linearSleepingThreshold = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].linearSleepingThreshold; },
+            (s,p,l,v) => { s.UpdateParameterPrims(ref s.m_params[0].linearSleepingThreshold, p, l, v); } ),
+        new ParameterDefn("AngularSleepingThreshold", "Seconds to measure angular movement before considering static",
+            1.0f,
+            (s,cf,p,v) => { s.m_params[0].angularSleepingThreshold = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].angularSleepingThreshold; },
+            (s,p,l,v) => { s.UpdateParameterPrims(ref s.m_params[0].angularSleepingThreshold, p, l, v); } ),
+        new ParameterDefn("CcdMotionThreshold", "Continuious collision detection threshold (0 means no CCD)" ,
+            0f,     // set to zero to disable
+            (s,cf,p,v) => { s.m_params[0].ccdMotionThreshold = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].ccdMotionThreshold; },
+            (s,p,l,v) => { s.UpdateParameterPrims(ref s.m_params[0].ccdMotionThreshold, p, l, v); } ),
+        new ParameterDefn("CcdSweptSphereRadius", "Continuious collision detection test radius" ,
+            0f,
+            (s,cf,p,v) => { s.m_params[0].ccdSweptSphereRadius = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].ccdSweptSphereRadius; },
+            (s,p,l,v) => { s.UpdateParameterPrims(ref s.m_params[0].ccdSweptSphereRadius, p, l, v); } ),
+        new ParameterDefn("ContactProcessingThreshold", "Distance between contacts before doing collision check" ,
+            0.1f,
+            (s,cf,p,v) => { s.m_params[0].contactProcessingThreshold = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].contactProcessingThreshold; },
+            (s,p,l,v) => { s.UpdateParameterPrims(ref s.m_params[0].contactProcessingThreshold, p, l, v); } ),
+        new ParameterDefn("TerrainFriction", "Factor to reduce movement against terrain surface" ,
+            0.5f,
+            (s,cf,p,v) => { s.m_params[0].terrainFriction = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].terrainFriction; },
+            (s,p,l,v) => { s.m_params[0].terrainFriction = v; s.TaintedUpdateParameter(p,l,v); } ),
+        new ParameterDefn("TerrainHitFraction", "Distance to measure hit collisions" ,
+            0.8f,
+            (s,cf,p,v) => { s.m_params[0].terrainHitFraction = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].terrainHitFraction; },
+            (s,p,l,v) => { s.m_params[0].terrainHitFraction = v; s.TaintedUpdateParameter(p,l,v); } ),
+        new ParameterDefn("TerrainRestitution", "Bouncyness" ,
+            0f,
+            (s,cf,p,v) => { s.m_params[0].terrainRestitution = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].terrainRestitution; },
+            (s,p,l,v) => { s.m_params[0].terrainRestitution = v; s.TaintedUpdateParameter(p,l,v); } ),
+        new ParameterDefn("AvatarFriction", "Factor to reduce movement against an avatar. Changed on avatar recreation.",
+            0.5f,
+            (s,cf,p,v) => { s.m_params[0].avatarFriction = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].avatarFriction; },
+            (s,p,l,v) => { s.UpdateParameterAvatars(ref s.m_params[0].avatarFriction, p, l, v); } ),
+        new ParameterDefn("AvatarDensity", "Density of an avatar. Changed on avatar recreation.",
+            60f,
+            (s,cf,p,v) => { s.m_params[0].avatarDensity = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].avatarDensity; },
+            (s,p,l,v) => { s.UpdateParameterAvatars(ref s.m_params[0].avatarDensity, p, l, v); } ),
+        new ParameterDefn("AvatarRestitution", "Bouncyness. Changed on avatar recreation.",
+            0f,
+            (s,cf,p,v) => { s.m_params[0].avatarRestitution = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].avatarRestitution; },
+            (s,p,l,v) => { s.UpdateParameterAvatars(ref s.m_params[0].avatarRestitution, p, l, v); } ),
+        new ParameterDefn("AvatarCapsuleRadius", "Radius of space around an avatar",
+            0.37f,
+            (s,cf,p,v) => { s.m_params[0].avatarCapsuleRadius = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].avatarCapsuleRadius; },
+            (s,p,l,v) => { s.UpdateParameterAvatars(ref s.m_params[0].avatarCapsuleRadius, p, l, v); } ),
+        new ParameterDefn("AvatarCapsuleHeight", "Default height of space around avatar",
+            1.5f,
+            (s,cf,p,v) => { s.m_params[0].avatarCapsuleHeight = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].avatarCapsuleHeight; },
+            (s,p,l,v) => { s.UpdateParameterAvatars(ref s.m_params[0].avatarCapsuleHeight, p, l, v); } ),
+            new ParameterDefn("AvatarContactProcessingThreshold", "Distance from capsule to check for collisions",
+            0.1f,
+            (s,cf,p,v) => { s.m_params[0].avatarContactProcessingThreshold = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].avatarContactProcessingThreshold; },
+            (s,p,l,v) => { s.UpdateParameterAvatars(ref s.m_params[0].avatarContactProcessingThreshold, p, l, v); } ),
+            new ParameterDefn("MaxPersistantManifoldPoolSize", "Number of manifolds pooled (0 means default)",
+            0f,     // zero to disable
+            (s,cf,p,v) => { s.m_params[0].maxPersistantManifoldPoolSize = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].maxPersistantManifoldPoolSize; },
+            (s,p,l,v) => { s.m_params[0].maxPersistantManifoldPoolSize = v; } ),
+            new ParameterDefn("ShouldDisableContactPoolDynamicAllocation", "Enable to allow large changes in object count",
+            ConfigurationParameters.numericTrue,
+            (s,cf,p,v) => { s.m_params[0].maxPersistantManifoldPoolSize = s.NumericBool(cf.GetBoolean(p, s.BoolNumeric(v))); },
+            (s) => { return s.m_params[0].shouldDisableContactPoolDynamicAllocation; },
+            (s,p,l,v) => { s.m_params[0].shouldDisableContactPoolDynamicAllocation = v; } ),
+            new ParameterDefn("ShouldForceUpdateAllAabbs", "Enable to recomputer AABBs every simulator step",
+            ConfigurationParameters.numericFalse,
+            (s,cf,p,v) => { s.m_params[0].shouldForceUpdateAllAabbs = s.NumericBool(cf.GetBoolean(p, s.BoolNumeric(v))); },
+            (s) => { return s.m_params[0].shouldForceUpdateAllAabbs; },
+            (s,p,l,v) => { s.m_params[0].shouldForceUpdateAllAabbs = v; } ),
+            new ParameterDefn("ShouldRandomizeSolverOrder", "Enable for slightly better stacking interaction",
+            ConfigurationParameters.numericFalse,
+            (s,cf,p,v) => { s.m_params[0].shouldRandomizeSolverOrder = s.NumericBool(cf.GetBoolean(p, s.BoolNumeric(v))); },
+            (s) => { return s.m_params[0].shouldRandomizeSolverOrder; },
+            (s,p,l,v) => { s.m_params[0].shouldRandomizeSolverOrder = v; } ),
+            new ParameterDefn("ShouldSplitSimulationIslands", "Enable splitting active object scanning islands",
+            ConfigurationParameters.numericFalse,
+            (s,cf,p,v) => { s.m_params[0].shouldSplitSimulationIslands = s.NumericBool(cf.GetBoolean(p, s.BoolNumeric(v))); },
+            (s) => { return s.m_params[0].shouldSplitSimulationIslands; },
+            (s,p,l,v) => { s.m_params[0].shouldSplitSimulationIslands = v; } ),
+            new ParameterDefn("ShouldEnableFrictionCaching", "Enable friction computation caching",
+            ConfigurationParameters.numericFalse,
+            (s,cf,p,v) => { s.m_params[0].shouldEnableFrictionCaching = s.NumericBool(cf.GetBoolean(p, s.BoolNumeric(v))); },
+            (s) => { return s.m_params[0].shouldEnableFrictionCaching; },
+            (s,p,l,v) => { s.m_params[0].shouldEnableFrictionCaching = v; } ),
+            new ParameterDefn("NumberOfSolverIterations", "Number of internal iterations (0 means default)",
+            0f,     // zero says use Bullet default
+            (s,cf,p,v) => { s.m_params[0].numberOfSolverIterations = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].numberOfSolverIterations; },
+            (s,p,l,v) => { s.m_params[0].numberOfSolverIterations = v; } ),
+            new ParameterDefn("LinkConstraintUseFrameOffset", "For linksets built with constraints, enable frame offsetFor linksets built with constraints, enable frame offset.",
+            ConfigurationParameters.numericFalse,
+            (s,cf,p,v) => { s.m_params[0].linkConstraintUseFrameOffset = s.NumericBool(cf.GetBoolean(p, s.BoolNumeric(v))); },
+            (s) => { return s.m_params[0].linkConstraintUseFrameOffset; },
+            (s,p,l,v) => { s.m_params[0].linkConstraintUseFrameOffset = v; } ),
+            new ParameterDefn("LinkConstraintEnableTransMotor", "Whether to enable translational motor on linkset constraints",
+            ConfigurationParameters.numericTrue,
+            (s,cf,p,v) => { s.m_params[0].linkConstraintEnableTransMotor = s.NumericBool(cf.GetBoolean(p, s.BoolNumeric(v))); },
+            (s) => { return s.m_params[0].linkConstraintEnableTransMotor; },
+            (s,p,l,v) => { s.m_params[0].linkConstraintEnableTransMotor = v; } ),
+            new ParameterDefn("LinkConstraintTransMotorMaxVel", "Maximum velocity to be applied by translational motor in linkset constraints",
+            5.0f,
+            (s,cf,p,v) => { s.m_params[0].linkConstraintTransMotorMaxVel = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].linkConstraintTransMotorMaxVel; },
+            (s,p,l,v) => { s.m_params[0].linkConstraintTransMotorMaxVel = v; } ),
+            new ParameterDefn("LinkConstraintTransMotorMaxForce", "Maximum force to be applied by translational motor in linkset constraints",
+            0.1f,
+            (s,cf,p,v) => { s.m_params[0].linkConstraintTransMotorMaxForce = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].linkConstraintTransMotorMaxForce; },
+            (s,p,l,v) => { s.m_params[0].linkConstraintTransMotorMaxForce = v; } ),
+            new ParameterDefn("LinkConstraintCFM", "Amount constraint can be violated. 0=none, 1=all. Default=0",
+            0.0f,
+            (s,cf,p,v) => { s.m_params[0].linkConstraintCFM = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].linkConstraintCFM; },
+            (s,p,l,v) => { s.m_params[0].linkConstraintCFM = v; } ),
+            new ParameterDefn("LinkConstraintERP", "Amount constraint is corrected each tick. 0=none, 1=all. Default = 0.2",
+            0.2f,
+            (s,cf,p,v) => { s.m_params[0].linkConstraintERP = cf.GetFloat(p, v); },
+            (s) => { return s.m_params[0].linkConstraintERP; },
+            (s,p,l,v) => { s.m_params[0].linkConstraintERP = v; } ),
+        new ParameterDefn("DetailedStats", "Frames between outputting detailed phys stats. (0 is off)",
+            0f,
+            (s,cf,p,v) => { s.m_detailedStatsStep = cf.GetInt(p, (int)v); },
+            (s) => { return (float)s.m_detailedStatsStep; },
+            (s,p,l,v) => { s.m_detailedStatsStep = (int)v; } ),
+        new ParameterDefn("ShouldDebugLog", "Enables detailed DEBUG log statements",
+            ConfigurationParameters.numericFalse,
+            (s,cf,p,v) => { s.shouldDebugLog = cf.GetBoolean(p, s.BoolNumeric(v)); },
+            (s) => { return s.NumericBool(s.shouldDebugLog); },
+            (s,p,l,v) => { s.shouldDebugLog = s.BoolNumeric(v); } ),
    };
+    // Convert a boolean to our numeric true and false values
+    public float NumericBool(bool b)
+    {
+        return (b ? ConfigurationParameters.numericTrue : ConfigurationParameters.numericFalse);
+    }
+    // Convert numeric true and false values to a boolean
+    public bool BoolNumeric(float b)
+    {
+        return (b == ConfigurationParameters.numericTrue ? true : false);
+    }
+    // Search through the parameter definitions and return the matching
+    //    ParameterDefn structure.
+    // Case does not matter as names are compared after converting to lower case.
+    // Returns 'false' if the parameter is not found.
+    private bool TryGetParameter(string paramName, out ParameterDefn defn)
+    {
+        bool ret = false;
+        ParameterDefn foundDefn = new ParameterDefn();
+        string pName = paramName.ToLower();
+        foreach (ParameterDefn parm in ParameterDefinitions)
+        {
+            if (pName == parm.name.ToLower())
+            {
+                foundDefn = parm;
+                ret = true;
+                break;
+            }
+        }
+        defn = foundDefn;
+        return ret;
+    }
+    // Pass through the settable parameters and set the default values
+    private void SetParameterDefaultValues()
+    {
+        foreach (ParameterDefn parm in ParameterDefinitions)
+        {
+            parm.setter(this, parm.name, PhysParameterEntry.APPLY_TO_NONE, parm.defaultValue);
+        }
+    }
+    // Get user set values out of the ini file.
+    private void SetParameterConfigurationValues(IConfig cfg)
+    {
+        foreach (ParameterDefn parm in ParameterDefinitions)
+        {
+            parm.userParam(this, cfg, parm.name, parm.defaultValue);
+        }
+    }
+    private PhysParameterEntry[] SettableParameters = new PhysParameterEntry[1];
+    private void BuildParameterTable()
+    {
+        if (SettableParameters.Length < ParameterDefinitions.Length)
+        {
+            List<PhysParameterEntry> entries = new List<PhysParameterEntry>();
+            for (int ii = 0; ii < ParameterDefinitions.Length; ii++)
+            {
+                ParameterDefn pd = ParameterDefinitions[ii];
+                entries.Add(new PhysParameterEntry(pd.name, pd.desc));
+            }
+            // make the list in alphabetical order for estetic reasons
+            entries.Sort(delegate(PhysParameterEntry ppe1, PhysParameterEntry ppe2)
+            {
+                return ppe1.name.CompareTo(ppe2.name);
+            });
+            SettableParameters = entries.ToArray();
+        }
+    }
    #region IPhysicsParameters
    // Get the list of parameters this physics engine supports
    public PhysParameterEntry[] GetParameterList()
    {
+        BuildParameterTable();
        return SettableParameters;
    }
@@ -823,63 +1188,18 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    //   value activated ('terrainFriction' for instance).
    public bool SetPhysicsParameter(string parm, float val, uint localID)
    {
-        bool ret = true;
+        bool ret = false;
-        string lparm = parm.ToLower();
+        ParameterDefn theParam;
-        switch (lparm)
+        if (TryGetParameter(parm, out theParam))
-        {
+        {
-            case "detailedstats": m_detailedStatsStep = (int)val; break;
+            theParam.setter(this, parm, localID, val);
+            ret = true;
-            case "meshlod": m_meshLOD = (int)val; break;
-            case "sculptlod": m_sculptLOD = (int)val; break;
-            case "maxsubstep": m_maxSubSteps = (int)val; break;
-            case "fixedtimestep": m_fixedTimeStep = val; break;
-            case "maxobjectmass": m_maximumObjectMass = val; break;
-            case "defaultfriction": m_params[0].defaultFriction = val; break;
-            case "defaultdensity": m_params[0].defaultDensity = val; break;
-            case "defaultrestitution": m_params[0].defaultRestitution = val; break;
-            case "collisionmargin": m_params[0].collisionMargin = val; break;
-            case "gravity": m_params[0].gravity = val; TaintedUpdateParameter(lparm, localID, val); break;
-            case "lineardamping": UpdateParameterPrims(ref m_params[0].linearDamping, lparm, localID, val); break;
-            case "angulardamping": UpdateParameterPrims(ref m_params[0].angularDamping, lparm, localID, val); break;
-            case "deactivationtime": UpdateParameterPrims(ref m_params[0].deactivationTime, lparm, localID, val); break;
-            case "linearsleepingthreshold": UpdateParameterPrims(ref m_params[0].linearSleepingThreshold, lparm, localID, val); break;
-            case "angularsleepingthreshold": UpdateParameterPrims(ref m_params[0].angularDamping, lparm, localID, val); break;
-            case "ccdmotionthreshold": UpdateParameterPrims(ref m_params[0].ccdMotionThreshold, lparm, localID, val); break;
-            case "ccdsweptsphereradius": UpdateParameterPrims(ref m_params[0].ccdSweptSphereRadius, lparm, localID, val); break;
-            case "contactprocessingthreshold": UpdateParameterPrims(ref m_params[0].contactProcessingThreshold, lparm, localID, val); break;
-            // the following are used only at initialization time so setting them makes no sense
-                // case "maxPersistantmanifoldpoolSize": m_params[0].maxPersistantManifoldPoolSize = val; break;
-                // case "shoulddisablecontactpooldynamicallocation": m_params[0].shouldDisableContactPoolDynamicAllocation = val; break;
-                // case "shouldforceupdateallaabbs": m_params[0].shouldForceUpdateAllAabbs = val; break;
-                // case "shouldrandomizesolverorder": m_params[0].shouldRandomizeSolverOrder = val; break;
-                // case "shouldsplitsimulationislands": m_params[0].shouldSplitSimulationIslands = val; break;
-                // case "shouldenablefrictioncaching": m_params[0].shouldEnableFrictionCaching = val; break;
-                // case "numberofsolveriterations": m_params[0].numberOfSolverIterations = val; break;
-            case "friction": TaintedUpdateParameter(lparm, localID, val); break;
-            case "restitution": TaintedUpdateParameter(lparm, localID, val); break;
-            // set a terrain physical feature and cause terrain to be recalculated
-            case "terrainfriction": m_params[0].terrainFriction = val; TaintedUpdateParameter("terrain", 0, val); break;
-            case "terrainhitfraction": m_params[0].terrainHitFraction = val; TaintedUpdateParameter("terrain", 0, val); break;
-            case "terrainrestitution": m_params[0].terrainRestitution = val; TaintedUpdateParameter("terrain", 0, val); break;
-            // set an avatar physical feature and cause avatar(s) to be recalculated
-            case "avatarfriction": UpdateParameterAvatars(ref m_params[0].avatarFriction, "avatar", localID, val); break;
-            case "avatardensity": UpdateParameterAvatars(ref m_params[0].avatarDensity, "avatar", localID, val); break;
-            case "avatarrestitution": UpdateParameterAvatars(ref m_params[0].avatarRestitution, "avatar", localID, val); break;
-            case "avatarcapsuleradius": UpdateParameterAvatars(ref m_params[0].avatarCapsuleRadius, "avatar", localID, val); break;
-            case "avatarcapsuleheight": UpdateParameterAvatars(ref m_params[0].avatarCapsuleHeight, "avatar", localID, val); break;
-            case "avatarcontactprocessingthreshold": UpdateParameterAvatars(ref m_params[0].avatarContactProcessingThreshold, "avatar", localID, val); break;
-            default: ret = false; break;
        }
        return ret;
    }
    // check to see if we are updating a parameter for a particular or all of the prims
-    private void UpdateParameterPrims(ref float loc, string parm, uint localID, float val)
+    protected void UpdateParameterPrims(ref float loc, string parm, uint localID, float val)
    {
        List<uint> operateOn;
        lock (m_prims) operateOn = new List<uint>(m_prims.Keys);
@@ -887,7 +1207,7 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    }
    // check to see if we are updating a parameter for a particular or all of the avatars
-    private void UpdateParameterAvatars(ref float loc, string parm, uint localID, float val)
+    protected void UpdateParameterAvatars(ref float loc, string parm, uint localID, float val)
    {
        List<uint> operateOn;
        lock (m_avatars) operateOn = new List<uint>(m_avatars.Keys);
@@ -898,7 +1218,7 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    // If the local ID is APPLY_TO_NONE, just change the default value
    // If the localID is APPLY_TO_ALL change the default value and apply the new value to all the lIDs
    // If the localID is a specific object, apply the parameter change to only that object
-    private void UpdateParameterSet(List<uint> lIDs, ref float defaultLoc, string parm, uint localID, float val)
+    protected void UpdateParameterSet(List<uint> lIDs, ref float defaultLoc, string parm, uint localID, float val)
    {
        switch (localID)
        {
@@ -925,7 +1245,7 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    }
    // schedule the actual updating of the paramter to when the phys engine is not busy
-    private void TaintedUpdateParameter(string parm, uint localID, float val)
+    protected void TaintedUpdateParameter(string parm, uint localID, float val)
    {
        uint xlocalID = localID;
        string xparm = parm.ToLower();
@@ -940,50 +1260,12 @@ public class BSScene : PhysicsScene, IPhysicsParameters
    public bool GetPhysicsParameter(string parm, out float value)
    {
        float val = 0f;
-        bool ret = true;
+        bool ret = false;
-        switch (parm.ToLower())
+        ParameterDefn theParam;
-        {
+        if (TryGetParameter(parm, out theParam))
-            case "detailedstats": val = (int)m_detailedStatsStep; break;
+        {
-            case "meshlod": val = (float)m_meshLOD; break;
+            val = theParam.getter(this);
-            case "sculptlod": val = (float)m_sculptLOD; break;
+            ret = true;
-            case "maxsubstep": val = (float)m_maxSubSteps; break;
-            case "fixedtimestep": val = m_fixedTimeStep; break;
-            case "maxobjectmass": val = m_maximumObjectMass; break;
-            case "defaultfriction": val = m_params[0].defaultFriction; break;
-            case "defaultdensity": val = m_params[0].defaultDensity; break;
-            case "defaultrestitution": val = m_params[0].defaultRestitution; break;
-            case "collisionmargin": val = m_params[0].collisionMargin; break;
-            case "gravity": val = m_params[0].gravity; break;
-            case "lineardamping": val = m_params[0].linearDamping; break;
-            case "angulardamping": val = m_params[0].angularDamping; break;
-            case "deactivationtime": val = m_params[0].deactivationTime; break;
-            case "linearsleepingthreshold": val = m_params[0].linearSleepingThreshold; break;
-            case "angularsleepingthreshold": val = m_params[0].angularDamping; break;
-            case "ccdmotionthreshold": val = m_params[0].ccdMotionThreshold; break;
-            case "ccdsweptsphereradius": val = m_params[0].ccdSweptSphereRadius; break;
-            case "contactprocessingthreshold": val = m_params[0].contactProcessingThreshold; break;
-                case "maxPersistantmanifoldpoolSize": val = m_params[0].maxPersistantManifoldPoolSize; break;
-                case "shoulddisablecontactpooldynamicallocation": val = m_params[0].shouldDisableContactPoolDynamicAllocation; break;
-                case "shouldforceupdateallaabbs": val = m_params[0].shouldForceUpdateAllAabbs; break;
-                case "shouldrandomizesolverorder": val = m_params[0].shouldRandomizeSolverOrder; break;
-                case "shouldsplitsimulationislands": val = m_params[0].shouldSplitSimulationIslands; break;
-                case "shouldenablefrictioncaching": val = m_params[0].shouldEnableFrictionCaching; break;
-                case "numberofsolveriterations": val = m_params[0].numberOfSolverIterations; break;
-            case "terrainfriction": val = m_params[0].terrainFriction; break;
-            case "terrainhitfraction": val = m_params[0].terrainHitFraction; break;
-            case "terrainrestitution": val = m_params[0].terrainRestitution; break;
-            case "avatarfriction": val = m_params[0].avatarFriction; break;
-            case "avatardensity": val = m_params[0].avatarDensity; break;
-            case "avatarrestitution": val = m_params[0].avatarRestitution; break;
-            case "avatarcapsuleradius": val = m_params[0].avatarCapsuleRadius; break;
-            case "avatarcapsuleheight": val = m_params[0].avatarCapsuleHeight; break;
-            case "avatarcontactprocessingthreshold": val = m_params[0].avatarContactProcessingThreshold; break;
-            default: ret = false; break;
        }
        value = val;
        return ret;
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs b/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
index 086f0dc..0ffbc94 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs
@@ -32,6 +32,28 @@ using OpenMetaverse;
 namespace OpenSim.Region.Physics.BulletSPlugin {
+// Classes to allow some type checking for the API
+public struct BulletSim
+{
+    public BulletSim(uint id, IntPtr xx) { ID = id;  Ptr = xx; }
+    public IntPtr Ptr;
+    public uint ID;
+}
+public struct BulletBody
+{
+    public BulletBody(uint id, IntPtr xx) { ID = id;  Ptr = xx; }
+    public IntPtr Ptr;
+    public uint ID;
+}
+public struct BulletConstraint
+{
+    public BulletConstraint(IntPtr xx) { Ptr = xx; }
+    public IntPtr Ptr;
+}
+// ===============================================================================
 [StructLayout(LayoutKind.Sequential)]
 public struct ConvexHull 
 {
@@ -44,13 +66,14 @@ public struct ShapeData
 {
    public enum PhysicsShapeType
    {
-                SHAPE_AVATAR = 0,
+                SHAPE_UNKNOWN   = 0,
-                SHAPE_BOX = 1,
+                SHAPE_AVATAR    = 1,
-                SHAPE_CONE = 2,
+                SHAPE_BOX       = 2,
-                SHAPE_CYLINDER = 3,
+                SHAPE_CONE      = 3,
-                SHAPE_SPHERE = 4,
+                SHAPE_CYLINDER  = 4,
-                SHAPE_MESH = 5,
+                SHAPE_SPHERE    = 5,
-                SHAPE_HULL = 6
+                SHAPE_MESH      = 6,
+                SHAPE_HULL      = 7
    };
    public uint ID;
    public PhysicsShapeType Type;
@@ -64,12 +87,12 @@ public struct ShapeData
    public System.UInt64 MeshKey;
    public float Friction;
    public float Restitution;
-    public int Collidable;
+    public float Collidable;    // true of things bump into this
-    public int Static;  // true if a static object. Otherwise gravity, etc.
+    public float Static;        // true if a static object. Otherwise gravity, etc.
-    // note that bools are passed as ints since bool size changes by language and architecture
+    // note that bools are passed as floats since bool size changes by language and architecture
-    public const int numericTrue = 1;
+    public const float numericTrue = 1f;
-    public const int numericFalse = 0;
+    public const float numericFalse = 0f;
 }
 [StructLayout(LayoutKind.Sequential)]
 public struct SweepHit 
@@ -142,10 +165,56 @@ public struct ConfigurationParameters
        public float shouldEnableFrictionCaching;
        public float numberOfSolverIterations;
+    public float linkConstraintUseFrameOffset;
+    public float linkConstraintEnableTransMotor;
+    public float linkConstraintTransMotorMaxVel;
+    public float linkConstraintTransMotorMaxForce;
+    public float linkConstraintERP;
+    public float linkConstraintCFM;
    public const float numericTrue = 1f;
    public const float numericFalse = 0f;
 }
+// Values used by Bullet and BulletSim to control collisions
+public enum CollisionFlags : uint
+{
+    STATIC_OBJECT                 = 1 << 0,
+    KINEMATIC_OBJECT              = 1 << 1,
+    NO_CONTACT_RESPONSE           = 1 << 2,
+    CUSTOM_MATERIAL_CALLBACK      = 1 << 3,
+    CHARACTER_OBJECT              = 1 << 4,
+    DISABLE_VISUALIZE_OBJECT      = 1 << 5,
+    DISABLE_SPU_COLLISION_PROCESS = 1 << 6,
+    // Following used by BulletSim to control collisions
+    VOLUME_DETECT_OBJECT          = 1 << 10,
+    PHANTOM_OBJECT                = 1 << 11,
+    PHYSICAL_OBJECT               = 1 << 12,
+};
+// CFM controls the 'hardness' of the constraint. 0=fixed, 0..1=violatable. Default=0
+// ERP controls amount of correction per tick. Usable range=0.1..0.8. Default=0.2.
+public enum ConstraintParams : int
+{
+    BT_CONSTRAINT_ERP = 1,  // this one is not used in Bullet as of 20120730
+    BT_CONSTRAINT_STOP_ERP,
+    BT_CONSTRAINT_CFM,
+    BT_CONSTRAINT_STOP_CFM,
+};
+public enum ConstraintParamAxis : int
+{
+    AXIS_LINEAR_X = 0,
+    AXIS_LINEAR_Y,
+    AXIS_LINEAR_Z,
+    AXIS_ANGULAR_X,
+    AXIS_ANGULAR_Y,
+    AXIS_ANGULAR_Z,
+    AXIS_LINEAR_ALL = 20,    // these last three added by BulletSim so we don't have to do zillions of calls
+    AXIS_ANGULAR_ALL,
+    AXIS_ALL
+};
+// ===============================================================================
 static class BulletSimAPI {
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
@@ -195,6 +264,7 @@ public static extern bool DestroyMesh(uint worldID, System.UInt64 meshKey);
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern bool CreateObject(uint worldID, ShapeData shapeData);
+/*  Remove old functionality
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern void CreateLinkset(uint worldID, int objectCount, ShapeData[] shapeDatas);
@@ -209,11 +279,15 @@ public static extern bool RemoveConstraintByID(uint worldID, uint id1);
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern bool RemoveConstraint(uint worldID, uint id1, uint id2);
+ */
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern Vector3 GetObjectPosition(uint WorldID, uint id);
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern Quaternion GetObjectOrientation(uint WorldID, uint id);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern bool SetObjectTranslation(uint worldID, uint id, Vector3 position, Quaternion rotation);
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
@@ -268,5 +342,179 @@ public static extern void DumpBulletStatistics();
 public delegate void DebugLogCallback([MarshalAs(UnmanagedType.LPStr)]string msg);
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern void SetDebugLogCallback(DebugLogCallback callback);
+// ===============================================================================
+// ===============================================================================
+// ===============================================================================
+// A new version of the API that enables moving all the logic out of the C++ code and into
+//    the C# code. This will make modifications easier for the next person.
+// This interface passes the actual pointers to the objects in the unmanaged
+//    address space. All the management (calls for creation/destruction/lookup)
+//    is done in the C# code.
+// The names have a "2" tacked on. This will be removed as the C# code gets rebuilt
+//    and the old code is removed.
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr GetSimHandle2(uint worldID);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr GetBodyHandleWorldID2(uint worldID, uint id);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr GetBodyHandle2(IntPtr sim, uint id);
+// ===============================================================================
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr Initialize2(Vector3 maxPosition, IntPtr parms,
+                                                                                        int maxCollisions,  IntPtr collisionArray,
+                                                                                        int maxUpdates, IntPtr updateArray);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool UpdateParameter2(IntPtr sim, uint localID, String parm, float value);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern void SetHeightmap2(IntPtr sim, float[] heightmap);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern void Shutdown2(IntPtr sim);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern int PhysicsStep2(IntPtr sim, float timeStep, int maxSubSteps, float fixedTimeStep,
+                        out int updatedEntityCount, 
+                        out IntPtr updatedEntitiesPtr,
+                        out int collidersCount,
+                        out IntPtr collidersPtr);
+/*
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr CreateMesh2(IntPtr sim, int indicesCount, int* indices, int verticesCount, float* vertices );
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool BuildHull2(IntPtr sim, IntPtr mesh);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool ReleaseHull2(IntPtr sim, IntPtr mesh);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool DestroyMesh2(IntPtr sim, IntPtr mesh);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr CreateObject2(IntPtr sim, ShapeData shapeData);
+*/
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr CreateConstraint2(IntPtr sim, IntPtr obj1, IntPtr obj2,
+                    Vector3 frame1loc, Quaternion frame1rot,
+                    Vector3 frame2loc, Quaternion frame2rot,
+                    bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetLinearLimits2(IntPtr constrain, Vector3 low, Vector3 hi);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetAngularLimits2(IntPtr constrain, Vector3 low, Vector3 hi);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool UseFrameOffset2(IntPtr constrain, float enable);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool TranslationalLimitMotor2(IntPtr constrain, float enable, float targetVel, float maxMotorForce);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool CalculateTransforms2(IntPtr constrain);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetConstraintParam2(IntPtr constrain, ConstraintParams paramIndex, float value, ConstraintParamAxis axis);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool DestroyConstraint2(IntPtr sim, IntPtr constrain);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern Vector3 GetPosition2(IntPtr obj);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern Quaternion GetOrientation2(IntPtr obj);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetTranslation2(IntPtr obj, Vector3 position, Quaternion rotation);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetVelocity2(IntPtr obj, Vector3 velocity);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetAngularVelocity2(IntPtr obj, Vector3 angularVelocity);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetObjectForce2(IntPtr obj, Vector3 force);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetCcdMotionThreshold2(IntPtr obj, float val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetCcdSweepSphereRadius2(IntPtr obj, float val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetDamping2(IntPtr obj, float lin_damping, float ang_damping);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetDeactivationTime2(IntPtr obj, float val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetSleepingThresholds2(IntPtr obj, float lin_threshold, float ang_threshold);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetContactProcessingThreshold2(IntPtr obj, float val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetFriction2(IntPtr obj, float val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetRestitution2(IntPtr obj, float val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetLinearVelocity2(IntPtr obj, Vector3 val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetInterpolation2(IntPtr obj, Vector3 lin, Vector3 ang);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr SetCollisionFlags2(IntPtr obj, uint flags);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr AddToCollisionFlags2(IntPtr obj, uint flags);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr RemoveFromCollisionFlags2(IntPtr obj, uint flags);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetMassProps2(IntPtr obj, float mass, Vector3 inertia);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool UpdateInertiaTensor2(IntPtr obj);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetGravity2(IntPtr obj, Vector3 val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr ClearForces2(IntPtr obj);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool SetMargin2(IntPtr obj, float val);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool UpdateSingleAabb2(IntPtr world, IntPtr obj);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool AddObjectToWorld2(IntPtr world, IntPtr obj);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool RemoveObjectFromWorld2(IntPtr world, IntPtr obj);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool DestroyObject2(IntPtr world, uint id);
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern void DumpPhysicsStatistics2(IntPtr sim);
 }
 }
diff --git a/OpenSim/Region/Physics/Manager/PhysicsScene.cs b/OpenSim/Region/Physics/Manager/PhysicsScene.cs
index cfede55..5274f3b 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsScene.cs
+++ b/OpenSim/Region/Physics/Manager/PhysicsScene.cs
@@ -71,6 +71,9 @@ namespace OpenSim.Region.Physics.Manager
        All = 0x3f
    }
+    public delegate void RequestAssetDelegate(UUID assetID, AssetReceivedDelegate callback);
+    public delegate void AssetReceivedDelegate(AssetBase asset);
    /// <summary>
    /// Contact result from a raycast.
    /// </summary>
@@ -103,6 +106,8 @@ namespace OpenSim.Region.Physics.Manager
            get { return new NullPhysicsScene(); }
        }
+        public RequestAssetDelegate RequestAssetMethod { private get; set; }
        public virtual void TriggerPhysicsBasedRestart()
        {
            physicsCrash handler = OnPhysicsCrash;
diff --git a/OpenSim/Region/Physics/OdePlugin/OdeScene.cs b/OpenSim/Region/Physics/OdePlugin/OdeScene.cs
index 32e81e2..929b019 100644
--- a/OpenSim/Region/Physics/OdePlugin/OdeScene.cs
+++ b/OpenSim/Region/Physics/OdePlugin/OdeScene.cs
@@ -290,7 +290,6 @@ namespace OpenSim.Region.Physics.OdePlugin
        private readonly IntPtr contactgroup;
-        internal IntPtr LandGeom;
        internal IntPtr WaterGeom;
        private float nmTerrainContactFriction = 255.0f;
@@ -489,6 +488,8 @@ namespace OpenSim.Region.Physics.OdePlugin
        /// </summary>
        internal Object OdeLock = new Object();
+        private bool _worldInitialized = false;
        public IMesher mesher;
        private IConfigSource m_config;
@@ -875,6 +876,8 @@ namespace OpenSim.Region.Physics.OdePlugin
                    staticPrimspace[i, j] = IntPtr.Zero;
                }
            }
+            _worldInitialized = true;
        }
 //        internal void waitForSpaceUnlock(IntPtr space)
@@ -1508,8 +1511,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                {
                    if (((Math.Abs(contactGeom.normal.X - contact.normal.X) < 1.026f)
                        && (Math.Abs(contactGeom.normal.Y - contact.normal.Y) < 0.303f)
-                        && (Math.Abs(contactGeom.normal.Z - contact.normal.Z) < 0.065f))
+                        && (Math.Abs(contactGeom.normal.Z - contact.normal.Z) < 0.065f)))
-                        && contactGeom.g1 != LandGeom && contactGeom.g2 != LandGeom)
                    {
                        if (Math.Abs(contact.depth - contactGeom.depth) < 0.052f)
                        {
@@ -1538,7 +1540,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                    //d.GeomGetAABB(contactGeom.g2, out aabb2);
                    //d.GeomGetAABB(contactGeom.g1, out aabb1);
                    //aabb1.
-                    if (((Math.Abs(contactGeom.normal.X - contact.normal.X) < 1.026f) && (Math.Abs(contactGeom.normal.Y - contact.normal.Y) < 0.303f) && (Math.Abs(contactGeom.normal.Z - contact.normal.Z) < 0.065f)) && contactGeom.g1 != LandGeom && contactGeom.g2 != LandGeom)
+                    if (((Math.Abs(contactGeom.normal.X - contact.normal.X) < 1.026f) && (Math.Abs(contactGeom.normal.Y - contact.normal.Y) < 0.303f) && (Math.Abs(contactGeom.normal.Z - contact.normal.Z) < 0.065f)))
                    {
                        if (contactGeom.normal.X == contact.normal.X && contactGeom.normal.Y == contact.normal.Y && contactGeom.normal.Z == contact.normal.Z)
                        {
@@ -2896,6 +2898,8 @@ namespace OpenSim.Region.Physics.OdePlugin
        /// <returns>The number of frames simulated over that period.</returns>
        public override float Simulate(float timeStep)
        {
+            if (!_worldInitialized) return 11f;
            int startFrameTick = CollectStats ? Util.EnvironmentTickCount() : 0;
            int tempTick = 0, tempTick2 = 0;
@@ -4017,6 +4021,8 @@ namespace OpenSim.Region.Physics.OdePlugin
        public override void Dispose()
        {
+            _worldInitialized = false;
            m_rayCastManager.Dispose();
            m_rayCastManager = null;
@@ -4037,6 +4043,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                d.WorldDestroy(world);
                //d.CloseODE();
            }
        }
        public override Dictionary<uint, float> GetTopColliders()
diff --git a/OpenSim/Region/RegionCombinerModule/RegionCombinerModule.cs b/OpenSim/Region/RegionCombinerModule/RegionCombinerModule.cs
index 204c4ff..3144d76 100644
--- a/OpenSim/Region/RegionCombinerModule/RegionCombinerModule.cs
+++ b/OpenSim/Region/RegionCombinerModule/RegionCombinerModule.cs
@@ -99,6 +99,8 @@ namespace OpenSim.Region.RegionCombinerModule
        public void RemoveRegion(Scene scene)
        {
+            lock (m_startingScenes)
+                m_startingScenes.Remove(scene.RegionInfo.originRegionID);
        }
        public void RegionLoaded(Scene scene)
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/AsyncCommandManager.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/AsyncCommandManager.cs
index 693992a..94fd940 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/AsyncCommandManager.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/AsyncCommandManager.cs
@@ -31,6 +31,7 @@ using System.Collections.Generic;
 using System.Threading;
 using OpenMetaverse;
 using OpenSim.Framework;
+using OpenSim.Framework.Monitoring;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.ScriptEngine.Interfaces;
 using OpenSim.Region.ScriptEngine.Shared;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index cd72dc2..ce1c364 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -6885,22 +6885,22 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
            if (folderID == UUID.Zero)
                return;
-            byte[] bucket = new byte[1];
-            bucket[0] = (byte)AssetType.Folder;
-            //byte[] objBytes = folderID.GetBytes();
-            //Array.Copy(objBytes, 0, bucket, 1, 16);
-            GridInstantMessage msg = new GridInstantMessage(World,
-                    m_host.OwnerID, m_host.Name, destID,
-                    (byte)InstantMessageDialog.TaskInventoryOffered,
-                    false, category+". "+m_host.Name+" is located at "+
-                    World.RegionInfo.RegionName+" "+
-                    m_host.AbsolutePosition.ToString(),
-                    folderID, true, m_host.AbsolutePosition,
-                    bucket);
            if (m_TransferModule != null)
+            {
+                byte[] bucket = new byte[] { (byte)AssetType.Folder };
+    
+                GridInstantMessage msg = new GridInstantMessage(World,
+                        m_host.UUID, m_host.Name + ", an object owned by " +
+                        resolveName(m_host.OwnerID) + ",", destID,
+                        (byte)InstantMessageDialog.TaskInventoryOffered,
+                        false, category + "\n" + m_host.Name + " is located at " +
+                        World.RegionInfo.RegionName + " " +
+                        m_host.AbsolutePosition.ToString(),
+                        folderID, true, m_host.AbsolutePosition,
+                        bucket);
                m_TransferModule.SendInstantMessage(msg, delegate(bool success) {});
+            }
        }
        public void llSetVehicleType(int type)
@@ -11847,7 +11847,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                                break;
                            case ScriptBaseClass.OBJECT_ROT:
                                {
-                                    Quaternion rot = Quaternion.Identity; 
+                                    Quaternion rot = Quaternion.Identity;
                                    if (obj.ParentGroup.RootPart == obj)
                                        rot = obj.ParentGroup.GroupRotation;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
index 4bd3dff..7844c75 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
@@ -200,24 +200,34 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
            for (int i = 0; i < result.Length; i++)
            {
                if (result[i] is string)
+                {
                    llist[i] = new LSL_String((string)result[i]);
+                }
                else if (result[i] is int)
+                {
                    llist[i] = new LSL_Integer((int)result[i]);
+                }
                else if (result[i] is float)
+                {
                    llist[i] = new LSL_Float((float)result[i]);
+                }
+                else if (result[i] is UUID)
+                {
+                    llist[i] = new LSL_Key(result[i].ToString());
+                }
                else if (result[i] is OpenMetaverse.Vector3)
                {
                    OpenMetaverse.Vector3 vresult = (OpenMetaverse.Vector3)result[i];
-                    llist[i] = new LSL_Vector(vresult.X,vresult.Y,vresult.Z);
+                    llist[i] = new LSL_Vector(vresult.X, vresult.Y, vresult.Z);
                }
                else if (result[i] is OpenMetaverse.Quaternion)
                {
                    OpenMetaverse.Quaternion qresult = (OpenMetaverse.Quaternion)result[i];
-                    llist[i] = new LSL_Rotation(qresult.X,qresult.Y,qresult.Z,qresult.W);
+                    llist[i] = new LSL_Rotation(qresult.X, qresult.Y, qresult.Z, qresult.W);
                }
                else
                {
-                    MODError(String.Format("unknown list element returned by {0}",fname));
+                    MODError(String.Format("unknown list element {1} returned by {0}", fname, result[i].GetType().Name));
                }
            }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
index 29d0342..1181c10 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
@@ -3290,8 +3290,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                    ((LSL_Api)m_LSL_Api).llSay(0, string.Format("Unable to attach, item '{0}' is not an object.", itemName));
                throw new Exception(String.Format("The inventory item '{0}' is not an object", itemName));
-                return;
            }
            ScenePresence sp = World.GetScenePresence(avatarId);
@@ -3322,5 +3320,47 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
            InitLSL();
            ((LSL_Api)m_LSL_Api).DetachFromAvatar();
        }
+        /// <summary>
+        /// Checks if thing is a UUID.
+        /// </summary>
+        /// <param name="thing"></param>
+        /// <returns>1 if thing is a valid UUID, 0 otherwise</returns>
+        public LSL_Integer osIsUUID(string thing)
+        {
+            CheckThreatLevel(ThreatLevel.None, "osIsUUID");
+            m_host.AddScriptLPS(1);
+            UUID test;
+            return UUID.TryParse(thing, out test) ? 1 : 0;
+        }
+        /// <summary>
+        /// Wraps to Math.Min()
+        /// </summary>
+        /// <param name="a"></param>
+        /// <param name="b"></param>
+        /// <returns></returns>
+        public LSL_Float osMin(double a, double b)
+        {
+            CheckThreatLevel(ThreatLevel.None, "osMin");
+            m_host.AddScriptLPS(1);
+            return Math.Min(a, b);
+        }
+        /// <summary>
+        /// Wraps to Math.max()
+        /// </summary>
+        /// <param name="a"></param>
+        /// <param name="b"></param>
+        /// <returns></returns>
+        public LSL_Float osMax(double a, double b)
+        {
+            CheckThreatLevel(ThreatLevel.None, "osMax");
+            m_host.AddScriptLPS(1);
+            return Math.Max(a, b);
+        }
    }
 }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs
index 19f3ce1..678f9d5 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs
@@ -51,8 +51,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
        {
            get
            {
-                lock (SenseRepeatListLock)
+                return SenseRepeaters.Count;
-                    return SenseRepeaters.Count;
            }
        }
@@ -61,8 +60,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
            m_CmdManager = CmdManager;
            maximumRange = CmdManager.m_ScriptEngine.Config.GetDouble("SensorMaxRange", 96.0d);
            maximumToReturn = CmdManager.m_ScriptEngine.Config.GetInt("SensorMaxResults", 16);
+            m_npcModule = m_CmdManager.m_ScriptEngine.World.RequestModuleInterface<INPCModule>();
        }
+        private INPCModule m_npcModule;
        private Object SenseLock = new Object();
        private const int AGENT = 1;
@@ -115,6 +117,16 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
            public double distance;
        }
+        /// <summary>
+        /// Sensors to process.
+        /// </summary>
+        /// <remarks>
+        /// Do not add or remove sensors from this list directly.  Instead, copy the list and substitute the updated
+        /// copy.  This is to avoid locking the list for the duration of the sensor sweep, which increases the danger
+        /// of deadlocks with future code updates.
+        ///
+        /// Always lock SenseRepeatListLock when updating this list.
+        /// </remarks>
        private List<SenseRepeatClass> SenseRepeaters = new List<SenseRepeatClass>();
        private object SenseRepeatListLock = new object();
@@ -124,6 +136,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
        {
            // Always remove first, in case this is a re-set
            UnSetSenseRepeaterEvents(m_localID, m_itemID);
            if (sec == 0) // Disabling timer
                return;
@@ -143,9 +156,17 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
            ts.host = host;
            ts.next = DateTime.Now.ToUniversalTime().AddSeconds(ts.interval);
+            AddSenseRepeater(ts);
+        }
+        private void AddSenseRepeater(SenseRepeatClass senseRepeater)
+        {
            lock (SenseRepeatListLock)
            {
-                SenseRepeaters.Add(ts);
+                List<SenseRepeatClass> newSenseRepeaters = new List<SenseRepeatClass>(SenseRepeaters);
+                newSenseRepeaters.Add(senseRepeater);
+                SenseRepeaters = newSenseRepeaters;
            }
        }
@@ -154,39 +175,32 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
            // Remove from timer
            lock (SenseRepeatListLock)
            {
-                List<SenseRepeatClass> NewSensors = new List<SenseRepeatClass>();
+                List<SenseRepeatClass> newSenseRepeaters = new List<SenseRepeatClass>();
                foreach (SenseRepeatClass ts in SenseRepeaters)
                {
                    if (ts.localID != m_localID || ts.itemID != m_itemID)
                    {
-                        NewSensors.Add(ts);
+                        newSenseRepeaters.Add(ts);
                    }
                }
-                SenseRepeaters.Clear();
-                SenseRepeaters = NewSensors;
+                SenseRepeaters = newSenseRepeaters;
            }
        }
        public void CheckSenseRepeaterEvents()
        {
-            lock (SenseRepeatListLock)
+            // Go through all timers
+            foreach (SenseRepeatClass ts in SenseRepeaters)
            {
-                // Nothing to do here?
+                // Time has passed?
-                if (SenseRepeaters.Count == 0)
+                if (ts.next.ToUniversalTime() < DateTime.Now.ToUniversalTime())
-                    return;
-                // Go through all timers
-                foreach (SenseRepeatClass ts in SenseRepeaters)
                {
-                    // Time has passed?
+                    SensorSweep(ts);
-                    if (ts.next.ToUniversalTime() < DateTime.Now.ToUniversalTime())
+                    // set next interval
-                    {
+                    ts.next = DateTime.Now.ToUniversalTime().AddSeconds(ts.interval);
-                        SensorSweep(ts);
-                        // set next interval
-                        ts.next = DateTime.Now.ToUniversalTime().AddSeconds(ts.interval);
-                    }
                }
-            } // lock
+            }
        }
        public void SenseOnce(uint m_localID, UUID m_itemID,
@@ -440,8 +454,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
        private List<SensedEntity> doAgentSensor(SenseRepeatClass ts)
        {
-            INPCModule npcModule = m_CmdManager.m_ScriptEngine.World.RequestModuleInterface<INPCModule>();
            List<SensedEntity> sensedEntities = new List<SensedEntity>();
            // If nobody about quit fast
@@ -477,7 +489,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
            bool attached = (SensePoint.ParentGroup.AttachmentPoint != 0);
            Vector3 toRegionPos;
            double dis;
+            
            Action<ScenePresence> senseEntity = new Action<ScenePresence>(presence =>
            {
 //                m_log.DebugFormat(
@@ -486,7 +498,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
                if ((ts.type & NPC) == 0 && presence.PresenceType == PresenceType.Npc)
                {
-                    INPC npcData = npcModule.GetNPC(presence.UUID, presence.Scene);
+                    INPC npcData = m_npcModule.GetNPC(presence.UUID, presence.Scene);
                    if (npcData == null || !npcData.SenseAsAgent)
                    {
 //                        m_log.DebugFormat(
@@ -504,7 +516,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
                    }
                    else
                    {
-                        INPC npcData = npcModule.GetNPC(presence.UUID, presence.Scene);
+                        INPC npcData = m_npcModule.GetNPC(presence.UUID, presence.Scene);
                        if (npcData != null && npcData.SenseAsAgent)
                        {
 //                            m_log.DebugFormat(
@@ -619,21 +631,19 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
        {
            List<Object> data = new List<Object>();
-            lock (SenseRepeatListLock)
+            foreach (SenseRepeatClass ts in SenseRepeaters)
            {
-                foreach (SenseRepeatClass ts in SenseRepeaters)
+                if (ts.itemID == itemID)
                {
-                    if (ts.itemID == itemID)
+                    data.Add(ts.interval);
-                    {
+                    data.Add(ts.name);
-                        data.Add(ts.interval);
+                    data.Add(ts.keyID);
-                        data.Add(ts.name);
+                    data.Add(ts.type);
-                        data.Add(ts.keyID);
+                    data.Add(ts.range);
-                        data.Add(ts.type);
+                    data.Add(ts.arc);
-                        data.Add(ts.range);
-                        data.Add(ts.arc);
-                    }
                }
            }
            return data.ToArray();
        }
@@ -667,8 +677,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
                ts.next =
                    DateTime.Now.ToUniversalTime().AddSeconds(ts.interval);
-                lock (SenseRepeatListLock)
+                AddSenseRepeater(ts);
-                    SenseRepeaters.Add(ts);
                
                idx += 6;
            }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
index 1facc96..aba66d3 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
@@ -276,5 +276,28 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
        void osSetTerrainTexture(int level, LSL_Key texture);
        void osSetTerrainTextureHeight(int corner, double low, double high);
+        /// <summary>
+        /// Checks if thing is a UUID.
+        /// </summary>
+        /// <param name="thing"></param>
+        /// <returns>1 if thing is a valid UUID, 0 otherwise</returns>
+        LSL_Integer osIsUUID(string thing);
+        /// <summary>
+        /// Wraps to Math.Min()
+        /// </summary>
+        /// <param name="a"></param>
+        /// <param name="b"></param>
+        /// <returns></returns>
+        LSL_Float osMin(double a, double b);
+        /// <summary>
+        /// Wraps to Math.max()
+        /// </summary>
+        /// <param name="a"></param>
+        /// <param name="b"></param>
+        /// <returns></returns>
+        LSL_Float osMax(double a, double b);
    }
 }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
index b40bdf0..53daa13 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
@@ -930,5 +930,20 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
        {
            m_OSSL_Functions.osSetTerrainTextureHeight(corner, low, high);
        }
+        public LSL_Integer osIsUUID(string thing)
+        {
+            return m_OSSL_Functions.osIsUUID(thing);
+        }
+        public LSL_Float osMin(double a, double b)
+        {
+            return m_OSSL_Functions.osMin(a, b);
+        }
+        public LSL_Float osMax(double a, double b)
+        {
+            return m_OSSL_Functions.osMax(a, b);
+        }
    }
 }
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
index b24f016..97dd0f6 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
@@ -38,7 +38,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 {
    public class CSCodeGenerator : ICodeConverter
    {
-//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+//      private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
        private SYMBOL m_astRoot = null;
        private Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> m_positionMap;
@@ -255,7 +255,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
            else if (s is IdentDotExpression)
                retstr += Generate(CheckName(((IdentDotExpression) s).Name) + "." + ((IdentDotExpression) s).Member, s);
            else if (s is IdentExpression)
-                retstr += Generate(CheckName(((IdentExpression) s).Name), s);
+                retstr += GenerateIdentifier(((IdentExpression) s).Name, s);
            else if (s is IDENT)
                retstr += Generate(CheckName(((TOKEN) s).yytext), s);
            else
@@ -868,6 +868,41 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
        }
        /// <summary>
+        /// Generates the code for an identifier
+        /// </summary>
+        /// <param name="id">The symbol name</param>
+        /// <param name="s">The Symbol node.</param>
+        /// <returns>String containing C# code for identifier reference.</returns>
+        private string GenerateIdentifier(string id, SYMBOL s)
+        {
+            if (m_comms != null)
+            {
+                object value = m_comms.LookupModConstant(id);
+                if (value != null)
+                {
+                    string retval = null;
+                    if (value is int)
+                        retval = ((int)value).ToString();
+                    else if (value is float)
+                        retval = String.Format("new LSL_Types.LSLFloat({0})",((float)value).ToString());
+                    else if (value is string)
+                        retval = String.Format("new LSL_Types.LSLString(\"{0}\")",((string)value));
+                    else if (value is OpenMetaverse.UUID)
+                        retval = String.Format("new LSL_Types.key(\"{0}\")",((OpenMetaverse.UUID)value).ToString());
+                    else if (value is OpenMetaverse.Vector3)
+                        retval = String.Format("new LSL_Types.Vector3(\"{0}\")",((OpenMetaverse.Vector3)value).ToString());
+                    else if (value is OpenMetaverse.Quaternion)
+                        retval = String.Format("new LSL_Types.Quaternion(\"{0}\")",((OpenMetaverse.Quaternion)value).ToString());
+                    else retval = id;
+                    
+                    return Generate(retval, s);
+                }
+            }
+            return Generate(CheckName(id), s);
+        }
+        /// <summary>
        /// Generates the code for a FunctionCall node.
        /// </summary>
        /// <param name="fc">The FunctionCall node.</param>
diff --git a/OpenSim/Region/ScriptEngine/Shared/Helpers.cs b/OpenSim/Region/ScriptEngine/Shared/Helpers.cs
index 5c9d30f..9e5fb24 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Helpers.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Helpers.cs
@@ -36,6 +36,7 @@ using OpenSim.Framework;
 using OpenSim.Region.CoreModules;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Services.Interfaces;
+using OpenSim.Region.Framework.Interfaces;
 namespace OpenSim.Region.ScriptEngine.Shared
 {
@@ -83,6 +84,12 @@ namespace OpenSim.Region.ScriptEngine.Shared
    public class DetectParams
    {
+        public const int AGENT = 1;
+        public const int ACTIVE = 2;
+        public const int PASSIVE = 4;
+        public const int SCRIPTED = 8;
+        public const int OS_NPC = 0x01000000;
        public DetectParams()
        {
            Key = UUID.Zero;
@@ -199,8 +206,27 @@ namespace OpenSim.Region.ScriptEngine.Shared
                Type = 0x01; // Avatar
                if (presence.PresenceType == PresenceType.Npc)
                    Type = 0x20;
+                // Cope Impl. We don't use OS_NPC.
+                //if (presence.PresenceType != PresenceType.Npc)
+                //{
+                //    Type = AGENT;
+                //}
+                //else
+                //{
+                //    Type = OS_NPC;
+                //    INPCModule npcModule = scene.RequestModuleInterface<INPCModule>();
+                //    INPC npcData = npcModule.GetNPC(presence.UUID, presence.Scene);
+                //    if (npcData.SenseAsAgent)
+                //    {
+                //        Type |= AGENT;
+                //    }
+                //}
                if (presence.Velocity != Vector3.Zero)
-                    Type |= 0x02; // Active
+                    Type |= ACTIVE;
                Group = presence.ControllingClient.ActiveGroupId;
@@ -215,15 +241,15 @@ namespace OpenSim.Region.ScriptEngine.Shared
            Name = part.Name;
            Owner = part.OwnerID;
            if (part.Velocity == Vector3.Zero)
-                Type = 0x04; // Passive
+                Type = PASSIVE;
            else
-                Type = 0x02; // Passive
+                Type = ACTIVE;
            foreach (SceneObjectPart p in part.ParentGroup.Parts)
            {
                if (p.Inventory.ContainsScripts())
                {
-                    Type |= 0x08; // Scripted
+                    Type |= SCRIPTED; // Scripted
                    break;
                }
            }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs b/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
index 983eed2..771db0c 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
@@ -312,11 +312,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                            part.SetScriptEvents(ItemID,
                                    (int)m_Script.GetStateEventFlags(State));
-                            Running = false;
+                            if (!Running)
-                            if (ShuttingDown)
                                m_startOnInit = false;
+                            Running = false;
                            // we get new rez events on sim restart, too
                            // but if there is state, then we fire the change
                            // event
@@ -352,12 +352,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
        public void Init()
        {
-            if (!m_startOnInit)
+            if (ShuttingDown)
                return;
            if (m_startedFromSavedState) 
            {
-                Start();
+                if (m_startOnInit)
+                    Start();
                if (m_postOnRez) 
                {
                    PostEvent(new EventParams("on_rez",
@@ -389,7 +390,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
            }
            else 
            {
-                Start();
+                if (m_startOnInit)
+                    Start();
                PostEvent(new EventParams("state_entry",
                                          new Object[0], new DetectParams[0]));
                if (m_postOnRez) 
diff --git a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
index 35a0200..f6cb7df 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
@@ -109,6 +109,8 @@ namespace OpenSim.Region.ScriptEngine.XEngine
        private bool m_KillTimedOutScripts;
        private string m_ScriptEnginesPath = null;
+        private ExpiringCache<UUID, bool> m_runFlags = new ExpiringCache<UUID, bool>();
        /// <summary>
        /// Is the entire simulator in the process of shutting down?
        /// </summary>
@@ -715,6 +717,10 @@ namespace OpenSim.Region.ScriptEngine.XEngine
            m_Scene.EventManager.OnGetScriptRunning += OnGetScriptRunning;
            m_Scene.EventManager.OnShutdown += OnShutdown;
+            // If region ready has been triggered, then the region had no scripts to compile and completed its other
+            // work.
+            m_Scene.EventManager.OnRegionReadyStatusChange += s => { if (s.Ready) m_InitialStartup = false; };
            if (m_SleepTime > 0)
            {
                m_ThreadPool.QueueWorkItem(new WorkItemCallback(this.DoMaintenance),
@@ -1269,7 +1275,15 @@ namespace OpenSim.Region.ScriptEngine.XEngine
            if (instance!=null) 
                instance.Init();
-            
+            bool runIt;
+            if (m_runFlags.TryGetValue(itemID, out runIt))
+            {
+                if (!runIt)
+                    StopScript(itemID);
+                m_runFlags.Remove(itemID);
+            }
            return true;
        }
@@ -1660,6 +1674,8 @@ namespace OpenSim.Region.ScriptEngine.XEngine
            IScriptInstance instance = GetInstance(itemID);
            if (instance != null)
                instance.Start();
+            else
+                m_runFlags.AddOrUpdate(itemID, true, 240);
        }
        public void StopScript(UUID itemID)
@@ -1671,6 +1687,10 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                // cause issues on mono 2.6, 2.10 and possibly later where locks are not released properly on abort.
                instance.Stop(1000);
            }
+            else
+            {
+                m_runFlags.AddOrUpdate(itemID, false, 240);
+            }
        }
        public DetectParams GetDetectParams(UUID itemID, int idx)
diff --git a/OpenSim/Region/UserStatistics/ActiveConnectionsAJAX.cs b/OpenSim/Region/UserStatistics/ActiveConnectionsAJAX.cs
index dcbd717..3243a9a 100644
--- a/OpenSim/Region/UserStatistics/ActiveConnectionsAJAX.cs
+++ b/OpenSim/Region/UserStatistics/ActiveConnectionsAJAX.cs
@@ -34,7 +34,7 @@ using Mono.Data.SqliteClient;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Region.Framework.Scenes;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 namespace OpenSim.Region.UserStatistics
 {
diff --git a/OpenSim/Region/UserStatistics/Default_Report.cs b/OpenSim/Region/UserStatistics/Default_Report.cs
index 0e17630..cdc615c 100644
--- a/OpenSim/Region/UserStatistics/Default_Report.cs
+++ b/OpenSim/Region/UserStatistics/Default_Report.cs
@@ -33,7 +33,7 @@ using System.Text;
 using Mono.Data.SqliteClient;
 using OpenMetaverse;
 using OpenSim.Region.Framework.Scenes;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 namespace OpenSim.Region.UserStatistics
diff --git a/OpenSim/Region/UserStatistics/LogLinesAJAX.cs b/OpenSim/Region/UserStatistics/LogLinesAJAX.cs
index 811baba..74de46b 100644
--- a/OpenSim/Region/UserStatistics/LogLinesAJAX.cs
+++ b/OpenSim/Region/UserStatistics/LogLinesAJAX.cs
@@ -34,7 +34,7 @@ using System.Text.RegularExpressions;
 using Mono.Data.SqliteClient;
 using OpenMetaverse;
 using OpenSim.Region.Framework.Scenes;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 namespace OpenSim.Region.UserStatistics
 {
diff --git a/OpenSim/Region/UserStatistics/SimStatsAJAX.cs b/OpenSim/Region/UserStatistics/SimStatsAJAX.cs
index 8c04e71..28051fb 100644
--- a/OpenSim/Region/UserStatistics/SimStatsAJAX.cs
+++ b/OpenSim/Region/UserStatistics/SimStatsAJAX.cs
@@ -33,7 +33,7 @@ using System.Text;
 using Mono.Data.SqliteClient;
 using OpenMetaverse;
 using OpenSim.Region.Framework.Scenes;
-using OpenSim.Framework.Statistics;
+using OpenSim.Framework.Monitoring;
 namespace OpenSim.Region.UserStatistics
 {
diff --git a/OpenSim/Services/Connectors/Inventory/XInventoryServicesConnector.cs b/OpenSim/Services/Connectors/Inventory/XInventoryServicesConnector.cs
index 9d96703..44f5e01 100644
--- a/OpenSim/Services/Connectors/Inventory/XInventoryServicesConnector.cs
+++ b/OpenSim/Services/Connectors/Inventory/XInventoryServicesConnector.cs
@@ -122,7 +122,7 @@ namespace OpenSim.Services.Connectors
            }
            catch (Exception e)
            {
-                m_log.DebugFormat("[XINVENTORY CONNECTOR STUB]: Exception unwrapping folder list: {0}", e.Message);
+                m_log.Error("[XINVENTORY SERVICES CONNECTOR]: Exception unwrapping folder list: ", e);
            }
            return fldrs;
@@ -191,7 +191,7 @@ namespace OpenSim.Services.Connectors
            }
            catch (Exception e)
            {
-                m_log.DebugFormat("[XINVENTORY CONNECTOR STUB]: Exception in GetFolderContent: {0}", e.Message);
+                m_log.WarnFormat("[XINVENTORY SERVICES CONNECTOR]: Exception in GetFolderContent: {0}", e.Message);
            }
            return inventory;
@@ -432,7 +432,7 @@ namespace OpenSim.Services.Connectors
            }
            catch (Exception e)
            {
-                m_log.DebugFormat("[XINVENTORY CONNECTOR STUB]: Exception in GetItem: {0}", e.Message);
+                m_log.Error("[XINVENTORY SERVICES CONNECTOR]: Exception in GetItem: ", e);
            }
            return null;
@@ -456,7 +456,7 @@ namespace OpenSim.Services.Connectors
            }
            catch (Exception e)
            {
-                m_log.DebugFormat("[XINVENTORY CONNECTOR STUB]: Exception in GetFolder: {0}", e.Message);
+                m_log.Error("[XINVENTORY SERVICES CONNECTOR]: Exception in GetFolder: ", e);
            }
            return null;
@@ -474,7 +474,7 @@ namespace OpenSim.Services.Connectors
            List<InventoryItemBase> items = new List<InventoryItemBase>();
-            foreach (Object o in ret.Values) // getting the values directly, we don't care about the keys item_i
+            foreach (Object o in ((Dictionary<string,object>)ret["ITEMS"]).Values)
                items.Add(BuildItem((Dictionary<string, object>)o));
            return items;
@@ -525,7 +525,7 @@ namespace OpenSim.Services.Connectors
            }
            catch (Exception e)
            {
-                m_log.DebugFormat("[XINVENTORY CONNECTOR STUB]: Exception in GetUserInventory: {0}", e.Message);
+                m_log.Error("[XINVENTORY SERVICES CONNECTOR]: Exception in GetUserInventory: ", e);
            }
            return inventory;
@@ -574,7 +574,7 @@ namespace OpenSim.Services.Connectors
            }
            catch (Exception e)
            {
-                m_log.DebugFormat("[XINVENTORY CONNECTOR STUB]: Exception building folder: {0}", e.Message);
+                m_log.Error("[XINVENTORY SERVICES CONNECTOR]: Exception building folder: ", e);
            }
            return folder;
@@ -613,11 +613,10 @@ namespace OpenSim.Services.Connectors
            }
            catch (Exception e)
            {
-                m_log.DebugFormat("[XINVENTORY CONNECTOR STUB]: Exception building item: {0}", e.Message);
+                m_log.Error("[XINVENTORY CONNECTOR]: Exception building item: ", e);
            }
            return item;
        }
    }
-}
+}
+\ No newline at end of file
diff --git a/OpenSim/Tests/Common/Helpers/SceneHelpers.cs b/OpenSim/Tests/Common/Helpers/SceneHelpers.cs
index 769de83..7598cc3 100644
--- a/OpenSim/Tests/Common/Helpers/SceneHelpers.cs
+++ b/OpenSim/Tests/Common/Helpers/SceneHelpers.cs
@@ -190,7 +190,7 @@ namespace OpenSim.Tests.Common
                = physicsPluginManager.GetPhysicsScene("basicphysics", "ZeroMesher", new IniConfigSource(), "test");
            testScene.RegionInfo.EstateSettings = new EstateSettings();
-            testScene.LoginsDisabled = false;
+            testScene.LoginsEnabled = true;
            testScene.RegisterRegionWithGrid();
            SceneManager.Add(testScene);
diff --git a/OpenSim/Tests/Common/Helpers/TaskInventoryHelpers.cs b/OpenSim/Tests/Common/Helpers/TaskInventoryHelpers.cs
index fba03ab..0a2b30a 100644
--- a/OpenSim/Tests/Common/Helpers/TaskInventoryHelpers.cs
+++ b/OpenSim/Tests/Common/Helpers/TaskInventoryHelpers.cs
@@ -80,8 +80,26 @@ namespace OpenSim.Tests.Common
        /// <returns>The item that was added</returns>
        public static TaskInventoryItem AddScript(Scene scene, SceneObjectPart part)
        {
+            return AddScript(scene, part, "scriptItem", "default { state_entry() { llSay(0, \"Hello World\"); } }");
+        }
+        /// <summary>
+        /// Add a simple script to the given part.
+        /// </summary>
+        /// <remarks>
+        /// TODO: Accept input for item and asset IDs to avoid mysterious script failures that try to use any of these
+        /// functions more than once in a test.
+        /// </remarks>
+        /// <param name="scene"></param>
+        /// <param name="part"></param>
+        /// <param name="scriptName">Name of the script to add</param>
+        /// <param name="scriptSource">LSL script source</param>
+        /// <returns>The item that was added</returns>
+        public static TaskInventoryItem AddScript(
+            Scene scene, SceneObjectPart part, string scriptName, string scriptSource)
+        {
            AssetScriptText ast = new AssetScriptText();
-            ast.Source = "default { state_entry() { llSay(0, \"Hello World\"); } }";
+            ast.Source = scriptSource;
            ast.Encode();
            UUID assetUuid = new UUID("00000000-0000-0000-1000-000000000000");
@@ -91,7 +109,7 @@ namespace OpenSim.Tests.Common
            scene.AssetService.Store(asset);
            TaskInventoryItem item
                = new TaskInventoryItem 
-                    { Name = "scriptItem", AssetID = assetUuid, ItemID = itemUuid,
+                    { Name = scriptName, AssetID = assetUuid, ItemID = itemUuid,
                      Type = (int)AssetType.LSLText, InvType = (int)InventoryType.LSL };
            part.Inventory.AddInventoryItem(item, true);
            
diff --git a/OpenSim/Tools/pCampBot/Behaviours/GrabbingBehaviour.cs b/OpenSim/Tools/pCampBot/Behaviours/GrabbingBehaviour.cs
index 701881e..66a336a 100644
--- a/OpenSim/Tools/pCampBot/Behaviours/GrabbingBehaviour.cs
+++ b/OpenSim/Tools/pCampBot/Behaviours/GrabbingBehaviour.cs
@@ -47,6 +47,9 @@ namespace pCampBot
        {
            Dictionary<UUID, Primitive> objects = Bot.Objects;
+            if (objects.Count <= 0)
+                return;
            Primitive prim = objects.ElementAt(Bot.Random.Next(0, objects.Count - 1)).Value;
            // This appears to be a typical message sent when a viewer user clicks a clickable object