Merge of ubitworkvarnew with opensim/master as of 20150905.

This integrates the OpenSim refactoring to make physics, etc into modules.
AVN physics hasn't been moved to new location.
Does not compile yet.

Merge branch 'osmaster' into mbworknew1

110 files changed, 2540 insertions, 2140 deletions

diff --git a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsPlugin.cs b/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsPlugin.cs
deleted file mode 100644
index 373c7e0..0000000
--- a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsPlugin.cs
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * 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 Nini.Config;
-using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-
-namespace OpenSim.Region.Physics.BasicPhysicsPlugin
-{
-    /// <summary>
-    /// Effectively a physics plugin that simulates no physics at all.
-    /// </summary>
-    public class BasicPhysicsPlugin : IPhysicsPlugin
-    {
-        public BasicPhysicsPlugin()
-        {
-        }
-
-        public bool Init()
-        {
-            return true;
-        }
-
-        public PhysicsScene GetScene(string sceneIdentifier)
-        {
-            return new BasicScene(GetName(), sceneIdentifier);
-        }
-
-        public string GetName()
-        {
-            return ("basicphysics");
-        }
-
-        public void Dispose()
-        {
-        }
-    }
-}
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPlugin.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPlugin.cs
deleted file mode 100644
index 9442854..0000000
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPlugin.cs
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * 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 OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-using OpenMetaverse;
-
-namespace OpenSim.Region.Physics.BulletSPlugin
-{
-    /// <summary>
-    /// Entry for a port of Bullet (http://bulletphysics.org/) to OpenSim.
-    /// This module interfaces to an unmanaged C++ library which makes the
-    /// actual calls into the Bullet physics engine.
-    /// The unmanaged library is found in opensim-libs::trunk/unmanaged/BulletSim/.
-    /// The unmanaged library is compiled and linked statically with Bullet
-    /// to create BulletSim.dll and libBulletSim.so (for both 32 and 64 bit).
-    /// </summary>
-public class BSPlugin : IPhysicsPlugin
-{
-    //private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
-
-    private BSScene _mScene;
-
-    public BSPlugin()
-    {
-    }
-
-    public bool Init()
-    {
-        return true;
-    }
-
-    public PhysicsScene GetScene(String sceneIdentifier)
-    {
-        if (_mScene == null)
-        {
-            _mScene = new BSScene(GetName(), sceneIdentifier);
-        }
-        return (_mScene);
-    }
-
-    public string GetName()
-    {
-        return ("BulletSim");
-    }
-
-    public void Dispose()
-    {
-    }
-}
-}
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
deleted file mode 100644
index 0bace14..0000000
--- a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
+++ /dev/null
@@ -1,1283 +0,0 @@
-/*
- * 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.Linq;
-using System.Reflection;
-using System.Runtime.InteropServices;
-using System.Text;
-using System.Threading;
-using OpenSim.Framework;
-using OpenSim.Framework.Monitoring;
-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;
-
-namespace OpenSim.Region.Physics.BulletSPlugin
-{
-public sealed class BSScene : PhysicsScene, IPhysicsParameters
-{
-    internal static readonly ILog m_log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
-    internal static readonly string LogHeader = "[BULLETS SCENE]";
-
-    // The name of the region we're working for.
-    public string RegionName { get; private set; }
-
-    public string BulletSimVersion = "?";
-
-    // The handle to the underlying managed or unmanaged version of Bullet being used.
-    public string BulletEngineName { get; private set; }
-    public BSAPITemplate PE;
-
-    // If the physics engine is running on a separate thread
-    public Thread m_physicsThread;
-
-    public Dictionary<uint, BSPhysObject> PhysObjects;
-    public BSShapeCollection Shapes;
-
-    // Keeping track of the objects with collisions so we can report begin and end of a collision
-    public HashSet<BSPhysObject> ObjectsWithCollisions = new HashSet<BSPhysObject>();
-    public HashSet<BSPhysObject> ObjectsWithNoMoreCollisions = new HashSet<BSPhysObject>();
-
-    // All the collision processing is protected with this lock object
-    public Object CollisionLock = new Object();
-
-    // Properties are updated here
-    public Object UpdateLock = new Object();
-    public HashSet<BSPhysObject> ObjectsWithUpdates = new HashSet<BSPhysObject>();
-
-    // Keep track of all the avatars so we can send them a collision event
-    //    every tick so OpenSim will update its animation.
-    private HashSet<BSPhysObject> AvatarsInScene = new HashSet<BSPhysObject>();
-    private Object AvatarsInSceneLock = new Object();
-
-    // let my minuions use my logger
-    public ILog Logger { get { return m_log; } }
-
-    public IMesher mesher;
-    public uint WorldID { get; private set; }
-    public BulletWorld World { get; private set; }
-
-    // All the constraints that have been allocated in this instance.
-    public BSConstraintCollection Constraints { get; private set; }
-
-    // Simulation parameters
-    //internal float m_physicsStepTime;   // if running independently, the interval simulated by default
-
-    internal int m_maxSubSteps;
-    internal float m_fixedTimeStep;
-
-    internal float m_simulatedTime;     // the time simulated previously. Used for physics framerate calc.
-
-    internal long m_simulationStep = 0; // The current simulation step.
-    public long SimulationStep { get { return m_simulationStep; } }
-    // A number to use for SimulationStep that is probably not any step value
-    // Used by the collision code (which remembers the step when a collision happens) to remember not any simulation step.
-    public static long NotASimulationStep = -1234;
-
-    internal float LastTimeStep { get; private set; }   // The simulation time from the last invocation of Simulate()
-
-    internal float NominalFrameRate { get; set; }       // Parameterized ideal frame rate that simulation is scaled to
-
-    // Physical objects can register for prestep or poststep events
-    public delegate void PreStepAction(float timeStep);
-    public delegate void PostStepAction(float timeStep);
-    public event PreStepAction BeforeStep;
-    public event PostStepAction AfterStep;
-
-    // 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
-    public int SimulationNowTime { get; private set; }
-
-    // True if initialized and ready to do simulation steps
-    private bool m_initialized = false;
-
-    // Flag which is true when processing taints.
-    // Not guaranteed to be correct all the time (don't depend on this) but good for debugging.
-    public bool InTaintTime { get; private set; }
-
-    // Pinned memory used to pass step information between managed and unmanaged
-    internal int m_maxCollisionsPerFrame;
-    internal CollisionDesc[] m_collisionArray;
-
-    internal int m_maxUpdatesPerFrame;
-    internal EntityProperties[] m_updateArray;
-
-    /// <summary>
-    /// Used to control physics simulation timing if Bullet is running on its own thread.
-    /// </summary>
-    private ManualResetEvent m_updateWaitEvent;
-
-    public const uint TERRAIN_ID = 0;       // OpenSim senses terrain with a localID of zero
-    public const uint GROUNDPLANE_ID = 1;
-    public const uint CHILDTERRAIN_ID = 2;  // Terrain allocated based on our mega-prim childre start here
-
-    public float SimpleWaterLevel { get; set; }
-    public BSTerrainManager TerrainManager { get; private set; }
-
-    public ConfigurationParameters Params
-    {
-        get { return UnmanagedParams[0]; }
-    }
-    public Vector3 DefaultGravity
-    {
-        get { return new Vector3(0f, 0f, Params.gravity); }
-    }
-    // Just the Z value of the gravity
-    public float DefaultGravityZ
-    {
-        get { return Params.gravity; }
-    }
-
-    // When functions in the unmanaged code must be called, it is only
-    //   done at a known time just before the simulation step. The taint
-    //   system saves all these function calls and executes them in
-    //   order before the simulation.
-    public delegate void TaintCallback();
-    private struct TaintCallbackEntry
-    {
-        public String originator;
-        public String ident;
-        public TaintCallback callback;
-        public TaintCallbackEntry(string pIdent, TaintCallback pCallBack)
-        {
-            originator = BSScene.DetailLogZero;
-            ident = pIdent;
-            callback = pCallBack;
-        }
-        public TaintCallbackEntry(string pOrigin, string pIdent, TaintCallback pCallBack)
-        {
-            originator = pOrigin;
-            ident = pIdent;
-            callback = pCallBack;
-        }
-    }
-    private Object _taintLock = new Object();   // lock for using the next object
-    private List<TaintCallbackEntry> _taintOperations;
-    private Dictionary<string, TaintCallbackEntry> _postTaintOperations;
-    private List<TaintCallbackEntry> _postStepOperations;
-
-    // A pointer to an instance if this structure is passed to the C++ code
-    // Used to pass basic configuration values to the unmanaged code.
-    internal ConfigurationParameters[] UnmanagedParams;
-
-    // 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_physicsLoggingDoFlush;
-    private bool m_physicsPhysicalDumpEnabled;
-    public int PhysicsMetricDumpFrames { get; set; }
-    // 'true' of the vehicle code is to log lots of details
-    public bool VehicleLoggingEnabled { get; private set; }
-    public bool VehiclePhysicalLoggingEnabled { get; private set; }
-
-    #region Construction and Initialization
-    public BSScene(string engineType, string identifier)
-    {
-        m_initialized = false;
-
-        // The name of the region we're working for is passed to us. Keep for identification.
-        RegionName = identifier;
-
-        // Set identifying variables in the PhysicsScene interface.
-        EngineType = engineType;
-        Name = EngineType + "/" + RegionName;
-    }
-
-    // Old version of initialization that assumes legacy sized regions (256x256)
-    public override void Initialise(IMesher meshmerizer, IConfigSource config)
-    {
-        m_log.ErrorFormat("{0} WARNING WARNING WARNING! BulletSim initialized without region extent specification. Terrain will be messed up.");
-        Vector3 regionExtent = new Vector3( Constants.RegionSize, Constants.RegionSize, Constants.RegionSize);
-        Initialise(meshmerizer, config, regionExtent);
-        
-    }
-
-    public override void Initialise(IMesher meshmerizer, IConfigSource config, Vector3 regionExtent)
-    {
-        mesher = meshmerizer;
-        _taintOperations = new List<TaintCallbackEntry>();
-        _postTaintOperations = new Dictionary<string, TaintCallbackEntry>();
-        _postStepOperations = new List<TaintCallbackEntry>();
-        PhysObjects = new Dictionary<uint, BSPhysObject>();
-        Shapes = new BSShapeCollection(this);
-
-        m_simulatedTime = 0f;
-        LastTimeStep = 0.1f;
-
-        // Allocate pinned memory to pass parameters.
-        UnmanagedParams = new ConfigurationParameters[1];
-
-        // Set default values for physics parameters plus any overrides from the ini file
-        GetInitialParameterValues(config);
-
-        // Force some parameters to values depending on other configurations
-        // Only use heightmap terrain implementation if terrain larger than legacy size
-        if ((uint)regionExtent.X > Constants.RegionSize || (uint)regionExtent.Y > Constants.RegionSize)
-        {
-            m_log.WarnFormat("{0} Forcing terrain implementation to heightmap for large region", LogHeader);
-            BSParam.TerrainImplementation = (float)BSTerrainPhys.TerrainImplementation.Heightmap;
-        }
-
-        // Get the connection to the physics engine (could be native or one of many DLLs)
-        PE = SelectUnderlyingBulletEngine(BulletEngineName);
-
-        // 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, m_physicsLoggingDoFlush);
-            PhysicsLogging.ErrorLogger = m_log; // for DEBUG. Let's the logger output its own error messages.
-        }
-        else
-        {
-            PhysicsLogging = new Logging.LogWriter();
-        }
-
-        // Allocate memory for returning of the updates and collisions from the physics engine
-        m_collisionArray = new CollisionDesc[m_maxCollisionsPerFrame];
-        m_updateArray = new EntityProperties[m_maxUpdatesPerFrame];
-
-        // The bounding box for the simulated world. The origin is 0,0,0 unless we're
-        //    a child in a mega-region.
-        // Bullet actually doesn't care about the extents of the simulated
-        //    area. It tracks active objects no matter where they are.
-        Vector3 worldExtent = regionExtent;
-
-        World = PE.Initialize(worldExtent, Params, m_maxCollisionsPerFrame, ref m_collisionArray, m_maxUpdatesPerFrame, ref m_updateArray);
-
-        Constraints = new BSConstraintCollection(World);
-
-        TerrainManager = new BSTerrainManager(this, worldExtent);
-        TerrainManager.CreateInitialGroundPlaneAndTerrain();
-
-        // Put some informational messages into the log file.
-        m_log.InfoFormat("{0} Linksets implemented with {1}", LogHeader, (BSLinkset.LinksetImplementation)BSParam.LinksetImplementation);
-
-        InTaintTime = false;
-        m_initialized = true;
-
-        // If the physics engine runs on its own thread, start same.
-        if (BSParam.UseSeparatePhysicsThread)
-        {
-            // The physics simulation should happen independently of the heartbeat loop
-            m_physicsThread 
-                = WorkManager.StartThread(
-                    BulletSPluginPhysicsThread, 
-                    string.Format("{0} ({1})", BulletEngineName, RegionName), 
-                    ThreadPriority.Normal, 
-                    true, 
-                    true);
-        }
-    }
-
-    // All default parameter values are set here. There should be no values set in the
-    // variable definitions.
-    private void GetInitialParameterValues(IConfigSource config)
-    {
-        ConfigurationParameters parms = new ConfigurationParameters();
-        UnmanagedParams[0] = parms;
-
-        BSParam.SetParameterDefaultValues(this);
-
-        if (config != null)
-        {
-            // If there are specifications in the ini file, use those values
-            IConfig pConfig = config.Configs["BulletSim"];
-            if (pConfig != null)
-            {
-                BSParam.SetParameterConfigurationValues(this, pConfig);
-
-                // There are two Bullet implementations to choose from
-                BulletEngineName = pConfig.GetString("BulletEngine", "BulletUnmanaged");
-
-                // Very detailed logging for physics debugging
-                // TODO: the boolean values can be moved to the normal parameter processing.
-                m_physicsLoggingEnabled = pConfig.GetBoolean("PhysicsLoggingEnabled", false);
-                m_physicsLoggingDir = pConfig.GetString("PhysicsLoggingDir", ".");
-                m_physicsLoggingPrefix = pConfig.GetString("PhysicsLoggingPrefix", "physics-%REGIONNAME%-");
-                m_physicsLoggingFileMinutes = pConfig.GetInt("PhysicsLoggingFileMinutes", 5);
-                m_physicsLoggingDoFlush = pConfig.GetBoolean("PhysicsLoggingDoFlush", false);
-                m_physicsPhysicalDumpEnabled = pConfig.GetBoolean("PhysicsPhysicalDumpEnabled", false);
-                // Very detailed logging for vehicle debugging
-                VehicleLoggingEnabled = pConfig.GetBoolean("VehicleLoggingEnabled", false);
-                VehiclePhysicalLoggingEnabled = pConfig.GetBoolean("VehiclePhysicalLoggingEnabled", false);
-
-                // Do any replacements in the parameters
-                m_physicsLoggingPrefix = m_physicsLoggingPrefix.Replace("%REGIONNAME%", RegionName);
-            }
-            else
-            {
-                // Nothing in the configuration INI file so assume unmanaged and other defaults.
-                BulletEngineName = "BulletUnmanaged";
-                m_physicsLoggingEnabled = false;
-                VehicleLoggingEnabled = false;
-            }
-
-            // The material characteristics.
-            BSMaterials.InitializeFromDefaults(Params);
-            if (pConfig != null)
-            {
-                // Let the user add new and interesting material property values.
-                BSMaterials.InitializefromParameters(pConfig);
-            }
-        }
-    }
-
-    // A helper function that handles a true/false parameter and returns the proper float number encoding
-    float ParamBoolean(IConfig config, string parmName, float deflt)
-    {
-        float ret = deflt;
-        if (config.Contains(parmName))
-        {
-            ret = ConfigurationParameters.numericFalse;
-            if (config.GetBoolean(parmName, false))
-            {
-                ret = ConfigurationParameters.numericTrue;
-            }
-        }
-        return ret;
-    }
-
-    // Select the connection to the actual Bullet implementation.
-    // The main engine selection is the engineName up to the first hypen.
-    // So "Bullet-2.80-OpenCL-Intel" specifies the 'bullet' class here and the whole name
-    //     is passed to the engine to do its special selection, etc.
-    private BSAPITemplate SelectUnderlyingBulletEngine(string engineName)
-    {
-        // For the moment, do a simple switch statement.
-        // Someday do fancyness with looking up the interfaces in the assembly.
-        BSAPITemplate ret = null;
-
-        string selectionName = engineName.ToLower();
-        int hyphenIndex = engineName.IndexOf("-");
-        if (hyphenIndex > 0)
-            selectionName = engineName.ToLower().Substring(0, hyphenIndex - 1);
-
-        switch (selectionName)
-        {
-            case "bullet":
-            case "bulletunmanaged":
-                ret = new BSAPIUnman(engineName, this);
-                break;
-            case "bulletxna":
-                ret = new BSAPIXNA(engineName, this);
-                // Disable some features that are not implemented in BulletXNA
-                m_log.InfoFormat("{0} Disabling some physics features not implemented by BulletXNA", LogHeader);
-                m_log.InfoFormat("{0}    Disabling ShouldUseBulletHACD", LogHeader);
-                BSParam.ShouldUseBulletHACD = false;
-                m_log.InfoFormat("{0}    Disabling ShouldUseSingleConvexHullForPrims", LogHeader);
-                BSParam.ShouldUseSingleConvexHullForPrims = false;
-                m_log.InfoFormat("{0}    Disabling ShouldUseGImpactShapeForPrims", LogHeader);
-                BSParam.ShouldUseGImpactShapeForPrims = false;
-                m_log.InfoFormat("{0}    Setting terrain implimentation to Heightmap", LogHeader);
-                BSParam.TerrainImplementation = (float)BSTerrainPhys.TerrainImplementation.Heightmap;
-                break;
-        }
-
-        if (ret == null)
-        {
-            m_log.ErrorFormat("{0} COULD NOT SELECT BULLET ENGINE: '[BulletSim]PhysicsEngine' must be either 'BulletUnmanaged-*' or 'BulletXNA-*'", LogHeader);
-        }
-        else
-        {
-            m_log.InfoFormat("{0} Selected bullet engine {1} -> {2}/{3}", LogHeader, engineName, ret.BulletEngineName, ret.BulletEngineVersion);
-        }
-
-        return ret;
-    }
-
-    public override void Dispose()
-    {
-        // m_log.DebugFormat("{0}: Dispose()", LogHeader);
-
-        // make sure no stepping happens while we're deleting stuff
-        m_initialized = false;
-
-        lock (PhysObjects)
-        {
-            foreach (KeyValuePair<uint, BSPhysObject> kvp in PhysObjects)
-            {
-                kvp.Value.Destroy();
-            }
-            PhysObjects.Clear();
-        }
-
-        // Now that the prims are all cleaned up, there should be no constraints left
-        if (Constraints != null)
-        {
-            Constraints.Dispose();
-            Constraints = null;
-        }
-
-        if (Shapes != null)
-        {
-            Shapes.Dispose();
-            Shapes = null;
-        }
-
-        if (TerrainManager != null)
-        {
-            TerrainManager.ReleaseGroundPlaneAndTerrain();
-            TerrainManager.Dispose();
-            TerrainManager = null;
-        }
-
-        // Anything left in the unmanaged code should be cleaned out
-        PE.Shutdown(World);
-
-        // Not logging any more
-        PhysicsLogging.Close();
-    }
-    #endregion // Construction and Initialization
-
-    #region Prim and Avatar addition and removal
-
-    public override PhysicsActor AddAvatar(string avName, Vector3 position, Vector3 velocity, Vector3 size, bool isFlying)
-    {
-        m_log.ErrorFormat("{0}: CALL TO AddAvatar in BSScene. NOT IMPLEMENTED", LogHeader);
-        return null;
-    }
-
-    public override PhysicsActor AddAvatar(uint localID, string avName, Vector3 position, Vector3 velocity, 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, velocity, size, isFlying);
-        lock (PhysObjects)
-            PhysObjects.Add(localID, actor);
-
-        // TODO: Remove kludge someday.
-        // We must generate a collision for avatars whether they collide or not.
-        // This is required by OpenSim to update avatar animations, etc.
-        lock (AvatarsInSceneLock)
-            AvatarsInScene.Add(actor);
-
-        return actor;
-    }
-
-    public override void RemoveAvatar(PhysicsActor actor)
-    {
-        // m_log.DebugFormat("{0}: RemoveAvatar", LogHeader);
-
-        if (!m_initialized) return;
-
-        BSCharacter bsactor = actor as BSCharacter;
-        if (bsactor != null)
-        {
-            try
-            {
-                lock (PhysObjects)
-                    PhysObjects.Remove(bsactor.LocalID);
-                // Remove kludge someday
-                lock (AvatarsInSceneLock)
-                    AvatarsInScene.Remove(bsactor);
-            }
-            catch (Exception e)
-            {
-                m_log.WarnFormat("{0}: Attempt to remove avatar that is not in physics scene: {1}", LogHeader, e);
-            }
-            bsactor.Destroy();
-            // bsactor.dispose();
-        }
-        else
-        {
-            m_log.ErrorFormat("{0}: Requested to remove avatar that is not a BSCharacter. ID={1}, type={2}",
-                                        LogHeader, actor.LocalID, actor.GetType().Name);
-        }
-    }
-
-    public override void RemovePrim(PhysicsActor prim)
-    {
-        if (!m_initialized) return;
-
-        BSPhysObject bsprim = prim as BSPhysObject;
-        if (bsprim != null)
-        {
-            DetailLog("{0},RemovePrim,call", bsprim.LocalID);
-            // m_log.DebugFormat("{0}: RemovePrim. id={1}/{2}", LogHeader, bsprim.Name, bsprim.LocalID);
-            try
-            {
-                lock (PhysObjects) PhysObjects.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();
-        }
-        else
-        {
-            m_log.ErrorFormat("{0}: Attempt to remove prim that is not a BSPrim type.", LogHeader);
-        }
-    }
-
-    public override PhysicsActor AddPrimShape(string primName, PrimitiveBaseShape pbs, Vector3 position,
-                                              Vector3 size, Quaternion rotation, bool isPhysical, uint localID)
-    {
-        // m_log.DebugFormat("{0}: AddPrimShape2: {1}", LogHeader, primName);
-
-        if (!m_initialized) return null;
-
-        // DetailLog("{0},BSScene.AddPrimShape,call", localID);
-
-        BSPhysObject prim = new BSPrimLinkable(localID, primName, this, position, size, rotation, pbs, isPhysical);
-        lock (PhysObjects) PhysObjects.Add(localID, prim);
-        return prim;
-    }
-
-    // This is a call from the simulator saying that some physical property has been updated.
-    // The BulletSim driver senses the changing of relevant properties so this taint
-    // information call is not needed.
-    public override void AddPhysicsActorTaint(PhysicsActor prim) { }
-
-    #endregion // Prim and Avatar addition and removal
-
-    #region Simulation
-
-    // Call from the simulator to send physics information to the simulator objects.
-    // This pushes all the collision and property update events into the objects in
-    //    the simulator and, since it is on the heartbeat thread, there is an implicit
-    //    locking of those data structures from other heartbeat events.
-    // If the physics engine is running on a separate thread, the update information
-    //    will be in the ObjectsWithCollions and ObjectsWithUpdates structures.
-    public override float Simulate(float timeStep)
-    {
-        if (!BSParam.UseSeparatePhysicsThread)
-        {
-            DoPhysicsStep(timeStep);
-        }
-        return SendUpdatesToSimulator(timeStep);
-    }
-
-    // Call the physics engine to do one 'timeStep' and collect collisions and updates
-    //    into ObjectsWithCollisions and ObjectsWithUpdates data structures.
-    private void DoPhysicsStep(float timeStep)
-    {
-        // prevent simulation until we've been initialized
-        if (!m_initialized) return;
-
-        LastTimeStep = timeStep;
-
-        int updatedEntityCount = 0;
-        int collidersCount = 0;
-
-        int beforeTime = Util.EnvironmentTickCount();
-        int simTime = 0;
-
-        int numTaints = _taintOperations.Count;
-        InTaintTime = true; // Only used for debugging so locking is not necessary.
-
-        // update the prim states while we know the physics engine is not busy
-        ProcessTaints();
-
-        // Some of the physical objects requre individual, pre-step calls
-        //      (vehicles and avatar movement, in particular)
-        TriggerPreStepEvent(timeStep);
-
-        // the prestep actions might have added taints
-        numTaints += _taintOperations.Count;
-        ProcessTaints();
-
-        InTaintTime = false; // Only used for debugging so locking is not necessary.
-
-        // The following causes the unmanaged code to output ALL the values found in ALL the objects in the world.
-        // Only enable this in a limited test world with few objects.
-        if (m_physicsPhysicalDumpEnabled)
-            PE.DumpAllInfo(World);
-
-        // step the physical world one interval
-        m_simulationStep++;
-        int numSubSteps = 0;
-        try
-        {
-            numSubSteps = PE.PhysicsStep(World, timeStep, m_maxSubSteps, m_fixedTimeStep, out updatedEntityCount, out collidersCount);
-
-        }
-        catch (Exception e)
-        {
-            m_log.WarnFormat("{0},PhysicsStep Exception: nTaints={1}, substeps={2}, updates={3}, colliders={4}, e={5}",
-                        LogHeader, numTaints, numSubSteps, updatedEntityCount, collidersCount, e);
-            DetailLog("{0},PhysicsStepException,call, nTaints={1}, substeps={2}, updates={3}, colliders={4}",
-                        DetailLogZero, numTaints, numSubSteps, updatedEntityCount, collidersCount);
-            updatedEntityCount = 0;
-            collidersCount = 0;
-        }
-
-        // Make the physics engine dump useful statistics periodically
-        if (PhysicsMetricDumpFrames != 0 && ((m_simulationStep % PhysicsMetricDumpFrames) == 0))
-            PE.DumpPhysicsStatistics(World);
-
-        // Get a value for 'now' so all the collision and update routines don't have to get their own.
-        SimulationNowTime = Util.EnvironmentTickCount();
-
-        // Send collision information to the colliding objects. The objects decide if the collision
-        //     is 'real' (like linksets don't collide with themselves) and the individual objects
-        //     know if the simulator has subscribed to collisions.
-        lock (CollisionLock)
-        {
-            if (collidersCount > 0)
-            {
-                lock (PhysObjects)
-                {
-                    for (int ii = 0; ii < collidersCount; ii++)
-                    {
-                        uint cA = m_collisionArray[ii].aID;
-                        uint cB = m_collisionArray[ii].bID;
-                        Vector3 point = m_collisionArray[ii].point;
-                        Vector3 normal = m_collisionArray[ii].normal;
-                        float penetration = m_collisionArray[ii].penetration;
-                        SendCollision(cA, cB, point, normal, penetration);
-                        SendCollision(cB, cA, point, -normal, penetration);
-                    }
-                }
-            }
-        }
-
-        // If any of the objects had updated properties, tell the managed objects about the update
-        //     and remember that there was a change so it will be passed to the simulator.
-        lock (UpdateLock)
-        {
-            if (updatedEntityCount > 0)
-            {
-                lock (PhysObjects)
-                {
-                    for (int ii = 0; ii < updatedEntityCount; ii++)
-                    {
-                        EntityProperties entprop = m_updateArray[ii];
-                        BSPhysObject pobj;
-                        if (PhysObjects.TryGetValue(entprop.ID, out pobj))
-                        {
-                            if (pobj.IsInitialized)
-                                pobj.UpdateProperties(entprop);
-                        }
-                    }
-                }
-            }
-        }
-
-        // Some actors want to know when the simulation step is complete.
-        TriggerPostStepEvent(timeStep);
-
-        simTime = Util.EnvironmentTickCountSubtract(beforeTime);
-        if (PhysicsLogging.Enabled)
-        {
-            DetailLog("{0},DoPhysicsStep,complete,frame={1}, nTaints={2}, simTime={3}, substeps={4}, updates={5}, colliders={6}, objWColl={7}",
-                                    DetailLogZero, m_simulationStep, numTaints, simTime, numSubSteps,
-                                    updatedEntityCount, collidersCount, ObjectsWithCollisions.Count);
-        }
-
-        // The following causes the unmanaged code to output ALL the values found in ALL the objects in the world.
-        // Only enable this in a limited test world with few objects.
-        if (m_physicsPhysicalDumpEnabled)
-            PE.DumpAllInfo(World);
-
-        // The physics engine returns the number of milliseconds it simulated this call.
-        // These are summed and normalized to one second and divided by 1000 to give the reported physics FPS.
-        // Multiply by a fixed nominal frame rate to give a rate similar to the simulator (usually 55).
-//        m_simulatedTime +=  (float)numSubSteps * m_fixedTimeStep * 1000f * NominalFrameRate;
-        m_simulatedTime += (float)numSubSteps * m_fixedTimeStep;
-    }
-
-    // Called by a BSPhysObject to note that it has changed properties and this information
-    //    should be passed up to the simulator at the proper time.
-    // Note: this is called by the BSPhysObject from invocation via DoPhysicsStep() above so
-    //    this is is under UpdateLock.
-    public void PostUpdate(BSPhysObject updatee)
-    {
-        lock (UpdateLock)
-        {
-            ObjectsWithUpdates.Add(updatee);
-        }
-    }
-
-    // The simulator thinks it is physics time so return all the collisions and position
-    //     updates that were collected in actual physics simulation.
-    private float SendUpdatesToSimulator(float timeStep)
-    {
-        if (!m_initialized) return 5.0f;
-
-        DetailLog("{0},SendUpdatesToSimulator,collisions={1},updates={2},simedTime={3}",
-            BSScene.DetailLogZero, ObjectsWithCollisions.Count, ObjectsWithUpdates.Count, m_simulatedTime);
-        // Push the collisions into the simulator.
-        lock (CollisionLock)
-        {
-            if (ObjectsWithCollisions.Count > 0)
-            {
-                foreach (BSPhysObject bsp in ObjectsWithCollisions)
-                    if (!bsp.SendCollisions())
-                    {
-                        // If the object is done colliding, see that it's removed from the colliding list
-                        ObjectsWithNoMoreCollisions.Add(bsp);
-                    }
-            }
-
-            // This is a kludge to get avatar movement updates.
-            // The simulator expects collisions for avatars even if there are have been no collisions.
-            //    The event updates avatar animations and stuff.
-            // If you fix avatar animation updates, remove this overhead and let normal collision processing happen.
-            // Note that we get a copy of the list to search because SendCollision() can take a while.
-            HashSet<BSPhysObject> tempAvatarsInScene;
-            lock (AvatarsInSceneLock)
-            {
-                tempAvatarsInScene = new HashSet<BSPhysObject>(AvatarsInScene);
-            }
-            foreach (BSPhysObject actor in tempAvatarsInScene)
-            {
-                if (!ObjectsWithCollisions.Contains(actor))   // don't call avatars twice
-                    actor.SendCollisions();
-            }
-            tempAvatarsInScene = null;
-
-            // Objects that are done colliding are removed from the ObjectsWithCollisions list.
-            // Not done above because it is inside an iteration of ObjectWithCollisions.
-            // This complex collision processing is required to create an empty collision
-            //     event call after all real collisions have happened on an object. This allows
-            //     the simulator to generate the 'collision end' event.
-            if (ObjectsWithNoMoreCollisions.Count > 0)
-            {
-                foreach (BSPhysObject po in ObjectsWithNoMoreCollisions)
-                    ObjectsWithCollisions.Remove(po);
-                ObjectsWithNoMoreCollisions.Clear();
-            }
-        }
-
-        // Call the simulator for each object that has physics property updates.
-        HashSet<BSPhysObject> updatedObjects = null;
-        lock (UpdateLock)
-        {
-            if (ObjectsWithUpdates.Count > 0)
-            {
-                updatedObjects = ObjectsWithUpdates;
-                ObjectsWithUpdates = new HashSet<BSPhysObject>();
-            }
-        }
-        if (updatedObjects != null)
-        {
-            foreach (BSPhysObject obj in updatedObjects)
-            {
-                obj.RequestPhysicsterseUpdate();
-            }
-            updatedObjects.Clear();
-        }
-
-        // Return the framerate simulated to give the above returned results.
-        // (Race condition here but this is just bookkeeping so rare mistakes do not merit a lock).
-        // undo math above
-        float simTime = m_simulatedTime / timeStep;
-        m_simulatedTime = 0f;
-        return simTime;
-    }
-
-    // Something has collided
-    private void SendCollision(uint localID, uint collidingWith, Vector3 collidePoint, Vector3 collideNormal, float penetration)
-    {
-        if (localID <= TerrainManager.HighestTerrainID)
-        {
-            return;         // don't send collisions to the terrain
-        }
-
-        BSPhysObject collider;
-        // NOTE that PhysObjects was locked before the call to SendCollision().
-        if (!PhysObjects.TryGetValue(localID, out collider))
-        {
-            // If the object that is colliding cannot be found, just ignore the collision.
-            DetailLog("{0},BSScene.SendCollision,colliderNotInObjectList,id={1},with={2}", DetailLogZero, localID, collidingWith);
-            return;
-        }
-
-        // Note: the terrain is not in the physical object list so 'collidee' can be null when Collide() is called.
-        BSPhysObject collidee = null;
-        PhysObjects.TryGetValue(collidingWith, out collidee);
-
-        // DetailLog("{0},BSScene.SendCollision,collide,id={1},with={2}", DetailLogZero, localID, collidingWith);
-
-        if (collider.IsInitialized)
-        {
-            if (collider.Collide(collidingWith, collidee, collidePoint, collideNormal, penetration))
-            {
-                // If a collision was 'good', remember to send it to the simulator
-                lock (CollisionLock)
-                {
-                    ObjectsWithCollisions.Add(collider);
-                }
-            }
-        }
-
-        return;
-    }
-
-    public void BulletSPluginPhysicsThread()
-    {
-        Thread.CurrentThread.Priority = ThreadPriority.Highest;
-        m_updateWaitEvent = new ManualResetEvent(false);
-
-        while (m_initialized)
-        {
-            int beginSimulationRealtimeMS = Util.EnvironmentTickCount();
-
-            if (BSParam.Active)
-                DoPhysicsStep(BSParam.PhysicsTimeStep);
-
-            int simulationRealtimeMS = Util.EnvironmentTickCountSubtract(beginSimulationRealtimeMS);
-            int simulationTimeVsRealtimeDifferenceMS = ((int)(BSParam.PhysicsTimeStep*1000f)) - simulationRealtimeMS;
-
-            if (simulationTimeVsRealtimeDifferenceMS > 0)
-            {
-                // The simulation of the time interval took less than realtime.
-                // Do a wait for the rest of realtime.
-                 m_updateWaitEvent.WaitOne(simulationTimeVsRealtimeDifferenceMS);
-                //Thread.Sleep(simulationTimeVsRealtimeDifferenceMS);
-            }
-            else
-            {
-                // The simulation took longer than realtime.
-                // Do some scaling of simulation time.
-                // TODO.
-                DetailLog("{0},BulletSPluginPhysicsThread,longerThanRealtime={1}", BSScene.DetailLogZero, simulationTimeVsRealtimeDifferenceMS);
-            }
-
-            Watchdog.UpdateThread();
-        }
-
-        Watchdog.RemoveThread();
-    }
-
-    #endregion // Simulation
-
-    public override void GetResults() { }
-
-    #region Terrain
-
-    public override void SetTerrain(float[] heightMap) {
-        TerrainManager.SetTerrain(heightMap);
-    }
-
-    public override void SetWaterLevel(float baseheight)
-    {
-        SimpleWaterLevel = baseheight;
-    }
-
-    public override void DeleteTerrain()
-    {
-        // m_log.DebugFormat("{0}: DeleteTerrain()", LogHeader);
-    }
-
-    // Although no one seems to check this, I do support combining.
-    public override bool SupportsCombining()
-    {
-        return TerrainManager.SupportsCombining();
-    }
-    // This call says I am a child to region zero in a mega-region. 'pScene' is that
-    //    of region zero, 'offset' is my offset from regions zero's origin, and
-    //    'extents' is the largest XY that is handled in my region.
-    public override void Combine(PhysicsScene pScene, Vector3 offset, Vector3 extents)
-    {
-        TerrainManager.Combine(pScene, offset, extents);
-    }
-
-    // Unhook all the combining that I know about.
-    public override void UnCombine(PhysicsScene pScene)
-    {
-        TerrainManager.UnCombine(pScene);
-    }
-
-    #endregion // Terrain
-
-    public override Dictionary<uint, float> GetTopColliders()
-    {
-        Dictionary<uint, float> topColliders;
-
-        lock (PhysObjects)
-        {
-            foreach (KeyValuePair<uint, BSPhysObject> kvp in PhysObjects)
-            {
-                kvp.Value.ComputeCollisionScore();
-            }
-
-            List<BSPhysObject> orderedPrims = new List<BSPhysObject>(PhysObjects.Values);
-            orderedPrims.OrderByDescending(p => p.CollisionScore);
-            topColliders = orderedPrims.Take(25).ToDictionary(p => p.LocalID, p => p.CollisionScore);
-        }
-
-        return topColliders;
-    }
-
-    public override bool IsThreaded { get { return false;  } }
-
-    #region Extensions
-    public override object Extension(string pFunct, params object[] pParams)
-    {
-        DetailLog("{0} BSScene.Extension,op={1}", DetailLogZero, pFunct);
-        return base.Extension(pFunct, pParams);
-    }
-    #endregion // Extensions
-
-    public static string PrimitiveBaseShapeToString(PrimitiveBaseShape pbs)
-    {
-        float pathShearX = pbs.PathShearX < 128 ? (float)pbs.PathShearX * 0.01f : (float)(pbs.PathShearX - 256) * 0.01f;
-        float pathShearY = pbs.PathShearY < 128 ? (float)pbs.PathShearY * 0.01f : (float)(pbs.PathShearY - 256) * 0.01f;
-        float pathBegin = (float)pbs.PathBegin * 2.0e-5f;
-        float pathEnd = 1.0f - (float)pbs.PathEnd * 2.0e-5f;
-        float pathScaleX = (float)(200 - pbs.PathScaleX) * 0.01f;
-        float pathScaleY = (float)(200 - pbs.PathScaleY) * 0.01f;
-        float pathTaperX = pbs.PathTaperX * 0.01f;
-        float pathTaperY = pbs.PathTaperY * 0.01f;
-
-        float profileBegin = (float)pbs.ProfileBegin * 2.0e-5f;
-        float profileEnd = 1.0f - (float)pbs.ProfileEnd * 2.0e-5f;
-        float profileHollow = (float)pbs.ProfileHollow * 2.0e-5f;
-        if (profileHollow > 0.95f)
-            profileHollow = 0.95f;
-
-        StringBuilder buff = new StringBuilder();
-        buff.Append("shape=");
-        buff.Append(((ProfileShape)pbs.ProfileShape).ToString());
-        buff.Append(",");
-        buff.Append("hollow=");
-        buff.Append(((HollowShape)pbs.HollowShape).ToString());
-        buff.Append(",");
-        buff.Append("pathCurve=");
-        buff.Append(((Extrusion)pbs.PathCurve).ToString());
-        buff.Append(",");
-        buff.Append("profCurve=");
-        buff.Append(((Extrusion)pbs.ProfileCurve).ToString());
-        buff.Append(",");
-        buff.Append("profHollow=");
-        buff.Append(profileHollow.ToString());
-        buff.Append(",");
-        buff.Append("pathBegEnd=");
-        buff.Append(pathBegin.ToString());
-        buff.Append("/");
-        buff.Append(pathEnd.ToString());
-        buff.Append(",");
-        buff.Append("profileBegEnd=");
-        buff.Append(profileBegin.ToString());
-        buff.Append("/");
-        buff.Append(profileEnd.ToString());
-        buff.Append(",");
-        buff.Append("scaleXY=");
-        buff.Append(pathScaleX.ToString());
-        buff.Append("/");
-        buff.Append(pathScaleY.ToString());
-        buff.Append(",");
-        buff.Append("shearXY=");
-        buff.Append(pathShearX.ToString());
-        buff.Append("/");
-        buff.Append(pathShearY.ToString());
-        buff.Append(",");
-        buff.Append("taperXY=");
-        buff.Append(pbs.PathTaperX.ToString());
-        buff.Append("/");
-        buff.Append(pbs.PathTaperY.ToString());
-        buff.Append(",");
-        buff.Append("skew=");
-        buff.Append(pbs.PathSkew.ToString());
-        buff.Append(",");
-        buff.Append("twist/Beg=");
-        buff.Append(pbs.PathTwist.ToString());
-        buff.Append("/");
-        buff.Append(pbs.PathTwistBegin.ToString());
-
-        return buff.ToString();
-    }
-
-    #region Taints
-    // The simulation execution order is:
-    // Simulate()
-    //    DoOneTimeTaints
-    //    TriggerPreStepEvent
-    //    DoOneTimeTaints
-    //    Step()
-    //       ProcessAndSendToSimulatorCollisions
-    //       ProcessAndSendToSimulatorPropertyUpdates
-    //    TriggerPostStepEvent
-
-    // Calls to the PhysicsActors can't directly call into the physics engine
-    //       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(string pOriginator, string pIdent, TaintCallback pCallback)
-    {
-        TaintedObject(false /*inTaintTime*/, pOriginator, pIdent, pCallback);
-    }
-    public void TaintedObject(uint pOriginator, String pIdent, TaintCallback pCallback)
-    {
-        TaintedObject(false /*inTaintTime*/, m_physicsLoggingEnabled ? pOriginator.ToString() : BSScene.DetailLogZero, pIdent, pCallback);
-    }
-    public void TaintedObject(bool inTaintTime, String pIdent, TaintCallback pCallback)
-    {
-        TaintedObject(inTaintTime, BSScene.DetailLogZero, pIdent, pCallback);
-    }
-    public void TaintedObject(bool inTaintTime, uint pOriginator, String pIdent, TaintCallback pCallback)
-    {
-        TaintedObject(inTaintTime, m_physicsLoggingEnabled ? pOriginator.ToString() : BSScene.DetailLogZero, pIdent, pCallback);
-    }
-    // Sometimes a potentially tainted operation can be used in and out of taint time.
-    // This routine executes the command immediately if in taint-time otherwise it is queued.
-    public void TaintedObject(bool inTaintTime, string pOriginator, string pIdent, TaintCallback pCallback)
-    {
-        if (!m_initialized) return;
-
-        if (inTaintTime)
-            pCallback();
-        else
-        {
-            lock (_taintLock)
-            {
-                _taintOperations.Add(new TaintCallbackEntry(pOriginator, pIdent, pCallback));
-            }
-        }
-    }
-
-    private void TriggerPreStepEvent(float timeStep)
-    {
-        PreStepAction actions = BeforeStep;
-        if (actions != null)
-            actions(timeStep);
-
-    }
-
-    private void TriggerPostStepEvent(float timeStep)
-    {
-        PostStepAction actions = AfterStep;
-        if (actions != null)
-            actions(timeStep);
-
-    }
-
-    // When someone tries to change a property on a BSPrim or BSCharacter, the object queues
-    // a callback into itself to do the actual property change. That callback is called
-    // here just before the physics engine is called to step the simulation.
-    public void ProcessTaints()
-    {
-        ProcessRegularTaints();
-        ProcessPostTaintTaints();
-    }
-
-    private void ProcessRegularTaints()
-    {
-        if (m_initialized && _taintOperations.Count > 0)  // save allocating new list if there is nothing to process
-        {
-            // swizzle a new list into the list location so we can process what's there
-            List<TaintCallbackEntry> oldList;
-            lock (_taintLock)
-            {
-                oldList = _taintOperations;
-                _taintOperations = new List<TaintCallbackEntry>();
-            }
-
-            foreach (TaintCallbackEntry tcbe in oldList)
-            {
-                try
-                {
-                    DetailLog("{0},BSScene.ProcessTaints,doTaint,id={1}", tcbe.originator, tcbe.ident); // DEBUG DEBUG DEBUG
-                    tcbe.callback();
-                }
-                catch (Exception e)
-                {
-                    m_log.ErrorFormat("{0}: ProcessTaints: {1}: Exception: {2}", LogHeader, tcbe.ident, e);
-                }
-            }
-            oldList.Clear();
-        }
-    }
-
-    // Schedule an update to happen after all the regular taints are processed.
-    // Note that new requests for the same operation ("ident") for the same object ("ID")
-    //     will replace any previous operation by the same object.
-    public void PostTaintObject(String ident, uint ID, TaintCallback callback)
-    {
-        string IDAsString = ID.ToString();
-        string uniqueIdent = ident + "-" + IDAsString;
-        lock (_taintLock)
-        {
-            _postTaintOperations[uniqueIdent] = new TaintCallbackEntry(IDAsString, uniqueIdent, callback);
-        }
-
-        return;
-    }
-
-    // Taints that happen after the normal taint processing but before the simulation step.
-    private void ProcessPostTaintTaints()
-    {
-        if (m_initialized && _postTaintOperations.Count > 0)
-        {
-            Dictionary<string, TaintCallbackEntry> oldList;
-            lock (_taintLock)
-            {
-                oldList = _postTaintOperations;
-                _postTaintOperations = new Dictionary<string, TaintCallbackEntry>();
-            }
-
-            foreach (KeyValuePair<string,TaintCallbackEntry> kvp in oldList)
-            {
-                try
-                {
-                    DetailLog("{0},BSScene.ProcessPostTaintTaints,doTaint,id={1}", DetailLogZero, kvp.Key); // DEBUG DEBUG DEBUG
-                    kvp.Value.callback();
-                }
-                catch (Exception e)
-                {
-                    m_log.ErrorFormat("{0}: ProcessPostTaintTaints: {1}: Exception: {2}", LogHeader, kvp.Key, e);
-                }
-            }
-            oldList.Clear();
-        }
-    }
-
-    // Only used for debugging. Does not change state of anything so locking is not necessary.
-    public bool AssertInTaintTime(string whereFrom)
-    {
-        if (!InTaintTime)
-        {
-            DetailLog("{0},BSScene.AssertInTaintTime,NOT IN TAINT TIME,Region={1},Where={2}", DetailLogZero, RegionName, whereFrom);
-            m_log.ErrorFormat("{0} NOT IN TAINT TIME!! Region={1}, Where={2}", LogHeader, RegionName, whereFrom);
-            // Util.PrintCallStack(DetailLog);
-        }
-        return InTaintTime;
-    }
-
-    #endregion // Taints
-
-    #region IPhysicsParameters
-    // Get the list of parameters this physics engine supports
-    public PhysParameterEntry[] GetParameterList()
-    {
-        BSParam.BuildParameterTable();
-        return BSParam.SettableParameters;
-    }
-
-    // Set parameter on a specific or all instances.
-    // Return 'false' if not able to set the parameter.
-    // Setting the value in the m_params block will change the value the physics engine
-    //   will use the next time since it's pinned and shared memory.
-    // Some of the values require calling into the physics engine to get the new
-    //   value activated ('terrainFriction' for instance).
-    public bool SetPhysicsParameter(string parm, string val, uint localID)
-    {
-        bool ret = false;
-
-        BSParam.ParameterDefnBase theParam;
-        if (BSParam.TryGetParameter(parm, out theParam))
-        {
-            // Set the value in the C# code
-            theParam.SetValue(this, val);
-
-            // Optionally set the parameter in the unmanaged code
-            if (theParam.HasSetOnObject)
-            {
-                // update all the localIDs specified
-                // 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
-                List<uint> objectIDs = new List<uint>();
-                switch (localID)
-                {
-                    case PhysParameterEntry.APPLY_TO_NONE:
-                        // This will cause a call into the physical world if some operation is specified (SetOnObject).
-                        objectIDs.Add(TERRAIN_ID);
-                        TaintedUpdateParameter(parm, objectIDs, val);
-                        break;
-                    case PhysParameterEntry.APPLY_TO_ALL:
-                        lock (PhysObjects) objectIDs = new List<uint>(PhysObjects.Keys);
-                        TaintedUpdateParameter(parm, objectIDs, val);
-                        break;
-                    default:
-                        // setting only one localID
-                        objectIDs.Add(localID);
-                        TaintedUpdateParameter(parm, objectIDs, val);
-                        break;
-                }
-            }
-
-            ret = true;
-        }
-        return ret;
-    }
-
-    // schedule the actual updating of the paramter to when the phys engine is not busy
-    private void TaintedUpdateParameter(string parm, List<uint> lIDs, string val)
-    {
-        string xval = val;
-        List<uint> xlIDs = lIDs;
-        string xparm = parm;
-        TaintedObject(DetailLogZero, "BSScene.UpdateParameterSet", delegate() {
-            BSParam.ParameterDefnBase thisParam;
-            if (BSParam.TryGetParameter(xparm, out thisParam))
-            {
-                if (thisParam.HasSetOnObject)
-                {
-                    foreach (uint lID in xlIDs)
-                    {
-                        BSPhysObject theObject = null;
-                        if (PhysObjects.TryGetValue(lID, out theObject))
-                            thisParam.SetOnObject(this, theObject);
-                    }
-                }
-            }
-        });
-    }
-
-    // Get parameter.
-    // Return 'false' if not able to get the parameter.
-    public bool GetPhysicsParameter(string parm, out string value)
-    {
-        string val = String.Empty;
-        bool ret = false;
-        BSParam.ParameterDefnBase theParam;
-        if (BSParam.TryGetParameter(parm, out theParam))
-        {
-            val = theParam.GetValue(this);
-            ret = true;
-        }
-        value = val;
-        return ret;
-    }
-
-    #endregion IPhysicsParameters
-
-    // Invoke the detailed logger and output something if it's enabled.
-    public void DetailLog(string msg, params Object[] args)
-    {
-        PhysicsLogging.Write(msg, args);
-    }
-    // Used to fill in the LocalID when there isn't one. It's the correct number of characters.
-    public const string DetailLogZero = "0000000000";
-
-}
-}
diff --git a/OpenSim/Region/Physics/Manager/PhysicsPluginManager.cs b/OpenSim/Region/Physics/Manager/PhysicsPluginManager.cs
deleted file mode 100644
index ddbe80b..0000000
--- a/OpenSim/Region/Physics/Manager/PhysicsPluginManager.cs
+++ /dev/null
@@ -1,250 +0,0 @@
-/*
- * 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.IO;
-using System.Reflection;
-using Nini.Config;
-using log4net;
-using OpenSim.Framework;
-using OpenMetaverse;
-
-namespace OpenSim.Region.Physics.Manager
-{
-    /// <summary>
-    /// Description of MyClass.
-    /// </summary>
-    public class PhysicsPluginManager
-    {
-        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
-
-        private Dictionary<string, IPhysicsPlugin> _PhysPlugins = new Dictionary<string, IPhysicsPlugin>();
-        private Dictionary<string, IMeshingPlugin> _MeshPlugins = new Dictionary<string, IMeshingPlugin>();
-
-        /// <summary>
-        /// Constructor.
-        /// </summary>
-        public PhysicsPluginManager()
-        {
-            // Load "plugins", that are hard coded and not existing in form of an external lib, and hence always 
-            // available
-            IMeshingPlugin plugHard;
-            plugHard = new ZeroMesherPlugin();
-            _MeshPlugins.Add(plugHard.GetName(), plugHard);
-            
-            m_log.Info("[PHYSICS]: Added meshing engine: " + plugHard.GetName());
-        }
-
-        // Legacy method for simulators before extent was passed
-        public PhysicsScene GetPhysicsScene(string physEngineName, string meshEngineName,
-                                    IConfigSource config, string regionName)
-        {
-            Vector3 extent = new Vector3(Constants.RegionSize, Constants.RegionSize, Constants.RegionHeight);
-            return GetPhysicsScene(physEngineName, meshEngineName, config, regionName, extent);
-        }
-
-        /// <summary>
-        /// Get a physics scene for the given physics engine and mesher.
-        /// </summary>
-        /// <param name="physEngineName"></param>
-        /// <param name="meshEngineName"></param>
-        /// <param name="config"></param>
-        /// <returns></returns>
-        public PhysicsScene GetPhysicsScene(string physEngineName, string meshEngineName,
-                                    IConfigSource config, string regionName, Vector3 regionExtent)
-        {
-            if (String.IsNullOrEmpty(physEngineName))
-            {
-                return PhysicsScene.Null;
-            }
-
-            if (String.IsNullOrEmpty(meshEngineName))
-            {
-                return PhysicsScene.Null;
-            }
-
-            IMesher meshEngine = null;
-            if (_MeshPlugins.ContainsKey(meshEngineName))
-            {
-                m_log.Info("[PHYSICS]: creating meshing engine " + meshEngineName);
-                meshEngine = _MeshPlugins[meshEngineName].GetMesher(config);
-            }
-            else
-            {
-                m_log.WarnFormat("[PHYSICS]: couldn't find meshingEngine: {0}", meshEngineName);
-                throw new ArgumentException(String.Format("couldn't find meshingEngine: {0}", meshEngineName));
-            }
-
-            if (_PhysPlugins.ContainsKey(physEngineName))
-            {
-                m_log.Info("[PHYSICS]: creating " + physEngineName);
-                PhysicsScene result = _PhysPlugins[physEngineName].GetScene(regionName);
-                result.Initialise(meshEngine, config, regionExtent);
-                return result;
-            }
-            else
-            {
-                m_log.WarnFormat("[PHYSICS]: couldn't find physicsEngine: {0}", physEngineName);
-                throw new ArgumentException(String.Format("couldn't find physicsEngine: {0}", physEngineName));
-            }
-        }
-
-        /// <summary>
-        /// Load all plugins in assemblies at the given path
-        /// </summary>
-        /// <param name="pluginsPath"></param>
-        public void LoadPluginsFromAssemblies(string assembliesPath)
-        {
-            // Walk all assemblies (DLLs effectively) and see if they are home
-            // of a plugin that is of interest for us
-            string[] pluginFiles = Directory.GetFiles(assembliesPath, "*.dll");
-
-            for (int i = 0; i < pluginFiles.Length; i++)
-            {
-                LoadPluginsFromAssembly(pluginFiles[i]);
-            }
-        }
-
-        /// <summary>
-        /// Load plugins from an assembly at the given path
-        /// </summary>
-        /// <param name="assemblyPath"></param>
-        public void LoadPluginsFromAssembly(string assemblyPath)
-        {
-            // TODO / NOTE
-            // The assembly named 'OpenSim.Region.Physics.BasicPhysicsPlugin' was loaded from
-            // 'file:///C:/OpenSim/trunk2/bin/Physics/OpenSim.Region.Physics.BasicPhysicsPlugin.dll'
-            // using the LoadFrom context. The use of this context can result in unexpected behavior
-            // for serialization, casting and dependency resolution. In almost all cases, it is recommended
-            // that the LoadFrom context be avoided. This can be done by installing assemblies in the
-            // Global Assembly Cache or in the ApplicationBase directory and using Assembly.
-            // Load when explicitly loading assemblies.
-            Assembly pluginAssembly = null;
-            Type[] types = null;
-
-            try
-            {
-                pluginAssembly = Assembly.LoadFrom(assemblyPath);
-            }
-            catch (Exception ex)
-            {
-                m_log.Error("[PHYSICS]: Failed to load plugin from " + assemblyPath, ex);
-            }
-
-            if (pluginAssembly != null)
-            {
-                try
-                {
-                    types = pluginAssembly.GetTypes();
-                }
-                catch (ReflectionTypeLoadException ex)
-                {
-                    m_log.Error("[PHYSICS]: Failed to enumerate types in plugin from " + assemblyPath + ": " +
-                        ex.LoaderExceptions[0].Message, ex);
-                }
-                catch (Exception ex)
-                {
-                    m_log.Error("[PHYSICS]: Failed to enumerate types in plugin from " + assemblyPath, ex);
-                }
-
-                if (types != null)
-                {
-                    foreach (Type pluginType in types)
-                    {
-                        if (pluginType.IsPublic)
-                        {
-                            if (!pluginType.IsAbstract)
-                            {
-                                Type physTypeInterface = pluginType.GetInterface("IPhysicsPlugin");
-
-                                if (physTypeInterface != null)
-                                {
-                                    IPhysicsPlugin plug =
-                                        (IPhysicsPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
-                                    plug.Init();
-                                    if (!_PhysPlugins.ContainsKey(plug.GetName()))
-                                    {
-                                        _PhysPlugins.Add(plug.GetName(), plug);
-                                        m_log.Info("[PHYSICS]: Added physics engine: " + plug.GetName());
-                                    }
-                                }
-
-                                Type meshTypeInterface = pluginType.GetInterface("IMeshingPlugin");
-
-                                if (meshTypeInterface != null)
-                                {
-                                    IMeshingPlugin plug =
-                                        (IMeshingPlugin)Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
-                                    if (!_MeshPlugins.ContainsKey(plug.GetName()))
-                                    {
-                                        _MeshPlugins.Add(plug.GetName(), plug);
-                                        m_log.Info("[PHYSICS]: Added meshing engine: " + plug.GetName());
-                                    }
-                                }
-
-                                physTypeInterface = null;
-                                meshTypeInterface = null;
-                            }
-                        }
-                    }
-                }
-            }
-
-            pluginAssembly = null;
-        }
-
-        //---
-        public static void PhysicsPluginMessage(string message, bool isWarning)
-        {
-            if (isWarning)
-            {
-                m_log.Warn("[PHYSICS]: " + message);
-            }
-            else
-            {
-                m_log.Info("[PHYSICS]: " + message);
-            }
-        }
-
-        //---
-    }
-
-    public interface IPhysicsPlugin
-    {
-        bool Init();
-        PhysicsScene GetScene(String sceneIdentifier);
-        string GetName();
-        void Dispose();
-    }
-
-    public interface IMeshingPlugin
-    {
-        string GetName();
-        IMesher GetMesher(IConfigSource config);
-    }
-}
diff --git a/OpenSim/Region/Physics/Meshing/Properties/AssemblyInfo.cs b/OpenSim/Region/Physics/Meshing/Properties/AssemblyInfo.cs
deleted file mode 100644
index ec968c0..0000000
--- a/OpenSim/Region/Physics/Meshing/Properties/AssemblyInfo.cs
+++ /dev/null
@@ -1,33 +0,0 @@
-using System.Reflection;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-
-// General Information about an assembly is controlled through the following 
-// set of attributes. Change these attribute values to modify the information
-// associated with an assembly.
-[assembly: AssemblyTitle("OpenSim.Region.Physics.Meshing")]
-[assembly: AssemblyDescription("")]
-[assembly: AssemblyConfiguration("")]
-[assembly: AssemblyCompany("http://opensimulator.org")]
-[assembly: AssemblyProduct("OpenSim")]
-[assembly: AssemblyCopyright("OpenSimulator developers")]
-[assembly: AssemblyTrademark("")]
-[assembly: AssemblyCulture("")]
-
-// Setting ComVisible to false makes the types in this assembly not visible 
-// to COM components.  If you need to access a type in this assembly from 
-// COM, set the ComVisible attribute to true on that type.
-[assembly: ComVisible(false)]
-
-// The following GUID is for the ID of the typelib if this project is exposed to COM
-[assembly: Guid("4b7e35c2-a9dd-4b10-b778-eb417f4f6884")]
-
-// Version information for an assembly consists of the following four values:
-//
-//      Major Version
-//      Minor Version 
-//      Build Number
-//      Revision
-//
-[assembly: AssemblyVersion("0.8.2.*")]
-
diff --git a/OpenSim/Region/Physics/OdePlugin/OdePlugin.cs b/OpenSim/Region/Physics/OdePlugin/OdePlugin.cs
deleted file mode 100644
index 7e652fc..0000000
--- a/OpenSim/Region/Physics/OdePlugin/OdePlugin.cs
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * 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.Reflection;
-using System.Runtime.InteropServices;
-using System.Threading;
-using System.IO;
-using System.Diagnostics;
-using log4net;
-using Nini.Config;
-using Ode.NET;
-using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-using OpenMetaverse;
-
-namespace OpenSim.Region.Physics.OdePlugin
-{
-    /// <summary>
-    /// ODE plugin
-    /// </summary>
-    public class OdePlugin : IPhysicsPlugin
-    {
-//        private static readonly log4net.ILog m_log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
-
-        private OdeScene m_scene;
-
-        public bool Init()
-        {
-            return true;
-        }
-
-        public PhysicsScene GetScene(String sceneIdentifier)
-        {
-            if (m_scene == null)
-            {
-                // We do this so that OpenSimulator on Windows loads the correct native ODE library depending on whether
-                // it's running as a 32-bit process or a 64-bit one.  By invoking LoadLibary here, later DLLImports
-                // will find it already loaded later on.
-                //
-                // This isn't necessary for other platforms (e.g. Mac OSX and Linux) since the DLL used can be
-                // controlled in Ode.NET.dll.config
-                if (Util.IsWindows())
-                    Util.LoadArchSpecificWindowsDll("ode.dll");
-
-                // Initializing ODE only when a scene is created allows alternative ODE plugins to co-habit (according to
-                // http://opensimulator.org/mantis/view.php?id=2750).
-                d.InitODE();
-                
-                m_scene = new OdeScene(GetName(), sceneIdentifier);
-            }
-
-            return m_scene;
-        }
-
-        public string GetName()
-        {
-            return ("OpenDynamicsEngine");
-        }
-
-        public void Dispose()
-        {
-        }
-    }
-}
\ No newline at end of file
diff --git a/OpenSim/Region/Physics/POSPlugin/POSPlugin.cs b/OpenSim/Region/Physics/POSPlugin/POSPlugin.cs
deleted file mode 100644
index ed086dd..0000000
--- a/OpenSim/Region/Physics/POSPlugin/POSPlugin.cs
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * 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 Nini.Config;
-using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-
-namespace OpenSim.Region.Physics.POSPlugin
-{
-    /// <summary>
-    /// for now will be a very POS physics engine
-    /// </summary>
-    public class POSPlugin : IPhysicsPlugin
-    {
-        public POSPlugin()
-        {
-        }
-
-        public bool Init()
-        {
-            return true;
-        }
-
-        public PhysicsScene GetScene(string sceneIdentifier)
-        {
-            return new POSScene(GetName(), sceneIdentifier);
-        }
-
-        public string GetName()
-        {
-            return ("POS");
-        }
-
-        public void Dispose()
-        {
-        }
-    }
-}
diff --git a/OpenSim/Region/Physics/BasicPhysicsPlugin/AssemblyInfo.cs b/OpenSim/Region/PhysicsModules/BasicPhysics/AssemblyInfo.cs
index 7d054dd..1765ae0 100644
--- a/OpenSim/Region/Physics/BasicPhysicsPlugin/AssemblyInfo.cs
+++ b/OpenSim/Region/PhysicsModules/BasicPhysics/AssemblyInfo.cs
@@ -27,6 +27,7 @@
 
 using System.Reflection;
 using System.Runtime.InteropServices;
+using Mono.Addins;
 
 // Information about this assembly is defined by the following
 // attributes.
@@ -34,11 +35,11 @@ using System.Runtime.InteropServices;
 // change them to the information which is associated with the assembly
 // you compile.
 
-[assembly : AssemblyTitle("BasicPhysicsPlugin")]
+[assembly : AssemblyTitle("BasicPhysicsModule")]
 [assembly : AssemblyDescription("")]
 [assembly : AssemblyConfiguration("")]
 [assembly : AssemblyCompany("http://opensimulator.org")]
-[assembly : AssemblyProduct("BasicPhysicsPlugin")]
+[assembly : AssemblyProduct("BasicPhysicsModule")]
 [assembly : AssemblyCopyright("Copyright (c) OpenSimulator.org Developers")]
 [assembly : AssemblyTrademark("")]
 [assembly : AssemblyCulture("")]
@@ -56,3 +57,6 @@ using System.Runtime.InteropServices;
 // numbers with the '*' character (the default):
 
 [assembly : AssemblyVersion("0.8.2.*")]
+
+[assembly: Addin("OpenSim.Region.PhysicsModule.BasicPhysics", OpenSim.VersionInfo.VersionNumber)]
+[assembly: AddinDependency("OpenSim.Region.Framework", OpenSim.VersionInfo.VersionNumber)]
diff --git a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsActor.cs b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsActor.cs
index 43fba7b..e7b30ba 100644
--- a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsActor.cs
+++ b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsActor.cs
@@ -30,9 +30,9 @@ using System.Collections.Generic;
 using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.BasicPhysicsPlugin
+namespace OpenSim.Region.PhysicsModule.BasicPhysics
 {
     public class BasicActor : PhysicsActor
     {
diff --git a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsPrim.cs b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsPrim.cs
index dfe4c19..5383f1b 100644
--- a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsPrim.cs
+++ b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsPrim.cs
@@ -30,9 +30,9 @@ using System.Collections.Generic;
 using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.BasicPhysicsPlugin
+namespace OpenSim.Region.PhysicsModule.BasicPhysics
 {
     public class BasicPhysicsPrim : PhysicsActor
     {
diff --git a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsScene.cs b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsScene.cs
index 0d28c8e..ac2c1f3 100644
--- a/OpenSim/Region/Physics/BasicPhysicsPlugin/BasicPhysicsScene.cs
+++ b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsScene.cs
@@ -28,11 +28,14 @@
 using System;
 using System.Collections.Generic;
 using Nini.Config;
+using Mono.Addins;
 using OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
 
-namespace OpenSim.Region.Physics.BasicPhysicsPlugin
+namespace OpenSim.Region.PhysicsModule.BasicPhysics
 {
     /// <summary>
     /// This is an incomplete extremely basic physics implementation
@@ -41,32 +44,74 @@ namespace OpenSim.Region.Physics.BasicPhysicsPlugin
     /// Not useful for anything at the moment apart from some regression testing in other components where some form
     /// of physics plugin is needed.
     /// </remarks>
-    public class BasicScene : PhysicsScene
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "BasicPhysicsScene")]
+    public class BasicScene : PhysicsScene, INonSharedRegionModule
     {
         private List<BasicActor> _actors = new List<BasicActor>();
         private List<BasicPhysicsPrim> _prims = new List<BasicPhysicsPrim>();
         private float[] _heightMap;
         private Vector3 m_regionExtent;
 
+        private bool m_Enabled = false;
+
         //protected internal string sceneIdentifier;
+        #region INonSharedRegionModule
+        public string Name
+        {
+            get { return "basicphysics"; }
+        }
 
-        public BasicScene(string engineType, string _sceneIdentifier)
+        public Type ReplaceableInterface
         {
-            EngineType = engineType;
-            Name = EngineType + "/" + _sceneIdentifier;
-            //sceneIdentifier = _sceneIdentifier;
+            get { return null; }
         }
 
-        public override void Initialise(IMesher meshmerizer, IConfigSource config)
+        public void Initialise(IConfigSource source)
         {
-            throw new Exception("Should not be called.");
+            // TODO: Move this out of Startup
+            IConfig config = source.Configs["Startup"];
+            if (config != null)
+            {
+                string physics = config.GetString("physics", string.Empty);
+                if (physics == Name)
+                    m_Enabled = true;
+            }
+
         }
 
-        public override void Initialise(IMesher meshmerizer, IConfigSource config, Vector3 regionExtent)
+        public void Close()
         {
-            m_regionExtent = regionExtent;
         }
 
+        public void AddRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            EngineType = Name;
+            PhysicsSceneName = EngineType + "/" + scene.RegionInfo.RegionName;
+
+            scene.RegisterModuleInterface<PhysicsScene>(this);
+            m_regionExtent = new Vector3(scene.RegionInfo.RegionSizeX, scene.RegionInfo.RegionSizeY, scene.RegionInfo.RegionSizeZ);
+            base.Initialise(scene.PhysicsRequestAsset,
+                (scene.Heightmap != null ? scene.Heightmap.GetFloatsSerialised() : new float[scene.RegionInfo.RegionSizeX * scene.RegionInfo.RegionSizeY]),
+                (float)scene.RegionInfo.RegionSettings.WaterHeight);
+
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+        #endregion
+
         public override void Dispose() {}
 
         public override PhysicsActor AddPrimShape(string primName, PrimitiveBaseShape pbs, Vector3 position,
@@ -119,8 +164,8 @@ namespace OpenSim.Region.Physics.BasicPhysicsPlugin
                 Vector3 actorPosition = actor.Position;
                 Vector3 actorVelocity = actor.Velocity;
 
-//                Console.WriteLine(
-//                    "Processing actor {0}, starting pos {1}, starting vel {2}", i, actorPosition, actorVelocity);
+                //Console.WriteLine(
+                //    "Processing actor {0}, starting pos {1}, starting vel {2}", i, actorPosition, actorVelocity);
 
                 actorPosition.X += actor.Velocity.X * timeStep;
                 actorPosition.Y += actor.Velocity.Y * timeStep;
@@ -206,5 +251,6 @@ namespace OpenSim.Region.Physics.BasicPhysicsPlugin
             Dictionary<uint, float> returncolliders = new Dictionary<uint, float>();
             return returncolliders;
         }
+
     }
 }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs b/OpenSim/Region/PhysicsModules/BulletS/BSAPIUnman.cs
index 3bd81d4..c4a923c 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSAPIUnman.cs
@@ -35,7 +35,7 @@ using OpenSim.Framework;
 
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public sealed class BSAPIUnman : BSAPITemplate
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs b/OpenSim/Region/PhysicsModules/BulletS/BSAPIXNA.cs
index 741f8db..887311d 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSAPIXNA.cs
@@ -40,7 +40,7 @@ using BulletXNA.BulletCollision;
 using BulletXNA.BulletDynamics;
 using BulletXNA.BulletCollision.CollisionDispatch;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public sealed class BSAPIXNA : BSAPITemplate
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSActorAvatarMove.cs b/OpenSim/Region/PhysicsModules/BulletS/BSActorAvatarMove.cs
index bde4557..0191893 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSActorAvatarMove.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSActorAvatarMove.cs
@@ -31,11 +31,11 @@ using System.Linq;
 using System.Text;
 
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSActorAvatarMove : BSActor
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSActorHover.cs b/OpenSim/Region/PhysicsModules/BulletS/BSActorHover.cs
index e54c27b..7ff171e 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSActorHover.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSActorHover.cs
@@ -30,11 +30,11 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSActorHover : BSActor
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSActorLockAxis.cs b/OpenSim/Region/PhysicsModules/BulletS/BSActorLockAxis.cs
index 3b3c161..78c1b6a 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSActorLockAxis.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSActorLockAxis.cs
@@ -32,7 +32,7 @@ using System.Text;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSActorLockAxis : BSActor
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSActorMoveToTarget.cs b/OpenSim/Region/PhysicsModules/BulletS/BSActorMoveToTarget.cs
index 1145006..3db8f2c 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSActorMoveToTarget.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSActorMoveToTarget.cs
@@ -30,11 +30,11 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSActorMoveToTarget : BSActor
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSActorSetForce.cs b/OpenSim/Region/PhysicsModules/BulletS/BSActorSetForce.cs
index 4e81363..ecb4b7f 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSActorSetForce.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSActorSetForce.cs
@@ -30,11 +30,11 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSActorSetForce : BSActor
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSActorSetTorque.cs b/OpenSim/Region/PhysicsModules/BulletS/BSActorSetTorque.cs
index 79e1d38..a1cf4db 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSActorSetTorque.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSActorSetTorque.cs
@@ -30,11 +30,11 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSActorSetTorque : BSActor
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSActors.cs b/OpenSim/Region/PhysicsModules/BulletS/BSActors.cs
index 7f45e2c..851347b 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSActors.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSActors.cs
@@ -28,7 +28,7 @@ using System;
 using System.Collections.Generic;
 using System.Text;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSActorCollection
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs b/OpenSim/Region/PhysicsModules/BulletS/BSApiTemplate.cs
index 8491c0f..7756b10 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSApiTemplate.cs
@@ -31,7 +31,7 @@ using System.Security;
 using System.Text;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin {
+namespace OpenSim.Region.PhysicsModule.BulletS {
 
     // Constraint type values as defined by Bullet
 public enum ConstraintType : int
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/PhysicsModules/BulletS/BSCharacter.cs
index 9c3f160..83fc3a6 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSCharacter.cs
@@ -30,9 +30,9 @@ using System.Reflection;
 using log4net;
 using OMV = OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public sealed class BSCharacter : BSPhysObject
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs b/OpenSim/Region/PhysicsModules/BulletS/BSConstraint.cs
index b47e9a8..e42e868 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSConstraint.cs
@@ -29,7 +29,7 @@ using System.Collections.Generic;
 using System.Text;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public abstract class BSConstraint : IDisposable
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint6Dof.cs b/OpenSim/Region/PhysicsModules/BulletS/BSConstraint6Dof.cs
index 7fcb75c..4bcde2b 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint6Dof.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSConstraint6Dof.cs
@@ -29,7 +29,7 @@ using System.Collections.Generic;
 using System.Text;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public class BSConstraint6Dof : BSConstraint
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintCollection.cs
index 5c8d94e..5746ac1 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintCollection.cs
@@ -30,7 +30,7 @@ using System.Text;
 using log4net;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public sealed class BSConstraintCollection : IDisposable
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintConeTwist.cs b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintConeTwist.cs
index 7a76a9a..e7566a8 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintConeTwist.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintConeTwist.cs
@@ -29,7 +29,7 @@ using System.Collections.Generic;
 using System.Text;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public sealed class BSConstraintConeTwist : BSConstraint
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintHinge.cs b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintHinge.cs
index ed89f63..d20538d 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintHinge.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintHinge.cs
@@ -29,7 +29,7 @@ using System.Collections.Generic;
 using System.Text;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public sealed class BSConstraintHinge : BSConstraint
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintSlider.cs b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintSlider.cs
index 37cfa07..83d42af 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintSlider.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintSlider.cs
@@ -29,7 +29,7 @@ using System.Collections.Generic;
 using System.Text;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public sealed class BSConstraintSlider : BSConstraint
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintSpring.cs b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintSpring.cs
index 8e7ddff..563a1b1 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintSpring.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSConstraintSpring.cs
@@ -29,7 +29,7 @@ using System.Collections.Generic;
 using System.Text;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public sealed class BSConstraintSpring : BSConstraint6Dof
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs b/OpenSim/Region/PhysicsModules/BulletS/BSDynamics.cs
index c6d6331..0fc5577 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSDynamics.cs
@@ -36,9 +36,9 @@ using System.Reflection;
 using System.Runtime.InteropServices;
 using OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
     public sealed class BSDynamics : BSActor
     {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs b/OpenSim/Region/PhysicsModules/BulletS/BSLinkset.cs
index 87eba33..8312239 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSLinkset.cs
@@ -30,7 +30,7 @@ using System.Text;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public abstract class BSLinkset
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs b/OpenSim/Region/PhysicsModules/BulletS/BSLinksetCompound.cs
index cae9efa..953ddee 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSLinksetCompound.cs
@@ -32,7 +32,7 @@ using OpenSim.Framework;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public sealed class BSLinksetCompound : BSLinkset
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs b/OpenSim/Region/PhysicsModules/BulletS/BSLinksetConstraints.cs
index 4384cdc..c4b4c86 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSLinksetConstraints.cs
@@ -28,11 +28,9 @@ using System;
 using System.Collections.Generic;
 using System.Text;
 
-using OpenSim.Region.OptionalModules.Scripting;
-
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public sealed class BSLinksetConstraints : BSLinkset
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSMaterials.cs b/OpenSim/Region/PhysicsModules/BulletS/BSMaterials.cs
index ee77d6e..0e44d03 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSMaterials.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSMaterials.cs
@@ -30,7 +30,7 @@ using System.Text;
 using System.Reflection;
 using Nini.Config;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 public struct MaterialAttributes
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSMotors.cs b/OpenSim/Region/PhysicsModules/BulletS/BSMotors.cs
index 7693195..2faf2d4 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSMotors.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSMotors.cs
@@ -31,7 +31,7 @@ using System.Text;
 using OpenMetaverse;
 using OpenSim.Framework;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public abstract class BSMotor
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs b/OpenSim/Region/PhysicsModules/BulletS/BSParam.cs
index 6d46fe6..c296008 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSParam.cs
@@ -29,12 +29,12 @@ using System.Collections.Generic;
 using System.Reflection;
 using System.Text;
 
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using OpenMetaverse;
 using Nini.Config;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public static class BSParam
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs b/OpenSim/Region/PhysicsModules/BulletS/BSPhysObject.cs
index 90da7a6..da3fc18 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSPhysObject.cs
@@ -30,9 +30,9 @@ using System.Text;
 
 using OMV = OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 /*
  * Class to wrap all objects.
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs b/OpenSim/Region/PhysicsModules/BulletS/BSPrim.cs
index a00991f..6f27ac7 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSPrim.cs
@@ -32,11 +32,10 @@ using System.Xml;
 using log4net;
 using OMV = OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-using OpenSim.Region.Physics.ConvexDecompositionDotNet;
-using OpenSim.Region.OptionalModules.Scripting; // for ExtendedPhysics
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
     [Serializable]
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrimDisplaced.cs b/OpenSim/Region/PhysicsModules/BulletS/BSPrimDisplaced.cs
index 2eb1440..d8ed56b 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrimDisplaced.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSPrimDisplaced.cs
@@ -31,11 +31,11 @@ using System.Reflection;
 using System.Runtime.InteropServices;
 using OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSPrimDisplaced : BSPrim
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrimLinkable.cs b/OpenSim/Region/PhysicsModules/BulletS/BSPrimLinkable.cs
index 430d645..55b5da0 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrimLinkable.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSPrimLinkable.cs
@@ -30,11 +30,10 @@ using System.Linq;
 using System.Text;
 
 using OpenSim.Framework;
-using OpenSim.Region.OptionalModules.Scripting;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public class BSPrimLinkable : BSPrimDisplaced
 {
@@ -72,7 +71,7 @@ public class BSPrimLinkable : BSPrimDisplaced
         base.Destroy();
     }
 
-    public override void link(Manager.PhysicsActor obj)
+    public override void link(OpenSim.Region.PhysicsModules.SharedBase.PhysicsActor obj)
     {
         BSPrimLinkable parent = obj as BSPrimLinkable;
         if (parent != null)
diff --git a/OpenSim/Region/PhysicsModules/BulletS/BSScene.cs b/OpenSim/Region/PhysicsModules/BulletS/BSScene.cs
new file mode 100644
index 0000000..452ce55
--- /dev/null
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSScene.cs
@@ -0,0 +1,1333 @@
+/*
+ * 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.Linq;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Text;
+using System.Threading;
+using OpenSim.Framework;
+using OpenSim.Framework.Monitoring;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using Nini.Config;
+using log4net;
+using OpenMetaverse;
+using Mono.Addins;
+
+namespace OpenSim.Region.PhysicsModule.BulletS
+{
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "BulletSPhysicsScene")]
+    public sealed class BSScene : PhysicsScene, IPhysicsParameters, INonSharedRegionModule
+    {
+        internal static readonly ILog m_log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+        internal static readonly string LogHeader = "[BULLETS SCENE]";
+
+        private bool m_Enabled = false;
+        private IConfigSource m_Config;
+
+        // The name of the region we're working for.
+        public string RegionName { get; private set; }
+
+        public string BulletSimVersion = "?";
+
+        // The handle to the underlying managed or unmanaged version of Bullet being used.
+        public string BulletEngineName { get; private set; }
+        public BSAPITemplate PE;
+
+        // If the physics engine is running on a separate thread
+        public Thread m_physicsThread;
+
+        public Dictionary<uint, BSPhysObject> PhysObjects;
+        public BSShapeCollection Shapes;
+
+        // Keeping track of the objects with collisions so we can report begin and end of a collision
+        public HashSet<BSPhysObject> ObjectsWithCollisions = new HashSet<BSPhysObject>();
+        public HashSet<BSPhysObject> ObjectsWithNoMoreCollisions = new HashSet<BSPhysObject>();
+
+        // All the collision processing is protected with this lock object
+        public Object CollisionLock = new Object();
+
+        // Properties are updated here
+        public Object UpdateLock = new Object();
+        public HashSet<BSPhysObject> ObjectsWithUpdates = new HashSet<BSPhysObject>();
+
+        // Keep track of all the avatars so we can send them a collision event
+        //    every tick so OpenSim will update its animation.
+        private HashSet<BSPhysObject> AvatarsInScene = new HashSet<BSPhysObject>();
+        private Object AvatarsInSceneLock = new Object();
+
+        // let my minuions use my logger
+        public ILog Logger { get { return m_log; } }
+
+        public IMesher mesher;
+        public uint WorldID { get; private set; }
+        public BulletWorld World { get; private set; }
+
+        // All the constraints that have been allocated in this instance.
+        public BSConstraintCollection Constraints { get; private set; }
+
+        // Simulation parameters
+        //internal float m_physicsStepTime;   // if running independently, the interval simulated by default
+
+        internal int m_maxSubSteps;
+        internal float m_fixedTimeStep;
+
+        internal float m_simulatedTime;     // the time simulated previously. Used for physics framerate calc.
+
+        internal long m_simulationStep = 0; // The current simulation step.
+        public long SimulationStep { get { return m_simulationStep; } }
+        // A number to use for SimulationStep that is probably not any step value
+        // Used by the collision code (which remembers the step when a collision happens) to remember not any simulation step.
+        public static long NotASimulationStep = -1234;
+
+        internal float LastTimeStep { get; private set; }   // The simulation time from the last invocation of Simulate()
+
+        internal float NominalFrameRate { get; set; }       // Parameterized ideal frame rate that simulation is scaled to
+
+        // Physical objects can register for prestep or poststep events
+        public delegate void PreStepAction(float timeStep);
+        public delegate void PostStepAction(float timeStep);
+        public event PreStepAction BeforeStep;
+        public event PostStepAction AfterStep;
+
+        // 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
+        public int SimulationNowTime { get; private set; }
+
+        // True if initialized and ready to do simulation steps
+        private bool m_initialized = false;
+
+        // Flag which is true when processing taints.
+        // Not guaranteed to be correct all the time (don't depend on this) but good for debugging.
+        public bool InTaintTime { get; private set; }
+
+        // Pinned memory used to pass step information between managed and unmanaged
+        internal int m_maxCollisionsPerFrame;
+        internal CollisionDesc[] m_collisionArray;
+
+        internal int m_maxUpdatesPerFrame;
+        internal EntityProperties[] m_updateArray;
+
+        /// <summary>
+        /// Used to control physics simulation timing if Bullet is running on its own thread.
+        /// </summary>
+        private ManualResetEvent m_updateWaitEvent;
+
+        public const uint TERRAIN_ID = 0;       // OpenSim senses terrain with a localID of zero
+        public const uint GROUNDPLANE_ID = 1;
+        public const uint CHILDTERRAIN_ID = 2;  // Terrain allocated based on our mega-prim childre start here
+
+        public float SimpleWaterLevel { get; set; }
+        public BSTerrainManager TerrainManager { get; private set; }
+
+        public ConfigurationParameters Params
+        {
+            get { return UnmanagedParams[0]; }
+        }
+        public Vector3 DefaultGravity
+        {
+            get { return new Vector3(0f, 0f, Params.gravity); }
+        }
+        // Just the Z value of the gravity
+        public float DefaultGravityZ
+        {
+            get { return Params.gravity; }
+        }
+
+        // When functions in the unmanaged code must be called, it is only
+        //   done at a known time just before the simulation step. The taint
+        //   system saves all these function calls and executes them in
+        //   order before the simulation.
+        public delegate void TaintCallback();
+        private struct TaintCallbackEntry
+        {
+            public String originator;
+            public String ident;
+            public TaintCallback callback;
+            public TaintCallbackEntry(string pIdent, TaintCallback pCallBack)
+            {
+                originator = BSScene.DetailLogZero;
+                ident = pIdent;
+                callback = pCallBack;
+            }
+            public TaintCallbackEntry(string pOrigin, string pIdent, TaintCallback pCallBack)
+            {
+                originator = pOrigin;
+                ident = pIdent;
+                callback = pCallBack;
+            }
+        }
+        private Object _taintLock = new Object();   // lock for using the next object
+        private List<TaintCallbackEntry> _taintOperations;
+        private Dictionary<string, TaintCallbackEntry> _postTaintOperations;
+        private List<TaintCallbackEntry> _postStepOperations;
+
+        // A pointer to an instance if this structure is passed to the C++ code
+        // Used to pass basic configuration values to the unmanaged code.
+        internal ConfigurationParameters[] UnmanagedParams;
+
+        // Sometimes you just have to log everything.
+        public LogWriter PhysicsLogging;
+        private bool m_physicsLoggingEnabled;
+        private string m_physicsLoggingDir;
+        private string m_physicsLoggingPrefix;
+        private int m_physicsLoggingFileMinutes;
+        private bool m_physicsLoggingDoFlush;
+        private bool m_physicsPhysicalDumpEnabled;
+        public int PhysicsMetricDumpFrames { get; set; }
+        // 'true' of the vehicle code is to log lots of details
+        public bool VehicleLoggingEnabled { get; private set; }
+        public bool VehiclePhysicalLoggingEnabled { get; private set; }
+
+        #region INonSharedRegionModule
+        public string Name
+        {
+            get { return "BulletSim"; }
+        }
+
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
+
+        public void Initialise(IConfigSource source)
+        {
+            // TODO: Move this out of Startup
+            IConfig config = source.Configs["Startup"];
+            if (config != null)
+            {
+                string physics = config.GetString("physics", string.Empty);
+                if (physics == Name)
+                {
+                    m_Enabled = true;
+                    m_Config = source;
+                }
+            }
+
+        }
+
+        public void Close()
+        {
+        }
+
+        public void AddRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            EngineType = Name;
+            RegionName = scene.RegionInfo.RegionName;
+            PhysicsSceneName = EngineType + "/" + RegionName;
+
+            scene.RegisterModuleInterface<PhysicsScene>(this);
+            Vector3 extent = new Vector3(scene.RegionInfo.RegionSizeX, scene.RegionInfo.RegionSizeY, scene.RegionInfo.RegionSizeZ);
+            Initialise(m_Config, extent);
+
+            base.Initialise(scene.PhysicsRequestAsset,
+                (scene.Heightmap != null ? scene.Heightmap.GetFloatsSerialised() : new float[scene.RegionInfo.RegionSizeX * scene.RegionInfo.RegionSizeY]),
+                (float)scene.RegionInfo.RegionSettings.WaterHeight);
+
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            mesher = scene.RequestModuleInterface<IMesher>();
+            if (mesher == null)
+                m_log.WarnFormat("{0} No mesher. Things will not work well.", LogHeader);
+
+            scene.PhysicsEnabled = true;
+        }
+        #endregion
+
+        #region Initialization
+
+        private void Initialise(IConfigSource config, Vector3 regionExtent)
+        {
+            _taintOperations = new List<TaintCallbackEntry>();
+            _postTaintOperations = new Dictionary<string, TaintCallbackEntry>();
+            _postStepOperations = new List<TaintCallbackEntry>();
+            PhysObjects = new Dictionary<uint, BSPhysObject>();
+            Shapes = new BSShapeCollection(this);
+
+            m_simulatedTime = 0f;
+            LastTimeStep = 0.1f;
+
+            // Allocate pinned memory to pass parameters.
+            UnmanagedParams = new ConfigurationParameters[1];
+
+            // Set default values for physics parameters plus any overrides from the ini file
+            GetInitialParameterValues(config);
+
+            // Force some parameters to values depending on other configurations
+            // Only use heightmap terrain implementation if terrain larger than legacy size
+            if ((uint)regionExtent.X > Constants.RegionSize || (uint)regionExtent.Y > Constants.RegionSize)
+            {
+                m_log.WarnFormat("{0} Forcing terrain implementation to heightmap for large region", LogHeader);
+                BSParam.TerrainImplementation = (float)BSTerrainPhys.TerrainImplementation.Heightmap;
+            }
+
+            // Get the connection to the physics engine (could be native or one of many DLLs)
+            PE = SelectUnderlyingBulletEngine(BulletEngineName);
+
+            // 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 LogWriter(m_physicsLoggingDir, m_physicsLoggingPrefix, m_physicsLoggingFileMinutes, m_physicsLoggingDoFlush);
+                PhysicsLogging.ErrorLogger = m_log; // for DEBUG. Let's the logger output its own error messages.
+            }
+            else
+            {
+                PhysicsLogging = new LogWriter();
+            }
+
+            // Allocate memory for returning of the updates and collisions from the physics engine
+            m_collisionArray = new CollisionDesc[m_maxCollisionsPerFrame];
+            m_updateArray = new EntityProperties[m_maxUpdatesPerFrame];
+
+            // The bounding box for the simulated world. The origin is 0,0,0 unless we're
+            //    a child in a mega-region.
+            // Bullet actually doesn't care about the extents of the simulated
+            //    area. It tracks active objects no matter where they are.
+            Vector3 worldExtent = regionExtent;
+
+            World = PE.Initialize(worldExtent, Params, m_maxCollisionsPerFrame, ref m_collisionArray, m_maxUpdatesPerFrame, ref m_updateArray);
+
+            Constraints = new BSConstraintCollection(World);
+
+            TerrainManager = new BSTerrainManager(this, worldExtent);
+            TerrainManager.CreateInitialGroundPlaneAndTerrain();
+
+            // Put some informational messages into the log file.
+            m_log.InfoFormat("{0} Linksets implemented with {1}", LogHeader, (BSLinkset.LinksetImplementation)BSParam.LinksetImplementation);
+
+            InTaintTime = false;
+            m_initialized = true;
+
+            // If the physics engine runs on its own thread, start same.
+            if (BSParam.UseSeparatePhysicsThread)
+            {
+                // The physics simulation should happen independently of the heartbeat loop
+                m_physicsThread 
+                    = WorkManager.StartThread(
+                        BulletSPluginPhysicsThread, 
+                        string.Format("{0} ({1})", BulletEngineName, RegionName), 
+                        ThreadPriority.Normal, 
+                        true, 
+                        true);
+            }
+        }
+
+        // All default parameter values are set here. There should be no values set in the
+        // variable definitions.
+        private void GetInitialParameterValues(IConfigSource config)
+        {
+            ConfigurationParameters parms = new ConfigurationParameters();
+            UnmanagedParams[0] = parms;
+
+            BSParam.SetParameterDefaultValues(this);
+
+            if (config != null)
+            {
+                // If there are specifications in the ini file, use those values
+                IConfig pConfig = config.Configs["BulletSim"];
+                if (pConfig != null)
+                {
+                    BSParam.SetParameterConfigurationValues(this, pConfig);
+
+                    // There are two Bullet implementations to choose from
+                    BulletEngineName = pConfig.GetString("BulletEngine", "BulletUnmanaged");
+
+                    // Very detailed logging for physics debugging
+                    // TODO: the boolean values can be moved to the normal parameter processing.
+                    m_physicsLoggingEnabled = pConfig.GetBoolean("PhysicsLoggingEnabled", false);
+                    m_physicsLoggingDir = pConfig.GetString("PhysicsLoggingDir", ".");
+                    m_physicsLoggingPrefix = pConfig.GetString("PhysicsLoggingPrefix", "physics-%REGIONNAME%-");
+                    m_physicsLoggingFileMinutes = pConfig.GetInt("PhysicsLoggingFileMinutes", 5);
+                    m_physicsLoggingDoFlush = pConfig.GetBoolean("PhysicsLoggingDoFlush", false);
+                    m_physicsPhysicalDumpEnabled = pConfig.GetBoolean("PhysicsPhysicalDumpEnabled", false);
+                    // Very detailed logging for vehicle debugging
+                    VehicleLoggingEnabled = pConfig.GetBoolean("VehicleLoggingEnabled", false);
+                    VehiclePhysicalLoggingEnabled = pConfig.GetBoolean("VehiclePhysicalLoggingEnabled", false);
+
+                    // Do any replacements in the parameters
+                    m_physicsLoggingPrefix = m_physicsLoggingPrefix.Replace("%REGIONNAME%", RegionName);
+                }
+                else
+                {
+                    // Nothing in the configuration INI file so assume unmanaged and other defaults.
+                    BulletEngineName = "BulletUnmanaged";
+                    m_physicsLoggingEnabled = false;
+                    VehicleLoggingEnabled = false;
+                }
+
+                // The material characteristics.
+                BSMaterials.InitializeFromDefaults(Params);
+                if (pConfig != null)
+                {
+                    // Let the user add new and interesting material property values.
+                    BSMaterials.InitializefromParameters(pConfig);
+                }
+            }
+        }
+
+        // A helper function that handles a true/false parameter and returns the proper float number encoding
+        float ParamBoolean(IConfig config, string parmName, float deflt)
+        {
+            float ret = deflt;
+            if (config.Contains(parmName))
+            {
+                ret = ConfigurationParameters.numericFalse;
+                if (config.GetBoolean(parmName, false))
+                {
+                    ret = ConfigurationParameters.numericTrue;
+                }
+            }
+            return ret;
+        }
+
+        // Select the connection to the actual Bullet implementation.
+        // The main engine selection is the engineName up to the first hypen.
+        // So "Bullet-2.80-OpenCL-Intel" specifies the 'bullet' class here and the whole name
+        //     is passed to the engine to do its special selection, etc.
+        private BSAPITemplate SelectUnderlyingBulletEngine(string engineName)
+        {
+            // For the moment, do a simple switch statement.
+            // Someday do fancyness with looking up the interfaces in the assembly.
+            BSAPITemplate ret = null;
+
+            string selectionName = engineName.ToLower();
+            int hyphenIndex = engineName.IndexOf("-");
+            if (hyphenIndex > 0)
+                selectionName = engineName.ToLower().Substring(0, hyphenIndex - 1);
+
+            switch (selectionName)
+            {
+                case "bullet":
+                case "bulletunmanaged":
+                    ret = new BSAPIUnman(engineName, this);
+                    break;
+                case "bulletxna":
+                    ret = new BSAPIXNA(engineName, this);
+                    // Disable some features that are not implemented in BulletXNA
+                    m_log.InfoFormat("{0} Disabling some physics features not implemented by BulletXNA", LogHeader);
+                    m_log.InfoFormat("{0}    Disabling ShouldUseBulletHACD", LogHeader);
+                    BSParam.ShouldUseBulletHACD = false;
+                    m_log.InfoFormat("{0}    Disabling ShouldUseSingleConvexHullForPrims", LogHeader);
+                    BSParam.ShouldUseSingleConvexHullForPrims = false;
+                    m_log.InfoFormat("{0}    Disabling ShouldUseGImpactShapeForPrims", LogHeader);
+                    BSParam.ShouldUseGImpactShapeForPrims = false;
+                    m_log.InfoFormat("{0}    Setting terrain implimentation to Heightmap", LogHeader);
+                    BSParam.TerrainImplementation = (float)BSTerrainPhys.TerrainImplementation.Heightmap;
+                    break;
+            }
+
+            if (ret == null)
+            {
+                m_log.ErrorFormat("{0} COULD NOT SELECT BULLET ENGINE: '[BulletSim]PhysicsEngine' must be either 'BulletUnmanaged-*' or 'BulletXNA-*'", LogHeader);
+            }
+            else
+            {
+                m_log.InfoFormat("{0} Selected bullet engine {1} -> {2}/{3}", LogHeader, engineName, ret.BulletEngineName, ret.BulletEngineVersion);
+            }
+
+            return ret;
+        }
+
+        public override void Dispose()
+        {
+            // m_log.DebugFormat("{0}: Dispose()", LogHeader);
+
+            // make sure no stepping happens while we're deleting stuff
+            m_initialized = false;
+
+            lock (PhysObjects)
+            {
+                foreach (KeyValuePair<uint, BSPhysObject> kvp in PhysObjects)
+                {
+                    kvp.Value.Destroy();
+                }
+                PhysObjects.Clear();
+            }
+
+            // Now that the prims are all cleaned up, there should be no constraints left
+            if (Constraints != null)
+            {
+                Constraints.Dispose();
+                Constraints = null;
+            }
+
+            if (Shapes != null)
+            {
+                Shapes.Dispose();
+                Shapes = null;
+            }
+
+            if (TerrainManager != null)
+            {
+                TerrainManager.ReleaseGroundPlaneAndTerrain();
+                TerrainManager.Dispose();
+                TerrainManager = null;
+            }
+
+            // Anything left in the unmanaged code should be cleaned out
+            PE.Shutdown(World);
+
+            // Not logging any more
+            PhysicsLogging.Close();
+        }
+        #endregion // Construction and Initialization
+
+        #region Prim and Avatar addition and removal
+
+        public override PhysicsActor AddAvatar(string avName, Vector3 position, Vector3 velocity, Vector3 size, bool isFlying)
+        {
+            m_log.ErrorFormat("{0}: CALL TO AddAvatar in BSScene. NOT IMPLEMENTED", LogHeader);
+            return null;
+        }
+
+        public override PhysicsActor AddAvatar(uint localID, string avName, Vector3 position, Vector3 velocity, 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, velocity, size, isFlying);
+            lock (PhysObjects)
+                PhysObjects.Add(localID, actor);
+
+            // TODO: Remove kludge someday.
+            // We must generate a collision for avatars whether they collide or not.
+            // This is required by OpenSim to update avatar animations, etc.
+            lock (AvatarsInSceneLock)
+                AvatarsInScene.Add(actor);
+
+            return actor;
+        }
+
+        public override void RemoveAvatar(PhysicsActor actor)
+        {
+            // m_log.DebugFormat("{0}: RemoveAvatar", LogHeader);
+
+            if (!m_initialized) return;
+
+            BSCharacter bsactor = actor as BSCharacter;
+            if (bsactor != null)
+            {
+                try
+                {
+                    lock (PhysObjects)
+                        PhysObjects.Remove(bsactor.LocalID);
+                    // Remove kludge someday
+                    lock (AvatarsInSceneLock)
+                        AvatarsInScene.Remove(bsactor);
+                }
+                catch (Exception e)
+                {
+                    m_log.WarnFormat("{0}: Attempt to remove avatar that is not in physics scene: {1}", LogHeader, e);
+                }
+                bsactor.Destroy();
+                // bsactor.dispose();
+            }
+            else
+            {
+                m_log.ErrorFormat("{0}: Requested to remove avatar that is not a BSCharacter. ID={1}, type={2}",
+                                            LogHeader, actor.LocalID, actor.GetType().Name);
+            }
+        }
+
+        public override void RemovePrim(PhysicsActor prim)
+        {
+            if (!m_initialized) return;
+
+            BSPhysObject bsprim = prim as BSPhysObject;
+            if (bsprim != null)
+            {
+                DetailLog("{0},RemovePrim,call", bsprim.LocalID);
+                // m_log.DebugFormat("{0}: RemovePrim. id={1}/{2}", LogHeader, bsprim.Name, bsprim.LocalID);
+                try
+                {
+                    lock (PhysObjects) PhysObjects.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();
+            }
+            else
+            {
+                m_log.ErrorFormat("{0}: Attempt to remove prim that is not a BSPrim type.", LogHeader);
+            }
+        }
+
+        public override PhysicsActor AddPrimShape(string primName, PrimitiveBaseShape pbs, Vector3 position,
+                                                  Vector3 size, Quaternion rotation, bool isPhysical, uint localID)
+        {
+            // m_log.DebugFormat("{0}: AddPrimShape2: {1}", LogHeader, primName);
+
+            if (!m_initialized) return null;
+
+            // DetailLog("{0},BSScene.AddPrimShape,call", localID);
+
+            BSPhysObject prim = new BSPrimLinkable(localID, primName, this, position, size, rotation, pbs, isPhysical);
+            lock (PhysObjects) PhysObjects.Add(localID, prim);
+            return prim;
+        }
+
+        // This is a call from the simulator saying that some physical property has been updated.
+        // The BulletSim driver senses the changing of relevant properties so this taint
+        // information call is not needed.
+        public override void AddPhysicsActorTaint(PhysicsActor prim) { }
+
+        #endregion // Prim and Avatar addition and removal
+
+        #region Simulation
+
+        // Call from the simulator to send physics information to the simulator objects.
+        // This pushes all the collision and property update events into the objects in
+        //    the simulator and, since it is on the heartbeat thread, there is an implicit
+        //    locking of those data structures from other heartbeat events.
+        // If the physics engine is running on a separate thread, the update information
+        //    will be in the ObjectsWithCollions and ObjectsWithUpdates structures.
+        public override float Simulate(float timeStep)
+        {
+            if (!BSParam.UseSeparatePhysicsThread)
+            {
+                DoPhysicsStep(timeStep);
+            }
+            return SendUpdatesToSimulator(timeStep);
+        }
+
+        // Call the physics engine to do one 'timeStep' and collect collisions and updates
+        //    into ObjectsWithCollisions and ObjectsWithUpdates data structures.
+        private void DoPhysicsStep(float timeStep)
+        {
+            // prevent simulation until we've been initialized
+            if (!m_initialized) return;
+
+            LastTimeStep = timeStep;
+
+            int updatedEntityCount = 0;
+            int collidersCount = 0;
+
+            int beforeTime = Util.EnvironmentTickCount();
+            int simTime = 0;
+
+            int numTaints = _taintOperations.Count;
+            InTaintTime = true; // Only used for debugging so locking is not necessary.
+
+            // update the prim states while we know the physics engine is not busy
+            ProcessTaints();
+
+            // Some of the physical objects requre individual, pre-step calls
+            //      (vehicles and avatar movement, in particular)
+            TriggerPreStepEvent(timeStep);
+
+            // the prestep actions might have added taints
+            numTaints += _taintOperations.Count;
+            ProcessTaints();
+
+            InTaintTime = false; // Only used for debugging so locking is not necessary.
+
+            // The following causes the unmanaged code to output ALL the values found in ALL the objects in the world.
+            // Only enable this in a limited test world with few objects.
+            if (m_physicsPhysicalDumpEnabled)
+                PE.DumpAllInfo(World);
+
+            // step the physical world one interval
+            m_simulationStep++;
+            int numSubSteps = 0;
+            try
+            {
+                numSubSteps = PE.PhysicsStep(World, timeStep, m_maxSubSteps, m_fixedTimeStep, out updatedEntityCount, out collidersCount);
+
+            }
+            catch (Exception e)
+            {
+                m_log.WarnFormat("{0},PhysicsStep Exception: nTaints={1}, substeps={2}, updates={3}, colliders={4}, e={5}",
+                            LogHeader, numTaints, numSubSteps, updatedEntityCount, collidersCount, e);
+                DetailLog("{0},PhysicsStepException,call, nTaints={1}, substeps={2}, updates={3}, colliders={4}",
+                            DetailLogZero, numTaints, numSubSteps, updatedEntityCount, collidersCount);
+                updatedEntityCount = 0;
+                collidersCount = 0;
+            }
+
+            // Make the physics engine dump useful statistics periodically
+            if (PhysicsMetricDumpFrames != 0 && ((m_simulationStep % PhysicsMetricDumpFrames) == 0))
+                PE.DumpPhysicsStatistics(World);
+
+            // Get a value for 'now' so all the collision and update routines don't have to get their own.
+            SimulationNowTime = Util.EnvironmentTickCount();
+
+            // Send collision information to the colliding objects. The objects decide if the collision
+            //     is 'real' (like linksets don't collide with themselves) and the individual objects
+            //     know if the simulator has subscribed to collisions.
+            lock (CollisionLock)
+            {
+                if (collidersCount > 0)
+                {
+                    lock (PhysObjects)
+                    {
+                        for (int ii = 0; ii < collidersCount; ii++)
+                        {
+                            uint cA = m_collisionArray[ii].aID;
+                            uint cB = m_collisionArray[ii].bID;
+                            Vector3 point = m_collisionArray[ii].point;
+                            Vector3 normal = m_collisionArray[ii].normal;
+                            float penetration = m_collisionArray[ii].penetration;
+                            SendCollision(cA, cB, point, normal, penetration);
+                            SendCollision(cB, cA, point, -normal, penetration);
+                        }
+                    }
+                }
+            }
+
+            // If any of the objects had updated properties, tell the managed objects about the update
+            //     and remember that there was a change so it will be passed to the simulator.
+            lock (UpdateLock)
+            {
+                if (updatedEntityCount > 0)
+                {
+                    lock (PhysObjects)
+                    {
+                        for (int ii = 0; ii < updatedEntityCount; ii++)
+                        {
+                            EntityProperties entprop = m_updateArray[ii];
+                            BSPhysObject pobj;
+                            if (PhysObjects.TryGetValue(entprop.ID, out pobj))
+                            {
+                                if (pobj.IsInitialized)
+                                    pobj.UpdateProperties(entprop);
+                            }
+                        }
+                    }
+                }
+            }
+
+            // Some actors want to know when the simulation step is complete.
+            TriggerPostStepEvent(timeStep);
+
+            simTime = Util.EnvironmentTickCountSubtract(beforeTime);
+            if (PhysicsLogging.Enabled)
+            {
+                DetailLog("{0},DoPhysicsStep,complete,frame={1}, nTaints={2}, simTime={3}, substeps={4}, updates={5}, colliders={6}, objWColl={7}",
+                                        DetailLogZero, m_simulationStep, numTaints, simTime, numSubSteps,
+                                        updatedEntityCount, collidersCount, ObjectsWithCollisions.Count);
+            }
+
+            // The following causes the unmanaged code to output ALL the values found in ALL the objects in the world.
+            // Only enable this in a limited test world with few objects.
+            if (m_physicsPhysicalDumpEnabled)
+                PE.DumpAllInfo(World);
+
+            // The physics engine returns the number of milliseconds it simulated this call.
+            // These are summed and normalized to one second and divided by 1000 to give the reported physics FPS.
+            // Multiply by a fixed nominal frame rate to give a rate similar to the simulator (usually 55).
+            m_simulatedTime +=  (float)numSubSteps * m_fixedTimeStep * 1000f * NominalFrameRate;
+        }
+
+        // Called by a BSPhysObject to note that it has changed properties and this information
+        //    should be passed up to the simulator at the proper time.
+        // Note: this is called by the BSPhysObject from invocation via DoPhysicsStep() above so
+        //    this is is under UpdateLock.
+        public void PostUpdate(BSPhysObject updatee)
+        {
+            lock (UpdateLock)
+            {
+                ObjectsWithUpdates.Add(updatee);
+            }
+        }
+
+        // The simulator thinks it is physics time so return all the collisions and position
+        //     updates that were collected in actual physics simulation.
+        private float SendUpdatesToSimulator(float timeStep)
+        {
+            if (!m_initialized) return 5.0f;
+
+            DetailLog("{0},SendUpdatesToSimulator,collisions={1},updates={2},simedTime={3}",
+                BSScene.DetailLogZero, ObjectsWithCollisions.Count, ObjectsWithUpdates.Count, m_simulatedTime);
+            // Push the collisions into the simulator.
+            lock (CollisionLock)
+            {
+                if (ObjectsWithCollisions.Count > 0)
+                {
+                    foreach (BSPhysObject bsp in ObjectsWithCollisions)
+                        if (!bsp.SendCollisions())
+                        {
+                            // If the object is done colliding, see that it's removed from the colliding list
+                            ObjectsWithNoMoreCollisions.Add(bsp);
+                        }
+                }
+
+                // This is a kludge to get avatar movement updates.
+                // The simulator expects collisions for avatars even if there are have been no collisions.
+                //    The event updates avatar animations and stuff.
+                // If you fix avatar animation updates, remove this overhead and let normal collision processing happen.
+                // Note that we get a copy of the list to search because SendCollision() can take a while.
+                HashSet<BSPhysObject> tempAvatarsInScene;
+                lock (AvatarsInSceneLock)
+                {
+                    tempAvatarsInScene = new HashSet<BSPhysObject>(AvatarsInScene);
+                }
+                foreach (BSPhysObject actor in tempAvatarsInScene)
+                {
+                    if (!ObjectsWithCollisions.Contains(actor))   // don't call avatars twice
+                        actor.SendCollisions();
+                }
+                tempAvatarsInScene = null;
+
+                // Objects that are done colliding are removed from the ObjectsWithCollisions list.
+                // Not done above because it is inside an iteration of ObjectWithCollisions.
+                // This complex collision processing is required to create an empty collision
+                //     event call after all real collisions have happened on an object. This allows
+                //     the simulator to generate the 'collision end' event.
+                if (ObjectsWithNoMoreCollisions.Count > 0)
+                {
+                    foreach (BSPhysObject po in ObjectsWithNoMoreCollisions)
+                        ObjectsWithCollisions.Remove(po);
+                    ObjectsWithNoMoreCollisions.Clear();
+                }
+            }
+
+            // Call the simulator for each object that has physics property updates.
+            HashSet<BSPhysObject> updatedObjects = null;
+            lock (UpdateLock)
+            {
+                if (ObjectsWithUpdates.Count > 0)
+                {
+                    updatedObjects = ObjectsWithUpdates;
+                    ObjectsWithUpdates = new HashSet<BSPhysObject>();
+                }
+            }
+            if (updatedObjects != null)
+            {
+                foreach (BSPhysObject obj in updatedObjects)
+                {
+                    obj.RequestPhysicsterseUpdate();
+                }
+                updatedObjects.Clear();
+            }
+
+            // Return the framerate simulated to give the above returned results.
+            // (Race condition here but this is just bookkeeping so rare mistakes do not merit a lock).
+            float simTime = m_simulatedTime;
+            m_simulatedTime = 0f;
+            return simTime;
+        }
+
+        // Something has collided
+        private void SendCollision(uint localID, uint collidingWith, Vector3 collidePoint, Vector3 collideNormal, float penetration)
+        {
+            if (localID <= TerrainManager.HighestTerrainID)
+            {
+                return;         // don't send collisions to the terrain
+            }
+
+            BSPhysObject collider;
+            // NOTE that PhysObjects was locked before the call to SendCollision().
+            if (!PhysObjects.TryGetValue(localID, out collider))
+            {
+                // If the object that is colliding cannot be found, just ignore the collision.
+                DetailLog("{0},BSScene.SendCollision,colliderNotInObjectList,id={1},with={2}", DetailLogZero, localID, collidingWith);
+                return;
+            }
+
+            // Note: the terrain is not in the physical object list so 'collidee' can be null when Collide() is called.
+            BSPhysObject collidee = null;
+            PhysObjects.TryGetValue(collidingWith, out collidee);
+
+            // DetailLog("{0},BSScene.SendCollision,collide,id={1},with={2}", DetailLogZero, localID, collidingWith);
+
+            if (collider.IsInitialized)
+            {
+                if (collider.Collide(collidingWith, collidee, collidePoint, collideNormal, penetration))
+                {
+                    // If a collision was 'good', remember to send it to the simulator
+                    lock (CollisionLock)
+                    {
+                        ObjectsWithCollisions.Add(collider);
+                    }
+                }
+            }
+
+            return;
+        }
+
+        public void BulletSPluginPhysicsThread()
+        {
+            Thread.CurrentThread.Priority = ThreadPriority.Highest;
+            m_updateWaitEvent = new ManualResetEvent(false);
+
+            while (m_initialized)
+            {
+                int beginSimulationRealtimeMS = Util.EnvironmentTickCount();
+
+                if (BSParam.Active)
+                    DoPhysicsStep(BSParam.PhysicsTimeStep);
+
+                int simulationRealtimeMS = Util.EnvironmentTickCountSubtract(beginSimulationRealtimeMS);
+                int simulationTimeVsRealtimeDifferenceMS = ((int)(BSParam.PhysicsTimeStep*1000f)) - simulationRealtimeMS;
+
+                if (simulationTimeVsRealtimeDifferenceMS > 0)
+                {
+                    // The simulation of the time interval took less than realtime.
+                    // Do a wait for the rest of realtime.
+                     m_updateWaitEvent.WaitOne(simulationTimeVsRealtimeDifferenceMS);
+                    //Thread.Sleep(simulationTimeVsRealtimeDifferenceMS);
+                }
+                else
+                {
+                    // The simulation took longer than realtime.
+                    // Do some scaling of simulation time.
+                    // TODO.
+                    DetailLog("{0},BulletSPluginPhysicsThread,longerThanRealtime={1}", BSScene.DetailLogZero, simulationTimeVsRealtimeDifferenceMS);
+                }
+
+                Watchdog.UpdateThread();
+            }
+
+            Watchdog.RemoveThread();
+        }
+
+        #endregion // Simulation
+
+        public override void GetResults() { }
+
+        #region Terrain
+
+        public override void SetTerrain(float[] heightMap) {
+            TerrainManager.SetTerrain(heightMap);
+        }
+
+        public override void SetWaterLevel(float baseheight)
+        {
+            SimpleWaterLevel = baseheight;
+        }
+
+        public override void DeleteTerrain()
+        {
+            // m_log.DebugFormat("{0}: DeleteTerrain()", LogHeader);
+        }
+
+        // Although no one seems to check this, I do support combining.
+        public override bool SupportsCombining()
+        {
+            return TerrainManager.SupportsCombining();
+        }
+        // This call says I am a child to region zero in a mega-region. 'pScene' is that
+        //    of region zero, 'offset' is my offset from regions zero's origin, and
+        //    'extents' is the largest XY that is handled in my region.
+        public override void Combine(PhysicsScene pScene, Vector3 offset, Vector3 extents)
+        {
+            TerrainManager.Combine(pScene, offset, extents);
+        }
+
+        // Unhook all the combining that I know about.
+        public override void UnCombine(PhysicsScene pScene)
+        {
+            TerrainManager.UnCombine(pScene);
+        }
+
+        #endregion // Terrain
+
+        public override Dictionary<uint, float> GetTopColliders()
+        {
+            Dictionary<uint, float> topColliders;
+
+            lock (PhysObjects)
+            {
+                foreach (KeyValuePair<uint, BSPhysObject> kvp in PhysObjects)
+                {
+                    kvp.Value.ComputeCollisionScore();
+                }
+
+                List<BSPhysObject> orderedPrims = new List<BSPhysObject>(PhysObjects.Values);
+                orderedPrims.OrderByDescending(p => p.CollisionScore);
+                topColliders = orderedPrims.Take(25).ToDictionary(p => p.LocalID, p => p.CollisionScore);
+            }
+
+            return topColliders;
+        }
+
+        public override bool IsThreaded { get { return false;  } }
+
+        #region Extensions
+        public override object Extension(string pFunct, params object[] pParams)
+        {
+            DetailLog("{0} BSScene.Extension,op={1}", DetailLogZero, pFunct);
+            return base.Extension(pFunct, pParams);
+        }
+        #endregion // Extensions
+
+        public static string PrimitiveBaseShapeToString(PrimitiveBaseShape pbs)
+        {
+            float pathShearX = pbs.PathShearX < 128 ? (float)pbs.PathShearX * 0.01f : (float)(pbs.PathShearX - 256) * 0.01f;
+            float pathShearY = pbs.PathShearY < 128 ? (float)pbs.PathShearY * 0.01f : (float)(pbs.PathShearY - 256) * 0.01f;
+            float pathBegin = (float)pbs.PathBegin * 2.0e-5f;
+            float pathEnd = 1.0f - (float)pbs.PathEnd * 2.0e-5f;
+            float pathScaleX = (float)(200 - pbs.PathScaleX) * 0.01f;
+            float pathScaleY = (float)(200 - pbs.PathScaleY) * 0.01f;
+            float pathTaperX = pbs.PathTaperX * 0.01f;
+            float pathTaperY = pbs.PathTaperY * 0.01f;
+
+            float profileBegin = (float)pbs.ProfileBegin * 2.0e-5f;
+            float profileEnd = 1.0f - (float)pbs.ProfileEnd * 2.0e-5f;
+            float profileHollow = (float)pbs.ProfileHollow * 2.0e-5f;
+            if (profileHollow > 0.95f)
+                profileHollow = 0.95f;
+
+            StringBuilder buff = new StringBuilder();
+            buff.Append("shape=");
+            buff.Append(((ProfileShape)pbs.ProfileShape).ToString());
+            buff.Append(",");
+            buff.Append("hollow=");
+            buff.Append(((HollowShape)pbs.HollowShape).ToString());
+            buff.Append(",");
+            buff.Append("pathCurve=");
+            buff.Append(((Extrusion)pbs.PathCurve).ToString());
+            buff.Append(",");
+            buff.Append("profCurve=");
+            buff.Append(((Extrusion)pbs.ProfileCurve).ToString());
+            buff.Append(",");
+            buff.Append("profHollow=");
+            buff.Append(profileHollow.ToString());
+            buff.Append(",");
+            buff.Append("pathBegEnd=");
+            buff.Append(pathBegin.ToString());
+            buff.Append("/");
+            buff.Append(pathEnd.ToString());
+            buff.Append(",");
+            buff.Append("profileBegEnd=");
+            buff.Append(profileBegin.ToString());
+            buff.Append("/");
+            buff.Append(profileEnd.ToString());
+            buff.Append(",");
+            buff.Append("scaleXY=");
+            buff.Append(pathScaleX.ToString());
+            buff.Append("/");
+            buff.Append(pathScaleY.ToString());
+            buff.Append(",");
+            buff.Append("shearXY=");
+            buff.Append(pathShearX.ToString());
+            buff.Append("/");
+            buff.Append(pathShearY.ToString());
+            buff.Append(",");
+            buff.Append("taperXY=");
+            buff.Append(pbs.PathTaperX.ToString());
+            buff.Append("/");
+            buff.Append(pbs.PathTaperY.ToString());
+            buff.Append(",");
+            buff.Append("skew=");
+            buff.Append(pbs.PathSkew.ToString());
+            buff.Append(",");
+            buff.Append("twist/Beg=");
+            buff.Append(pbs.PathTwist.ToString());
+            buff.Append("/");
+            buff.Append(pbs.PathTwistBegin.ToString());
+
+            return buff.ToString();
+        }
+
+        #region Taints
+        // The simulation execution order is:
+        // Simulate()
+        //    DoOneTimeTaints
+        //    TriggerPreStepEvent
+        //    DoOneTimeTaints
+        //    Step()
+        //       ProcessAndSendToSimulatorCollisions
+        //       ProcessAndSendToSimulatorPropertyUpdates
+        //    TriggerPostStepEvent
+
+        // Calls to the PhysicsActors can't directly call into the physics engine
+        //       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(string pOriginator, string pIdent, TaintCallback pCallback)
+        {
+            TaintedObject(false /*inTaintTime*/, pOriginator, pIdent, pCallback);
+        }
+        public void TaintedObject(uint pOriginator, String pIdent, TaintCallback pCallback)
+        {
+            TaintedObject(false /*inTaintTime*/, m_physicsLoggingEnabled ? pOriginator.ToString() : BSScene.DetailLogZero, pIdent, pCallback);
+        }
+        public void TaintedObject(bool inTaintTime, String pIdent, TaintCallback pCallback)
+        {
+            TaintedObject(inTaintTime, BSScene.DetailLogZero, pIdent, pCallback);
+        }
+        public void TaintedObject(bool inTaintTime, uint pOriginator, String pIdent, TaintCallback pCallback)
+        {
+            TaintedObject(inTaintTime, m_physicsLoggingEnabled ? pOriginator.ToString() : BSScene.DetailLogZero, pIdent, pCallback);
+        }
+        // Sometimes a potentially tainted operation can be used in and out of taint time.
+        // This routine executes the command immediately if in taint-time otherwise it is queued.
+        public void TaintedObject(bool inTaintTime, string pOriginator, string pIdent, TaintCallback pCallback)
+        {
+            if (!m_initialized) return;
+
+            if (inTaintTime)
+                pCallback();
+            else
+            {
+                lock (_taintLock)
+                {
+                    _taintOperations.Add(new TaintCallbackEntry(pOriginator, pIdent, pCallback));
+                }
+            }
+        }
+
+        private void TriggerPreStepEvent(float timeStep)
+        {
+            PreStepAction actions = BeforeStep;
+            if (actions != null)
+                actions(timeStep);
+
+        }
+
+        private void TriggerPostStepEvent(float timeStep)
+        {
+            PostStepAction actions = AfterStep;
+            if (actions != null)
+                actions(timeStep);
+
+        }
+
+        // When someone tries to change a property on a BSPrim or BSCharacter, the object queues
+        // a callback into itself to do the actual property change. That callback is called
+        // here just before the physics engine is called to step the simulation.
+        public void ProcessTaints()
+        {
+            ProcessRegularTaints();
+            ProcessPostTaintTaints();
+        }
+
+        private void ProcessRegularTaints()
+        {
+            if (m_initialized && _taintOperations.Count > 0)  // save allocating new list if there is nothing to process
+            {
+                // swizzle a new list into the list location so we can process what's there
+                List<TaintCallbackEntry> oldList;
+                lock (_taintLock)
+                {
+                    oldList = _taintOperations;
+                    _taintOperations = new List<TaintCallbackEntry>();
+                }
+
+                foreach (TaintCallbackEntry tcbe in oldList)
+                {
+                    try
+                    {
+                        DetailLog("{0},BSScene.ProcessTaints,doTaint,id={1}", tcbe.originator, tcbe.ident); // DEBUG DEBUG DEBUG
+                        tcbe.callback();
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat("{0}: ProcessTaints: {1}: Exception: {2}", LogHeader, tcbe.ident, e);
+                    }
+                }
+                oldList.Clear();
+            }
+        }
+
+        // Schedule an update to happen after all the regular taints are processed.
+        // Note that new requests for the same operation ("ident") for the same object ("ID")
+        //     will replace any previous operation by the same object.
+        public void PostTaintObject(String ident, uint ID, TaintCallback callback)
+        {
+            string IDAsString = ID.ToString();
+            string uniqueIdent = ident + "-" + IDAsString;
+            lock (_taintLock)
+            {
+                _postTaintOperations[uniqueIdent] = new TaintCallbackEntry(IDAsString, uniqueIdent, callback);
+            }
+
+            return;
+        }
+
+        // Taints that happen after the normal taint processing but before the simulation step.
+        private void ProcessPostTaintTaints()
+        {
+            if (m_initialized && _postTaintOperations.Count > 0)
+            {
+                Dictionary<string, TaintCallbackEntry> oldList;
+                lock (_taintLock)
+                {
+                    oldList = _postTaintOperations;
+                    _postTaintOperations = new Dictionary<string, TaintCallbackEntry>();
+                }
+
+                foreach (KeyValuePair<string,TaintCallbackEntry> kvp in oldList)
+                {
+                    try
+                    {
+                        DetailLog("{0},BSScene.ProcessPostTaintTaints,doTaint,id={1}", DetailLogZero, kvp.Key); // DEBUG DEBUG DEBUG
+                        kvp.Value.callback();
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat("{0}: ProcessPostTaintTaints: {1}: Exception: {2}", LogHeader, kvp.Key, e);
+                    }
+                }
+                oldList.Clear();
+            }
+        }
+
+        // Only used for debugging. Does not change state of anything so locking is not necessary.
+        public bool AssertInTaintTime(string whereFrom)
+        {
+            if (!InTaintTime)
+            {
+                DetailLog("{0},BSScene.AssertInTaintTime,NOT IN TAINT TIME,Region={1},Where={2}", DetailLogZero, RegionName, whereFrom);
+                m_log.ErrorFormat("{0} NOT IN TAINT TIME!! Region={1}, Where={2}", LogHeader, RegionName, whereFrom);
+                // Util.PrintCallStack(DetailLog);
+            }
+            return InTaintTime;
+        }
+
+        #endregion // Taints
+
+        #region IPhysicsParameters
+        // Get the list of parameters this physics engine supports
+        public PhysParameterEntry[] GetParameterList()
+        {
+            BSParam.BuildParameterTable();
+            return BSParam.SettableParameters;
+        }
+
+        // Set parameter on a specific or all instances.
+        // Return 'false' if not able to set the parameter.
+        // Setting the value in the m_params block will change the value the physics engine
+        //   will use the next time since it's pinned and shared memory.
+        // Some of the values require calling into the physics engine to get the new
+        //   value activated ('terrainFriction' for instance).
+        public bool SetPhysicsParameter(string parm, string val, uint localID)
+        {
+            bool ret = false;
+
+            BSParam.ParameterDefnBase theParam;
+            if (BSParam.TryGetParameter(parm, out theParam))
+            {
+                // Set the value in the C# code
+                theParam.SetValue(this, val);
+
+                // Optionally set the parameter in the unmanaged code
+                if (theParam.HasSetOnObject)
+                {
+                    // update all the localIDs specified
+                    // 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
+                    List<uint> objectIDs = new List<uint>();
+                    switch (localID)
+                    {
+                        case PhysParameterEntry.APPLY_TO_NONE:
+                            // This will cause a call into the physical world if some operation is specified (SetOnObject).
+                            objectIDs.Add(TERRAIN_ID);
+                            TaintedUpdateParameter(parm, objectIDs, val);
+                            break;
+                        case PhysParameterEntry.APPLY_TO_ALL:
+                            lock (PhysObjects) objectIDs = new List<uint>(PhysObjects.Keys);
+                            TaintedUpdateParameter(parm, objectIDs, val);
+                            break;
+                        default:
+                            // setting only one localID
+                            objectIDs.Add(localID);
+                            TaintedUpdateParameter(parm, objectIDs, val);
+                            break;
+                    }
+                }
+
+                ret = true;
+            }
+            return ret;
+        }
+
+        // schedule the actual updating of the paramter to when the phys engine is not busy
+        private void TaintedUpdateParameter(string parm, List<uint> lIDs, string val)
+        {
+            string xval = val;
+            List<uint> xlIDs = lIDs;
+            string xparm = parm;
+            TaintedObject(DetailLogZero, "BSScene.UpdateParameterSet", delegate() {
+                BSParam.ParameterDefnBase thisParam;
+                if (BSParam.TryGetParameter(xparm, out thisParam))
+                {
+                    if (thisParam.HasSetOnObject)
+                    {
+                        foreach (uint lID in xlIDs)
+                        {
+                            BSPhysObject theObject = null;
+                            if (PhysObjects.TryGetValue(lID, out theObject))
+                                thisParam.SetOnObject(this, theObject);
+                        }
+                    }
+                }
+            });
+        }
+
+        // Get parameter.
+        // Return 'false' if not able to get the parameter.
+        public bool GetPhysicsParameter(string parm, out string value)
+        {
+            string val = String.Empty;
+            bool ret = false;
+            BSParam.ParameterDefnBase theParam;
+            if (BSParam.TryGetParameter(parm, out theParam))
+            {
+                val = theParam.GetValue(this);
+                ret = true;
+            }
+            value = val;
+            return ret;
+        }
+
+        #endregion IPhysicsParameters
+
+        // Invoke the detailed logger and output something if it's enabled.
+        public void DetailLog(string msg, params Object[] args)
+        {
+            PhysicsLogging.Write(msg, args);
+        }
+        // Used to fill in the LocalID when there isn't one. It's the correct number of characters.
+        public const string DetailLogZero = "0000000000";
+
+    }
+}
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs b/OpenSim/Region/PhysicsModules/BulletS/BSShapeCollection.cs
index d1de844..b100273 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSShapeCollection.cs
@@ -29,10 +29,10 @@ using System.Collections.Generic;
 using System.Text;
 using OMV = OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-using OpenSim.Region.Physics.ConvexDecompositionDotNet;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public sealed class BSShapeCollection : IDisposable
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSShapes.cs b/OpenSim/Region/PhysicsModules/BulletS/BSShapes.cs
index 03a9ddc..79f1a89 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSShapes.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSShapes.cs
@@ -30,13 +30,13 @@ using System.Collections.Generic;
 using System.Text;
 
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-using OpenSim.Region.Physics.Meshing;
-using OpenSim.Region.Physics.ConvexDecompositionDotNet;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.PhysicsModules.Meshing;
+using OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet;
 
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 // Information class that holds stats for the shape. Which values mean
 //     something depends on the type of shape.
@@ -299,7 +299,7 @@ public abstract class BSShape
                 {
                     xprim.PrimAssetState = BSPhysObject.PrimAssetCondition.FailedAssetFetch;
                     physicsScene.Logger.ErrorFormat("{0} Physical object requires asset but no asset provider. Name={1}",
-                                                LogHeader, physicsScene.Name);
+                                                LogHeader, physicsScene.PhysicsSceneName);
                 }
             }
             else
@@ -336,7 +336,7 @@ public abstract class BSShape
         if (pScene != null)
         {
             buff.Append("/rgn=");
-            buff.Append(pScene.Name);
+            buff.Append(pScene.PhysicsSceneName);
         }
         return buff.ToString();
     }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSTerrainHeightmap.cs b/OpenSim/Region/PhysicsModules/BulletS/BSTerrainHeightmap.cs
index d70b2fb..42fc11b 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSTerrainHeightmap.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSTerrainHeightmap.cs
@@ -30,15 +30,14 @@ using System.Text;
 
 using OpenSim.Framework;
 using OpenSim.Region.Framework;
-using OpenSim.Region.CoreModules;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using Nini.Config;
 using log4net;
 
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public sealed class BSTerrainHeightmap : BSTerrainPhys
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSTerrainManager.cs b/OpenSim/Region/PhysicsModules/BulletS/BSTerrainManager.cs
index 50f917a..d11baa6 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSTerrainManager.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSTerrainManager.cs
@@ -30,15 +30,14 @@ using System.Text;
 
 using OpenSim.Framework;
 using OpenSim.Region.Framework;
-using OpenSim.Region.CoreModules;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using Nini.Config;
 using log4net;
 
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 
 // The physical implementation of the terrain is wrapped in this class.
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSTerrainMesh.cs b/OpenSim/Region/PhysicsModules/BulletS/BSTerrainMesh.cs
index e4ca098..cd59b65 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSTerrainMesh.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BSTerrainMesh.cs
@@ -30,15 +30,14 @@ using System.Text;
 
 using OpenSim.Framework;
 using OpenSim.Region.Framework;
-using OpenSim.Region.CoreModules;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
 using Nini.Config;
 using log4net;
 
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 public sealed class BSTerrainMesh : BSTerrainPhys
 {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BulletSimData.cs b/OpenSim/Region/PhysicsModules/BulletS/BulletSimData.cs
index 5932461..3329395 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BulletSimData.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/BulletSimData.cs
@@ -29,7 +29,7 @@ using System.Collections.Generic;
 using System.Text;
 using OMV = OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin
+namespace OpenSim.Region.PhysicsModule.BulletS
 {
 // Classes to allow some type checking for the API
 // These hold pointers to allocated objects in the unmanaged space.
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt b/OpenSim/Region/PhysicsModules/BulletS/BulletSimTODO.txt
index 0453376..0453376 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
+++ b/OpenSim/Region/PhysicsModules/BulletS/BulletSimTODO.txt
diff --git a/OpenSim/Region/PhysicsModules/BulletS/ExtendedPhysics.cs b/OpenSim/Region/PhysicsModules/BulletS/ExtendedPhysics.cs
new file mode 100755
index 0000000..2ba3c5a
--- /dev/null
+++ b/OpenSim/Region/PhysicsModules/BulletS/ExtendedPhysics.cs
@@ -0,0 +1,622 @@
+/*
+ * 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.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading;
+
+using OpenSim.Framework;
+using OpenSim.Region.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.PhysicsModules.SharedBase;
+
+using Mono.Addins;
+using Nini.Config;
+using log4net;
+using OpenMetaverse;
+
+namespace OpenSim.Region.PhysicsModule.BulletS
+{
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule")]
+    public class ExtendedPhysics : INonSharedRegionModule
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private static string LogHeader = "[EXTENDED PHYSICS]";
+
+        // =============================================================
+        // Since BulletSim is a plugin, this these values aren't defined easily in one place.
+        // This table must correspond to an identical table in BSScene.
+
+        // Per scene functions. See BSScene.
+
+        // Per avatar functions. See BSCharacter.
+
+        // Per prim functions. See BSPrim.
+        public const string PhysFunctGetLinksetType = "BulletSim.GetLinksetType";
+        public const string PhysFunctSetLinksetType = "BulletSim.SetLinksetType";
+        public const string PhysFunctChangeLinkFixed = "BulletSim.ChangeLinkFixed";
+        public const string PhysFunctChangeLinkType = "BulletSim.ChangeLinkType";
+        public const string PhysFunctGetLinkType = "BulletSim.GetLinkType";
+        public const string PhysFunctChangeLinkParams = "BulletSim.ChangeLinkParams";
+        public const string PhysFunctAxisLockLimits = "BulletSim.AxisLockLimits";
+
+        // =============================================================
+
+        private IConfig Configuration { get; set; }
+        private bool Enabled { get; set; }
+        private Scene BaseScene { get; set; }
+        private IScriptModuleComms Comms { get; set; }
+
+        #region INonSharedRegionModule
+
+        public string Name { get { return this.GetType().Name; } }
+
+        public void Initialise(IConfigSource config)
+        {
+            BaseScene = null;
+            Enabled = false;
+            Configuration = null;
+            Comms = null;
+
+            try
+            {
+                if ((Configuration = config.Configs["ExtendedPhysics"]) != null)
+                {
+                    Enabled = Configuration.GetBoolean("Enabled", Enabled);
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.ErrorFormat("{0} Initialization error: {0}", LogHeader, e);
+            }
+
+            m_log.InfoFormat("{0} module {1} enabled", LogHeader, (Enabled ? "is" : "is not"));
+        }
+
+        public void Close()
+        {
+            if (BaseScene != null)
+            {
+                BaseScene.EventManager.OnObjectAddedToScene -= EventManager_OnObjectAddedToScene;
+                BaseScene.EventManager.OnSceneObjectPartUpdated -= EventManager_OnSceneObjectPartUpdated;
+                BaseScene = null;
+            }
+        }
+
+        public void AddRegion(Scene scene)
+        {
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (BaseScene != null && BaseScene == scene)
+            {
+                Close();
+            }
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!Enabled) return;
+
+            BaseScene = scene;
+
+            Comms = BaseScene.RequestModuleInterface<IScriptModuleComms>();
+            if (Comms == null)
+            {
+                m_log.WarnFormat("{0} ScriptModuleComms interface not defined", LogHeader);
+                Enabled = false;
+
+                return;
+            }
+ 
+            // Register as LSL functions all the [ScriptInvocation] marked methods.
+            Comms.RegisterScriptInvocations(this);
+            Comms.RegisterConstants(this);
+
+            // When an object is modified, we might need to update its extended physics parameters
+            BaseScene.EventManager.OnObjectAddedToScene += EventManager_OnObjectAddedToScene;
+            BaseScene.EventManager.OnSceneObjectPartUpdated += EventManager_OnSceneObjectPartUpdated;
+
+        }
+
+        public Type ReplaceableInterface { get { return null; } }
+
+        #endregion // INonSharedRegionModule
+
+        private void EventManager_OnObjectAddedToScene(SceneObjectGroup obj)
+        {
+        }
+
+        // Event generated when some property of a prim changes.
+        private void EventManager_OnSceneObjectPartUpdated(SceneObjectPart sop, bool isFullUpdate)
+        {
+        }
+
+        [ScriptConstant]
+        public const int PHYS_CENTER_OF_MASS =     1 << 0;
+
+        [ScriptInvocation]
+        public string physGetEngineType(UUID hostID, UUID scriptID)
+        {
+            string ret = string.Empty;
+
+            if (BaseScene.PhysicsScene != null)
+            {
+                ret = BaseScene.PhysicsScene.EngineType;
+            }
+
+            return ret;
+        }
+
+        // Code for specifying params.
+        // The choice if 14700 is arbitrary and only serves to catch parameter code misuse.
+        [ScriptConstant]
+        public const int PHYS_AXIS_LOCK_LINEAR     = 14700;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LOCK_LINEAR_X   = 14701;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LIMIT_LINEAR_X  = 14702;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LOCK_LINEAR_Y   = 14703;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LIMIT_LINEAR_Y  = 14704;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LOCK_LINEAR_Z   = 14705;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LIMIT_LINEAR_Z  = 14706;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LOCK_ANGULAR    = 14707;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LOCK_ANGULAR_X  = 14708;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LIMIT_ANGULAR_X = 14709;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LOCK_ANGULAR_Y  = 14710;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LIMIT_ANGULAR_Y = 14711;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LOCK_ANGULAR_Z  = 14712;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LIMIT_ANGULAR_Z = 14713;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK_LINEAR   = 14714;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK_LINEAR_X = 14715;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK_LINEAR_Y = 14716;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK_LINEAR_Z = 14717;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK_ANGULAR  = 14718;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK_ANGULAR_X = 14719;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK_ANGULAR_Y = 14720;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK_ANGULAR_Z = 14721;
+        [ScriptConstant]
+        public const int PHYS_AXIS_UNLOCK           = 14722;
+        // physAxisLockLimits()
+        [ScriptInvocation]
+        public int physAxisLock(UUID hostID, UUID scriptID, object[] parms)
+        {
+            int ret = -1;
+            if (!Enabled) return ret;
+
+            PhysicsActor rootPhysActor;
+            if (GetRootPhysActor(hostID, out rootPhysActor))
+            {
+                object[] parms2 = AddToBeginningOfArray(rootPhysActor, null, parms);
+                ret = MakeIntError(rootPhysActor.Extension(PhysFunctAxisLockLimits, parms2));
+            }
+
+            return ret;
+        }
+
+        [ScriptConstant]
+        public const int PHYS_LINKSET_TYPE_CONSTRAINT  = 0;
+        [ScriptConstant]
+        public const int PHYS_LINKSET_TYPE_COMPOUND    = 1;
+        [ScriptConstant]
+        public const int PHYS_LINKSET_TYPE_MANUAL      = 2;
+
+        [ScriptInvocation]
+        public int physSetLinksetType(UUID hostID, UUID scriptID, int linksetType)
+        {
+            int ret = -1;
+            if (!Enabled) return ret;
+
+            // The part that is requesting the change.
+            SceneObjectPart requestingPart = BaseScene.GetSceneObjectPart(hostID);
+
+            if (requestingPart != null)
+            {
+                // The change is always made to the root of a linkset.
+                SceneObjectGroup containingGroup = requestingPart.ParentGroup;
+                SceneObjectPart rootPart = containingGroup.RootPart;
+
+                if (rootPart != null)
+                {
+                    PhysicsActor rootPhysActor = rootPart.PhysActor;
+                    if (rootPhysActor != null)
+                    {
+                        if (rootPhysActor.IsPhysical)
+                        {
+                            // Change a physical linkset by making non-physical, waiting for one heartbeat so all
+                            //    the prim and linkset state is updated, changing the type and making the
+                            //    linkset physical again.
+                            containingGroup.ScriptSetPhysicsStatus(false);
+                            Thread.Sleep(150);  // longer than one heartbeat tick
+
+                            // A kludge for the moment.
+                            // Since compound linksets move the children but don't generate position updates to the
+                            //     simulator, it is possible for compound linkset children to have out-of-sync simulator
+                            //     and physical positions. The following causes the simulator to push the real child positions
+                            //     down into the physics engine to get everything synced.
+                            containingGroup.UpdateGroupPosition(containingGroup.AbsolutePosition);
+                            containingGroup.UpdateGroupRotationR(containingGroup.GroupRotation);
+
+                            object[] parms2 = { rootPhysActor, null, linksetType };
+                            ret = MakeIntError(rootPhysActor.Extension(PhysFunctSetLinksetType, parms2));
+                            Thread.Sleep(150);  // longer than one heartbeat tick
+
+                            containingGroup.ScriptSetPhysicsStatus(true);
+                        }
+                        else
+                        {
+                            // Non-physical linksets don't have a physical instantiation so there is no state to
+                            //    worry about being updated.
+                            object[] parms2 = { rootPhysActor, null, linksetType };
+                            ret = MakeIntError(rootPhysActor.Extension(PhysFunctSetLinksetType, parms2));
+                        }
+                    }
+                    else
+                    {
+                        m_log.WarnFormat("{0} physSetLinksetType: root part does not have a physics actor. rootName={1}, hostID={2}",
+                                            LogHeader, rootPart.Name, hostID);
+                    }
+                }
+                else
+                {
+                    m_log.WarnFormat("{0} physSetLinksetType: root part does not exist. RequestingPartName={1}, hostID={2}",
+                                        LogHeader, requestingPart.Name, hostID);
+                }
+            }
+            else
+            {
+                m_log.WarnFormat("{0} physSetLinsetType: cannot find script object in scene. hostID={1}", LogHeader, hostID);
+            }
+            return ret;
+        }
+
+        [ScriptInvocation]
+        public int physGetLinksetType(UUID hostID, UUID scriptID)
+        {
+            int ret = -1;
+            if (!Enabled) return ret;
+
+            PhysicsActor rootPhysActor;
+            if (GetRootPhysActor(hostID, out rootPhysActor))
+            {
+                object[] parms2 = { rootPhysActor, null };
+                ret = MakeIntError(rootPhysActor.Extension(PhysFunctGetLinksetType, parms2));
+            }
+            else
+            {
+                m_log.WarnFormat("{0} physGetLinsetType: cannot find script object in scene. hostID={1}", LogHeader, hostID);
+            }
+            return ret;
+        }
+
+        [ScriptConstant]
+        public const int PHYS_LINK_TYPE_FIXED  = 1234;
+        [ScriptConstant]
+        public const int PHYS_LINK_TYPE_HINGE  = 4;
+        [ScriptConstant]
+        public const int PHYS_LINK_TYPE_SPRING = 9;
+        [ScriptConstant]
+        public const int PHYS_LINK_TYPE_6DOF   = 6;
+        [ScriptConstant]
+        public const int PHYS_LINK_TYPE_SLIDER = 7;
+
+        // physChangeLinkType(integer linkNum, integer typeCode)
+        [ScriptInvocation]
+        public int physChangeLinkType(UUID hostID, UUID scriptID, int linkNum, int typeCode)
+        {
+            int ret = -1;
+            if (!Enabled) return ret;
+
+            PhysicsActor rootPhysActor;
+            PhysicsActor childPhysActor;
+
+            if (GetRootAndChildPhysActors(hostID, linkNum, out rootPhysActor, out childPhysActor))
+            {
+                object[] parms2 = { rootPhysActor, childPhysActor, typeCode };
+                ret = MakeIntError(rootPhysActor.Extension(PhysFunctChangeLinkType, parms2));
+            }
+
+            return ret;
+        }
+
+        // physGetLinkType(integer linkNum)
+        [ScriptInvocation]
+        public int physGetLinkType(UUID hostID, UUID scriptID, int linkNum)
+        {
+            int ret = -1;
+            if (!Enabled) return ret;
+
+            PhysicsActor rootPhysActor;
+            PhysicsActor childPhysActor;
+
+            if (GetRootAndChildPhysActors(hostID, linkNum, out rootPhysActor, out childPhysActor))
+            {
+                object[] parms2 = { rootPhysActor, childPhysActor };
+                ret = MakeIntError(rootPhysActor.Extension(PhysFunctGetLinkType, parms2));
+            }
+
+            return ret;
+        }
+
+        // physChangeLinkFixed(integer linkNum)
+        // Change the link between the root and the linkNum into a fixed, static physical connection.
+        [ScriptInvocation]
+        public int physChangeLinkFixed(UUID hostID, UUID scriptID, int linkNum)
+        {
+            int ret = -1;
+            if (!Enabled) return ret;
+
+            PhysicsActor rootPhysActor;
+            PhysicsActor childPhysActor;
+
+            if (GetRootAndChildPhysActors(hostID, linkNum, out rootPhysActor, out childPhysActor))
+            {
+                object[] parms2 = { rootPhysActor, childPhysActor , PHYS_LINK_TYPE_FIXED };
+                ret = MakeIntError(rootPhysActor.Extension(PhysFunctChangeLinkType, parms2));
+            }
+
+            return ret;
+        }
+
+        // Code for specifying params.
+        // The choice if 14400 is arbitrary and only serves to catch parameter code misuse.
+        public const int PHYS_PARAM_MIN                    = 14401;
+
+        [ScriptConstant]
+        public const int PHYS_PARAM_FRAMEINA_LOC           = 14401;
+        [ScriptConstant]
+        public const int PHYS_PARAM_FRAMEINA_ROT           = 14402;
+        [ScriptConstant]
+        public const int PHYS_PARAM_FRAMEINB_LOC           = 14403;
+        [ScriptConstant]
+        public const int PHYS_PARAM_FRAMEINB_ROT           = 14404;
+        [ScriptConstant]
+        public const int PHYS_PARAM_LINEAR_LIMIT_LOW       = 14405;
+        [ScriptConstant]
+        public const int PHYS_PARAM_LINEAR_LIMIT_HIGH      = 14406;
+        [ScriptConstant]
+        public const int PHYS_PARAM_ANGULAR_LIMIT_LOW      = 14407;
+        [ScriptConstant]
+        public const int PHYS_PARAM_ANGULAR_LIMIT_HIGH     = 14408;
+        [ScriptConstant]
+        public const int PHYS_PARAM_USE_FRAME_OFFSET       = 14409;
+        [ScriptConstant]
+        public const int PHYS_PARAM_ENABLE_TRANSMOTOR      = 14410;
+        [ScriptConstant]
+        public const int PHYS_PARAM_TRANSMOTOR_MAXVEL      = 14411;
+        [ScriptConstant]
+        public const int PHYS_PARAM_TRANSMOTOR_MAXFORCE    = 14412;
+        [ScriptConstant]
+        public const int PHYS_PARAM_CFM                    = 14413;
+        [ScriptConstant]
+        public const int PHYS_PARAM_ERP                    = 14414;
+        [ScriptConstant]
+        public const int PHYS_PARAM_SOLVER_ITERATIONS      = 14415;
+        [ScriptConstant]
+        public const int PHYS_PARAM_SPRING_AXIS_ENABLE     = 14416;
+        [ScriptConstant]
+        public const int PHYS_PARAM_SPRING_DAMPING         = 14417;
+        [ScriptConstant]
+        public const int PHYS_PARAM_SPRING_STIFFNESS       = 14418;
+        [ScriptConstant]
+        public const int PHYS_PARAM_LINK_TYPE              = 14419;
+        [ScriptConstant]
+        public const int PHYS_PARAM_USE_LINEAR_FRAMEA      = 14420;
+        [ScriptConstant]
+        public const int PHYS_PARAM_SPRING_EQUILIBRIUM_POINT = 14421;
+
+        public const int PHYS_PARAM_MAX                    = 14421;
+
+        // Used when specifying a parameter that has settings for the three linear and three angular axis
+        [ScriptConstant]
+        public const int PHYS_AXIS_ALL = -1;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LINEAR_ALL = -2;
+        [ScriptConstant]
+        public const int PHYS_AXIS_ANGULAR_ALL = -3;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LINEAR_X  = 0;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LINEAR_Y  = 1;
+        [ScriptConstant]
+        public const int PHYS_AXIS_LINEAR_Z  = 2;
+        [ScriptConstant]
+        public const int PHYS_AXIS_ANGULAR_X = 3;
+        [ScriptConstant]
+        public const int PHYS_AXIS_ANGULAR_Y = 4;
+        [ScriptConstant]
+        public const int PHYS_AXIS_ANGULAR_Z = 5;
+
+        // physChangeLinkParams(integer linkNum, [ PHYS_PARAM_*, value, PHYS_PARAM_*, value, ...])
+        [ScriptInvocation]
+        public int physChangeLinkParams(UUID hostID, UUID scriptID, int linkNum, object[] parms)
+        {
+            int ret = -1;
+            if (!Enabled) return ret;
+
+            PhysicsActor rootPhysActor;
+            PhysicsActor childPhysActor;
+
+            if (GetRootAndChildPhysActors(hostID, linkNum, out rootPhysActor, out childPhysActor))
+            {
+                object[] parms2 = AddToBeginningOfArray(rootPhysActor, childPhysActor, parms);
+                ret = MakeIntError(rootPhysActor.Extension(PhysFunctChangeLinkParams, parms2));
+            }
+
+            return ret;
+        }
+
+        private bool GetRootPhysActor(UUID hostID, out PhysicsActor rootPhysActor)
+        {
+            SceneObjectGroup containingGroup;
+            SceneObjectPart rootPart;
+            return GetRootPhysActor(hostID, out containingGroup, out rootPart, out rootPhysActor);
+        }
+
+        private bool GetRootPhysActor(UUID hostID, out SceneObjectGroup containingGroup, out SceneObjectPart rootPart, out PhysicsActor rootPhysActor)
+        {
+            bool ret = false;
+            rootPhysActor = null;
+            containingGroup = null;
+            rootPart = null;
+
+            SceneObjectPart requestingPart;
+
+            requestingPart = BaseScene.GetSceneObjectPart(hostID);
+            if (requestingPart != null)
+            {
+                // The type is is always on the root of a linkset.
+                containingGroup = requestingPart.ParentGroup;
+                if (containingGroup != null && !containingGroup.IsDeleted)
+                {
+                    rootPart = containingGroup.RootPart;
+                    if (rootPart != null)
+                    {
+                        rootPhysActor = rootPart.PhysActor;
+                        if (rootPhysActor != null)
+                        {
+                            ret = true;
+                        }
+                        else
+                        {
+                            m_log.WarnFormat("{0} GetRootAndChildPhysActors: Root part does not have a physics actor. rootName={1}, hostID={2}",
+                                            LogHeader, rootPart.Name, hostID);
+                        }
+                    }
+                    else
+                    {
+                        m_log.WarnFormat("{0} GetRootAndChildPhysActors: Root part does not exist. RequestingPartName={1}, hostID={2}",
+                                        LogHeader, requestingPart.Name, hostID);
+                    }
+                }
+                else
+                {
+                    m_log.WarnFormat("{0} GetRootAndChildPhysActors: Containing group missing or deleted. hostID={1}", LogHeader, hostID);
+                }
+            }
+            else
+            {
+                m_log.WarnFormat("{0} GetRootAndChildPhysActors: cannot find script object in scene. hostID={1}", LogHeader, hostID);
+            }
+
+            return ret;
+        }
+
+        // Find the root and child PhysActors based on the linkNum.
+        // Return 'true' if both are found and returned.
+        private bool GetRootAndChildPhysActors(UUID hostID, int linkNum, out PhysicsActor rootPhysActor, out PhysicsActor childPhysActor)
+        {
+            bool ret = false;
+            rootPhysActor = null;
+            childPhysActor = null;
+
+            SceneObjectGroup containingGroup;
+            SceneObjectPart rootPart;
+
+            if (GetRootPhysActor(hostID, out containingGroup, out rootPart, out rootPhysActor))
+            {
+                SceneObjectPart linkPart = containingGroup.GetLinkNumPart(linkNum);
+                if (linkPart != null)
+                {
+                    childPhysActor = linkPart.PhysActor;
+                    if (childPhysActor != null)
+                    {
+                        ret = true;
+                    }
+                    else
+                    {
+                        m_log.WarnFormat("{0} GetRootAndChildPhysActors: Link part has no physical actor. rootName={1}, hostID={2}, linknum={3}",
+                                            LogHeader, rootPart.Name, hostID, linkNum);
+                    }
+                }
+                else
+                {
+                    m_log.WarnFormat("{0} GetRootAndChildPhysActors: Could not find linknum part. rootName={1}, hostID={2}, linknum={3}",
+                                        LogHeader, rootPart.Name, hostID, linkNum);
+                }
+            }
+            else
+            {
+                m_log.WarnFormat("{0} GetRootAndChildPhysActors: Root part does not have a physics actor. rootName={1}, hostID={2}",
+                                LogHeader, rootPart.Name, hostID);
+            }
+
+            return ret;
+        }
+
+        // Return an array of objects with the passed object as the first object of a new array
+        private object[] AddToBeginningOfArray(object firstOne, object secondOne, object[] prevArray)
+        {
+            object[] newArray = new object[2 + prevArray.Length];
+            newArray[0] = firstOne;
+            newArray[1] = secondOne;
+            prevArray.CopyTo(newArray, 2);
+            return newArray;
+        }
+
+        // Extension() returns an object. Convert that object into the integer error we expect to return.
+        private int MakeIntError(object extensionRet)
+        {
+            int ret = -1;
+            if (extensionRet != null)
+            {
+                try
+                {
+                    ret = (int)extensionRet;
+                }
+                catch
+                {
+                    ret = -1;
+                }
+            }
+            return ret;
+        }
+    }
+}
diff --git a/OpenSim/Region/Physics/BulletSPlugin/Properties/AssemblyInfo.cs b/OpenSim/Region/PhysicsModules/BulletS/Properties/AssemblyInfo.cs
index 4f90eee..5a33bdf 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/Properties/AssemblyInfo.cs
@@ -1,6 +1,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using Mono.Addins;
 
 // General Information about an assembly is controlled through the following 
 // set of attributes. Change these attribute values to modify the information
@@ -31,3 +32,5 @@ using System.Runtime.InteropServices;
 //
 [assembly: AssemblyVersion("0.8.2.*")]
 
+[assembly: Addin("OpenSim.Region.PhysicsModule.BulletS", OpenSim.VersionInfo.VersionNumber)]
+[assembly: AddinDependency("OpenSim.Region.Framework", OpenSim.VersionInfo.VersionNumber)]
diff --git a/OpenSim/Region/Physics/BulletSPlugin/Tests/BasicVehicles.cs b/OpenSim/Region/PhysicsModules/BulletS/Tests/BasicVehicles.cs
index 48e74eb..35eba29 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/Tests/BasicVehicles.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/Tests/BasicVehicles.cs
@@ -34,13 +34,13 @@ using NUnit.Framework;
 using log4net;
 
 using OpenSim.Framework;
-using OpenSim.Region.Physics.BulletSPlugin;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModule.BulletS;
+using OpenSim.Region.PhysicsModules.SharedBase;
 using OpenSim.Tests.Common;
 
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin.Tests
+namespace OpenSim.Region.PhysicsModule.BulletS.Tests
 {
 [TestFixture]
 public class BasicVehicles : OpenSimTestCase
diff --git a/OpenSim/Region/Physics/BulletSPlugin/Tests/BulletSimTests.cs b/OpenSim/Region/PhysicsModules/BulletS/Tests/BulletSimTests.cs
index 35cbc1d..0be1f4c 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/Tests/BulletSimTests.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/Tests/BulletSimTests.cs
@@ -35,7 +35,7 @@ using log4net;
 

 using OpenSim.Tests.Common;

 

-namespace OpenSim.Region.Physics.BulletSPlugin.Tests

+namespace OpenSim.Region.PhysicsModule.BulletS.Tests

 {

 [TestFixture]

 public class BulletSimTests : OpenSimTestCase

diff --git a/OpenSim/Region/Physics/BulletSPlugin/Tests/BulletSimTestsUtil.cs b/OpenSim/Region/PhysicsModules/BulletS/Tests/BulletSimTestsUtil.cs
index 775bca2..4eeea4d 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/Tests/BulletSimTestsUtil.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/Tests/BulletSimTestsUtil.cs
@@ -33,12 +33,13 @@ using System.Text;
 using Nini.Config;
 
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-using OpenSim.Region.Physics.Meshing;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.PhysicsModules.Meshing;
+using OpenSim.Region.Framework.Interfaces;
 
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin.Tests
+namespace OpenSim.Region.PhysicsModule.BulletS.Tests
 {
 // Utility functions for building up and tearing down the sample physics environments
 public static class BulletSimTestsUtil
@@ -78,22 +79,30 @@ public static class BulletSimTestsUtil
             bulletSimConfig.Set("VehicleLoggingEnabled","True");
         }
 
-        PhysicsPluginManager physicsPluginManager;
-        physicsPluginManager = new PhysicsPluginManager();
-        physicsPluginManager.LoadPluginsFromAssemblies("Physics");
-
         Vector3 regionExtent = new Vector3(Constants.RegionSize, Constants.RegionSize, Constants.RegionHeight);
        
-        PhysicsScene pScene = physicsPluginManager.GetPhysicsScene(
-                        "BulletSim", "Meshmerizer", openSimINI, "BSTestRegion", regionExtent);
+        RegionInfo info = new RegionInfo();
+        info.RegionName = "BSTestRegion";
+        info.RegionSizeX = info.RegionSizeY = info.RegionSizeZ = Constants.RegionSize;
+        OpenSim.Region.Framework.Scenes.Scene scene = new OpenSim.Region.Framework.Scenes.Scene(info);
+
+        IMesher mesher = new OpenSim.Region.PhysicsModules.Meshing.Meshmerizer();
+        INonSharedRegionModule mod = mesher as INonSharedRegionModule;
+        mod.Initialise(openSimINI);
+        mod.AddRegion(scene);
+        mod.RegionLoaded(scene);
 
-        BSScene bsScene = pScene as BSScene;
+        BSScene pScene = new BSScene();
+        mod = (pScene as INonSharedRegionModule);
+        mod.Initialise(openSimINI);
+        mod.AddRegion(scene);
+        mod.RegionLoaded(scene);
 
         // Since the asset requestor is not initialized, any mesh or sculptie will be a cube.
         // In the future, add a fake asset fetcher to get meshes and sculpts.
         // bsScene.RequestAssetMethod = ???;
 
-        return bsScene;
+        return pScene;
     }
 
 }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/Tests/HullCreation.cs b/OpenSim/Region/PhysicsModules/BulletS/Tests/HullCreation.cs
index 5a5de11..c0cf19a 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/Tests/HullCreation.cs
+++ b/OpenSim/Region/PhysicsModules/BulletS/Tests/HullCreation.cs
@@ -34,13 +34,13 @@ using NUnit.Framework;
 using log4net;
 
 using OpenSim.Framework;
-using OpenSim.Region.Physics.BulletSPlugin;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModule.BulletS;
+using OpenSim.Region.PhysicsModules.SharedBase;
 using OpenSim.Tests.Common;
 
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.BulletSPlugin.Tests
+namespace OpenSim.Region.PhysicsModule.BulletS.Tests
 {
 [TestFixture]
 public class HullCreation : OpenSimTestCase
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/CTri.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/CTri.cs
index 4d84c44..7ad689e 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/CTri.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/CTri.cs
@@ -28,7 +28,7 @@
 using System;
 using System.Collections.Generic;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class Wpoint
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Concavity.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/Concavity.cs
index cc6383a..4140d25 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Concavity.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/Concavity.cs
@@ -29,7 +29,7 @@ using System;
 using System.Collections.Generic;
 using System.Text;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public static class Concavity
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/ConvexBuilder.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/ConvexBuilder.cs
index dfaede1..70c3a2b 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/ConvexBuilder.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/ConvexBuilder.cs
@@ -29,7 +29,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class DecompDesc
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/ConvexDecomposition.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/ConvexDecomposition.cs
index 2e2bb70..5046bce 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/ConvexDecomposition.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/ConvexDecomposition.cs
@@ -29,7 +29,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public delegate void ConvexDecompositionCallback(ConvexResult result);
 
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/ConvexResult.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/ConvexResult.cs
index 87758b5..44e3e50 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/ConvexResult.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/ConvexResult.cs
@@ -28,7 +28,7 @@
 using System;
 using System.Collections.Generic;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class ConvexResult
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/HullClasses.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/HullClasses.cs
index d81df26..8a0164e 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/HullClasses.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/HullClasses.cs
@@ -28,7 +28,7 @@
 using System;
 using System.Collections.Generic;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class HullResult
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/HullTriangle.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/HullTriangle.cs
index 1119a75..d3f0052 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/HullTriangle.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/HullTriangle.cs
@@ -29,7 +29,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class HullTriangle : int3
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/HullUtils.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/HullUtils.cs
index c9ccfe2..3903254 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/HullUtils.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/HullUtils.cs
@@ -29,7 +29,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public static class HullUtils
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/LICENSE.txt b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/LICENSE.txt
index 714ae89..714ae89 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/LICENSE.txt
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/LICENSE.txt
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Plane.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/Plane.cs
index d099676..da9ae0c 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Plane.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/Plane.cs
@@ -27,7 +27,7 @@
 
 using System;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class Plane
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/PlaneTri.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/PlaneTri.cs
index 31f0182..42f7a22 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/PlaneTri.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/PlaneTri.cs
@@ -29,7 +29,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public enum PlaneTriResult : int
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Properties/AssemblyInfo.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/Properties/AssemblyInfo.cs
index c5867b2..c5867b2 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/Properties/AssemblyInfo.cs
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Quaternion.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/Quaternion.cs
index 0ba8f17..045f620 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Quaternion.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/Quaternion.cs
@@ -27,7 +27,7 @@
 
 using System;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class Quaternion : float4
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/README.txt b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/README.txt
index fc53ae7..fc53ae7 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/README.txt
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/README.txt
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/SplitPlane.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/SplitPlane.cs
index 9f06a9a..9f56bc5 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/SplitPlane.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/SplitPlane.cs
@@ -28,7 +28,7 @@
 using System;
 using System.Collections.Generic;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class Rect3d
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/VertexLookup.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/VertexLookup.cs
index 6f17c9f..bfe11e5 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/VertexLookup.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/VertexLookup.cs
@@ -28,7 +28,7 @@
 using System;
 using System.Collections.Generic;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class VertexPool
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float2.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float2.cs
index ce88fc8..e7358c1 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float2.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float2.cs
@@ -27,7 +27,7 @@
 
 using System;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class float2
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float3.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float3.cs
index 4389114..fde9b32 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float3.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float3.cs
@@ -27,7 +27,7 @@
 
 using System;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class float3 : IEquatable<float3>
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float3x3.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float3x3.cs
index 76cf063..c420fde 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float3x3.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float3x3.cs
@@ -29,7 +29,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class float3x3
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float4.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float4.cs
index fa60876..b2b6fd3 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float4.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float4.cs
@@ -27,7 +27,7 @@
 
 using System;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class float4
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float4x4.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float4x4.cs
index 7d1592f..087eba7 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/float4x4.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/float4x4.cs
@@ -30,7 +30,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class float4x4
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/int3.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/int3.cs
index 9c5760d..90624eb 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/int3.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/int3.cs
@@ -27,7 +27,7 @@
 
 using System;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class int3
     {
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/int4.cs b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/int4.cs
index c2b32e5..e9320c0 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/int4.cs
+++ b/OpenSim/Region/PhysicsModules/ConvexDecompositionDotNet/int4.cs
@@ -27,7 +27,7 @@
 
 using System;
 
-namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
+namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
 {
     public class int4
     {
diff --git a/OpenSim/Region/Physics/Meshing/HelperTypes.cs b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/HelperTypes.cs
index 8cd8dcf..34a925d 100644
--- a/OpenSim/Region/Physics/Meshing/HelperTypes.cs
+++ b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/HelperTypes.cs
@@ -30,8 +30,8 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Globalization;
 using OpenMetaverse;
-using OpenSim.Region.Physics.Manager;
-using OpenSim.Region.Physics.Meshing;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.PhysicsModules.Meshing;
 
 public class Vertex : IComparable<Vertex>
 {
diff --git a/OpenSim/Region/Physics/Meshing/Mesh.cs b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/Mesh.cs
index e6b32e7..8c97f2f 100644
--- a/OpenSim/Region/Physics/Meshing/Mesh.cs
+++ b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/Mesh.cs
@@ -29,11 +29,11 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Runtime.InteropServices;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 using PrimMesher;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Meshing
+namespace OpenSim.Region.PhysicsModules.Meshing
 {
     public class Mesh : IMesh
     {
diff --git a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/Meshmerizer.cs
index ef6482a..bae3449 100644
--- a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
+++ b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/Meshmerizer.cs
@@ -28,8 +28,12 @@
 
 using System;
 using System.Collections.Generic;
+using System.Reflection;
+using System.IO;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.PhysicsModules.SharedBase;
 using OpenMetaverse;
 using OpenMetaverse.StructuredData;
 using System.Drawing;
@@ -38,29 +42,12 @@ using System.IO.Compression;
 using PrimMesher;
 using log4net;
 using Nini.Config;
-using System.Reflection;
-using System.IO;
+using Mono.Addins;
 
-namespace OpenSim.Region.Physics.Meshing
+namespace OpenSim.Region.PhysicsModules.Meshing
 {
-    public class MeshmerizerPlugin : IMeshingPlugin
-    {
-        public MeshmerizerPlugin()
-        {
-        }
-
-        public string GetName()
-        {
-            return "Meshmerizer";
-        }
-
-        public IMesher GetMesher(IConfigSource config)
-        {
-            return new Meshmerizer(config);
-        }
-    }
-
-    public class Meshmerizer : IMesher
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "Meshmerizer")]
+    public class Meshmerizer : IMesher, INonSharedRegionModule
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
         private static string LogHeader = "[MESH]";
@@ -72,6 +59,8 @@ namespace OpenSim.Region.Physics.Meshing
 #else
         private const string baseDir = null; //"rawFiles";
 #endif
+        private bool m_Enabled = false;
+
         // If 'true', lots of DEBUG logging of asset parsing details
         private bool debugDetail = false;
 
@@ -87,30 +76,79 @@ namespace OpenSim.Region.Physics.Meshing
         // Mesh cache. Static so it can be shared across instances of this class
         private static Dictionary<ulong, Mesh> m_uniqueMeshes = new Dictionary<ulong, Mesh>();
 
-        public Meshmerizer(IConfigSource config)
+        #region INonSharedRegionModule
+        public string Name
         {
-            IConfig start_config = config.Configs["Startup"];
-            IConfig mesh_config = config.Configs["Mesh"];
+            get { return "Meshmerizer"; }
+        }
 
-            decodedSculptMapPath = start_config.GetString("DecodedSculptMapPath","j2kDecodeCache");
-            cacheSculptMaps = start_config.GetBoolean("CacheSculptMaps", cacheSculptMaps);
-            if (mesh_config != null)
-            {
-                useMeshiesPhysicsMesh = mesh_config.GetBoolean("UseMeshiesPhysicsMesh", useMeshiesPhysicsMesh);
-                debugDetail = mesh_config.GetBoolean("LogMeshDetails", debugDetail);
-            }
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
 
-            try
-            {
-                if (!Directory.Exists(decodedSculptMapPath))
-                    Directory.CreateDirectory(decodedSculptMapPath);
-            }
-            catch (Exception e)
+        public void Initialise(IConfigSource source)
+        {
+            IConfig config = source.Configs["Startup"];
+            if (config != null)
             {
-                m_log.WarnFormat("[SCULPT]: Unable to create {0} directory: ", decodedSculptMapPath, e.Message);
+                string mesher = config.GetString("meshing", string.Empty);
+                if (mesher == Name)
+                {
+                    m_Enabled = true;
+
+                    IConfig mesh_config = source.Configs["Mesh"];
+
+                    decodedSculptMapPath = config.GetString("DecodedSculptMapPath", "j2kDecodeCache");
+                    cacheSculptMaps = config.GetBoolean("CacheSculptMaps", cacheSculptMaps);
+                    if (mesh_config != null)
+                    {
+                        useMeshiesPhysicsMesh = mesh_config.GetBoolean("UseMeshiesPhysicsMesh", useMeshiesPhysicsMesh);
+                        debugDetail = mesh_config.GetBoolean("LogMeshDetails", debugDetail);
+                    }
+
+                    try
+                    {
+                        if (!Directory.Exists(decodedSculptMapPath))
+                            Directory.CreateDirectory(decodedSculptMapPath);
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.WarnFormat("[SCULPT]: Unable to create {0} directory: ", decodedSculptMapPath, e.Message);
+                    }
+
+                }
             }
         }
 
+        public void Close()
+        {
+        }
+
+        public void AddRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            scene.RegisterModuleInterface<IMesher>(this);
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            scene.UnregisterModuleInterface<IMesher>(this);
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+        #endregion
+
+
         /// <summary>
         /// creates a simple box mesh of the specified size. This mesh is of very low vertex count and may
         /// be useful as a backup proxy when level of detail is not needed or when more complex meshes fail
diff --git a/OpenSim/Region/Physics/Meshing/PrimMesher.cs b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/PrimMesher.cs
index 4049ee1..4049ee1 100644
--- a/OpenSim/Region/Physics/Meshing/PrimMesher.cs
+++ b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/PrimMesher.cs
diff --git a/OpenSim/Region/Physics/Meshing/SculptMap.cs b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/SculptMap.cs
index b3d9cb6..b3d9cb6 100644
--- a/OpenSim/Region/Physics/Meshing/SculptMap.cs
+++ b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/SculptMap.cs
diff --git a/OpenSim/Region/Physics/Meshing/SculptMesh.cs b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/SculptMesh.cs
index 4a7f3ad..4a7f3ad 100644
--- a/OpenSim/Region/Physics/Meshing/SculptMesh.cs
+++ b/OpenSim/Region/PhysicsModules/Meshing/Meshmerizer/SculptMesh.cs
diff --git a/OpenSim/Region/RegionCombinerModule/Properties/AssemblyInfo.cs b/OpenSim/Region/PhysicsModules/Meshing/Properties/AssemblyInfo.cs
index 11b89d2..d6ac8b2 100644
--- a/OpenSim/Region/RegionCombinerModule/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/PhysicsModules/Meshing/Properties/AssemblyInfo.cs
@@ -6,7 +6,7 @@ using Mono.Addins;
 // General Information about an assembly is controlled through the following 
 // set of attributes. Change these attribute values to modify the information
 // associated with an assembly.
-[assembly: AssemblyTitle("OpenSim.Region.RegionCombinerModule")]
+[assembly: AssemblyTitle("OpenSim.Region.PhysicsModules.Meshing")]
 [assembly: AssemblyDescription("")]
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("http://opensimulator.org")]
@@ -21,7 +21,7 @@ using Mono.Addins;
 [assembly: ComVisible(false)]
 
 // The following GUID is for the ID of the typelib if this project is exposed to COM
-[assembly: Guid("73c166d2-c9d8-4ab8-af4e-89c41b4b58a9")]
+[assembly: Guid("4b7e35c2-a9dd-4b10-b778-eb417f4f6884")]
 
 // Version information for an assembly consists of the following four values:
 //
@@ -32,5 +32,5 @@ using Mono.Addins;
 //
 [assembly: AssemblyVersion("0.8.2.*")]
 
-[assembly: Addin("OpenSim.RegionModules.RegionCombinerModule", OpenSim.VersionInfo.VersionNumber)]
+[assembly: Addin("OpenSim.Region.PhysicsModules.Meshing", OpenSim.VersionInfo.VersionNumber)]
 [assembly: AddinDependency("OpenSim.Region.Framework", OpenSim.VersionInfo.VersionNumber)]
diff --git a/OpenSim/Region/Physics/Manager/ZeroMesher.cs b/OpenSim/Region/PhysicsModules/Meshing/ZeroMesher.cs
index 890951f..09676c6 100644
--- a/OpenSim/Region/Physics/Manager/ZeroMesher.cs
+++ b/OpenSim/Region/PhysicsModules/Meshing/ZeroMesher.cs
@@ -26,9 +26,15 @@
  */
 
 using System;
+using System.Reflection;
 using OpenSim.Framework;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.PhysicsModules.SharedBase;
 using OpenMetaverse;
 using Nini.Config;
+using Mono.Addins;
+using log4net;
 
 /*
  * This is the zero mesher.
@@ -41,27 +47,67 @@ using Nini.Config;
  * it's always availabe and thus the default in case of configuration errors
 */
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.Meshing
 {
-    public class ZeroMesherPlugin : IMeshingPlugin
+
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "ZeroMesher")]
+    public class ZeroMesher : IMesher, INonSharedRegionModule
     {
-        public ZeroMesherPlugin()
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private bool m_Enabled = false;
+
+        #region INonSharedRegionModule
+        public string Name
         {
+            get { return "ZeroMesher"; }
         }
 
-        public string GetName()
+        public Type ReplaceableInterface
         {
-            return "ZeroMesher";
+            get { return null; }
         }
 
-        public IMesher GetMesher(IConfigSource config)
+        public void Initialise(IConfigSource source)
         {
-            return new ZeroMesher();
+            // TODO: Move this out of Startup
+            IConfig config = source.Configs["Startup"];
+            if (config != null)
+            {
+                // This is the default Mesher
+                string mesher = config.GetString("meshing", Name);
+                if (mesher == Name)
+                    m_Enabled = true;
+            }
         }
-    }
 
-    public class ZeroMesher : IMesher
-    {
+        public void Close()
+        {
+        }
+
+        public void AddRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            scene.RegisterModuleInterface<IMesher>(this);
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            scene.UnregisterModuleInterface<IMesher>(this);
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+        #endregion
+
+        #region IMesher
         public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
         {
             return CreateMesh(primName, primShape, size, lod, false);
@@ -93,5 +139,7 @@ namespace OpenSim.Region.Physics.Manager
         public void ReleaseMesh(IMesh mesh) { }
         public void ExpireReleaseMeshs() { }
         public void ExpireFileCache() { }
+
+        #endregion
     }
 }
diff --git a/OpenSim/Region/Physics/OdePlugin/AssemblyInfo.cs b/OpenSim/Region/PhysicsModules/Ode/AssemblyInfo.cs
index 076da78..7869739 100644
--- a/OpenSim/Region/Physics/OdePlugin/AssemblyInfo.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/AssemblyInfo.cs
@@ -27,6 +27,7 @@
 
 using System.Reflection;
 using System.Runtime.InteropServices;
+using Mono.Addins;
 
 // Information about this assembly is defined by the following
 // attributes.
@@ -56,3 +57,6 @@ using System.Runtime.InteropServices;
 // numbers with the '*' character (the default):
 
 [assembly : AssemblyVersion("0.8.2.*")]
+
+[assembly: Addin("OpenSim.Region.PhysicsModule.ODE", OpenSim.VersionInfo.VersionNumber)]
+[assembly: AddinDependency("OpenSim.Region.Framework", OpenSim.VersionInfo.VersionNumber)]
diff --git a/OpenSim/Region/Physics/OdePlugin/ODECharacter.cs b/OpenSim/Region/PhysicsModules/Ode/ODECharacter.cs
index 05eaf2a..b35c299 100644
--- a/OpenSim/Region/Physics/OdePlugin/ODECharacter.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/ODECharacter.cs
@@ -31,10 +31,10 @@ using System.Reflection;
 using OpenMetaverse;
 using Ode.NET;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 using log4net;
 
-namespace OpenSim.Region.Physics.OdePlugin
+namespace OpenSim.Region.PhysicsModule.ODE
 {
     /// <summary>
     /// Various properties that ODE uses for AMotors but isn't exposed in ODE.NET so we must define them ourselves.
@@ -511,7 +511,7 @@ namespace OpenSim.Region.Physics.OdePlugin
             }
             else
             {
-                m_log.WarnFormat("[ODE CHARACTER]: Got a NaN Size for {0} in {1}", Name, _parent_scene.Name);
+                m_log.WarnFormat("[ODE CHARACTER]: Got a NaN Size for {0} in {1}", Name, _parent_scene.PhysicsSceneName);
             }
         }
 
diff --git a/OpenSim/Region/Physics/OdePlugin/ODEDynamics.c_comments b/OpenSim/Region/PhysicsModules/Ode/ODEDynamics.c_comments
index 1060aa6..1060aa6 100644
--- a/OpenSim/Region/Physics/OdePlugin/ODEDynamics.c_comments
+++ b/OpenSim/Region/PhysicsModules/Ode/ODEDynamics.c_comments
diff --git a/OpenSim/Region/Physics/OdePlugin/ODEDynamics.cs b/OpenSim/Region/PhysicsModules/Ode/ODEDynamics.cs
index 2342bfa..8f8e2bd 100644
--- a/OpenSim/Region/Physics/OdePlugin/ODEDynamics.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/ODEDynamics.cs
@@ -46,9 +46,9 @@ using log4net;
 using OpenMetaverse;
 using Ode.NET;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.OdePlugin
+namespace OpenSim.Region.PhysicsModule.ODE
 {
     public class ODEDynamics
     {
diff --git a/OpenSim/Region/Physics/OdePlugin/ODEPrim.cs b/OpenSim/Region/PhysicsModules/Ode/ODEPrim.cs
index 0a99e30..5e48de6 100644
--- a/OpenSim/Region/Physics/OdePlugin/ODEPrim.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/ODEPrim.cs
@@ -50,9 +50,9 @@ using log4net;
 using OpenMetaverse;
 using Ode.NET;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.OdePlugin
+namespace OpenSim.Region.PhysicsModule.ODE
 {
     /// <summary>
     /// Various properties that ODE uses for AMotors but isn't exposed in ODE.NET so we must define them ourselves.
@@ -3381,7 +3381,7 @@ Console.WriteLine(" JointCreateFixed");
             {
                 m_log.WarnFormat(
                     "[ODE PRIM]: Could not get mesh/sculpt asset {0} for {1} at {2} in {3}",
-                    _pbs.SculptTexture, Name, _position, _parent_scene.Name);
+                    _pbs.SculptTexture, Name, _position, _parent_scene.PhysicsSceneName);
             }
         }          
     }
diff --git a/OpenSim/Region/Physics/OdePlugin/ODERayCastRequestManager.cs b/OpenSim/Region/PhysicsModules/Ode/ODERayCastRequestManager.cs
index fa2ed3e..80f0fcf 100644
--- a/OpenSim/Region/Physics/OdePlugin/ODERayCastRequestManager.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/ODERayCastRequestManager.cs
@@ -31,11 +31,11 @@ using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Text;
 using OpenMetaverse;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 using Ode.NET;
 using log4net;
 
-namespace OpenSim.Region.Physics.OdePlugin
+namespace OpenSim.Region.PhysicsModule.ODE
 {
     /// <summary>
     /// Processes raycast requests as ODE is in a state to be able to do them.
@@ -172,7 +172,9 @@ namespace OpenSim.Region.Physics.OdePlugin
         /// <param name="req"></param>
         private void RayCast(ODERayCastRequest req)
         {
-            // limit ray lenght or collisions will take all avaiable stack space
+            // NOTE: limit ray lenght or collisions will take all avaiable stack space
+            // this value may still be too large, depending on machine configuration
+            // of maximum stack
             float len = req.length;
             if (len > 250f)
                 len = 250f;
@@ -441,4 +443,4 @@ namespace OpenSim.Region.Physics.OdePlugin
         public float length;
         public RayCallback callbackMethod;
     }
-}
\ No newline at end of file
+}
diff --git a/OpenSim/Region/Physics/OdePlugin/OdePhysicsJoint.cs b/OpenSim/Region/PhysicsModules/Ode/OdePhysicsJoint.cs
index b4a3c48..2eb7ba6 100644
--- a/OpenSim/Region/Physics/OdePlugin/OdePhysicsJoint.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/OdePhysicsJoint.cs
@@ -29,10 +29,10 @@ using System;
 using OpenMetaverse;
 using Ode.NET;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-using OpenSim.Region.Physics.OdePlugin;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.PhysicsModule.ODE;
 
-namespace OpenSim.Region.Physics.OdePlugin
+namespace OpenSim.Region.PhysicsModule.ODE
 {
     class OdePhysicsJoint : PhysicsJoint
     {
diff --git a/OpenSim/Region/Physics/OdePlugin/OdeScene.cs b/OpenSim/Region/PhysicsModules/Ode/OdeScene.cs
index 812b469..26210d6 100644
--- a/OpenSim/Region/Physics/OdePlugin/OdeScene.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/OdeScene.cs
@@ -25,13 +25,11 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-// Ubit changes for varsize regions
-// using a large Heightfield geometry for terrain
-// ODE ode should handle it fine
-// EXCEPT raycasts, those need to have limited range
+// changes for varsize regions
+// note that raycasts need to have limited range
 // (even in normal regions)
-// or aplication stack will just blowup
-
+// or aplication thread stack may just blowup
+// see RayCast(ODERayCastRequest req)
 
 //#define USE_DRAWSTUFF
 //#define SPAM
@@ -46,15 +44,19 @@ using System.Runtime.InteropServices;
 using System.Threading;
 using log4net;
 using Nini.Config;
+using Mono.Addins;
 using Ode.NET;
 using OpenMetaverse;
 #if USE_DRAWSTUFF
 using Drawstuff.NET;
 #endif 
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
+
 
-namespace OpenSim.Region.Physics.OdePlugin
+namespace OpenSim.Region.PhysicsModule.ODE
 {
     public enum StatusIndicators : int
     {
@@ -109,9 +111,12 @@ namespace OpenSim.Region.Physics.OdePlugin
         Rubber = 6
     }
 
-    public class OdeScene : PhysicsScene
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "ODEPhysicsScene")]
+    public class OdeScene : PhysicsScene, INonSharedRegionModule
     {
-        private readonly ILog m_log;
+        private readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType.ToString());
+        private bool m_Enabled = false;
+
         // private Dictionary<string, sCollisionData> m_storedCollisions = new Dictionary<string, sCollisionData>();
 
         /// <summary>
@@ -298,7 +303,7 @@ namespace OpenSim.Region.Physics.OdePlugin
         private int framecount = 0;
         //private int m_returncollisions = 10;
 
-        private readonly IntPtr contactgroup;
+        private IntPtr contactgroup;
 
 //        internal IntPtr WaterGeom;
 
@@ -530,19 +535,103 @@ namespace OpenSim.Region.Physics.OdePlugin
 
         private ODERayCastRequestManager m_rayCastManager;
 
+
+        #region INonSharedRegionModule
+        public string Name
+        {
+            get { return "OpenDynamicsEngine"; }
+        }
+
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
+
+        public void Initialise(IConfigSource source)
+        {
+            // TODO: Move this out of Startup
+            IConfig config = source.Configs["Startup"];
+            if (config != null)
+            {
+                string physics = config.GetString("physics", string.Empty);
+                if (physics == Name)
+                {
+                    m_Enabled = true;
+                    m_config = source;
+
+                    // We do this so that OpenSimulator on Windows loads the correct native ODE library depending on whether
+                    // it's running as a 32-bit process or a 64-bit one.  By invoking LoadLibary here, later DLLImports
+                    // will find it already loaded later on.
+                    //
+                    // This isn't necessary for other platforms (e.g. Mac OSX and Linux) since the DLL used can be
+                    // controlled in Ode.NET.dll.config
+                    if (Util.IsWindows())
+                        Util.LoadArchSpecificWindowsDll("ode.dll");
+
+                    // Initializing ODE only when a scene is created allows alternative ODE plugins to co-habit (according to
+                    // http://opensimulator.org/mantis/view.php?id=2750).
+                    d.InitODE();
+
+                }
+            }
+
+        }
+
+        public void Close()
+        {
+        }
+
+        public void AddRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            EngineType = Name;
+            PhysicsSceneName = EngineType + "/" + scene.RegionInfo.RegionName;
+
+            scene.RegisterModuleInterface<PhysicsScene>(this);
+            Vector3 extent = new Vector3(scene.RegionInfo.RegionSizeX, scene.RegionInfo.RegionSizeY, scene.RegionInfo.RegionSizeZ);
+            Initialise(extent);
+            InitialiseFromConfig(m_config);
+
+            // This may not be that good since terrain may not be avaiable at this point
+            base.Initialise(scene.PhysicsRequestAsset, 
+                (scene.Heightmap != null ? scene.Heightmap.GetFloatsSerialised() : new float[(int)(extent.X * extent.Y)]), 
+                (float)scene.RegionInfo.RegionSettings.WaterHeight);
+
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            mesher = scene.RequestModuleInterface<IMesher>();
+            if (mesher == null)
+                m_log.WarnFormat("[ODE SCENE]: No mesher in {0}. Things will not work well.", PhysicsSceneName);
+        }
+        #endregion
+
         /// <summary>
         /// Initiailizes the scene
         /// Sets many properties that ODE requires to be stable
         /// These settings need to be tweaked 'exactly' right or weird stuff happens.
         /// </summary>
-        /// <param value="name">Name of the scene.  Useful in debug messages.</param>
-        public OdeScene(string engineType, string name)
+        private void Initialise(Vector3 regionExtent)
         {
-            m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType.ToString() + "." + name);
-
-            Name = name;
-            EngineType = engineType;
-
+                        WorldExtents.X = regionExtent.X;
+            m_regionWidth = (uint)regionExtent.X;
+            WorldExtents.Y = regionExtent.Y;
+            m_regionHeight = (uint)regionExtent.Y;
+                        
+            m_suportCombine = false;
+                        
             nearCallback = near;
             triCallback = TriCallback;
             triArrayCallback = TriArrayCallback;
@@ -597,7 +686,6 @@ namespace OpenSim.Region.Physics.OdePlugin
         {
             InitializeExtraStats();
 
-            mesher = meshmerizer;
             m_config = config;
             // Defaults
 
@@ -725,11 +813,11 @@ namespace OpenSim.Region.Physics.OdePlugin
             spaceGridMaxX = (int)(WorldExtents.X * spacesPerMeterX);
             spaceGridMaxY = (int)(WorldExtents.Y * spacesPerMeterY);
 
-            // ubit: limit number of spaces
+            // note: limit number of spaces
             if (spaceGridMaxX > 24)
             {
                 spaceGridMaxX = 24;
-                spacesPerMeterX = spaceGridMaxX / WorldExtents.X ;
+                spacesPerMeterX =  spaceGridMaxX / WorldExtents.X;
             }
             if (spaceGridMaxY > 24)
             {
@@ -1862,7 +1950,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                 }
                 catch (AccessViolationException)
                 {
-                    m_log.ErrorFormat("[ODE SCENE]: Unable to space collide {0}", Name);
+                    m_log.ErrorFormat("[ODE SCENE]: Unable to space collide {0}", PhysicsSceneName);
                 }
                 
                 //float terrainheight = GetTerrainHeightAtXY(chr.Position.X, chr.Position.Y);
@@ -3119,7 +3207,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                             {
                                 m_log.ErrorFormat(
                                     "[ODE SCENE]: Removing physics character {0} {1} from physics scene {2} due to defect found when moving",
-                                    actor.Name, actor.LocalID, Name);
+                                    actor.Name, actor.LocalID, PhysicsSceneName);
 
                                 RemoveCharacter(actor);
                                 actor.DestroyOdeStructures();
@@ -3236,7 +3324,7 @@ namespace OpenSim.Region.Physics.OdePlugin
                     {
                         m_log.ErrorFormat(
                             "[ODE SCENE]: Removing physics character {0} {1} from physics scene {2} due to defect found when updating position and velocity",
-                            actor.Name, actor.LocalID, Name);
+                            actor.Name, actor.LocalID, PhysicsSceneName);
 
                         RemoveCharacter(actor);
                         actor.DestroyOdeStructures();
@@ -3835,7 +3923,7 @@ namespace OpenSim.Region.Physics.OdePlugin
         private void SetTerrain(float[] heightMap, Vector3 pOffset)
         {
             int startTime = Util.EnvironmentTickCount();
-            m_log.DebugFormat("[ODE SCENE]: Setting terrain for {0} with offset {1}", Name, pOffset);
+            m_log.DebugFormat("[ODE SCENE]: Setting terrain for {0} with offset {1}", PhysicsSceneName, pOffset);
 
             
             float[] _heightmap;
@@ -3873,6 +3961,7 @@ namespace OpenSim.Region.Physics.OdePlugin
             uint xt = 0;
             xx = 0;
 
+
             for (uint x = 0; x < heightmapWidthSamples; x++)
             {
                 if (x > 1 && xx < maxXX)
@@ -3951,7 +4040,7 @@ namespace OpenSim.Region.Physics.OdePlugin
             }
 
             m_log.DebugFormat(
-                "[ODE SCENE]: Setting terrain for {0} took {1}ms", Name, Util.EnvironmentTickCountSubtract(startTime));
+                "[ODE SCENE]: Setting terrain for {0} took {1}ms", PhysicsSceneName, Util.EnvironmentTickCountSubtract(startTime));
         }
 
         public override void DeleteTerrain()
diff --git a/OpenSim/Region/Physics/OdePlugin/Tests/ODETestClass.cs b/OpenSim/Region/PhysicsModules/Ode/Tests/ODETestClass.cs
index 16404c6..6dc22bd 100644
--- a/OpenSim/Region/Physics/OdePlugin/Tests/ODETestClass.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/Tests/ODETestClass.cs
@@ -30,51 +30,74 @@ using Nini.Config;
 using NUnit.Framework;
 using OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
-using OpenSim.Region.Physics.OdePlugin;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.PhysicsModule.ODE;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Tests.Common;
 using log4net;
 using System.Reflection;
 
-namespace OpenSim.Region.Physics.OdePlugin.Tests
+namespace OpenSim.Region.PhysicsModule.ODE.Tests
 {
     [TestFixture]
     public class ODETestClass : OpenSimTestCase
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        private OpenSim.Region.Physics.OdePlugin.OdePlugin cbt;
-        private PhysicsScene ps;
-        private IMeshingPlugin imp;
+        //private OpenSim.Region.PhysicsModule.ODE.OdePlugin cbt;
+        private PhysicsScene pScene;
 
         [SetUp]
         public void Initialize()
         {
-            IConfigSource TopConfig = new IniConfigSource();
-            IConfig config = TopConfig.AddConfig("Startup");
-            config.Set("DecodedSculptMapPath","j2kDecodeCache");
+            IConfigSource openSimINI = new IniConfigSource();
+            IConfig startupConfig = openSimINI.AddConfig("Startup");
+            startupConfig.Set("physics", "OpenDynamicsEngine");
+            startupConfig.Set("DecodedSculptMapPath", "j2kDecodeCache");
+
+            Vector3 regionExtent = new Vector3(Constants.RegionSize, Constants.RegionSize, Constants.RegionHeight);
+
+            //PhysicsScene pScene = physicsPluginManager.GetPhysicsScene(
+            //                "BulletSim", "Meshmerizer", openSimINI, "BSTestRegion", regionExtent);
+            RegionInfo info = new RegionInfo();
+            info.RegionName = "ODETestRegion";
+            info.RegionSizeX = info.RegionSizeY = info.RegionSizeZ = Constants.RegionSize;
+            OpenSim.Region.Framework.Scenes.Scene scene = new OpenSim.Region.Framework.Scenes.Scene(info);
+
+            //IMesher mesher = new OpenSim.Region.PhysicsModules.Meshing.Meshmerizer();
+            //INonSharedRegionModule mod = mesher as INonSharedRegionModule;
+            //mod.Initialise(openSimINI);
+            //mod.AddRegion(scene);
+            //mod.RegionLoaded(scene);
+
+            pScene = new OdeScene();
+            Console.WriteLine("HERE " + (pScene == null ? "Null" : "Not null"));
+            INonSharedRegionModule mod = (pScene as INonSharedRegionModule);
+            Console.WriteLine("HERE " + (mod == null ? "Null" : "Not null"));
+            mod.Initialise(openSimINI);
+            mod.AddRegion(scene);
+            mod.RegionLoaded(scene);
 
             // Loading ODEPlugin
-            cbt = new OdePlugin();
-            // Loading Zero Mesher
-            imp = new ZeroMesherPlugin();
+            //cbt = new OdePlugin();
             // Getting Physics Scene
-            ps = cbt.GetScene("test");
+            //ps = cbt.GetScene("test");
             // Initializing Physics Scene.
-            ps.Initialise(imp.GetMesher(TopConfig),null);
+            //ps.Initialise(imp.GetMesher(TopConfig), null, Vector3.Zero);
             float[] _heightmap = new float[(int)Constants.RegionSize * (int)Constants.RegionSize];
             for (int i = 0; i < ((int)Constants.RegionSize * (int)Constants.RegionSize); i++)
             {
                 _heightmap[i] = 21f;
             }
-            ps.SetTerrain(_heightmap);
+            pScene.SetTerrain(_heightmap);
         }
 
         [TearDown]
         public void Terminate()
         {
-            ps.DeleteTerrain();
-            ps.Dispose();
+            pScene.DeleteTerrain();
+            pScene.Dispose();
 
         }
 
@@ -85,9 +108,9 @@ namespace OpenSim.Region.Physics.OdePlugin.Tests
             Vector3 position = new Vector3(((float)Constants.RegionSize * 0.5f), ((float)Constants.RegionSize * 0.5f), 128f);
             Vector3 size = new Vector3(0.5f, 0.5f, 0.5f);
             Quaternion rot = Quaternion.Identity;
-            PhysicsActor prim = ps.AddPrimShape("CoolShape", newcube, position, size, rot, true, 0);
+            PhysicsActor prim = pScene.AddPrimShape("CoolShape", newcube, position, size, rot, true, 0);
             OdePrim oprim = (OdePrim)prim;
-            OdeScene pscene = (OdeScene) ps;
+            OdeScene pscene = (OdeScene)pScene;
 
             Assert.That(oprim.m_taintadd);
 
@@ -95,7 +118,7 @@ namespace OpenSim.Region.Physics.OdePlugin.Tests
 
             for (int i = 0; i < 58; i++)
             {
-                ps.Simulate(0.133f);
+                pScene.Simulate(0.133f);
 
                 Assert.That(oprim.prim_geom != (IntPtr)0);
 
@@ -119,9 +142,9 @@ namespace OpenSim.Region.Physics.OdePlugin.Tests
             // Make sure we're not somewhere above the ground
             Assert.That(prim.Position.Z < 21.5f);
 
-            ps.RemovePrim(prim);
+            pScene.RemovePrim(prim);
             Assert.That(oprim.m_taintremove);
-            ps.Simulate(0.133f);
+            pScene.Simulate(0.133f);
             Assert.That(oprim.Body == (IntPtr)0);
         }
     }
diff --git a/OpenSim/Region/Physics/OdePlugin/drawstuff.cs b/OpenSim/Region/PhysicsModules/Ode/drawstuff.cs
index 87ca446..87ca446 100644
--- a/OpenSim/Region/Physics/OdePlugin/drawstuff.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/drawstuff.cs
diff --git a/OpenSim/Region/Physics/POSPlugin/AssemblyInfo.cs b/OpenSim/Region/PhysicsModules/POS/AssemblyInfo.cs
index fc1ffba..e3a3e35 100644
--- a/OpenSim/Region/Physics/POSPlugin/AssemblyInfo.cs
+++ b/OpenSim/Region/PhysicsModules/POS/AssemblyInfo.cs
@@ -27,6 +27,7 @@
 
 using System.Reflection;
 using System.Runtime.InteropServices;
+using Mono.Addins;
 
 // Information about this assembly is defined by the following
 // attributes.
@@ -56,3 +57,6 @@ using System.Runtime.InteropServices;
 // numbers with the '*' character (the default):
 
 [assembly : AssemblyVersion("0.8.2.*")]
+
+[assembly: Addin("OpenSim.Region.PhysicsModule.POS", OpenSim.VersionInfo.VersionNumber)]
+[assembly: AddinDependency("OpenSim.Region.Framework", OpenSim.VersionInfo.VersionNumber)]
diff --git a/OpenSim/Region/Physics/POSPlugin/POSCharacter.cs b/OpenSim/Region/PhysicsModules/POS/POSCharacter.cs
index 40ab984..32469d9 100644
--- a/OpenSim/Region/Physics/POSPlugin/POSCharacter.cs
+++ b/OpenSim/Region/PhysicsModules/POS/POSCharacter.cs
@@ -30,9 +30,9 @@ using System.Collections.Generic;
 using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.POSPlugin
+namespace OpenSim.Region.PhysicsModule.POS
 {
     public class POSCharacter : PhysicsActor
     {
diff --git a/OpenSim/Region/Physics/POSPlugin/POSPrim.cs b/OpenSim/Region/PhysicsModules/POS/POSPrim.cs
index 782ba82..c190fab 100644
--- a/OpenSim/Region/Physics/POSPlugin/POSPrim.cs
+++ b/OpenSim/Region/PhysicsModules/POS/POSPrim.cs
@@ -30,9 +30,9 @@ using System.Collections.Generic;
 using Nini.Config;
 using OpenMetaverse;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
 
-namespace OpenSim.Region.Physics.POSPlugin
+namespace OpenSim.Region.PhysicsModule.POS
 {
     public class POSPrim : PhysicsActor
     {
diff --git a/OpenSim/Region/Physics/POSPlugin/POSScene.cs b/OpenSim/Region/PhysicsModules/POS/POSScene.cs
index 061304a..e6bcbf2 100644
--- a/OpenSim/Region/Physics/POSPlugin/POSScene.cs
+++ b/OpenSim/Region/PhysicsModules/POS/POSScene.cs
@@ -29,31 +29,81 @@ using System;
 using System.Collections.Generic;
 using Nini.Config;
 using OpenMetaverse;
+using Mono.Addins;
 using OpenSim.Framework;
-using OpenSim.Region.Physics.Manager;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
 
-namespace OpenSim.Region.Physics.POSPlugin
+namespace OpenSim.Region.PhysicsModule.POS
 {
-    public class POSScene : PhysicsScene
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "POSPhysicsScene")]
+    public class POSScene : PhysicsScene, INonSharedRegionModule
     {
         private List<POSCharacter> _characters = new List<POSCharacter>();
         private List<POSPrim> _prims = new List<POSPrim>();
         private float[] _heightMap;
         private const float gravity = -9.8f;
 
+        private bool m_Enabled = false;
         //protected internal string sceneIdentifier;
 
-        public POSScene(string engineType, String _sceneIdentifier)
+        #region INonSharedRegionModule
+        public string Name
         {
-            EngineType = engineType;
-            Name = EngineType + "/" + _sceneIdentifier;
-            //sceneIdentifier = _sceneIdentifier;
+            get { return "POS"; }
         }
 
-        public override void Initialise(IMesher meshmerizer, IConfigSource config)
+        public Type ReplaceableInterface
         {
+            get { return null; }
         }
 
+        public void Initialise(IConfigSource source)
+        {
+            // TODO: Move this out of Startup
+            IConfig config = source.Configs["Startup"];
+            if (config != null)
+            {
+                string physics = config.GetString("physics", string.Empty);
+                if (physics == Name)
+                    m_Enabled = true;
+            }
+
+        }
+
+        public void Close()
+        {
+        }
+
+        public void AddRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            EngineType = Name;
+            PhysicsSceneName = EngineType + "/" + scene.RegionInfo.RegionName;
+
+            scene.RegisterModuleInterface<PhysicsScene>(this);
+            base.Initialise(scene.PhysicsRequestAsset,
+                (scene.Heightmap != null ? scene.Heightmap.GetFloatsSerialised() : new float[Constants.RegionSize * Constants.RegionSize]),
+                (float)scene.RegionInfo.RegionSettings.WaterHeight);
+
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+        #endregion
+
         public override void Dispose()
         {
         }
diff --git a/OpenSim/Region/Physics/Manager/AssemblyInfo.cs b/OpenSim/Region/PhysicsModules/SharedBase/AssemblyInfo.cs
index 33f60e4..33f60e4 100644
--- a/OpenSim/Region/Physics/Manager/AssemblyInfo.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/AssemblyInfo.cs
diff --git a/OpenSim/Region/Physics/Manager/CollisionLocker.cs b/OpenSim/Region/PhysicsModules/SharedBase/CollisionLocker.cs
index cace4e4..6e658b5 100644
--- a/OpenSim/Region/Physics/Manager/CollisionLocker.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/CollisionLocker.cs
@@ -28,7 +28,7 @@
 using System;
 using System.Collections.Generic;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     public class CollisionLocker
     {
diff --git a/OpenSim/Region/Physics/Manager/IMesher.cs b/OpenSim/Region/PhysicsModules/SharedBase/IMesher.cs
index e290dc9..88169bb 100644
--- a/OpenSim/Region/Physics/Manager/IMesher.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/IMesher.cs
@@ -31,7 +31,7 @@ using System.Runtime.InteropServices;
 using OpenSim.Framework;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     public interface IMesher
     {
diff --git a/OpenSim/Region/Physics/Manager/IPhysicsParameters.cs b/OpenSim/Region/PhysicsModules/SharedBase/IPhysicsParameters.cs
index 31a397c..fb0c9e2 100755
--- a/OpenSim/Region/Physics/Manager/IPhysicsParameters.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/IPhysicsParameters.cs
@@ -30,7 +30,7 @@ using System.Collections.Generic;
 using OpenSim.Framework;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     public struct PhysParameterEntry
     {
diff --git a/OpenSim/Region/Physics/Manager/NullPhysicsScene.cs b/OpenSim/Region/PhysicsModules/SharedBase/NullPhysicsScene.cs
index b52f1f6..432708c 100644
--- a/OpenSim/Region/Physics/Manager/NullPhysicsScene.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/NullPhysicsScene.cs
@@ -32,7 +32,7 @@ using Nini.Config;
 using OpenSim.Framework;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     class NullPhysicsScene : PhysicsScene
     {
@@ -40,11 +40,6 @@ namespace OpenSim.Region.Physics.Manager
         
         private static int m_workIndicator;
 
-        public override void Initialise(IMesher meshmerizer, IConfigSource config)
-        {
-            // Does nothing right now
-        }
-
         public override PhysicsActor AddAvatar(
             string avName, Vector3 position, Vector3 velocity, Vector3 size, bool isFlying)
         {
diff --git a/OpenSim/Region/Physics/Manager/PhysicsActor.cs b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsActor.cs
index 60f6480..edc41e4 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsActor.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsActor.cs
@@ -32,7 +32,7 @@ using System.Reflection;
 using OpenSim.Framework;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     public delegate void PositionUpdate(Vector3 position);
     public delegate void VelocityUpdate(Vector3 velocity);
diff --git a/OpenSim/Region/Physics/Manager/PhysicsJoint.cs b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsJoint.cs
index b685d04..ce2bf05 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsJoint.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsJoint.cs
@@ -30,7 +30,7 @@ using System.Collections.Generic;
 using OpenSim.Framework;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     public enum PhysicsJointType : int
     {
diff --git a/OpenSim/Region/Physics/Manager/PhysicsScene.cs b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsScene.cs
index a9b30e1..1c0ad20 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsScene.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsScene.cs
@@ -35,7 +35,7 @@ using Nini.Config;
 using OpenSim.Framework;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     public delegate void physicsCrash();
 
@@ -104,7 +104,7 @@ namespace OpenSim.Region.Physics.Manager
         /// Useful in debug messages to distinguish one OdeScene instance from another.
         /// Usually set to include the region name that the physics engine is acting for.
         /// </summary>
-        public string Name { get; protected set; }
+        public string PhysicsSceneName { get; protected set; }
 
         /// <summary>
         /// A string identifying the family of this physics engine. Most common values returned
@@ -123,6 +123,14 @@ namespace OpenSim.Region.Physics.Manager
 
         public RequestAssetDelegate RequestAssetMethod { get; set; }
 
+        protected void Initialise(RequestAssetDelegate m, float[] terrain, float waterHeight)
+        {
+            RequestAssetMethod = m;
+            SetTerrain(terrain);
+            SetWaterLevel(waterHeight);
+
+        }
+
         public virtual void TriggerPhysicsBasedRestart()
         {
             physicsCrash handler = OnPhysicsCrash;
@@ -132,17 +140,6 @@ namespace OpenSim.Region.Physics.Manager
             }
         }
 
-        // Deprecated. Do not use this for new physics engines.
-        public abstract void Initialise(IMesher meshmerizer, IConfigSource config);
-
-        // For older physics engines that do not implement non-legacy region sizes.
-        // If the physics engine handles the region extent feature, it overrides this function.
-        public virtual void Initialise(IMesher meshmerizer, IConfigSource config, Vector3 regionExtent)
-        {
-            // If not overridden, call the old initialization entry.
-            Initialise(meshmerizer, config);
-        }
-
         /// <summary>
         /// Add an avatar
         /// </summary>
diff --git a/OpenSim/Region/Physics/Manager/PhysicsSensor.cs b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsSensor.cs
index f480d71..da9c96c 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsSensor.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsSensor.cs
@@ -29,7 +29,7 @@ using System;
 using System.Timers;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     [Flags]
     public enum SenseType : uint
diff --git a/OpenSim/Region/Physics/Manager/PhysicsVector.cs b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsVector.cs
index f60a636..76a82fa 100644
--- a/OpenSim/Region/Physics/Manager/PhysicsVector.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/PhysicsVector.cs
@@ -27,7 +27,7 @@
 
 using System;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     /*public class PhysicsVector
     {
diff --git a/OpenSim/Region/Physics/Manager/VehicleConstants.cs b/OpenSim/Region/PhysicsModules/SharedBase/VehicleConstants.cs
index 8e24b4c..e850b11 100644
--- a/OpenSim/Region/Physics/Manager/VehicleConstants.cs
+++ b/OpenSim/Region/PhysicsModules/SharedBase/VehicleConstants.cs
@@ -28,7 +28,7 @@
 using System;
 using OpenMetaverse;
 
-namespace OpenSim.Region.Physics.Manager
+namespace OpenSim.Region.PhysicsModules.SharedBase
 {
     public enum Vehicle : int
     {