BulletSim: rename BSBody and BSShape to PhysBody and PhysShape. Add skeleton of BSLinksetCompound.

9 files changed, 328 insertions, 176 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
index b9013ab..8c7061d 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
@@ -131,45 +131,45 @@ public sealed class BSCharacter : BSPhysObject
         DetailLog("{0},BSCharacter.Destroy", LocalID);
         PhysicsScene.TaintedObject("BSCharacter.destroy", delegate()
         {
-            PhysicsScene.Shapes.DereferenceBody(BSBody, true, null);
-            PhysicsScene.Shapes.DereferenceShape(BSShape, true, null);
+            PhysicsScene.Shapes.DereferenceBody(PhysBody, true, null);
+            PhysicsScene.Shapes.DereferenceShape(PhysShape, true, null);
         });
     }
 
     private void SetPhysicalProperties()
     {
-        BulletSimAPI.RemoveObjectFromWorld2(PhysicsScene.World.ptr, BSBody.ptr);
+        BulletSimAPI.RemoveObjectFromWorld2(PhysicsScene.World.ptr, PhysBody.ptr);
 
         ZeroMotion();
         ForcePosition = _position;
         // Set the velocity and compute the proper friction
         ForceVelocity = _velocity;
 
-        BulletSimAPI.SetRestitution2(BSBody.ptr, PhysicsScene.Params.avatarRestitution);
-        BulletSimAPI.SetMargin2(BSShape.ptr, PhysicsScene.Params.collisionMargin);
-        BulletSimAPI.SetLocalScaling2(BSShape.ptr, Scale);
-        BulletSimAPI.SetContactProcessingThreshold2(BSBody.ptr, PhysicsScene.Params.contactProcessingThreshold);
+        BulletSimAPI.SetRestitution2(PhysBody.ptr, PhysicsScene.Params.avatarRestitution);
+        BulletSimAPI.SetMargin2(PhysShape.ptr, PhysicsScene.Params.collisionMargin);
+        BulletSimAPI.SetLocalScaling2(PhysShape.ptr, Scale);
+        BulletSimAPI.SetContactProcessingThreshold2(PhysBody.ptr, PhysicsScene.Params.contactProcessingThreshold);
         if (PhysicsScene.Params.ccdMotionThreshold > 0f)
         {
-            BulletSimAPI.SetCcdMotionThreshold2(BSBody.ptr, PhysicsScene.Params.ccdMotionThreshold);
-            BulletSimAPI.SetCcdSweptSphereRadius2(BSBody.ptr, PhysicsScene.Params.ccdSweptSphereRadius);
+            BulletSimAPI.SetCcdMotionThreshold2(PhysBody.ptr, PhysicsScene.Params.ccdMotionThreshold);
+            BulletSimAPI.SetCcdSweptSphereRadius2(PhysBody.ptr, PhysicsScene.Params.ccdSweptSphereRadius);
         }
 
         UpdatePhysicalMassProperties(MassRaw);
 
         // Make so capsule does not fall over
-        BulletSimAPI.SetAngularFactorV2(BSBody.ptr, OMV.Vector3.Zero);
+        BulletSimAPI.SetAngularFactorV2(PhysBody.ptr, OMV.Vector3.Zero);
 
-        BulletSimAPI.AddToCollisionFlags2(BSBody.ptr, CollisionFlags.CF_CHARACTER_OBJECT);
+        BulletSimAPI.AddToCollisionFlags2(PhysBody.ptr, CollisionFlags.CF_CHARACTER_OBJECT);
 
-        BulletSimAPI.AddObjectToWorld2(PhysicsScene.World.ptr, BSBody.ptr);
+        BulletSimAPI.AddObjectToWorld2(PhysicsScene.World.ptr, PhysBody.ptr);
 
         // BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.ACTIVE_TAG);
-        BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.DISABLE_DEACTIVATION);
-        BulletSimAPI.UpdateSingleAabb2(PhysicsScene.World.ptr, BSBody.ptr);
+        BulletSimAPI.ForceActivationState2(PhysBody.ptr, ActivationState.DISABLE_DEACTIVATION);
+        BulletSimAPI.UpdateSingleAabb2(PhysicsScene.World.ptr, PhysBody.ptr);
 
         // Do this after the object has been added to the world
-        BulletSimAPI.SetCollisionFilterMask2(BSBody.ptr,
+        BulletSimAPI.SetCollisionFilterMask2(PhysBody.ptr,
                         (uint)CollisionFilterGroups.AvatarFilter,
                         (uint)CollisionFilterGroups.AvatarMask);
     }
@@ -199,7 +199,7 @@ public sealed class BSCharacter : BSPhysObject
 
             PhysicsScene.TaintedObject("BSCharacter.setSize", delegate()
             {
-                BulletSimAPI.SetLocalScaling2(BSShape.ptr, Scale);
+                BulletSimAPI.SetLocalScaling2(PhysShape.ptr, Scale);
                 UpdatePhysicalMassProperties(MassRaw);
             });
 
@@ -234,10 +234,10 @@ public sealed class BSCharacter : BSPhysObject
         _rotationalVelocity = OMV.Vector3.Zero;
 
         // Zero some other properties directly into the physics engine
-        BulletSimAPI.SetLinearVelocity2(BSBody.ptr, OMV.Vector3.Zero);
-        BulletSimAPI.SetAngularVelocity2(BSBody.ptr, OMV.Vector3.Zero);
-        BulletSimAPI.SetInterpolationVelocity2(BSBody.ptr, OMV.Vector3.Zero, OMV.Vector3.Zero);
-        BulletSimAPI.ClearForces2(BSBody.ptr);
+        BulletSimAPI.SetLinearVelocity2(PhysBody.ptr, OMV.Vector3.Zero);
+        BulletSimAPI.SetAngularVelocity2(PhysBody.ptr, OMV.Vector3.Zero);
+        BulletSimAPI.SetInterpolationVelocity2(PhysBody.ptr, OMV.Vector3.Zero, OMV.Vector3.Zero);
+        BulletSimAPI.ClearForces2(PhysBody.ptr);
     }
 
     public override void LockAngularMotion(OMV.Vector3 axis) { return; }
@@ -254,19 +254,19 @@ public sealed class BSCharacter : BSPhysObject
             PhysicsScene.TaintedObject("BSCharacter.setPosition", delegate()
             {
                 DetailLog("{0},BSCharacter.SetPosition,taint,pos={1},orient={2}", LocalID, _position, _orientation);
-                BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+                BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
             });
         }
     }
     public override OMV.Vector3 ForcePosition {
         get {
-            _position = BulletSimAPI.GetPosition2(BSBody.ptr);
+            _position = BulletSimAPI.GetPosition2(PhysBody.ptr);
             return _position;
         }
         set {
             _position = value;
             PositionSanityCheck();
-            BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+            BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
         }
     }
 
@@ -313,7 +313,7 @@ public sealed class BSCharacter : BSPhysObject
             BSScene.TaintCallback sanityOperation = delegate()
             {
                 DetailLog("{0},BSCharacter.PositionSanityCheck,taint,pos={1},orient={2}", LocalID, _position, _orientation);
-                BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+                BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
             };
             if (inTaintTime)
                 sanityOperation();
@@ -332,8 +332,8 @@ public sealed class BSCharacter : BSPhysObject
     }
     public override void UpdatePhysicalMassProperties(float physMass)
     {
-        OMV.Vector3 localInertia = BulletSimAPI.CalculateLocalInertia2(BSShape.ptr, physMass);
-        BulletSimAPI.SetMassProps2(BSBody.ptr, physMass, localInertia);
+        OMV.Vector3 localInertia = BulletSimAPI.CalculateLocalInertia2(PhysShape.ptr, physMass);
+        BulletSimAPI.SetMassProps2(PhysBody.ptr, physMass, localInertia);
     }
 
     public override OMV.Vector3 Force {
@@ -344,7 +344,7 @@ public sealed class BSCharacter : BSPhysObject
             PhysicsScene.TaintedObject("BSCharacter.SetForce", delegate()
             {
                 DetailLog("{0},BSCharacter.setForce,taint,force={1}", LocalID, _force);
-                BulletSimAPI.SetObjectForce2(BSBody.ptr, _force);
+                BulletSimAPI.SetObjectForce2(PhysBody.ptr, _force);
             });
         }
     }
@@ -383,7 +383,7 @@ public sealed class BSCharacter : BSPhysObject
                 if (_currentFriction != PhysicsScene.Params.avatarStandingFriction)
                 {
                     _currentFriction = PhysicsScene.Params.avatarStandingFriction;
-                    BulletSimAPI.SetFriction2(BSBody.ptr, _currentFriction);
+                    BulletSimAPI.SetFriction2(PhysBody.ptr, _currentFriction);
                 }
             }
             else
@@ -391,15 +391,15 @@ public sealed class BSCharacter : BSPhysObject
                 if (_currentFriction != PhysicsScene.Params.avatarFriction)
                 {
                     _currentFriction = PhysicsScene.Params.avatarFriction;
-                    BulletSimAPI.SetFriction2(BSBody.ptr, _currentFriction);
+                    BulletSimAPI.SetFriction2(PhysBody.ptr, _currentFriction);
                 }
             }
             _velocity = value;
             // Remember the set velocity so we can suppress the reduction by friction, ...
             _appliedVelocity = value;
 
-            BulletSimAPI.SetLinearVelocity2(BSBody.ptr, _velocity);
-            BulletSimAPI.Activate2(BSBody.ptr, true);
+            BulletSimAPI.SetLinearVelocity2(PhysBody.ptr, _velocity);
+            BulletSimAPI.Activate2(PhysBody.ptr, true);
         }
     }
     public override OMV.Vector3 Torque {
@@ -424,7 +424,7 @@ public sealed class BSCharacter : BSPhysObject
             PhysicsScene.TaintedObject("BSCharacter.setOrientation", delegate()
             {
                 // _position = BulletSimAPI.GetPosition2(BSBody.ptr);
-                BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+                BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
             });
         }
     }
@@ -433,13 +433,13 @@ public sealed class BSCharacter : BSPhysObject
     {
         get
         {
-            _orientation = BulletSimAPI.GetOrientation2(BSBody.ptr);
+            _orientation = BulletSimAPI.GetOrientation2(PhysBody.ptr);
             return _orientation;
         }
         set
         {
             _orientation = value;
-            BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+            BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
         }
     }
     public override int PhysicsActorType {
@@ -498,9 +498,9 @@ public sealed class BSCharacter : BSPhysObject
             PhysicsScene.TaintedObject("BSCharacter.setFloatOnWater", delegate()
             {
                 if (_floatOnWater)
-                    CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(BSBody.ptr, CollisionFlags.BS_FLOATS_ON_WATER);
+                    CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(PhysBody.ptr, CollisionFlags.BS_FLOATS_ON_WATER);
                 else
-                    CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(BSBody.ptr, CollisionFlags.BS_FLOATS_ON_WATER);
+                    CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(PhysBody.ptr, CollisionFlags.BS_FLOATS_ON_WATER);
             });
         }
     }
@@ -533,7 +533,7 @@ public sealed class BSCharacter : BSPhysObject
             DetailLog("{0},BSCharacter.setForceBuoyancy,taint,buoy={1}", LocalID, _buoyancy);
             // Buoyancy is faked by changing the gravity applied to the object
             float grav = PhysicsScene.Params.gravity * (1f - _buoyancy);
-            BulletSimAPI.SetGravity2(BSBody.ptr, new OMV.Vector3(0f, 0f, grav));
+            BulletSimAPI.SetGravity2(PhysBody.ptr, new OMV.Vector3(0f, 0f, grav));
         }
     }
 
@@ -579,7 +579,7 @@ public sealed class BSCharacter : BSPhysObject
             PhysicsScene.TaintedObject("BSCharacter.AddForce", delegate()
             {
                 DetailLog("{0},BSCharacter.setAddForce,taint,addedForce={1}", LocalID, _force);
-                BulletSimAPI.SetObjectForce2(BSBody.ptr, _force);
+                BulletSimAPI.SetObjectForce2(PhysBody.ptr, _force);
             });
         }
         else
@@ -647,7 +647,7 @@ public sealed class BSCharacter : BSPhysObject
             // That's just the way they are defined.
             OMV.Vector3 avVel = new OMV.Vector3(_appliedVelocity.X, _appliedVelocity.Y, entprop.Velocity.Z);
             _velocity = avVel;
-            BulletSimAPI.SetLinearVelocity2(BSBody.ptr, avVel);
+            BulletSimAPI.SetLinearVelocity2(PhysBody.ptr, avVel);
         }
 
         // Tell the linkset about value changes
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
index 5c61774..38609e3 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
@@ -514,8 +514,8 @@ namespace OpenSim.Region.Physics.BulletSPlugin
             if (IsActive)
             {
                 // Friction effects are handled by this vehicle code
-                BulletSimAPI.SetFriction2(Prim.BSBody.ptr, 0f);
-                BulletSimAPI.SetHitFraction2(Prim.BSBody.ptr, 0f);
+                BulletSimAPI.SetFriction2(Prim.PhysBody.ptr, 0f);
+                BulletSimAPI.SetHitFraction2(Prim.PhysBody.ptr, 0f);
             }
         }
 
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs b/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs
index 6d84fcc..525ec28 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSLinkset.cs
@@ -194,13 +194,6 @@ public abstract class BSLinkset
     // Called while LinkActivity is locked.
     protected abstract void AddChildToLinkset(BSPhysObject child);
 
-    // Forcefully removing a child from a linkset.
-    // This is not being called by the child so we have to make sure the child doesn't think
-    //    it's still connected to the linkset.
-    // Normal OpenSimulator operation will never do this because other SceneObjectPart information
-    //    also has to be updated (like pointer to prim's parent).
-    protected abstract void RemoveChildFromOtherLinkset(BSPhysObject pchild);
-
     // I am the root of a linkset and one of my children is being removed.
     // Safe to call even if the child is not really in my linkset.
     protected abstract void RemoveChildFromLinkset(BSPhysObject child);
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs
new file mode 100755
index 0000000..1c569b5
--- /dev/null
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs
@@ -0,0 +1,173 @@
+/*

+ * Copyright (c) Contributors, http://opensimulator.org/

+ * See CONTRIBUTORS.TXT for a full list of copyright holders.

+ *

+ * Redistribution and use in source and binary forms, with or without

+ * modification, are permitted provided that the following conditions are met:

+ *     * Redistributions of source code must retain the above copyright

+ *       notice, this list of conditions and the following disclaimer.

+ *     * Redistributions in binary form must reproduce the above copyrightD

+ *       notice, this list of conditions and the following disclaimer in the

+ *       documentation and/or other materials provided with the distribution.

+ *     * Neither the name of the OpenSimulator Project nor the

+ *       names of its contributors may be used to endorse or promote products

+ *       derived from this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY

+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY

+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ */

+using System;

+using System.Collections.Generic;

+using System.Text;

+

+using OMV = OpenMetaverse;

+

+namespace OpenSim.Region.Physics.BulletSPlugin

+{

+public sealed class BSLinksetCompound : BSLinkset

+{

+    // private static string LogHeader = "[BULLETSIM LINKSET CONSTRAINTS]";

+

+    public BSLinksetCompound(BSScene scene, BSPhysObject parent)

+    {

+        base.Initialize(scene, parent);

+    }

+

+    // When physical properties are changed the linkset needs to recalculate

+    //   its internal properties.

+    // This is queued in the 'post taint' queue so the

+    //   refresh will happen once after all the other taints are applied.

+    public override void Refresh(BSPhysObject requestor)

+    {

+        // Queue to happen after all the other taint processing

+        PhysicsScene.PostTaintObject("BSLinksetcompound.Refresh", requestor.LocalID, delegate()

+            {

+                if (HasAnyChildren && IsRoot(requestor))

+                    RecomputeLinksetCompound();

+            });

+    }

+

+    // The object is going dynamic (physical). Do any setup necessary

+    //     for a dynamic linkset.

+    // Only the state of the passed object can be modified. The rest of the linkset

+    //     has not yet been fully constructed.

+    // Return 'true' if any properties updated on the passed object.

+    // Called at taint-time!

+    public override bool MakeDynamic(BSPhysObject child)

+    {

+        // What is done for each object in BSPrim is what we want.

+        return false;

+    }

+

+    // The object is going static (non-physical). Do any setup necessary for a static linkset.

+    // Return 'true' if any properties updated on the passed object.

+    // This doesn't normally happen -- OpenSim removes the objects from the physical

+    //     world if it is a static linkset.

+    // Called at taint-time!

+    public override bool MakeStatic(BSPhysObject child)

+    {

+        // What is done for each object in BSPrim is what we want.

+        return false;

+    }

+

+    // Called at taint-time!!

+    public override void UpdateProperties(BSPhysObject updated)

+    {

+        // Nothing to do for constraints on property updates

+    }

+

+    // Routine called when rebuilding the body of some member of the linkset.

+    // Destroy all the constraints have have been made to root and set

+    //     up to rebuild the constraints before the next simulation step.

+    // Returns 'true' of something was actually removed and would need restoring

+    // Called at taint-time!!

+    public override bool RemoveBodyDependencies(BSPrim child)

+    {

+        bool ret = false;

+

+        DetailLog("{0},BSLinksetcompound.RemoveBodyDependencies,removeChildrenForRoot,rID={1},rBody={2}",

+                                    child.LocalID, LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"));

+

+        // Cause the current shape to be freed and the new one to be built.

+        Refresh(LinksetRoot);

+

+        return ret;

+    }

+

+    // Companion to RemoveBodyDependencies(). If RemoveBodyDependencies() returns 'true',

+    // this routine will restore the removed constraints.

+    // Called at taint-time!!

+    public override void RestoreBodyDependencies(BSPrim child)

+    {

+        // The Refresh operation queued by RemoveBodyDependencies() will build any missing constraints.

+    }

+

+    // ================================================================

+

+    // Add a new child to the linkset.

+    // Called while LinkActivity is locked.

+    protected override void AddChildToLinkset(BSPhysObject child)

+    {

+        if (!HasChild(child))

+        {

+            m_children.Add(child);

+

+            DetailLog("{0},BSLinksetCompound.AddChildToLinkset,call,child={1}", LinksetRoot.LocalID, child.LocalID);

+

+            // Cause constraints and assorted properties to be recomputed before the next simulation step.

+            Refresh(LinksetRoot);

+        }

+        return;

+    }

+

+    // Remove the specified child from the linkset.

+    // Safe to call even if the child is not really in my linkset.

+    protected override void RemoveChildFromLinkset(BSPhysObject child)

+    {

+        if (m_children.Remove(child))

+        {

+            DetailLog("{0},BSLinksetCompound.RemoveChildFromLinkset,call,rID={1},rBody={2},cID={3},cBody={4}",

+                            child.LocalID,

+                            LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"),

+                            child.LocalID, child.PhysBody.ptr.ToString("X"));

+

+            // See that the linkset parameters are recomputed at the end of the taint time.

+            Refresh(LinksetRoot);

+        }

+        else

+        {

+            // Non-fatal occurance.

+            // PhysicsScene.Logger.ErrorFormat("{0}: Asked to remove child from linkset that was not in linkset", LogHeader);

+        }

+        return;

+    }

+

+

+    // Call each of the constraints that make up this linkset and recompute the

+    //    various transforms and variables. Create constraints of not created yet.

+    // Called before the simulation step to make sure the constraint based linkset

+    //    is all initialized.

+    // Called at taint time!!

+    private void RecomputeLinksetCompound()

+    {

+        float linksetMass = LinksetMass;

+        LinksetRoot.UpdatePhysicalMassProperties(linksetMass);

+

+            // DEBUG: see of inter-linkset collisions are causing problems

+        // BulletSimAPI.SetCollisionFilterMask2(LinksetRoot.BSBody.ptr, 

+        //                     (uint)CollisionFilterGroups.LinksetFilter, (uint)CollisionFilterGroups.LinksetMask);

+        DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,set,rBody={1},linksetMass={2}",

+                            LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), linksetMass);

+

+

+    }

+}

+}
\ No newline at end of file
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs
index 8cdbd9b..65aed77 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs
@@ -94,7 +94,7 @@ public sealed class BSLinksetConstraints : BSLinkset
         bool ret = false;
 
         DetailLog("{0},BSLinksetConstraint.RemoveBodyDependencies,removeChildrenForRoot,rID={1},rBody={2}",
-                                    child.LocalID, LinksetRoot.LocalID, LinksetRoot.BSBody.ptr.ToString("X"));
+                                    child.LocalID, LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"));
 
         lock (m_linksetActivityLock)
         {
@@ -124,9 +124,6 @@ public sealed class BSLinksetConstraints : BSLinkset
         {
             m_children.Add(child);
 
-            BSPhysObject rootx = LinksetRoot; // capture the root as of now
-            BSPhysObject childx = child;
-
             DetailLog("{0},BSLinksetConstraints.AddChildToLinkset,call,child={1}", LinksetRoot.LocalID, child.LocalID);
 
             // Cause constraints and assorted properties to be recomputed before the next simulation step.
@@ -135,17 +132,6 @@ public sealed class BSLinksetConstraints : BSLinkset
         return;
     }
 
-    // Forcefully removing a child from a linkset.
-    // This is not being called by the child so we have to make sure the child doesn't think
-    //    it's still connected to the linkset.
-    // Normal OpenSimulator operation will never do this because other SceneObjectPart information
-    //    also has to be updated (like pointer to prim's parent).
-    protected override void RemoveChildFromOtherLinkset(BSPhysObject pchild)
-    {
-        pchild.Linkset = BSLinkset.Factory(PhysicsScene, pchild);
-        RemoveChildFromLinkset(pchild);
-    }
-
     // Remove the specified child from the linkset.
     // Safe to call even if the child is not really in my linkset.
     protected override void RemoveChildFromLinkset(BSPhysObject child)
@@ -157,8 +143,8 @@ public sealed class BSLinksetConstraints : BSLinkset
 
             DetailLog("{0},BSLinksetConstraints.RemoveChildFromLinkset,call,rID={1},rBody={2},cID={3},cBody={4}",
                             childx.LocalID,
-                            rootx.LocalID, rootx.BSBody.ptr.ToString("X"),
-                            childx.LocalID, childx.BSBody.ptr.ToString("X"));
+                            rootx.LocalID, rootx.PhysBody.ptr.ToString("X"),
+                            childx.LocalID, childx.PhysBody.ptr.ToString("X"));
 
             PhysicsScene.TaintedObject("BSLinksetConstraints.RemoveChildFromLinkset", delegate()
             {
@@ -197,15 +183,15 @@ public sealed class BSLinksetConstraints : BSLinkset
 
         DetailLog("{0},BSLinksetConstraint.BuildConstraint,taint,root={1},rBody={2},child={3},cBody={4},rLoc={5},cLoc={6},midLoc={7}",
                                         rootPrim.LocalID,
-                                        rootPrim.LocalID, rootPrim.BSBody.ptr.ToString("X"),
-                                        childPrim.LocalID, childPrim.BSBody.ptr.ToString("X"),
+                                        rootPrim.LocalID, rootPrim.PhysBody.ptr.ToString("X"),
+                                        childPrim.LocalID, childPrim.PhysBody.ptr.ToString("X"),
                                         rootPrim.Position, childPrim.Position, midPoint);
 
         // create a constraint that allows no freedom of movement between the two objects
         // http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=4818
 
         BSConstraint6Dof constrain = new BSConstraint6Dof(
-                            PhysicsScene.World, rootPrim.BSBody, childPrim.BSBody, midPoint, true, true );
+                            PhysicsScene.World, rootPrim.PhysBody, childPrim.PhysBody, midPoint, true, true );
                             // PhysicsScene.World, childPrim.BSBody, rootPrim.BSBody, midPoint, true, true );
 
         /* NOTE: below is an attempt to build constraint with full frame computation, etc.
@@ -262,14 +248,14 @@ public sealed class BSLinksetConstraints : BSLinkset
         bool ret = false;
         DetailLog("{0},BSLinksetConstraint.PhysicallyUnlinkAChildFromRoot,taint,root={1},rBody={2},child={3},cBody={4}",
                             rootPrim.LocalID,
-                            rootPrim.LocalID, rootPrim.BSBody.ptr.ToString("X"),
-                            childPrim.LocalID, childPrim.BSBody.ptr.ToString("X"));
+                            rootPrim.LocalID, rootPrim.PhysBody.ptr.ToString("X"),
+                            childPrim.LocalID, childPrim.PhysBody.ptr.ToString("X"));
 
         // Find the constraint for this link and get rid of it from the overall collection and from my list
-        if (PhysicsScene.Constraints.RemoveAndDestroyConstraint(rootPrim.BSBody, childPrim.BSBody))
+        if (PhysicsScene.Constraints.RemoveAndDestroyConstraint(rootPrim.PhysBody, childPrim.PhysBody))
         {
             // Make the child refresh its location
-            BulletSimAPI.PushUpdate2(childPrim.BSBody.ptr);
+            BulletSimAPI.PushUpdate2(childPrim.PhysBody.ptr);
             ret = true;
         }
 
@@ -283,7 +269,7 @@ public sealed class BSLinksetConstraints : BSLinkset
     {
         DetailLog("{0},BSLinksetConstraint.PhysicallyUnlinkAllChildren,taint", rootPrim.LocalID);
 
-        return PhysicsScene.Constraints.RemoveAndDestroyConstraint(rootPrim.BSBody);
+        return PhysicsScene.Constraints.RemoveAndDestroyConstraint(rootPrim.PhysBody);
     }
 
     // Call each of the constraints that make up this linkset and recompute the
@@ -300,7 +286,7 @@ public sealed class BSLinksetConstraints : BSLinkset
         // BulletSimAPI.SetCollisionFilterMask2(LinksetRoot.BSBody.ptr, 
         //                     (uint)CollisionFilterGroups.LinksetFilter, (uint)CollisionFilterGroups.LinksetMask);
         DetailLog("{0},BSLinksetConstraint.RecomputeLinksetConstraints,set,rBody={1},linksetMass={2}",
-                            LinksetRoot.LocalID, LinksetRoot.BSBody.ptr.ToString("X"), linksetMass);
+                            LinksetRoot.LocalID, LinksetRoot.PhysBody.ptr.ToString("X"), linksetMass);
 
         foreach (BSPhysObject child in m_children)
         {
@@ -310,7 +296,7 @@ public sealed class BSLinksetConstraints : BSLinkset
             child.UpdatePhysicalMassProperties(linksetMass);
 
             BSConstraint constrain;
-            if (!PhysicsScene.Constraints.TryGetConstraint(LinksetRoot.BSBody, child.BSBody, out constrain))
+            if (!PhysicsScene.Constraints.TryGetConstraint(LinksetRoot.PhysBody, child.PhysBody, out constrain))
             {
                 // If constraint doesn't exist yet, create it.
                 constrain = BuildConstraint(LinksetRoot, child);
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
index be8d64b..6220b21 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
@@ -68,9 +68,9 @@ public abstract class BSPhysObject : PhysicsActor
     public abstract void UpdatePhysicalMassProperties(float mass);
 
     // Reference to the physical body (btCollisionObject) of this object
-    public BulletBody BSBody;
+    public BulletBody PhysBody;
     // Reference to the physical shape (btCollisionShape) of this object
-    public BulletShape BSShape;
+    public BulletShape PhysShape;
 
     // 'true' if the mesh's underlying asset failed to build.
     // This will keep us from looping after the first time the build failed.
@@ -206,7 +206,7 @@ public abstract class BSPhysObject : PhysicsActor
 
             PhysicsScene.TaintedObject(TypeName+".SubscribeEvents", delegate()
             {
-                CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(BSBody.ptr, CollisionFlags.BS_SUBSCRIBE_COLLISION_EVENTS);
+                CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(PhysBody.ptr, CollisionFlags.BS_SUBSCRIBE_COLLISION_EVENTS);
             });
         }
         else
@@ -220,7 +220,7 @@ public abstract class BSPhysObject : PhysicsActor
         SubscribedEventsMs = 0;
         PhysicsScene.TaintedObject(TypeName+".UnSubscribeEvents", delegate()
         {
-            CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(BSBody.ptr, CollisionFlags.BS_SUBSCRIBE_COLLISION_EVENTS);
+            CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(PhysBody.ptr, CollisionFlags.BS_SUBSCRIBE_COLLISION_EVENTS);
         });
     }
     // Return 'true' if the simulator wants collision events
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
index 9ced61fa..8dd48ca 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
@@ -111,8 +111,8 @@ public sealed class BSPrim : BSPhysObject
         _mass = CalculateMass();
 
         // No body or shape yet
-        BSBody = new BulletBody(LocalID, IntPtr.Zero);
-        BSShape = new BulletShape(IntPtr.Zero);
+        PhysBody = new BulletBody(LocalID, IntPtr.Zero);
+        PhysShape = new BulletShape(IntPtr.Zero);
 
         DetailLog("{0},BSPrim.constructor,call", LocalID);
         // do the actual object creation at taint time
@@ -120,7 +120,7 @@ public sealed class BSPrim : BSPhysObject
         {
             CreateGeomAndObject(true);
 
-            CurrentCollisionFlags = BulletSimAPI.GetCollisionFlags2(BSBody.ptr);
+            CurrentCollisionFlags = BulletSimAPI.GetCollisionFlags2(PhysBody.ptr);
         });
     }
 
@@ -145,8 +145,8 @@ public sealed class BSPrim : BSPhysObject
         {
             DetailLog("{0},BSPrim.Destroy,taint,", LocalID);
             // If there are physical body and shape, release my use of same.
-            PhysicsScene.Shapes.DereferenceBody(BSBody, true, null);
-            PhysicsScene.Shapes.DereferenceShape(BSShape, true, null);
+            PhysicsScene.Shapes.DereferenceBody(PhysBody, true, null);
+            PhysicsScene.Shapes.DereferenceShape(PhysShape, true, null);
         });
     }
 
@@ -243,7 +243,7 @@ public sealed class BSPrim : BSPhysObject
         _rotationalVelocity = OMV.Vector3.Zero;
 
         // Zero some other properties in the physics engine
-        BulletSimAPI.ClearAllForces2(BSBody.ptr);
+        BulletSimAPI.ClearAllForces2(PhysBody.ptr);
     }
 
     public override void LockAngularMotion(OMV.Vector3 axis)
@@ -256,7 +256,7 @@ public sealed class BSPrim : BSPhysObject
         get {
             if (!Linkset.IsRoot(this))
                 // child prims move around based on their parent. Need to get the latest location
-                _position = BulletSimAPI.GetPosition2(BSBody.ptr);
+                _position = BulletSimAPI.GetPosition2(PhysBody.ptr);
 
             // don't do the GetObjectPosition for root elements because this function is called a zillion times
             // _position = BulletSimAPI.GetObjectPosition2(PhysicsScene.World.ptr, BSBody.ptr);
@@ -274,20 +274,20 @@ public sealed class BSPrim : BSPhysObject
             PhysicsScene.TaintedObject("BSPrim.setPosition", delegate()
             {
                 // DetailLog("{0},BSPrim.SetPosition,taint,pos={1},orient={2}", LocalID, _position, _orientation);
-                BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+                BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
                 ActivateIfPhysical(false);
             });
         }
     }
     public override OMV.Vector3 ForcePosition {
         get {
-            _position = BulletSimAPI.GetPosition2(BSBody.ptr);
+            _position = BulletSimAPI.GetPosition2(PhysBody.ptr);
             return _position;
         }
         set {
             _position = value;
             PositionSanityCheck();
-            BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+            BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
             ActivateIfPhysical(false);
         }
     }
@@ -371,15 +371,15 @@ public sealed class BSPrim : BSPhysObject
     {
         if (IsStatic)
         {
-            BulletSimAPI.SetMassProps2(BSBody.ptr, 0f, OMV.Vector3.Zero);
-            BulletSimAPI.UpdateInertiaTensor2(BSBody.ptr);
+            BulletSimAPI.SetMassProps2(PhysBody.ptr, 0f, OMV.Vector3.Zero);
+            BulletSimAPI.UpdateInertiaTensor2(PhysBody.ptr);
         }
         else
         {
-            OMV.Vector3 localInertia = BulletSimAPI.CalculateLocalInertia2(BSShape.ptr, physMass);
-            BulletSimAPI.SetMassProps2(BSBody.ptr, physMass, localInertia);
+            OMV.Vector3 localInertia = BulletSimAPI.CalculateLocalInertia2(PhysShape.ptr, physMass);
+            BulletSimAPI.SetMassProps2(PhysBody.ptr, physMass, localInertia);
             // center of mass is at the zero of the object
-            BulletSimAPI.SetCenterOfMassByPosRot2(BSBody.ptr, ForcePosition, ForceOrientation);
+            BulletSimAPI.SetCenterOfMassByPosRot2(PhysBody.ptr, ForcePosition, ForceOrientation);
             // BulletSimAPI.UpdateInertiaTensor2(BSBody.ptr);
             DetailLog("{0},BSPrim.UpdateMassProperties,mass={1},localInertia={2}", LocalID, physMass, localInertia);
         }
@@ -404,7 +404,7 @@ public sealed class BSPrim : BSPhysObject
             PhysicsScene.TaintedObject("BSPrim.setForce", delegate()
             {
                 // DetailLog("{0},BSPrim.setForce,taint,force={1}", LocalID, _force);
-                BulletSimAPI.SetObjectForce2(BSBody.ptr, _force);
+                BulletSimAPI.SetObjectForce2(PhysBody.ptr, _force);
             });
         }
     }
@@ -498,7 +498,7 @@ public sealed class BSPrim : BSPhysObject
             PhysicsScene.TaintedObject("BSPrim.setVelocity", delegate()
             {
                 // DetailLog("{0},BSPrim.SetVelocity,taint,vel={1}", LocalID, _velocity);
-                BulletSimAPI.SetLinearVelocity2(BSBody.ptr, _velocity);
+                BulletSimAPI.SetLinearVelocity2(PhysBody.ptr, _velocity);
             });
         }
     }
@@ -506,7 +506,7 @@ public sealed class BSPrim : BSPhysObject
         get { return _velocity; }
         set {
             _velocity = value;
-            BulletSimAPI.SetLinearVelocity2(BSBody.ptr, _velocity);
+            BulletSimAPI.SetLinearVelocity2(PhysBody.ptr, _velocity);
         }
     }
     public override OMV.Vector3 Torque {
@@ -531,7 +531,7 @@ public sealed class BSPrim : BSPhysObject
             if (!Linkset.IsRoot(this))
             {
                 // Children move around because tied to parent. Get a fresh value.
-                _orientation = BulletSimAPI.GetOrientation2(BSBody.ptr);
+                _orientation = BulletSimAPI.GetOrientation2(PhysBody.ptr);
             }
             return _orientation;
         }
@@ -544,7 +544,7 @@ public sealed class BSPrim : BSPhysObject
             {
                 // _position = BulletSimAPI.GetObjectPosition2(PhysicsScene.World.ptr, BSBody.ptr);
                 // DetailLog("{0},BSPrim.setOrientation,taint,pos={1},orient={2}", LocalID, _position, _orientation);
-                BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+                BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
             });
         }
     }
@@ -553,13 +553,13 @@ public sealed class BSPrim : BSPhysObject
     {
         get
         {
-            _orientation = BulletSimAPI.GetOrientation2(BSBody.ptr);
+            _orientation = BulletSimAPI.GetOrientation2(PhysBody.ptr);
             return _orientation;
         }
         set
         {
             _orientation = value;
-            BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+            BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
         }
     }
     public override int PhysicsActorType {
@@ -615,7 +615,7 @@ public sealed class BSPrim : BSPhysObject
 
         // Mangling all the physical properties requires the object not be in the physical world.
         // This is a NOOP if the object is not in the world (BulletSim and Bullet ignore objects not found).
-        BulletSimAPI.RemoveObjectFromWorld2(PhysicsScene.World.ptr, BSBody.ptr);
+        BulletSimAPI.RemoveObjectFromWorld2(PhysicsScene.World.ptr, PhysBody.ptr);
 
         // Set up the object physicalness (does gravity and collisions move this object)
         MakeDynamic(IsStatic);
@@ -629,15 +629,15 @@ public sealed class BSPrim : BSPhysObject
         // Make solid or not (do things bounce off or pass through this object).
         MakeSolid(IsSolid);
 
-        BulletSimAPI.AddObjectToWorld2(PhysicsScene.World.ptr, BSBody.ptr);
+        BulletSimAPI.AddObjectToWorld2(PhysicsScene.World.ptr, PhysBody.ptr);
 
         // Rebuild its shape
-        BulletSimAPI.UpdateSingleAabb2(PhysicsScene.World.ptr, BSBody.ptr);
+        BulletSimAPI.UpdateSingleAabb2(PhysicsScene.World.ptr, PhysBody.ptr);
 
         // Collision filter can be set only when the object is in the world
-        if (BSBody.collisionFilter != 0 || BSBody.collisionMask != 0)
+        if (PhysBody.collisionFilter != 0 || PhysBody.collisionMask != 0)
         {
-            BulletSimAPI.SetCollisionFilterMask2(BSBody.ptr, (uint)BSBody.collisionFilter, (uint)BSBody.collisionMask);
+            BulletSimAPI.SetCollisionFilterMask2(PhysBody.ptr, (uint)PhysBody.collisionFilter, (uint)PhysBody.collisionMask);
         }
 
         // Recompute any linkset parameters.
@@ -646,7 +646,7 @@ public sealed class BSPrim : BSPhysObject
         Linkset.Refresh(this);
 
         DetailLog("{0},BSPrim.UpdatePhysicalParameters,taintExit,static={1},solid={2},mass={3},collide={4},cf={5:X},body={6},shape={7}",
-                        LocalID, IsStatic, IsSolid, _mass, SubscribedEvents(), CurrentCollisionFlags, BSBody, BSShape);
+                        LocalID, IsStatic, IsSolid, _mass, SubscribedEvents(), CurrentCollisionFlags, PhysBody, PhysShape);
     }
 
     // "Making dynamic" means changing to and from static.
@@ -659,44 +659,44 @@ public sealed class BSPrim : BSPhysObject
         if (makeStatic)
         {
             // Become a Bullet 'static' object type
-            CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(BSBody.ptr, CollisionFlags.CF_STATIC_OBJECT);
+            CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(PhysBody.ptr, CollisionFlags.CF_STATIC_OBJECT);
             // Stop all movement
             ZeroMotion();
             // Center of mass is at the center of the object
-            BulletSimAPI.SetCenterOfMassByPosRot2(Linkset.LinksetRoot.BSBody.ptr, _position, _orientation);
+            BulletSimAPI.SetCenterOfMassByPosRot2(Linkset.LinksetRoot.PhysBody.ptr, _position, _orientation);
             // Mass is zero which disables a bunch of physics stuff in Bullet
             UpdatePhysicalMassProperties(0f);
             // Set collision detection parameters
             if (PhysicsScene.Params.ccdMotionThreshold > 0f)
             {
-                BulletSimAPI.SetCcdMotionThreshold2(BSBody.ptr, PhysicsScene.Params.ccdMotionThreshold);
-                BulletSimAPI.SetCcdSweptSphereRadius2(BSBody.ptr, PhysicsScene.Params.ccdSweptSphereRadius);
+                BulletSimAPI.SetCcdMotionThreshold2(PhysBody.ptr, PhysicsScene.Params.ccdMotionThreshold);
+                BulletSimAPI.SetCcdSweptSphereRadius2(PhysBody.ptr, PhysicsScene.Params.ccdSweptSphereRadius);
             }
             // There can be special things needed for implementing linksets
             Linkset.MakeStatic(this);
             // The activation state is 'disabled' so Bullet will not try to act on it.
-            BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.DISABLE_SIMULATION);
+            BulletSimAPI.ForceActivationState2(PhysBody.ptr, ActivationState.DISABLE_SIMULATION);
             // Start it out sleeping and physical actions could wake it up.
             // BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.ISLAND_SLEEPING);
 
-            BSBody.collisionFilter = CollisionFilterGroups.StaticObjectFilter;
-            BSBody.collisionMask = CollisionFilterGroups.StaticObjectMask;
+            PhysBody.collisionFilter = CollisionFilterGroups.StaticObjectFilter;
+            PhysBody.collisionMask = CollisionFilterGroups.StaticObjectMask;
         }
         else
         {
             // Not a Bullet static object
-            CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(BSBody.ptr, CollisionFlags.CF_STATIC_OBJECT);
+            CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(PhysBody.ptr, CollisionFlags.CF_STATIC_OBJECT);
 
             // Set various physical properties so internal dynamic properties will get computed correctly as they are set
-            BulletSimAPI.SetFriction2(BSBody.ptr, PhysicsScene.Params.defaultFriction);
-            BulletSimAPI.SetRestitution2(BSBody.ptr, PhysicsScene.Params.defaultRestitution);
+            BulletSimAPI.SetFriction2(PhysBody.ptr, PhysicsScene.Params.defaultFriction);
+            BulletSimAPI.SetRestitution2(PhysBody.ptr, PhysicsScene.Params.defaultRestitution);
 
             // per http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=3382
             // Since this can be called multiple times, only zero forces when becoming physical
             // BulletSimAPI.ClearAllForces2(BSBody.ptr);
 
             // For good measure, make sure the transform is set through to the motion state
-            BulletSimAPI.SetTranslation2(BSBody.ptr, _position, _orientation);
+            BulletSimAPI.SetTranslation2(PhysBody.ptr, _position, _orientation);
 
             // A dynamic object has mass
             UpdatePhysicalMassProperties(MassRaw);
@@ -704,26 +704,26 @@ public sealed class BSPrim : BSPhysObject
             // Set collision detection parameters
             if (PhysicsScene.Params.ccdMotionThreshold > 0f)
             {
-                BulletSimAPI.SetCcdMotionThreshold2(BSBody.ptr, PhysicsScene.Params.ccdMotionThreshold);
-                BulletSimAPI.SetCcdSweptSphereRadius2(BSBody.ptr, PhysicsScene.Params.ccdSweptSphereRadius);
+                BulletSimAPI.SetCcdMotionThreshold2(PhysBody.ptr, PhysicsScene.Params.ccdMotionThreshold);
+                BulletSimAPI.SetCcdSweptSphereRadius2(PhysBody.ptr, PhysicsScene.Params.ccdSweptSphereRadius);
             }
 
             // Various values for simulation limits
-            BulletSimAPI.SetDamping2(BSBody.ptr, PhysicsScene.Params.linearDamping, PhysicsScene.Params.angularDamping);
-            BulletSimAPI.SetDeactivationTime2(BSBody.ptr, PhysicsScene.Params.deactivationTime);
-            BulletSimAPI.SetSleepingThresholds2(BSBody.ptr, PhysicsScene.Params.linearSleepingThreshold, PhysicsScene.Params.angularSleepingThreshold);
-            BulletSimAPI.SetContactProcessingThreshold2(BSBody.ptr, PhysicsScene.Params.contactProcessingThreshold);
+            BulletSimAPI.SetDamping2(PhysBody.ptr, PhysicsScene.Params.linearDamping, PhysicsScene.Params.angularDamping);
+            BulletSimAPI.SetDeactivationTime2(PhysBody.ptr, PhysicsScene.Params.deactivationTime);
+            BulletSimAPI.SetSleepingThresholds2(PhysBody.ptr, PhysicsScene.Params.linearSleepingThreshold, PhysicsScene.Params.angularSleepingThreshold);
+            BulletSimAPI.SetContactProcessingThreshold2(PhysBody.ptr, PhysicsScene.Params.contactProcessingThreshold);
 
             // There might be special things needed for implementing linksets.
             Linkset.MakeDynamic(this);
 
             // Force activation of the object so Bullet will act on it.
             // Must do the ForceActivationState2() to overcome the DISABLE_SIMULATION from static objects.
-            BulletSimAPI.ForceActivationState2(BSBody.ptr, ActivationState.ACTIVE_TAG);
+            BulletSimAPI.ForceActivationState2(PhysBody.ptr, ActivationState.ACTIVE_TAG);
             // BulletSimAPI.Activate2(BSBody.ptr, true);
 
-            BSBody.collisionFilter = CollisionFilterGroups.ObjectFilter;
-            BSBody.collisionMask = CollisionFilterGroups.ObjectMask;
+            PhysBody.collisionFilter = CollisionFilterGroups.ObjectFilter;
+            PhysBody.collisionMask = CollisionFilterGroups.ObjectMask;
         }
     }
 
@@ -733,7 +733,7 @@ public sealed class BSPrim : BSPhysObject
     //     the functions after this one set up the state of a possibly newly created collision body.
     private void MakeSolid(bool makeSolid)
     {
-        CollisionObjectTypes bodyType = (CollisionObjectTypes)BulletSimAPI.GetBodyType2(BSBody.ptr);
+        CollisionObjectTypes bodyType = (CollisionObjectTypes)BulletSimAPI.GetBodyType2(PhysBody.ptr);
         if (makeSolid)
         {
             // Verify the previous code created the correct shape for this type of thing.
@@ -741,7 +741,7 @@ public sealed class BSPrim : BSPhysObject
             {
                 m_log.ErrorFormat("{0} MakeSolid: physical body of wrong type for solidity. id={1}, type={2}", LogHeader, LocalID, bodyType);
             }
-            CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(BSBody.ptr, CollisionFlags.CF_NO_CONTACT_RESPONSE);
+            CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(PhysBody.ptr, CollisionFlags.CF_NO_CONTACT_RESPONSE);
         }
         else
         {
@@ -749,9 +749,9 @@ public sealed class BSPrim : BSPhysObject
             {
                 m_log.ErrorFormat("{0} MakeSolid: physical body of wrong type for non-solidness. id={1}, type={2}", LogHeader, LocalID, bodyType);
             }
-            CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(BSBody.ptr, CollisionFlags.CF_NO_CONTACT_RESPONSE);
-            BSBody.collisionFilter = CollisionFilterGroups.VolumeDetectFilter;
-            BSBody.collisionMask = CollisionFilterGroups.VolumeDetectMask;
+            CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(PhysBody.ptr, CollisionFlags.CF_NO_CONTACT_RESPONSE);
+            PhysBody.collisionFilter = CollisionFilterGroups.VolumeDetectFilter;
+            PhysBody.collisionMask = CollisionFilterGroups.VolumeDetectMask;
         }
     }
 
@@ -761,7 +761,7 @@ public sealed class BSPrim : BSPhysObject
     private void ActivateIfPhysical(bool forceIt)
     {
         if (IsPhysical)
-            BulletSimAPI.Activate2(BSBody.ptr, forceIt);
+            BulletSimAPI.Activate2(PhysBody.ptr, forceIt);
     }
 
     // Turn on or off the flag controlling whether collision events are returned to the simulator.
@@ -769,11 +769,11 @@ public sealed class BSPrim : BSPhysObject
     {
         if (wantsCollisionEvents)
         {
-            CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(BSBody.ptr, CollisionFlags.BS_SUBSCRIBE_COLLISION_EVENTS);
+            CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(PhysBody.ptr, CollisionFlags.BS_SUBSCRIBE_COLLISION_EVENTS);
         }
         else
         {
-            CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(BSBody.ptr, CollisionFlags.BS_SUBSCRIBE_COLLISION_EVENTS);
+            CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(PhysBody.ptr, CollisionFlags.BS_SUBSCRIBE_COLLISION_EVENTS);
         }
     }
 
@@ -818,9 +818,9 @@ public sealed class BSPrim : BSPhysObject
             PhysicsScene.TaintedObject("BSPrim.setFloatOnWater", delegate()
             {
                 if (_floatOnWater)
-                    CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(BSBody.ptr, CollisionFlags.BS_FLOATS_ON_WATER);
+                    CurrentCollisionFlags = BulletSimAPI.AddToCollisionFlags2(PhysBody.ptr, CollisionFlags.BS_FLOATS_ON_WATER);
                 else
-                    CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(BSBody.ptr, CollisionFlags.BS_FLOATS_ON_WATER);
+                    CurrentCollisionFlags = BulletSimAPI.RemoveFromCollisionFlags2(PhysBody.ptr, CollisionFlags.BS_FLOATS_ON_WATER);
             });
         }
     }
@@ -843,7 +843,7 @@ public sealed class BSPrim : BSPhysObject
             PhysicsScene.TaintedObject("BSPrim.setRotationalVelocity", delegate()
             {
                 DetailLog("{0},BSPrim.SetRotationalVel,taint,rotvel={1}", LocalID, _rotationalVelocity);
-                BulletSimAPI.SetAngularVelocity2(BSBody.ptr, _rotationalVelocity);
+                BulletSimAPI.SetAngularVelocity2(PhysBody.ptr, _rotationalVelocity);
             });
         }
     }
@@ -853,7 +853,7 @@ public sealed class BSPrim : BSPhysObject
         }
         set {
             _rotationalVelocity = value;
-            BulletSimAPI.SetAngularVelocity2(BSBody.ptr, _rotationalVelocity);
+            BulletSimAPI.SetAngularVelocity2(PhysBody.ptr, _rotationalVelocity);
         }
     }
     public override bool Kinematic {
@@ -879,7 +879,7 @@ public sealed class BSPrim : BSPhysObject
             // DetailLog("{0},BSPrim.setForceBuoyancy,taint,buoy={1}", LocalID, _buoyancy);
             // Buoyancy is faked by changing the gravity applied to the object
             float grav = PhysicsScene.Params.gravity * (1f - _buoyancy);
-            BulletSimAPI.SetGravity2(BSBody.ptr, new OMV.Vector3(0f, 0f, grav));
+            BulletSimAPI.SetGravity2(PhysBody.ptr, new OMV.Vector3(0f, 0f, grav));
         }
     }
 
@@ -946,7 +946,7 @@ public sealed class BSPrim : BSPhysObject
             }
             DetailLog("{0},BSPrim.AddForce,taint,force={1}", LocalID, fSum);
             if (fSum != OMV.Vector3.Zero)
-                BulletSimAPI.ApplyCentralForce2(BSBody.ptr, fSum);
+                BulletSimAPI.ApplyCentralForce2(PhysBody.ptr, fSum);
         };
         if (inTaintTime)
             addForceOperation();
@@ -986,7 +986,7 @@ public sealed class BSPrim : BSPhysObject
             DetailLog("{0},BSPrim.AddAngularForce,taint,aForce={1}", LocalID, fSum);
             if (fSum != OMV.Vector3.Zero)
             {
-                BulletSimAPI.ApplyTorque2(BSBody.ptr, fSum);
+                BulletSimAPI.ApplyTorque2(PhysBody.ptr, fSum);
                 _torque = fSum;
             }
         };
@@ -1002,7 +1002,7 @@ public sealed class BSPrim : BSPhysObject
         BSScene.TaintCallback applyTorqueImpulseOperation = delegate()
         {
             DetailLog("{0},BSPrim.ApplyTorqueImpulse,taint,tImpulse={1}", LocalID, applyImpulse);
-            BulletSimAPI.ApplyTorqueImpulse2(BSBody.ptr, applyImpulse);
+            BulletSimAPI.ApplyTorqueImpulse2(PhysBody.ptr, applyImpulse);
         };
         if (inTaintTime)
             applyTorqueImpulseOperation();
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
index c27b5f0..cc5dbb2 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
@@ -1067,49 +1067,49 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
             (s,cf,p,v) => { s.m_params[0].linearDamping = cf.GetFloat(p, v); },
             (s) => { return s.m_params[0].linearDamping; },
             (s,p,l,v) => { s.UpdateParameterObject(ref s.m_params[0].linearDamping, p, l, v); },
-            (s,o,v) => { BulletSimAPI.SetDamping2(o.BSBody.ptr, v, v); } ),
+            (s,o,v) => { BulletSimAPI.SetDamping2(o.PhysBody.ptr, v, v); } ),
         new ParameterDefn("AngularDamping", "Factor to damp angular movement per second (0.0 - 1.0)",
             0f,
             (s,cf,p,v) => { s.m_params[0].angularDamping = cf.GetFloat(p, v); },
             (s) => { return s.m_params[0].angularDamping; },
             (s,p,l,v) => { s.UpdateParameterObject(ref s.m_params[0].angularDamping, p, l, v); },
-            (s,o,v) => { BulletSimAPI.SetDamping2(o.BSBody.ptr, v, v); } ),
+            (s,o,v) => { BulletSimAPI.SetDamping2(o.PhysBody.ptr, v, v); } ),
         new ParameterDefn("DeactivationTime", "Seconds before considering an object potentially static",
             0.2f,
             (s,cf,p,v) => { s.m_params[0].deactivationTime = cf.GetFloat(p, v); },
             (s) => { return s.m_params[0].deactivationTime; },
             (s,p,l,v) => { s.UpdateParameterObject(ref s.m_params[0].deactivationTime, p, l, v); },
-            (s,o,v) => { BulletSimAPI.SetDeactivationTime2(o.BSBody.ptr, v); } ),
+            (s,o,v) => { BulletSimAPI.SetDeactivationTime2(o.PhysBody.ptr, v); } ),
         new ParameterDefn("LinearSleepingThreshold", "Seconds to measure linear movement before considering static",
             0.8f,
             (s,cf,p,v) => { s.m_params[0].linearSleepingThreshold = cf.GetFloat(p, v); },
             (s) => { return s.m_params[0].linearSleepingThreshold; },
             (s,p,l,v) => { s.UpdateParameterObject(ref s.m_params[0].linearSleepingThreshold, p, l, v); },
-            (s,o,v) => { BulletSimAPI.SetSleepingThresholds2(o.BSBody.ptr, v, v); } ),
+            (s,o,v) => { BulletSimAPI.SetSleepingThresholds2(o.PhysBody.ptr, v, v); } ),
         new ParameterDefn("AngularSleepingThreshold", "Seconds to measure angular movement before considering static",
             1.0f,
             (s,cf,p,v) => { s.m_params[0].angularSleepingThreshold = cf.GetFloat(p, v); },
             (s) => { return s.m_params[0].angularSleepingThreshold; },
             (s,p,l,v) => { s.UpdateParameterObject(ref s.m_params[0].angularSleepingThreshold, p, l, v); },
-            (s,o,v) => { BulletSimAPI.SetSleepingThresholds2(o.BSBody.ptr, v, v); } ),
+            (s,o,v) => { BulletSimAPI.SetSleepingThresholds2(o.PhysBody.ptr, v, v); } ),
         new ParameterDefn("CcdMotionThreshold", "Continuious collision detection threshold (0 means no CCD)" ,
             0f,     // set to zero to disable
             (s,cf,p,v) => { s.m_params[0].ccdMotionThreshold = cf.GetFloat(p, v); },
             (s) => { return s.m_params[0].ccdMotionThreshold; },
             (s,p,l,v) => { s.UpdateParameterObject(ref s.m_params[0].ccdMotionThreshold, p, l, v); },
-            (s,o,v) => { BulletSimAPI.SetCcdMotionThreshold2(o.BSBody.ptr, v); } ),
+            (s,o,v) => { BulletSimAPI.SetCcdMotionThreshold2(o.PhysBody.ptr, v); } ),
         new ParameterDefn("CcdSweptSphereRadius", "Continuious collision detection test radius" ,
             0f,
             (s,cf,p,v) => { s.m_params[0].ccdSweptSphereRadius = cf.GetFloat(p, v); },
             (s) => { return s.m_params[0].ccdSweptSphereRadius; },
             (s,p,l,v) => { s.UpdateParameterObject(ref s.m_params[0].ccdSweptSphereRadius, p, l, v); },
-            (s,o,v) => { BulletSimAPI.SetCcdSweptSphereRadius2(o.BSBody.ptr, v); } ),
+            (s,o,v) => { BulletSimAPI.SetCcdSweptSphereRadius2(o.PhysBody.ptr, v); } ),
         new ParameterDefn("ContactProcessingThreshold", "Distance between contacts before doing collision check" ,
             0.1f,
             (s,cf,p,v) => { s.m_params[0].contactProcessingThreshold = cf.GetFloat(p, v); },
             (s) => { return s.m_params[0].contactProcessingThreshold; },
             (s,p,l,v) => { s.UpdateParameterObject(ref s.m_params[0].contactProcessingThreshold, p, l, v); },
-            (s,o,v) => { BulletSimAPI.SetContactProcessingThreshold2(o.BSBody.ptr, v); } ),
+            (s,o,v) => { BulletSimAPI.SetContactProcessingThreshold2(o.PhysBody.ptr, v); } ),
 
         new ParameterDefn("TerrainFriction", "Factor to reduce movement against terrain surface" ,
             0.5f,
@@ -1428,8 +1428,8 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
     {
         foreach (BSPrim prim in m_vehicles)
         {
-            BulletSimAPI.DumpRigidBody2(World.ptr, prim.BSBody.ptr);
-            BulletSimAPI.DumpCollisionShape2(World.ptr, prim.BSShape.ptr);
+            BulletSimAPI.DumpRigidBody2(World.ptr, prim.PhysBody.ptr);
+            BulletSimAPI.DumpCollisionShape2(World.ptr, prim.PhysShape.ptr);
         }
     }
 
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs b/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs
index 1219fc0..a38e650 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs
@@ -106,11 +106,11 @@ public sealed class BSShapeCollection : IDisposable
             //    rebuild the body around it.
             // Updates prim.BSBody with information/pointers to requested body
             bool newBody = CreateBody((newGeom || forceRebuild), prim, PhysicsScene.World,
-                                    prim.BSShape, shapeData, bodyCallback);
+                                    prim.PhysShape, shapeData, bodyCallback);
             ret = newGeom || newBody;
         }
         DetailLog("{0},BSShapeCollection.GetBodyAndShape,taintExit,force={1},ret={2},body={3},shape={4}",
-                                prim.LocalID, forceRebuild, ret, prim.BSBody, prim.BSShape);
+                                prim.LocalID, forceRebuild, ret, prim.PhysBody, prim.PhysShape);
 
         return ret;
     }
@@ -337,7 +337,7 @@ public sealed class BSShapeCollection : IDisposable
             // an avatar capsule is close to a native shape (it is not shared)
             ret = GetReferenceToNativeShape(prim, shapeData, ShapeData.PhysicsShapeType.SHAPE_AVATAR,
                             ShapeData.FixedShapeKey.KEY_CAPSULE, shapeCallback);
-            DetailLog("{0},BSShapeCollection.CreateGeom,avatarCapsule,shape={1}", prim.LocalID, prim.BSShape);
+            DetailLog("{0},BSShapeCollection.CreateGeom,avatarCapsule,shape={1}", prim.LocalID, prim.PhysShape);
             ret = true;
             haveShape = true;
         }
@@ -360,13 +360,13 @@ public sealed class BSShapeCollection : IDisposable
                 haveShape = true;
                 if (forceRebuild
                         || prim.Scale != shapeData.Size
-                        || prim.BSShape.type != ShapeData.PhysicsShapeType.SHAPE_SPHERE
+                        || prim.PhysShape.type != ShapeData.PhysicsShapeType.SHAPE_SPHERE
                         )
                 {
                     ret = GetReferenceToNativeShape(prim, shapeData, ShapeData.PhysicsShapeType.SHAPE_SPHERE,
                                             ShapeData.FixedShapeKey.KEY_SPHERE, shapeCallback);
                     DetailLog("{0},BSShapeCollection.CreateGeom,sphere,force={1},shape={2}",
-                                        prim.LocalID, forceRebuild, prim.BSShape);
+                                        prim.LocalID, forceRebuild, prim.PhysShape);
                 }
             }
             if (pbs.ProfileShape == ProfileShape.Square && pbs.PathCurve == (byte)Extrusion.Straight)
@@ -374,13 +374,13 @@ public sealed class BSShapeCollection : IDisposable
                 haveShape = true;
                 if (forceRebuild
                         || prim.Scale != shapeData.Size
-                        || prim.BSShape.type != ShapeData.PhysicsShapeType.SHAPE_BOX
+                        || prim.PhysShape.type != ShapeData.PhysicsShapeType.SHAPE_BOX
                         )
                 {
                     ret = GetReferenceToNativeShape( prim, shapeData, ShapeData.PhysicsShapeType.SHAPE_BOX,
                                             ShapeData.FixedShapeKey.KEY_BOX, shapeCallback);
                     DetailLog("{0},BSShapeCollection.CreateGeom,box,force={1},shape={2}",
-                                        prim.LocalID, forceRebuild, prim.BSShape);
+                                        prim.LocalID, forceRebuild, prim.PhysShape);
                 }
             }
         }
@@ -394,13 +394,13 @@ public sealed class BSShapeCollection : IDisposable
                 // Update prim.BSShape to reference a hull of this shape.
                 ret = GetReferenceToHull(prim, shapeData, pbs, shapeCallback);
                 DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}",
-                                        shapeData.ID, prim.BSShape, prim.BSShape.shapeKey.ToString("X"));
+                                        shapeData.ID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
             }
             else
             {
                 ret = GetReferenceToMesh(prim, shapeData, pbs, shapeCallback);
                 DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}",
-                                        shapeData.ID, prim.BSShape, prim.BSShape.shapeKey.ToString("X"));
+                                        shapeData.ID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
             }
         }
         return ret;
@@ -413,7 +413,7 @@ public sealed class BSShapeCollection : IDisposable
                             ShapeDestructionCallback shapeCallback)
     {
         // release any previous shape
-        DereferenceShape(prim.BSShape, true, shapeCallback);
+        DereferenceShape(prim.PhysShape, true, shapeCallback);
 
         shapeData.Type = shapeType;
         // Bullet native objects are scaled by the Bullet engine so pass the size in
@@ -426,7 +426,7 @@ public sealed class BSShapeCollection : IDisposable
         DetailLog("{0},BSShapeCollection.AddNativeShapeToPrim,create,newshape={1},scale={2}",
                                 shapeData.ID, newShape, shapeData.Scale);
 
-        prim.BSShape = newShape;
+        prim.PhysShape = newShape;
         return true;
     }
 
@@ -475,14 +475,14 @@ public sealed class BSShapeCollection : IDisposable
         System.UInt64 newMeshKey = ComputeShapeKey(shapeData, pbs, out lod);
 
         // if this new shape is the same as last time, don't recreate the mesh
-        if (newMeshKey == prim.BSShape.shapeKey && prim.BSShape.type == ShapeData.PhysicsShapeType.SHAPE_MESH)
+        if (newMeshKey == prim.PhysShape.shapeKey && prim.PhysShape.type == ShapeData.PhysicsShapeType.SHAPE_MESH)
             return false;
 
         DetailLog("{0},BSShapeCollection.CreateGeomMesh,create,oldKey={1},newKey={2}",
-                                prim.LocalID, prim.BSShape.shapeKey.ToString("X"), newMeshKey.ToString("X"));
+                                prim.LocalID, prim.PhysShape.shapeKey.ToString("X"), newMeshKey.ToString("X"));
 
         // Since we're recreating new, get rid of the reference to the previous shape
-        DereferenceShape(prim.BSShape, true, shapeCallback);
+        DereferenceShape(prim.PhysShape, true, shapeCallback);
 
         newShape = CreatePhysicalMesh(prim.PhysObjectName, newMeshKey, pbs, shapeData.Size, lod);
         // Take evasive action if the mesh was not constructed.
@@ -492,7 +492,7 @@ public sealed class BSShapeCollection : IDisposable
 
         // meshes are already scaled by the meshmerizer
         prim.Scale = new OMV.Vector3(1f, 1f, 1f);
-        prim.BSShape = newShape;
+        prim.PhysShape = newShape;
 
         return true;        // 'true' means a new shape has been added to this prim
     }
@@ -550,14 +550,14 @@ public sealed class BSShapeCollection : IDisposable
         System.UInt64 newHullKey = ComputeShapeKey(shapeData, pbs, out lod);
 
         // if the hull hasn't changed, don't rebuild it
-        if (newHullKey == prim.BSShape.shapeKey && prim.BSShape.type == ShapeData.PhysicsShapeType.SHAPE_HULL)
+        if (newHullKey == prim.PhysShape.shapeKey && prim.PhysShape.type == ShapeData.PhysicsShapeType.SHAPE_HULL)
             return false;
 
         DetailLog("{0},BSShapeCollection.CreateGeomHull,create,oldKey={1},newKey={2}",
-                        prim.LocalID, prim.BSShape.shapeKey.ToString("X"), newHullKey.ToString("X"));
+                        prim.LocalID, prim.PhysShape.shapeKey.ToString("X"), newHullKey.ToString("X"));
 
         // Remove usage of the previous shape.
-        DereferenceShape(prim.BSShape, true, shapeCallback);
+        DereferenceShape(prim.PhysShape, true, shapeCallback);
 
         newShape = CreatePhysicalHull(prim.PhysObjectName, newHullKey, pbs, shapeData.Size, lod);
         newShape = VerifyMeshCreated(newShape, prim, shapeData, pbs);
@@ -566,7 +566,7 @@ public sealed class BSShapeCollection : IDisposable
 
         // hulls are already scaled by the meshmerizer
         prim.Scale = new OMV.Vector3(1f, 1f, 1f);
-        prim.BSShape = newShape;
+        prim.PhysShape = newShape;
         return true;        // 'true' means a new shape has been added to this prim
     }
 
@@ -778,13 +778,13 @@ public sealed class BSShapeCollection : IDisposable
         bool ret = false;
 
         // the mesh, hull or native shape must have already been created in Bullet
-        bool mustRebuild = (prim.BSBody.ptr == IntPtr.Zero);
+        bool mustRebuild = (prim.PhysBody.ptr == IntPtr.Zero);
 
         // If there is an existing body, verify it's of an acceptable type.
         // If not a solid object, body is a GhostObject. Otherwise a RigidBody.
         if (!mustRebuild)
         {
-            CollisionObjectTypes bodyType = (CollisionObjectTypes)BulletSimAPI.GetBodyType2(prim.BSBody.ptr);
+            CollisionObjectTypes bodyType = (CollisionObjectTypes)BulletSimAPI.GetBodyType2(prim.PhysBody.ptr);
             if (prim.IsSolid && bodyType != CollisionObjectTypes.CO_RIGID_BODY
                 || !prim.IsSolid && bodyType != CollisionObjectTypes.CO_GHOST_OBJECT)
             {
@@ -796,7 +796,7 @@ public sealed class BSShapeCollection : IDisposable
         if (mustRebuild || forceRebuild)
         {
             // Free any old body
-            DereferenceBody(prim.BSBody, true, bodyCallback);
+            DereferenceBody(prim.PhysBody, true, bodyCallback);
 
             BulletBody aBody;
             IntPtr bodyPtr = IntPtr.Zero;
@@ -816,7 +816,7 @@ public sealed class BSShapeCollection : IDisposable
 
             ReferenceBody(aBody, true);
 
-            prim.BSBody = aBody;
+            prim.PhysBody = aBody;
 
             ret = true;
         }