Merge branch 'master' of ssh://opensimulator.org/var/git/opensim

13 files changed, 394 insertions, 53 deletions

diff --git a/OpenSim/ApplicationPlugins/RegionModulesController/RegionModulesControllerPlugin.cs b/OpenSim/ApplicationPlugins/RegionModulesController/RegionModulesControllerPlugin.cs
index 510be37..e03483a 100644
--- a/OpenSim/ApplicationPlugins/RegionModulesController/RegionModulesControllerPlugin.cs
+++ b/OpenSim/ApplicationPlugins/RegionModulesController/RegionModulesControllerPlugin.cs
@@ -32,6 +32,7 @@ using log4net;
 using Mono.Addins;
 using Nini.Config;
 using OpenSim;
+using OpenSim.Framework;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
 
@@ -45,6 +46,12 @@ namespace OpenSim.ApplicationPlugins.RegionModulesController
                 LogManager.GetLogger(
                 MethodBase.GetCurrentMethod().DeclaringType);
 
+        /// <summary>
+        /// Controls whether we load modules from Mono.Addins.
+        /// </summary>
+        /// <remarks>For debug purposes.  Defaults to true.</remarks>
+        public bool LoadModulesFromAddins { get; set; }
+
         // Config access
         private OpenSimBase m_openSim;
 
@@ -61,6 +68,11 @@ namespace OpenSim.ApplicationPlugins.RegionModulesController
         private List<ISharedRegionModule> m_sharedInstances =
                 new List<ISharedRegionModule>();
 
+        public RegionModulesControllerPlugin()
+        {
+            LoadModulesFromAddins = true;
+        }
+
 #region IApplicationPlugin implementation
         
         public void Initialise (OpenSimBase openSim)
@@ -69,6 +81,9 @@ namespace OpenSim.ApplicationPlugins.RegionModulesController
             m_openSim.ApplicationRegistry.RegisterInterface<IRegionModulesController>(this);
             m_log.DebugFormat("[REGIONMODULES]: Initializing...");
 
+            if (!LoadModulesFromAddins)
+                return;
+
             // Who we are
             string id = AddinManager.CurrentAddin.Id;
 
@@ -88,40 +103,8 @@ namespace OpenSim.ApplicationPlugins.RegionModulesController
             Dictionary<RuntimeAddin, IList<int>> loadedModules = new Dictionary<RuntimeAddin, IList<int>>();
 
             // Scan modules and load all that aren't disabled
-            foreach (TypeExtensionNode node in
-                    AddinManager.GetExtensionNodes("/OpenSim/RegionModules"))
-            {
-                IList<int> loadedModuleData;
-
-                if (!loadedModules.ContainsKey(node.Addin))
-                    loadedModules.Add(node.Addin, new List<int> { 0, 0, 0 });
-
-                loadedModuleData = loadedModules[node.Addin];
-                      
-                if (node.Type.GetInterface(typeof(ISharedRegionModule).ToString()) != null)
-                {
-                    if (CheckModuleEnabled(node, modulesConfig))
-                    {
-                        m_log.DebugFormat("[REGIONMODULES]: Found shared region module {0}, class {1}", node.Id, node.Type);
-                        m_sharedModules.Add(node);
-                        loadedModuleData[0]++;
-                    }
-                }
-                else if (node.Type.GetInterface(typeof(INonSharedRegionModule).ToString()) != null)
-                {
-                    if (CheckModuleEnabled(node, modulesConfig))
-                    {
-                        m_log.DebugFormat("[REGIONMODULES]: Found non-shared region module {0}, class {1}", node.Id, node.Type);
-                        m_nonSharedModules.Add(node);
-                        loadedModuleData[1]++;
-                    }
-                }
-                else
-                {
-                    m_log.WarnFormat("[REGIONMODULES]: Found unknown type of module {0}, class {1}", node.Id, node.Type);
-                    loadedModuleData[2]++;
-                }
-            }
+            foreach (TypeExtensionNode node in AddinManager.GetExtensionNodes("/OpenSim/RegionModules"))
+                AddNode(node, modulesConfig, loadedModules);
 
             foreach (KeyValuePair<RuntimeAddin, IList<int>> loadedModuleData in loadedModules)
             {
@@ -194,6 +177,41 @@ namespace OpenSim.ApplicationPlugins.RegionModulesController
 
 #region IPlugin implementation
 
+        private void AddNode(
+            TypeExtensionNode node, IConfig modulesConfig, Dictionary<RuntimeAddin, IList<int>> loadedModules)
+        {
+            IList<int> loadedModuleData;
+
+            if (!loadedModules.ContainsKey(node.Addin))
+                loadedModules.Add(node.Addin, new List<int> { 0, 0, 0 });
+
+            loadedModuleData = loadedModules[node.Addin];
+
+            if (node.Type.GetInterface(typeof(ISharedRegionModule).ToString()) != null)
+            {
+                if (CheckModuleEnabled(node, modulesConfig))
+                {
+                    m_log.DebugFormat("[REGIONMODULES]: Found shared region module {0}, class {1}", node.Id, node.Type);
+                    m_sharedModules.Add(node);
+                    loadedModuleData[0]++;
+                }
+            }
+            else if (node.Type.GetInterface(typeof(INonSharedRegionModule).ToString()) != null)
+            {
+                if (CheckModuleEnabled(node, modulesConfig))
+                {
+                    m_log.DebugFormat("[REGIONMODULES]: Found non-shared region module {0}, class {1}", node.Id, node.Type);
+                    m_nonSharedModules.Add(node);
+                    loadedModuleData[1]++;
+                }
+            }
+            else
+            {
+                m_log.WarnFormat("[REGIONMODULES]: Found unknown type of module {0}, class {1}", node.Id, node.Type);
+                loadedModuleData[2]++;
+            }
+        }
+
         // We don't do that here
         //
         public void Initialise ()
@@ -215,6 +233,7 @@ namespace OpenSim.ApplicationPlugins.RegionModulesController
                 m_sharedInstances[0].Close();
                 m_sharedInstances.RemoveAt(0);
             }
+
             m_sharedModules.Clear();
             m_nonSharedModules.Clear();
         }
diff --git a/OpenSim/Framework/Servers/BaseOpenSimServer.cs b/OpenSim/Framework/Servers/BaseOpenSimServer.cs
index 54e6061..828a852 100644
--- a/OpenSim/Framework/Servers/BaseOpenSimServer.cs
+++ b/OpenSim/Framework/Servers/BaseOpenSimServer.cs
@@ -57,6 +57,11 @@ namespace OpenSim.Framework.Servers
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
         /// <summary>
+        /// Used by tests to suppress Environment.Exit(0) so that post-run operations are possible.
+        /// </summary>
+        public bool SuppressExit { get; set; }
+
+        /// <summary>
         /// This will control a periodic log printout of the current 'show stats' (if they are active) for this
         /// server.
         /// </summary>
@@ -109,7 +114,8 @@ namespace OpenSim.Framework.Servers
 
             base.ShutdownSpecific();
 
-            Environment.Exit(0);
+            if (!SuppressExit)
+                Environment.Exit(0);
         }
         
         /// <summary>
diff --git a/OpenSim/Framework/Util.cs b/OpenSim/Framework/Util.cs
index 740e55a..729281c 100644
--- a/OpenSim/Framework/Util.cs
+++ b/OpenSim/Framework/Util.cs
@@ -1964,10 +1964,15 @@ namespace OpenSim.Framework
         {
             if (maxThreads < 2)
                 throw new ArgumentOutOfRangeException("maxThreads", "maxThreads must be greater than 2");
+
             if (minThreads > maxThreads || minThreads < 2)
                 throw new ArgumentOutOfRangeException("minThreads", "minThreads must be greater than 2 and less than or equal to maxThreads");
+
             if (m_ThreadPool != null)
-                throw new InvalidOperationException("SmartThreadPool is already initialized");
+            {
+                m_log.Warn("SmartThreadPool is already initialized.  Ignoring request.");
+                return;
+            }
 
             STPStartInfo startInfo = new STPStartInfo();
             startInfo.ThreadPoolName = "Util";
diff --git a/OpenSim/Region/Application/OpenSimBase.cs b/OpenSim/Region/Application/OpenSimBase.cs
index 4c1914a..d2dce24 100644
--- a/OpenSim/Region/Application/OpenSimBase.cs
+++ b/OpenSim/Region/Application/OpenSimBase.cs
@@ -71,6 +71,20 @@ namespace OpenSim
         // OpenSim.ini Section name for ESTATES Settings
         public const string ESTATE_SECTION_NAME = "Estates";
 
+        /// <summary>
+        /// Allow all plugin loading to be disabled for tests/debug.
+        /// </summary>
+        /// <remarks>
+        /// true by default
+        /// </remarks>
+        public bool EnableInitialPluginLoad { get; set; }
+
+        /// <summary>
+        /// Control whether we attempt to load an estate data service.
+        /// </summary>
+        /// <remarks>For tests/debugging</remarks>
+        public bool LoadEstateDataService { get; set; }
+
         protected string proxyUrl;
         protected int proxyOffset = 0;
         
@@ -96,7 +110,7 @@ namespace OpenSim
 
         public ConsoleCommand CreateAccount = null;
 
-        protected List<IApplicationPlugin> m_plugins = new List<IApplicationPlugin>();
+        public List<IApplicationPlugin> m_plugins = new List<IApplicationPlugin>();
 
         /// <value>
         /// The config information passed into the OpenSimulator region server.
@@ -135,6 +149,8 @@ namespace OpenSim
         /// <param name="configSource"></param>
         public OpenSimBase(IConfigSource configSource) : base()
         {
+            EnableInitialPluginLoad = true;
+            LoadEstateDataService = true;
             LoadConfigSettings(configSource);
         }
 
@@ -236,20 +252,25 @@ namespace OpenSim
             if (String.IsNullOrEmpty(module))
                 throw new Exception("Configuration file is missing the LocalServiceModule parameter in the [EstateDataStore] or [EstateService] section");
 
-            m_estateDataService = ServerUtils.LoadPlugin<IEstateDataService>(module, new object[] { Config });
-            if (m_estateDataService == null)
-                throw new Exception(
-                    string.Format(
-                        "Could not load an IEstateDataService implementation from {0}, as configured in the LocalServiceModule parameter of the [EstateDataStore] config section.", 
-                        module));
+            if (LoadEstateDataService)
+            {
+                m_estateDataService = ServerUtils.LoadPlugin<IEstateDataService>(module, new object[] { Config });
+                if (m_estateDataService == null)
+                    throw new Exception(
+                        string.Format(
+                            "Could not load an IEstateDataService implementation from {0}, as configured in the LocalServiceModule parameter of the [EstateDataStore] config section.", 
+                            module));
+            }
 
             base.StartupSpecific();
 
-            LoadPlugins();
+            if (EnableInitialPluginLoad)
+                LoadPlugins();
+
+            // We still want to post initalize any plugins even if loading has been disabled since a test may have
+            // inserted them manually.
             foreach (IApplicationPlugin plugin in m_plugins)
-            {
                 plugin.PostInitialise();
-            }
 
             if (m_console != null)
                 AddPluginCommands(m_console);
@@ -874,6 +895,9 @@ namespace OpenSim
             try
             {
                 SceneManager.Close();
+
+                foreach (IApplicationPlugin plugin in m_plugins)
+                    plugin.Dispose();
             }
             catch (Exception e)
             {
diff --git a/OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs b/OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs
index 9b0e1f4..ebec9d2 100644
--- a/OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs
+++ b/OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs
@@ -316,9 +316,12 @@ namespace OpenSim.Region.CoreModules.Asset
         /// </summary>
         public void Close()
         {
-            m_enabled = false;
-            m_cache.Clear();
-            m_cache = null;
+            if (m_enabled)
+            {
+                m_enabled = false;
+                m_cache.Clear();
+                m_cache = null;
+            }
         }
 
         /// <summary>
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index eff24f8..3957ba6 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -192,7 +192,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// <summary>
         /// Maximum value of the size of a physical prim in each axis
         /// </summary>
-        public float m_maxPhys = 10;
+        public float m_maxPhys = 64;
 
         /// <summary>
         /// Max prims an object will hold
@@ -201,7 +201,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         public bool m_clampPrimSize;
         public bool m_trustBinaries;
-        public bool m_allowScriptCrossings;
+        public bool m_allowScriptCrossings = true;
         public bool m_useFlySlow;
         public bool m_useTrashOnDelete = true;
 
@@ -1894,6 +1894,7 @@ namespace OpenSim.Region.Framework.Scenes
                                 RegionInfo.RegionID,
                                 RegionInfo.RegionLocX, RegionInfo.RegionLocY,
                                 RegionInfo.RegionSizeX, RegionInfo.RegionSizeY);
+
             if (error != String.Empty)
                 throw new Exception(error);
         }
diff --git a/OpenSim/Region/Framework/Scenes/Tests/SharedRegionModuleTests.cs b/OpenSim/Region/Framework/Scenes/Tests/SharedRegionModuleTests.cs
new file mode 100644
index 0000000..eeda84f
--- /dev/null
+++ b/OpenSim/Region/Framework/Scenes/Tests/SharedRegionModuleTests.cs
@@ -0,0 +1,249 @@
+/*
+ * 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.Net;
+using Mono.Addins;
+using Nini.Config;
+using NUnit.Framework;
+using OpenMetaverse;
+using OpenSim;
+using OpenSim.ApplicationPlugins.RegionModulesController;
+using OpenSim.Framework;
+using OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Tests.Common;
+
+namespace OpenSim.Region.Framework.Scenes.Tests
+{
+    public class SharedRegionModuleTests : OpenSimTestCase
+    {
+//        [Test]
+        public void TestLifecycle()
+        {
+            TestHelpers.InMethod();
+            TestHelpers.EnableLogging();
+
+            UUID estateOwnerId = TestHelpers.ParseTail(0x1);
+            UUID regionId = TestHelpers.ParseTail(0x10);
+
+            IConfigSource configSource = new IniConfigSource();
+            configSource.AddConfig("Startup");
+            configSource.AddConfig("Modules");
+
+//            // We use this to skip estate questions
+            // Turns out not to be needed is estate owner id is pre-set in region information.
+//            IConfig estateConfig = configSource.AddConfig(OpenSimBase.ESTATE_SECTION_NAME);
+//            estateConfig.Set("DefaultEstateOwnerName", "Zaphod Beeblebrox");
+//            estateConfig.Set("DefaultEstateOwnerUUID", estateOwnerId);
+//            estateConfig.Set("DefaultEstateOwnerEMail", "zaphod@galaxy.com");
+//            estateConfig.Set("DefaultEstateOwnerPassword", "two heads");
+
+            // For grid servic
+            configSource.AddConfig("GridService");
+            configSource.Configs["Modules"].Set("GridServices", "LocalGridServicesConnector");
+            configSource.Configs["GridService"].Set("StorageProvider", "OpenSim.Data.Null.dll:NullRegionData");
+            configSource.Configs["GridService"].Set("LocalServiceModule", "OpenSim.Services.GridService.dll:GridService");
+            configSource.Configs["GridService"].Set("ConnectionString", "!static");
+
+            LocalGridServicesConnector gridService = new LocalGridServicesConnector();
+//
+            OpenSim sim = new OpenSim(configSource);
+
+            sim.SuppressExit = true;
+            sim.EnableInitialPluginLoad = false;
+            sim.LoadEstateDataService = false;
+            sim.NetServersInfo.HttpListenerPort = 0;
+
+            IRegistryCore reg = sim.ApplicationRegistry;
+
+            RegionInfo ri = new RegionInfo();
+            ri.RegionID = regionId;
+            ri.EstateSettings.EstateOwner = estateOwnerId;
+            ri.InternalEndPoint = new IPEndPoint(0, 0);
+
+            MockRegionModulesControllerPlugin rmcp = new MockRegionModulesControllerPlugin();
+            sim.m_plugins = new List<IApplicationPlugin>() { rmcp };
+            reg.RegisterInterface<IRegionModulesController>(rmcp);
+
+            // XXX: Have to initialize directly for now
+            rmcp.Initialise(sim);
+
+            rmcp.AddNode(gridService);
+
+            TestSharedRegion tsr = new TestSharedRegion();
+            rmcp.AddNode(tsr);
+
+            // FIXME: Want to use the real one eventually but this is currently directly tied into Mono.Addins
+            // which has been written in such a way that makes it impossible to use for regression tests.
+//            RegionModulesControllerPlugin rmcp = new RegionModulesControllerPlugin();
+//            rmcp.LoadModulesFromAddins = false;
+////            reg.RegisterInterface<IRegionModulesController>(rmcp);
+//            rmcp.Initialise(sim);
+//            rmcp.PostInitialise();           
+//            TypeExtensionNode node = new TypeExtensionNode();
+//            node.
+//            rmcp.AddNode(node, configSource.Configs["Modules"], new Dictionary<RuntimeAddin, IList<int>>());
+
+            sim.Startup();
+            IScene scene;
+            sim.CreateRegion(ri, out scene);
+
+            sim.Shutdown();
+
+            List<string> co = tsr.CallOrder;
+            int expectedEventCount = 6;
+
+            Assert.AreEqual(
+                expectedEventCount, 
+                co.Count, 
+                "Expected {0} events but only got {1} ({2})", 
+                expectedEventCount, co.Count, string.Join(",", co));
+            Assert.AreEqual("Initialise",       co[0]);
+            Assert.AreEqual("PostInitialise",   co[1]);
+            Assert.AreEqual("AddRegion",        co[2]);
+            Assert.AreEqual("RegionLoaded",     co[3]);
+            Assert.AreEqual("RemoveRegion",     co[4]);
+            Assert.AreEqual("Close",            co[5]);
+        }
+    }
+
+    class TestSharedRegion : ISharedRegionModule
+    {
+        // FIXME: Should really use MethodInfo
+        public List<string> CallOrder = new List<string>();
+                
+        public string Name { get { return "TestSharedRegion"; } }
+
+        public Type ReplaceableInterface { get { return null; } }
+
+        public void PostInitialise()
+        {
+            CallOrder.Add("PostInitialise");
+        }
+
+        public void Initialise(IConfigSource source)
+        {
+            CallOrder.Add("Initialise");
+        }
+
+        public void Close()
+        {
+            CallOrder.Add("Close");
+        }
+
+        public void AddRegion(Scene scene)
+        {
+            CallOrder.Add("AddRegion");
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            CallOrder.Add("RemoveRegion");
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            CallOrder.Add("RegionLoaded");
+        }
+    }
+
+    class MockRegionModulesControllerPlugin : IRegionModulesController, IApplicationPlugin
+    {
+        // List of shared module instances, for adding to Scenes
+        private List<ISharedRegionModule> m_sharedInstances = new List<ISharedRegionModule>();
+
+        // Config access
+        private OpenSimBase m_openSim;
+
+        public string Version { get { return "0"; } }
+        public string Name { get { return "MockRegionModulesControllerPlugin"; } }
+
+        public void Initialise() {}
+
+        public void Initialise(OpenSimBase sim) 
+        {
+            m_openSim = sim;
+        }
+
+        /// <summary>
+        /// Called when the application loading is completed 
+        /// </summary>
+        public void PostInitialise()
+        {
+            foreach (ISharedRegionModule module in m_sharedInstances)
+                module.PostInitialise();
+        }
+
+        public void AddRegionToModules(Scene scene)
+        {
+            List<ISharedRegionModule> sharedlist = new List<ISharedRegionModule>();
+
+            foreach (ISharedRegionModule module in m_sharedInstances)
+            {
+                module.AddRegion(scene);
+                scene.AddRegionModule(module.Name, module);
+
+                sharedlist.Add(module);
+            }
+
+            foreach (ISharedRegionModule module in sharedlist)
+            {
+                module.RegionLoaded(scene);
+            }
+        }
+
+        public void RemoveRegionFromModules(Scene scene)
+        {
+            foreach (IRegionModuleBase module in scene.RegionModules.Values)
+            {
+//                m_log.DebugFormat("[REGIONMODULE]: Removing scene {0} from module {1}",
+//                                  scene.RegionInfo.RegionName, module.Name);
+                module.RemoveRegion(scene);
+            }
+
+            scene.RegionModules.Clear();
+        }       
+        
+        public void AddNode(ISharedRegionModule module)
+        {
+            m_sharedInstances.Add(module);
+            module.Initialise(m_openSim.ConfigSource.Source);
+        }
+
+        public void Dispose()
+        {
+            // We expect that all regions have been removed already
+            while (m_sharedInstances.Count > 0)
+            {
+                m_sharedInstances[0].Close();
+                m_sharedInstances.RemoveAt(0);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSActorAvatarMove.cs b/OpenSim/Region/Physics/BulletSPlugin/BSActorAvatarMove.cs
index 42381ef..14518e9 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSActorAvatarMove.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSActorAvatarMove.cs
@@ -205,6 +205,17 @@ public class BSActorAvatarMove : BSActor
                     // Flying and not colliding and velocity nearly zero.
                     m_controllingPrim.ZeroMotion(true /* inTaintTime */);
                 }
+                else
+                {
+                    //We are falling but are not touching any keys make sure not falling too fast
+                    if (m_controllingPrim.RawVelocity.Z < BSParam.AvatarTerminalVelocity)
+                    {
+
+                        OMV.Vector3 slowingForce = new OMV.Vector3(0f, 0f, BSParam.AvatarTerminalVelocity - m_controllingPrim.RawVelocity.Z) * m_controllingPrim.Mass;
+                        m_physicsScene.PE.ApplyCentralImpulse(m_controllingPrim.PhysBody, slowingForce);
+                    }
+
+                }
             }
 
             m_physicsScene.DetailLog("{0},BSCharacter.MoveMotor,taint,stopping,target={1},colliding={2}",
@@ -252,8 +263,17 @@ public class BSActorAvatarMove : BSActor
                 }
                 else
                 {
-                    // Since we're not affected by anything, whatever vertical motion the avatar has, continue that.
-                    stepVelocity.Z = m_controllingPrim.RawVelocity.Z;
+                    
+                    // Since we're not affected by anything, the avatar must be falling and we do not want that to be too fast.
+                    if (m_controllingPrim.RawVelocity.Z < BSParam.AvatarTerminalVelocity)
+                    {
+                        
+                        stepVelocity.Z = BSParam.AvatarTerminalVelocity;
+                    }
+                    else
+                    {
+                        stepVelocity.Z = m_controllingPrim.RawVelocity.Z;
+                    }
                 }
                 // DetailLog("{0},BSCharacter.MoveMotor,taint,overrideStepZWithWorldZ,stepVel={1}", LocalID, stepVelocity);
             }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
index 042e8a4..8b4df05 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
@@ -138,6 +138,7 @@ public static class BSParam
     public static float AvatarHeightHighFudge { get; private set; }
     public static float AvatarFlyingGroundMargin { get; private set; }
     public static float AvatarFlyingGroundUpForce { get; private set; }
+    public static float AvatarTerminalVelocity { get; private set; }
         public static float AvatarContactProcessingThreshold { get; private set; }
     public static float AvatarStopZeroThreshold { get; private set; }
         public static int AvatarJumpFrames { get; private set; }
@@ -589,6 +590,8 @@ public static class BSParam
             5f ),
         new ParameterDefn<float>("AvatarFlyingGroundUpForce", "Upward force applied to the avatar to keep it at flying ground margin",
             2.0f ),
+        new ParameterDefn<float>("AvatarTerminalVelocity", "Terminal Velocity of falling avatar",
+            -54.0f ),
             new ParameterDefn<float>("AvatarContactProcessingThreshold", "Distance from capsule to check for collisions",
             0.1f ),
             new ParameterDefn<float>("AvatarStopZeroThreshold", "Movement velocity below which avatar is assumed to be stopped",
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
index db3df46..7d80dcb 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
@@ -412,6 +412,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         public const int PRIM_SLICE = 35;
         public const int PRIM_SPECULAR = 36;
         public const int PRIM_NORMAL = 37;
+        public const int PRIM_ALPHA_MODE = 38;
         public const int PRIM_TEXGEN_DEFAULT = 0;
         public const int PRIM_TEXGEN_PLANAR = 1;
 
diff --git a/OpenSim/Tests/Common/OpenSimTestCase.cs b/OpenSim/Tests/Common/OpenSimTestCase.cs
index 3c47faa..c1415af 100644
--- a/OpenSim/Tests/Common/OpenSimTestCase.cs
+++ b/OpenSim/Tests/Common/OpenSimTestCase.cs
@@ -27,6 +27,7 @@
 
 using System;
 using NUnit.Framework;
+using OpenSim.Framework;
 using OpenSim.Framework.Servers;
 
 namespace OpenSim.Tests.Common
diff --git a/bin/OpenSimDefaults.ini b/bin/OpenSimDefaults.ini
index 8b8364c..3f373ce 100644
--- a/bin/OpenSimDefaults.ini
+++ b/bin/OpenSimDefaults.ini
@@ -1038,6 +1038,11 @@
     AvatarHeightMidFudge = 0      ; Adjustment at mid point of avatar height range
     AvatarHeightHighFudge = 0     ; Adjustment at high end of height range
 
+    ; Terminal velocity of a falling avatar
+    ; This is the same http://en.wikipedia.org/wiki/Terminal_velocity#Examples
+    ; negative for a downward speed.
+    AvatarTerminalVelocity = -54
+
     ; Default linkset implmentation
     ; 'Constraint' uses physics constraints to hold linkset together. 'Compound'
     ;    builds a compound shape from the children shapes to create a single physical
diff --git a/prebuild.xml b/prebuild.xml
index 0143e26..e2423ae 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -3185,8 +3185,11 @@
       <Reference name="System.Xml"/>
       <Reference name="System.Drawing"/>
       <Reference name="System.Runtime.Remoting"/>
+      <Reference name="Mono.Addins" path="../../../bin/"/>
       <Reference name="OpenMetaverseTypes" path="../../../bin/"/>
       <Reference name="OpenMetaverse" path="../../../bin/"/>
+      <Reference name="OpenSim"/>
+      <Reference name="OpenSim.ApplicationPlugins.RegionModulesController"/>
       <Reference name="OpenSim.Capabilities"/>
       <Reference name="OpenSim.Data"/>
       <Reference name="OpenSim.Framework"/>
@@ -3195,6 +3198,7 @@
       <Reference name="OpenSim.Framework.Monitoring"/>
       <Reference name="OpenSim.Framework.Servers"/>
       <Reference name="OpenSim.Framework.Servers.HttpServer"/>
+      <Reference name="OpenSim.Region.ClientStack"/>
       <Reference name="OpenSim.Region.ClientStack.LindenCaps"/>
       <Reference name="OpenSim.Region.Framework"/>
       <Reference name="OpenSim.Region.CoreModules"/>