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

4 files changed, 937 insertions, 0 deletions

diff --git a/OpenSim/Region/PhysicsModules/BasicPhysics/AssemblyInfo.cs b/OpenSim/Region/PhysicsModules/BasicPhysics/AssemblyInfo.cs
new file mode 100644
index 0000000..1765ae0
--- /dev/null
+++ b/OpenSim/Region/PhysicsModules/BasicPhysics/AssemblyInfo.cs
@@ -0,0 +1,62 @@
+/*
+ * 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.Reflection;
+using System.Runtime.InteropServices;
+using Mono.Addins;
+
+// Information about this assembly is defined by the following
+// attributes.
+//
+// change them to the information which is associated with the assembly
+// you compile.
+
+[assembly : AssemblyTitle("BasicPhysicsModule")]
+[assembly : AssemblyDescription("")]
+[assembly : AssemblyConfiguration("")]
+[assembly : AssemblyCompany("http://opensimulator.org")]
+[assembly : AssemblyProduct("BasicPhysicsModule")]
+[assembly : AssemblyCopyright("Copyright (c) OpenSimulator.org Developers")]
+[assembly : AssemblyTrademark("")]
+[assembly : AssemblyCulture("")]
+
+// This sets the default COM visibility of types in the assembly to invisible.
+// If you need to expose a type to COM, use [ComVisible(true)] on that type.
+
+[assembly : ComVisible(false)]
+
+// The assembly version has following format :
+//
+// Major.Minor.Build.Revision
+//
+// You can specify all values by your own or you can build default build and revision
+// 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/PhysicsModules/BasicPhysics/BasicPhysicsActor.cs b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsActor.cs
new file mode 100644
index 0000000..e7b30ba
--- /dev/null
+++ b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsActor.cs
@@ -0,0 +1,303 @@
+/*
+ * 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 OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.PhysicsModules.SharedBase;
+
+namespace OpenSim.Region.PhysicsModule.BasicPhysics
+{
+    public class BasicActor : PhysicsActor
+    {
+        public BasicActor(Vector3 size)
+        {
+            Size = size;
+        }
+
+        public override int PhysicsActorType
+        {
+            get { return (int) ActorTypes.Agent; }
+            set { return; }
+        }
+
+        public override Vector3 RotationalVelocity { get; set; }
+
+        public override bool SetAlwaysRun
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override uint LocalID
+        {
+            set { return; }
+        }
+
+        public override bool Grabbed
+        {
+            set { return; }
+        }
+
+        public override bool Selected
+        {
+            set { return; }
+        }
+
+        public override float Buoyancy
+        {
+            get { return 0f; }
+            set { return; }
+        }
+
+        public override bool FloatOnWater
+        {
+            set { return; }
+        }
+
+        public override bool IsPhysical
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override bool ThrottleUpdates
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override bool Flying { get; set; }
+
+        public override bool IsColliding { get; set; }
+
+        public override bool CollidingGround
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override bool CollidingObj
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override bool Stopped
+        {
+            get { return false; }
+        }
+
+        public override Vector3 Position { get; set; }
+
+        public override Vector3 Size { get; set; }
+
+        public override PrimitiveBaseShape Shape
+        {
+            set { return; }
+        }
+
+        public override float Mass
+        {
+            get { return 0f; }
+        }
+
+        public override Vector3 Force
+        {
+            get { return Vector3.Zero; }
+            set { return; }
+        }
+
+        public override int VehicleType
+        {
+            get { return 0; }
+            set { return; }
+        }
+
+        public override void VehicleFloatParam(int param, float value)
+        {
+
+        }
+
+        public override void VehicleVectorParam(int param, Vector3 value)
+        {
+
+        }
+
+        public override void VehicleRotationParam(int param, Quaternion rotation)
+        {
+
+        }
+
+        public override void VehicleFlags(int param, bool remove)
+        {
+
+        }
+
+        public override void SetVolumeDetect(int param)
+        {
+
+        }
+
+        public override Vector3 CenterOfMass
+        {
+            get { return Vector3.Zero; }
+        }
+
+        public override Vector3 GeometricCenter
+        {
+            get { return Vector3.Zero; }
+        }
+
+        public override Vector3 Velocity { get; set; }
+
+        public override Vector3 Torque
+        {
+            get { return Vector3.Zero; }
+            set { return; }
+        }
+
+        public override float CollisionScore
+        {
+            get { return 0f; }
+            set { }
+        }
+
+        public override Quaternion Orientation
+        {
+            get { return Quaternion.Identity; }
+            set { }
+        }
+
+        public override Vector3 Acceleration { get; set; }
+
+        public override bool Kinematic
+        {
+            get { return true; }
+            set { }
+        }
+
+        public override void link(PhysicsActor obj)
+        {
+        }
+
+        public override void delink()
+        {
+        }
+
+        public override void LockAngularMotion(Vector3 axis)
+        {
+        }
+
+        public override void AddForce(Vector3 force, bool pushforce)
+        {
+        }
+
+        public override void AddAngularForce(Vector3 force, bool pushforce)
+        {
+        }
+
+        public override void SetMomentum(Vector3 momentum)
+        {
+        }
+
+        public override void CrossingFailure()
+        {
+        }
+
+        public override Vector3 PIDTarget
+        {
+            set { return; }
+        }
+
+        public override bool PIDActive
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override float PIDTau
+        {
+            set { return; }
+        }
+
+        public override float PIDHoverHeight
+        {
+            set { return; }
+        }
+
+        public override bool PIDHoverActive
+        {
+            set { return; }
+        }
+
+        public override PIDHoverType PIDHoverType
+        {
+            set { return; }
+        }
+
+        public override float PIDHoverTau
+        {
+            set { return; }
+        }
+
+        public override Quaternion APIDTarget 
+        { 
+            set { return; }
+        }
+        
+        public override bool APIDActive
+        { 
+            set { return; }
+        }
+        
+        public override float APIDStrength
+        { 
+            set { return; }
+        }
+        
+        public override float APIDDamping
+        { 
+            set { return; }
+        }
+
+        public override void SubscribeEvents(int ms)
+        {
+        }
+
+        public override void UnSubscribeEvents()
+        {
+        }
+
+        public override bool SubscribedEvents()
+        {
+            return false;
+        }
+    }
+}
diff --git a/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsPrim.cs b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsPrim.cs
new file mode 100644
index 0000000..5383f1b
--- /dev/null
+++ b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsPrim.cs
@@ -0,0 +1,316 @@
+/*
+ * 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 OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.PhysicsModules.SharedBase;
+
+namespace OpenSim.Region.PhysicsModule.BasicPhysics
+{
+    public class BasicPhysicsPrim : PhysicsActor
+    {
+        private Vector3 _size;
+//        private PrimitiveBaseShape _shape;
+
+        public BasicPhysicsPrim(
+            string name, uint localId, Vector3 position, Vector3 size, Quaternion orientation, PrimitiveBaseShape shape)
+        {
+            Name = name;
+            LocalID = localId;
+            Position = position;
+            Size = size;
+            Orientation = orientation;
+            Shape = shape;
+        }
+
+        public override int PhysicsActorType
+        {
+            get { return (int) ActorTypes.Agent; }
+            set { return; }
+        }
+
+        public override Vector3 RotationalVelocity { get; set; }
+
+        public override bool SetAlwaysRun
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override uint LocalID
+        {
+            set { return; }
+        }
+
+        public override bool Grabbed
+        {
+            set { return; }
+        }
+
+        public override bool Selected
+        {
+            set { return; }
+        }
+
+        public override float Buoyancy
+        {
+            get { return 0f; }
+            set { return; }
+        }
+
+        public override bool FloatOnWater
+        {
+            set { return; }
+        }
+
+        public override bool IsPhysical
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override bool ThrottleUpdates
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override bool Flying { get; set; }
+
+        public override bool IsColliding { get; set; }
+
+        public override bool CollidingGround
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override bool CollidingObj
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override bool Stopped
+        {
+            get { return false; }
+        }
+
+        public override Vector3 Position { get; set; }
+
+        public override Vector3 Size
+        {
+            get { return _size; }
+            set {
+                  _size = value;
+                  _size.Z = _size.Z / 2.0f;
+                }
+        }
+
+        public override PrimitiveBaseShape Shape
+        {
+//            set { _shape = value; }
+            set {}
+        }
+
+        public override float Mass
+        {
+            get { return 0f; }
+        }
+
+        public override Vector3 Force
+        {
+            get { return Vector3.Zero; }
+            set { return; }
+        }
+
+        public override int VehicleType
+        {
+            get { return 0; }
+            set { return; }
+        }
+
+        public override void VehicleFloatParam(int param, float value)
+        {
+
+        }
+
+        public override void VehicleVectorParam(int param, Vector3 value)
+        {
+
+        }
+
+        public override void VehicleRotationParam(int param, Quaternion rotation)
+        {
+
+        }
+
+        public override void VehicleFlags(int param, bool remove)
+        {
+
+        }
+
+        public override void SetVolumeDetect(int param)
+        {
+
+        }
+
+        public override Vector3 CenterOfMass
+        {
+            get { return Vector3.Zero; }
+        }
+
+        public override Vector3 GeometricCenter
+        {
+            get { return Vector3.Zero; }
+        }
+
+        public override Vector3 Velocity { get; set; }
+
+        public override Vector3 Torque
+        {
+            get { return Vector3.Zero; }
+            set { return; }
+        }
+
+        public override float CollisionScore
+        {
+            get { return 0f; }
+            set { }
+        }
+
+        public override Quaternion Orientation { get; set; }
+
+        public override Vector3 Acceleration { get; set; }
+
+        public override bool Kinematic
+        {
+            get { return true; }
+            set { }
+        }
+
+        public override void link(PhysicsActor obj)
+        {
+        }
+
+        public override void delink()
+        {
+        }
+
+        public override void LockAngularMotion(Vector3 axis)
+        {
+        }
+
+        public override void AddForce(Vector3 force, bool pushforce)
+        {
+        }
+
+        public override void AddAngularForce(Vector3 force, bool pushforce)
+        {
+        }
+
+        public override void SetMomentum(Vector3 momentum)
+        {
+        }
+
+        public override void CrossingFailure()
+        {
+        }
+
+        public override Vector3 PIDTarget
+        {
+            set { return; }
+        }
+
+        public override bool PIDActive
+        {
+            get { return false; }
+            set { return; }
+        }
+
+        public override float PIDTau
+        {
+            set { return; }
+        }
+
+        public override float PIDHoverHeight
+        {
+            set { return; }
+        }
+
+        public override bool PIDHoverActive
+        {
+            set { return; }
+        }
+
+        public override PIDHoverType PIDHoverType
+        {
+            set { return; }
+        }
+
+        public override float PIDHoverTau
+        {
+            set { return; }
+        }
+
+        public override Quaternion APIDTarget 
+        { 
+            set { return; }
+        }
+        
+        public override bool APIDActive
+        { 
+            set { return; }
+        }
+        
+        public override float APIDStrength
+        { 
+            set { return; }
+        }
+        
+        public override float APIDDamping
+        { 
+            set { return; }
+        }
+
+        public override void SubscribeEvents(int ms)
+        {
+        }
+
+        public override void UnSubscribeEvents()
+        {
+        }
+
+        public override bool SubscribedEvents()
+        {
+            return false;
+        }
+    }
+}
diff --git a/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsScene.cs b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsScene.cs
new file mode 100644
index 0000000..ac2c1f3
--- /dev/null
+++ b/OpenSim/Region/PhysicsModules/BasicPhysics/BasicPhysicsScene.cs
@@ -0,0 +1,256 @@
+/*
+ * 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 Mono.Addins;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
+
+namespace OpenSim.Region.PhysicsModule.BasicPhysics
+{
+    /// <summary>
+    /// This is an incomplete extremely basic physics implementation
+    /// </summary>
+    /// <remarks>
+    /// Not useful for anything at the moment apart from some regression testing in other components where some form
+    /// of physics plugin is needed.
+    /// </remarks>
+    [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 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);
+            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,
+                                                  Vector3 size, Quaternion rotation, bool isPhysical, uint localid)
+        {
+            BasicPhysicsPrim prim = new BasicPhysicsPrim(primName, localid, position, size, rotation, pbs);
+            prim.IsPhysical = isPhysical;
+
+            _prims.Add(prim);
+
+            return prim;
+        }
+
+        public override PhysicsActor AddAvatar(string avName, Vector3 position, Vector3 velocity, Vector3 size, bool isFlying)
+        {
+            BasicActor act = new BasicActor(size);
+            act.Position = position;
+            act.Velocity = velocity;
+            act.Flying = isFlying;
+            _actors.Add(act);
+            return act;
+        }
+
+        public override void RemovePrim(PhysicsActor actor)
+        {
+            BasicPhysicsPrim prim = (BasicPhysicsPrim)actor;
+            if (_prims.Contains(prim))
+                _prims.Remove(prim);
+        }
+
+        public override void RemoveAvatar(PhysicsActor actor)
+        {
+            BasicActor act = (BasicActor)actor;
+            if (_actors.Contains(act))
+                _actors.Remove(act);
+        }
+
+        public override void AddPhysicsActorTaint(PhysicsActor prim)
+        {
+        }
+
+        public override float Simulate(float timeStep)
+        {
+//            Console.WriteLine("Simulating");
+
+            float fps = 0;
+            for (int i = 0; i < _actors.Count; ++i)
+            {
+                BasicActor actor = _actors[i];
+                Vector3 actorPosition = actor.Position;
+                Vector3 actorVelocity = actor.Velocity;
+
+                //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;
+
+                if (actor.Position.Y < 0)
+                {
+                    actorPosition.Y = 0.1F;
+                }
+                else if (actor.Position.Y >= m_regionExtent.Y)
+                {
+                    actorPosition.Y = (m_regionExtent.Y - 0.1f);
+                }
+
+                if (actor.Position.X < 0)
+                {
+                    actorPosition.X = 0.1F;
+                }
+                else if (actor.Position.X >= m_regionExtent.X)
+                {
+                    actorPosition.X = (m_regionExtent.X - 0.1f);
+                }
+
+                float terrainHeight = 0;
+                if (_heightMap != null)
+                    terrainHeight = _heightMap[(int)actor.Position.Y * (int)m_regionExtent.Y + (int)actor.Position.X];
+
+                float height = terrainHeight + actor.Size.Z;
+//                Console.WriteLine("height {0}, actorPosition {1}", height, actorPosition);
+
+                if (actor.Flying)
+                {
+                    if (actor.Position.Z + (actor.Velocity.Z * timeStep) < terrainHeight + 2)
+                    {
+                        actorPosition.Z = height;
+                        actorVelocity.Z = 0;
+                        actor.IsColliding = true;
+                    }
+                    else
+                    {
+                        actorPosition.Z += actor.Velocity.Z * timeStep;
+                        actor.IsColliding = false;
+                    }
+                }
+                else
+                {
+                    actorPosition.Z = height;
+                    actorVelocity.Z = 0;
+                    actor.IsColliding = true;
+                }
+
+                actor.Position = actorPosition;
+                actor.Velocity = actorVelocity;
+            }
+
+            return 1.0f;
+        }
+
+        public override void GetResults()
+        {
+        }
+
+        public override bool IsThreaded
+        {
+            get { return (false); // for now we won't be multithreaded
+            }
+        }
+
+        public override void SetTerrain(float[] heightMap)
+        {
+            _heightMap = heightMap;
+        }
+
+        public override void DeleteTerrain()
+        {
+        }
+
+        public override void SetWaterLevel(float baseheight)
+        {
+        }
+
+        public override Dictionary<uint, float> GetTopColliders()
+        {
+            Dictionary<uint, float> returncolliders = new Dictionary<uint, float>();
+            return returncolliders;
+        }
+
+    }
+}