17 files changed, 826 insertions, 494 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs b/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs
index ae54499..3a27d2c 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSAPIUnman.cs
@@ -438,6 +438,28 @@ public override BulletConstraint Create6DofConstraintToPoint(BulletWorld world,
                     joinPoint, useLinearReferenceFrameA, disableCollisionsBetweenLinkedBodies));
 }
 
+public override BulletConstraint Create6DofConstraintFixed(BulletWorld world, BulletBody obj1,
+                    Vector3 frameInBloc, Quaternion frameInBrot,
+                    bool useLinearReferenceFrameB, bool disableCollisionsBetweenLinkedBodies)
+{
+    BulletWorldUnman worldu = world as BulletWorldUnman;
+    BulletBodyUnman bodyu1 = obj1 as BulletBodyUnman;
+    return new BulletConstraintUnman(BSAPICPP.Create6DofConstraintFixed2(worldu.ptr, bodyu1.ptr,
+                    frameInBloc, frameInBrot, useLinearReferenceFrameB, disableCollisionsBetweenLinkedBodies));
+}
+
+public override BulletConstraint Create6DofSpringConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 frame1loc, Quaternion frame1rot,
+                    Vector3 frame2loc, Quaternion frame2rot,
+                    bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies)
+{
+    BulletWorldUnman worldu = world as BulletWorldUnman;
+    BulletBodyUnman bodyu1 = obj1 as BulletBodyUnman;
+    BulletBodyUnman bodyu2 = obj2 as BulletBodyUnman;
+    return new BulletConstraintUnman(BSAPICPP.Create6DofSpringConstraint2(worldu.ptr, bodyu1.ptr, bodyu2.ptr, frame1loc, frame1rot,
+                    frame2loc, frame2rot, useLinearReferenceFrameA, disableCollisionsBetweenLinkedBodies));
+}
+
 public override BulletConstraint CreateHingeConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
                     Vector3 pivotinA, Vector3 pivotinB,
                     Vector3 axisInA, Vector3 axisInB,
@@ -450,6 +472,52 @@ public override BulletConstraint CreateHingeConstraint(BulletWorld world, Bullet
                     pivotinA, pivotinB, axisInA, axisInB, useLinearReferenceFrameA, disableCollisionsBetweenLinkedBodies));
 }
 
+public override BulletConstraint CreateSliderConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 frame1loc, Quaternion frame1rot,
+                    Vector3 frame2loc, Quaternion frame2rot,
+                    bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies)
+{
+    BulletWorldUnman worldu = world as BulletWorldUnman;
+    BulletBodyUnman bodyu1 = obj1 as BulletBodyUnman;
+    BulletBodyUnman bodyu2 = obj2 as BulletBodyUnman;
+    return new BulletConstraintUnman(BSAPICPP.CreateSliderConstraint2(worldu.ptr, bodyu1.ptr, bodyu2.ptr, frame1loc, frame1rot,
+                    frame2loc, frame2rot, useLinearReferenceFrameA, disableCollisionsBetweenLinkedBodies));
+}
+
+public override BulletConstraint CreateConeTwistConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 frame1loc, Quaternion frame1rot,
+                    Vector3 frame2loc, Quaternion frame2rot,
+                    bool disableCollisionsBetweenLinkedBodies)
+{
+    BulletWorldUnman worldu = world as BulletWorldUnman;
+    BulletBodyUnman bodyu1 = obj1 as BulletBodyUnman;
+    BulletBodyUnman bodyu2 = obj2 as BulletBodyUnman;
+    return new BulletConstraintUnman(BSAPICPP.CreateConeTwistConstraint2(worldu.ptr, bodyu1.ptr, bodyu2.ptr, frame1loc, frame1rot,
+                                        frame2loc, frame2rot, disableCollisionsBetweenLinkedBodies));
+}
+
+public override BulletConstraint CreateGearConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 axisInA, Vector3 axisInB,
+                    float ratio, bool disableCollisionsBetweenLinkedBodies)
+{
+    BulletWorldUnman worldu = world as BulletWorldUnman;
+    BulletBodyUnman bodyu1 = obj1 as BulletBodyUnman;
+    BulletBodyUnman bodyu2 = obj2 as BulletBodyUnman;
+    return new BulletConstraintUnman(BSAPICPP.CreateGearConstraint2(worldu.ptr, bodyu1.ptr, bodyu2.ptr, axisInA, axisInB,
+                                        ratio, disableCollisionsBetweenLinkedBodies));
+}
+
+public override BulletConstraint CreatePoint2PointConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 pivotInA, Vector3 pivotInB,
+                    bool disableCollisionsBetweenLinkedBodies)
+{
+    BulletWorldUnman worldu = world as BulletWorldUnman;
+    BulletBodyUnman bodyu1 = obj1 as BulletBodyUnman;
+    BulletBodyUnman bodyu2 = obj2 as BulletBodyUnman;
+    return new BulletConstraintUnman(BSAPICPP.CreatePoint2PointConstraint2(worldu.ptr, bodyu1.ptr, bodyu2.ptr, pivotInA, pivotInB,
+                                        disableCollisionsBetweenLinkedBodies));
+}
+
 public override void SetConstraintEnable(BulletConstraint constrain, float numericTrueFalse)
 {
     BulletConstraintUnman constrainu = constrain as BulletConstraintUnman;
@@ -1426,12 +1494,46 @@ public static extern IntPtr Create6DofConstraintToPoint2(IntPtr world, IntPtr ob
                     bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
 
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr Create6DofConstraintFixed2(IntPtr world, IntPtr obj1,
+                    Vector3 frameInBloc, Quaternion frameInBrot,
+                    bool useLinearReferenceFrameB, bool disableCollisionsBetweenLinkedBodies);
+
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr Create6DofSpringConstraint2(IntPtr world, IntPtr obj1, IntPtr obj2,
+                    Vector3 frame1loc, Quaternion frame1rot,
+                    Vector3 frame2loc, Quaternion frame2rot,
+                    bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
+
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern IntPtr CreateHingeConstraint2(IntPtr world, IntPtr obj1, IntPtr obj2,
                     Vector3 pivotinA, Vector3 pivotinB,
                     Vector3 axisInA, Vector3 axisInB,
                     bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
 
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr CreateSliderConstraint2(IntPtr world, IntPtr obj1, IntPtr obj2,
+                    Vector3 frameInAloc, Quaternion frameInArot,
+                    Vector3 frameInBloc, Quaternion frameInBrot,
+                    bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
+
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr CreateConeTwistConstraint2(IntPtr world, IntPtr obj1, IntPtr obj2,
+                    Vector3 frameInAloc, Quaternion frameInArot,
+                    Vector3 frameInBloc, Quaternion frameInBrot,
+                    bool disableCollisionsBetweenLinkedBodies);
+
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr CreateGearConstraint2(IntPtr world, IntPtr obj1, IntPtr obj2,
+                    Vector3 axisInA, Vector3 axisInB,
+                    float ratio, bool disableCollisionsBetweenLinkedBodies);
+
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern IntPtr CreatePoint2PointConstraint2(IntPtr world, IntPtr obj1, IntPtr obj2,
+                    Vector3 pivotInA, Vector3 pivotInB,
+                    bool disableCollisionsBetweenLinkedBodies);
+
+
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern void SetConstraintEnable2(IntPtr constrain, float numericTrueFalse);
 
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
index 39e62dd..6fc10e9 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
@@ -559,8 +559,9 @@ private sealed class BulletConstraintXNA : BulletConstraint
     }
 
 
-    //BulletSimAPI.Create6DofConstraint(m_world.ptr, m_body1.ptr, m_body2.ptr,frame1, frame1rot,frame2, frame2rot,useLinearReferenceFrameA, disableCollisionsBetweenLinkedBodies));
-    public override BulletConstraint Create6DofConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2, Vector3 pframe1, Quaternion pframe1rot, Vector3 pframe2, Quaternion pframe2rot, bool puseLinearReferenceFrameA, bool pdisableCollisionsBetweenLinkedBodies)
+    public override BulletConstraint Create6DofConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2, 
+                                    Vector3 pframe1, Quaternion pframe1rot, Vector3 pframe2, Quaternion pframe2rot, 
+                                    bool puseLinearReferenceFrameA, bool pdisableCollisionsBetweenLinkedBodies)
 
     {
         DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
@@ -584,7 +585,24 @@ private sealed class BulletConstraintXNA : BulletConstraint
         return new BulletConstraintXNA(consttr);
     }
 
-    
+    public override BulletConstraint Create6DofConstraintFixed(BulletWorld pWorld, BulletBody pBody1,
+                                        Vector3 pframe1, Quaternion pframe1rot,
+                                        bool pUseLinearReferenceFrameB, bool pdisableCollisionsBetweenLinkedBodies)
+    {
+        DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
+        RigidBody body1 = (pBody1 as BulletBodyXNA).rigidBody;
+        IndexedVector3 frame1v = new IndexedVector3(pframe1.X, pframe1.Y, pframe1.Z);
+        IndexedQuaternion frame1rot = new IndexedQuaternion(pframe1rot.X, pframe1rot.Y, pframe1rot.Z, pframe1rot.W);
+        IndexedMatrix frame1 = IndexedMatrix.CreateFromQuaternion(frame1rot);
+        frame1._origin = frame1v;
+
+        Generic6DofConstraint consttr = new Generic6DofConstraint(body1, ref frame1, pUseLinearReferenceFrameB);
+        consttr.CalculateTransforms();
+        world.AddConstraint(consttr,pdisableCollisionsBetweenLinkedBodies);
+
+        return new BulletConstraintXNA(consttr);
+    }
+
     /// <summary>
     /// 
     /// </summary>
@@ -1133,8 +1151,8 @@ private sealed class BulletConstraintXNA : BulletConstraint
         p.numberOfSolverIterations = o[0].numberOfSolverIterations;
 
         p.linksetImplementation = BSParam.LinksetImplementation;
-        p.linkConstraintUseFrameOffset = BSParam.LinkConstraintUseFrameOffset;
-        p.linkConstraintEnableTransMotor = BSParam.LinkConstraintEnableTransMotor;
+        p.linkConstraintUseFrameOffset = BSParam.NumericBool(BSParam.LinkConstraintUseFrameOffset);
+        p.linkConstraintEnableTransMotor = BSParam.NumericBool(BSParam.LinkConstraintEnableTransMotor);
         p.linkConstraintTransMotorMaxVel = BSParam.LinkConstraintTransMotorMaxVel;
         p.linkConstraintTransMotorMaxForce = BSParam.LinkConstraintTransMotorMaxForce;
         p.linkConstraintERP = BSParam.LinkConstraintERP;
@@ -1443,129 +1461,130 @@ private sealed class BulletConstraintXNA : BulletConstraint
 
     public BSPhysicsShapeType BSShapeTypeFromBroadPhaseNativeType(BroadphaseNativeTypes pin)
     {
+        BSPhysicsShapeType ret = BSPhysicsShapeType.SHAPE_UNKNOWN;
         switch (pin)
         {
             case BroadphaseNativeTypes.BOX_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_BOX;
+                ret =  BSPhysicsShapeType.SHAPE_BOX;
                 break;
             case BroadphaseNativeTypes.TRIANGLE_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
 
             case BroadphaseNativeTypes.TETRAHEDRAL_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.CONVEX_TRIANGLEMESH_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_MESH;
+                ret =  BSPhysicsShapeType.SHAPE_MESH;
                 break;
             case BroadphaseNativeTypes.CONVEX_HULL_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_HULL;
+                ret =  BSPhysicsShapeType.SHAPE_HULL;
                 break;
             case BroadphaseNativeTypes.CONVEX_POINT_CLOUD_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.CUSTOM_POLYHEDRAL_SHAPE_TYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             //implicit convex shapes
             case BroadphaseNativeTypes.IMPLICIT_CONVEX_SHAPES_START_HERE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.SPHERE_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_SPHERE;
+                ret =  BSPhysicsShapeType.SHAPE_SPHERE;
                 break;
             case BroadphaseNativeTypes.MULTI_SPHERE_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.CAPSULE_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_CAPSULE;
+                ret =  BSPhysicsShapeType.SHAPE_CAPSULE;
                 break;
             case BroadphaseNativeTypes.CONE_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_CONE;
+                ret =  BSPhysicsShapeType.SHAPE_CONE;
                 break;
             case BroadphaseNativeTypes.CONVEX_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.CYLINDER_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_CYLINDER;
+                ret =  BSPhysicsShapeType.SHAPE_CYLINDER;
                 break;
             case BroadphaseNativeTypes.UNIFORM_SCALING_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.MINKOWSKI_SUM_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.MINKOWSKI_DIFFERENCE_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.BOX_2D_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.CONVEX_2D_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.CUSTOM_CONVEX_SHAPE_TYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             //concave shape
             case BroadphaseNativeTypes.CONCAVE_SHAPES_START_HERE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             //keep all the convex shapetype below here, for the check IsConvexShape in broadphase proxy!
             case BroadphaseNativeTypes.TRIANGLE_MESH_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_MESH;
+                ret =  BSPhysicsShapeType.SHAPE_MESH;
                 break;
             case BroadphaseNativeTypes.SCALED_TRIANGLE_MESH_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_MESH;
+                ret =  BSPhysicsShapeType.SHAPE_MESH;
                 break;
             ///used for demo integration FAST/Swift collision library and Bullet
             case BroadphaseNativeTypes.FAST_CONCAVE_MESH_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_MESH;
+                ret =  BSPhysicsShapeType.SHAPE_MESH;
                 break;
             //terrain
             case BroadphaseNativeTypes.TERRAIN_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_HEIGHTMAP;
+                ret =  BSPhysicsShapeType.SHAPE_HEIGHTMAP;
                 break;
             ///Used for GIMPACT Trimesh integration
             case BroadphaseNativeTypes.GIMPACT_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_MESH;
+                ret =  BSPhysicsShapeType.SHAPE_MESH;
                 break;
             ///Multimaterial mesh
             case BroadphaseNativeTypes.MULTIMATERIAL_TRIANGLE_MESH_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_MESH;
+                ret =  BSPhysicsShapeType.SHAPE_MESH;
                 break;
 
             case BroadphaseNativeTypes.EMPTY_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.STATIC_PLANE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_GROUNDPLANE;
+                ret =  BSPhysicsShapeType.SHAPE_GROUNDPLANE;
                 break;
             case BroadphaseNativeTypes.CUSTOM_CONCAVE_SHAPE_TYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.CONCAVE_SHAPES_END_HERE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
 
             case BroadphaseNativeTypes.COMPOUND_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_COMPOUND;
+                ret =  BSPhysicsShapeType.SHAPE_COMPOUND;
                 break;
 
             case BroadphaseNativeTypes.SOFTBODY_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_MESH;
+                ret =  BSPhysicsShapeType.SHAPE_MESH;
                 break;
             case BroadphaseNativeTypes.HFFLUID_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.HFFLUID_BUOYANT_CONVEX_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
             case BroadphaseNativeTypes.INVALID_SHAPE_PROXYTYPE:
-                return BSPhysicsShapeType.SHAPE_UNKNOWN;
+                ret =  BSPhysicsShapeType.SHAPE_UNKNOWN;
                 break;
         }
-        return BSPhysicsShapeType.SHAPE_UNKNOWN;
+        return ret;
     }
 
     public override void RemoveChildShapeFromCompoundShape(BulletShape cShape, BulletShape removeShape) { /* TODO */ }
@@ -1579,7 +1598,39 @@ private sealed class BulletConstraintXNA : BulletConstraint
         return new BulletShapeXNA(m_planeshape, BSPhysicsShapeType.SHAPE_GROUNDPLANE);
     }
 
-    public override BulletConstraint CreateHingeConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2, Vector3 ppivotInA, Vector3 ppivotInB, Vector3 paxisInA, Vector3 paxisInB, bool puseLinearReferenceFrameA, bool pdisableCollisionsBetweenLinkedBodies)
+    public override BulletConstraint Create6DofSpringConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2, 
+                                    Vector3 pframe1, Quaternion pframe1rot, Vector3 pframe2, Quaternion pframe2rot, 
+                                    bool puseLinearReferenceFrameA, bool pdisableCollisionsBetweenLinkedBodies)
+
+    {
+        Generic6DofSpringConstraint constrain = null;
+        DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
+        RigidBody body1 = (pBody1 as BulletBodyXNA).rigidBody;
+        RigidBody body2 = (pBody2 as BulletBodyXNA).rigidBody;
+        if (body1 != null && body2 != null)
+        {
+            IndexedVector3 frame1v = new IndexedVector3(pframe1.X, pframe1.Y, pframe1.Z);
+            IndexedQuaternion frame1rot = new IndexedQuaternion(pframe1rot.X, pframe1rot.Y, pframe1rot.Z, pframe1rot.W);
+            IndexedMatrix frame1 = IndexedMatrix.CreateFromQuaternion(frame1rot);
+            frame1._origin = frame1v;
+
+            IndexedVector3 frame2v = new IndexedVector3(pframe2.X, pframe2.Y, pframe2.Z);
+            IndexedQuaternion frame2rot = new IndexedQuaternion(pframe2rot.X, pframe2rot.Y, pframe2rot.Z, pframe2rot.W);
+            IndexedMatrix frame2 = IndexedMatrix.CreateFromQuaternion(frame2rot);
+            frame2._origin = frame1v;
+
+            constrain = new Generic6DofSpringConstraint(body1, body2, ref frame1, ref frame2, puseLinearReferenceFrameA);
+            world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);
+
+            constrain.CalculateTransforms();
+        }
+
+        return new BulletConstraintXNA(constrain);
+    }
+
+    public override BulletConstraint CreateHingeConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2,
+                        Vector3 ppivotInA, Vector3 ppivotInB, Vector3 paxisInA, Vector3 paxisInB,
+                        bool puseLinearReferenceFrameA, bool pdisableCollisionsBetweenLinkedBodies)
     {
         HingeConstraint constrain = null;
         DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
@@ -1591,6 +1642,100 @@ private sealed class BulletConstraintXNA : BulletConstraint
             IndexedVector3 pivotInB = new IndexedVector3(ppivotInB.X, ppivotInB.Y, ppivotInB.Z);
             IndexedVector3 axisInA = new IndexedVector3(paxisInA.X, paxisInA.Y, paxisInA.Z);
             IndexedVector3 axisInB = new IndexedVector3(paxisInB.X, paxisInB.Y, paxisInB.Z);
+            constrain = new HingeConstraint(rb1, rb2, ref pivotInA, ref pivotInB, ref axisInA, ref axisInB, puseLinearReferenceFrameA);
+            world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);
+        }
+        return new BulletConstraintXNA(constrain);
+    }
+
+    public override BulletConstraint CreateSliderConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2,
+                        Vector3 pframe1, Quaternion pframe1rot,
+                        Vector3 pframe2, Quaternion pframe2rot,
+                        bool puseLinearReferenceFrameA, bool pdisableCollisionsBetweenLinkedBodies)
+    {
+        SliderConstraint constrain = null;
+        DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
+        RigidBody rb1 = (pBody1 as BulletBodyXNA).rigidBody;
+        RigidBody rb2 = (pBody2 as BulletBodyXNA).rigidBody;
+        if (rb1 != null && rb2 != null)
+        {
+            IndexedVector3 frame1v = new IndexedVector3(pframe1.X, pframe1.Y, pframe1.Z);
+            IndexedQuaternion frame1rot = new IndexedQuaternion(pframe1rot.X, pframe1rot.Y, pframe1rot.Z, pframe1rot.W);
+            IndexedMatrix frame1 = IndexedMatrix.CreateFromQuaternion(frame1rot);
+            frame1._origin = frame1v;
+
+            IndexedVector3 frame2v = new IndexedVector3(pframe2.X, pframe2.Y, pframe2.Z);
+            IndexedQuaternion frame2rot = new IndexedQuaternion(pframe2rot.X, pframe2rot.Y, pframe2rot.Z, pframe2rot.W);
+            IndexedMatrix frame2 = IndexedMatrix.CreateFromQuaternion(frame2rot);
+            frame2._origin = frame1v;
+
+            constrain = new SliderConstraint(rb1, rb2, ref frame1, ref frame2, puseLinearReferenceFrameA);
+            world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);
+        }
+        return new BulletConstraintXNA(constrain);
+    }
+
+    public override BulletConstraint CreateConeTwistConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2,
+                        Vector3 pframe1, Quaternion pframe1rot,
+                        Vector3 pframe2, Quaternion pframe2rot,
+                        bool pdisableCollisionsBetweenLinkedBodies)
+    {
+        ConeTwistConstraint constrain = null;
+        DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
+        RigidBody rb1 = (pBody1 as BulletBodyXNA).rigidBody;
+        RigidBody rb2 = (pBody2 as BulletBodyXNA).rigidBody;
+        if (rb1 != null && rb2 != null)
+        {
+            IndexedVector3 frame1v = new IndexedVector3(pframe1.X, pframe1.Y, pframe1.Z);
+            IndexedQuaternion frame1rot = new IndexedQuaternion(pframe1rot.X, pframe1rot.Y, pframe1rot.Z, pframe1rot.W);
+            IndexedMatrix frame1 = IndexedMatrix.CreateFromQuaternion(frame1rot);
+            frame1._origin = frame1v;
+
+            IndexedVector3 frame2v = new IndexedVector3(pframe2.X, pframe2.Y, pframe2.Z);
+            IndexedQuaternion frame2rot = new IndexedQuaternion(pframe2rot.X, pframe2rot.Y, pframe2rot.Z, pframe2rot.W);
+            IndexedMatrix frame2 = IndexedMatrix.CreateFromQuaternion(frame2rot);
+            frame2._origin = frame1v;
+
+            constrain = new ConeTwistConstraint(rb1, rb2, ref frame1, ref frame2);
+            world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);
+        }
+        return new BulletConstraintXNA(constrain);
+    }
+
+    public override BulletConstraint CreateGearConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2,
+                        Vector3 paxisInA, Vector3 paxisInB,
+                        float pratio, bool pdisableCollisionsBetweenLinkedBodies)
+    {
+        Generic6DofConstraint constrain = null;
+        /*   BulletXNA does not have a gear constraint
+        GearConstraint constrain = null;
+        DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
+        RigidBody rb1 = (pBody1 as BulletBodyXNA).rigidBody;
+        RigidBody rb2 = (pBody2 as BulletBodyXNA).rigidBody;
+        if (rb1 != null && rb2 != null)
+        {
+            IndexedVector3 axis1 = new IndexedVector3(paxisInA.X, paxisInA.Y, paxisInA.Z);
+            IndexedVector3 axis2 = new IndexedVector3(paxisInB.X, paxisInB.Y, paxisInB.Z);
+            constrain = new GearConstraint(rb1, rb2, ref axis1, ref axis2, pratio);
+            world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);
+        }
+        */
+        return new BulletConstraintXNA(constrain);
+    }
+
+    public override BulletConstraint CreatePoint2PointConstraint(BulletWorld pWorld, BulletBody pBody1, BulletBody pBody2,
+                        Vector3 ppivotInA, Vector3 ppivotInB,
+                        bool pdisableCollisionsBetweenLinkedBodies)
+    {
+        Point2PointConstraint constrain = null;
+        DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
+        RigidBody rb1 = (pBody1 as BulletBodyXNA).rigidBody;
+        RigidBody rb2 = (pBody2 as BulletBodyXNA).rigidBody;
+        if (rb1 != null && rb2 != null)
+        {
+            IndexedVector3 pivotInA = new IndexedVector3(ppivotInA.X, ppivotInA.Y, ppivotInA.Z);
+            IndexedVector3 pivotInB = new IndexedVector3(ppivotInB.X, ppivotInB.Y, ppivotInB.Z);
+            constrain = new Point2PointConstraint(rb1, rb2, ref pivotInA, ref pivotInB);
             world.AddConstraint(constrain, pdisableCollisionsBetweenLinkedBodies);
         }
         return new BulletConstraintXNA(constrain);
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs b/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs
index 3f83ef0..5765b0d 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSApiTemplate.cs
@@ -365,11 +365,38 @@ public abstract BulletConstraint Create6DofConstraintToPoint(BulletWorld world,
                     Vector3 joinPoint,
                     bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
 
+public abstract BulletConstraint Create6DofConstraintFixed(BulletWorld world, BulletBody obj1,
+                    Vector3 frameInBloc, Quaternion frameInBrot, 
+                    bool useLinearReferenceFrameB, bool disableCollisionsBetweenLinkedBodies);
+
+public abstract BulletConstraint Create6DofSpringConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 frame1loc, Quaternion frame1rot,
+                    Vector3 frame2loc, Quaternion frame2rot,
+                    bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
+
 public abstract BulletConstraint CreateHingeConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
                     Vector3 pivotinA, Vector3 pivotinB,
                     Vector3 axisInA, Vector3 axisInB,
                     bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
 
+public abstract BulletConstraint CreateSliderConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 frameInAloc, Quaternion frameInArot,
+                    Vector3 frameInBloc, Quaternion frameInBrot,
+                    bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies);
+
+public abstract BulletConstraint CreateConeTwistConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 frameInAloc, Quaternion frameInArot,
+                    Vector3 frameInBloc, Quaternion frameInBrot,
+                    bool disableCollisionsBetweenLinkedBodies);
+
+public abstract BulletConstraint CreateGearConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 axisInA, Vector3 axisInB,
+                    float ratio, bool disableCollisionsBetweenLinkedBodies);
+
+public abstract BulletConstraint CreatePoint2PointConstraint(BulletWorld world, BulletBody obj1, BulletBody obj2,
+                    Vector3 pivotInA, Vector3 pivotInB,
+                    bool disableCollisionsBetweenLinkedBodies);
+
 public abstract void SetConstraintEnable(BulletConstraint constrain, float numericTrueFalse);
 
 public abstract void SetConstraintNumSolverIterations(BulletConstraint constrain, float iterations);
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
index 8dca7c6..1f186c3 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
@@ -443,6 +443,7 @@ public sealed class BSCharacter : BSPhysObject
             PhysicsScene.TaintedObject("BSCharacter.setPosition", delegate()
             {
                 DetailLog("{0},BSCharacter.SetPosition,taint,pos={1},orient={2}", LocalID, _position, _orientation);
+                PositionSanityCheck();
                 ForcePosition = _position;
             });
         }
@@ -456,7 +457,6 @@ public sealed class BSCharacter : BSPhysObject
             _position = value;
             if (PhysBody.HasPhysicalBody)
             {
-                PositionSanityCheck();
                 PhysicsScene.PE.SetTranslation(PhysBody, _position, _orientation);
             }
         }
@@ -512,9 +512,8 @@ public sealed class BSCharacter : BSPhysObject
             //    just assign to "Position" because of potential call loops.
             PhysicsScene.TaintedObject(inTaintTime, "BSCharacter.PositionSanityCheck", delegate()
             {
-                DetailLog("{0},BSCharacter.PositionSanityCheck,taint,pos={1},orient={2}", LocalID, _position, _orientation);
-                if (PhysBody.HasPhysicalBody)
-                    PhysicsScene.PE.SetTranslation(PhysBody, _position, _orientation);
+                DetailLog("{0},BSCharacter.PositionSanityCheck,taint,pos={1},orient={2}", LocalID, _position, _orientation);

+                ForcePosition = _position;
             });
             ret = true;
         }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint6Dof.cs b/OpenSim/Region/Physics/BulletSPlugin/BSConstraint6Dof.cs
index ecb1b32..476a0e5 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraint6Dof.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSConstraint6Dof.cs
@@ -57,6 +57,7 @@ public sealed class BSConstraint6Dof : BSConstraint
                             obj1.ID, obj1.AddrString, obj2.ID, obj2.AddrString);
     }
 
+    // 6 Dof constraint based on a midpoint between the two constrained bodies
     public BSConstraint6Dof(BulletWorld world, BulletBody obj1, BulletBody obj2,
                     Vector3 joinPoint,
                     bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies)
@@ -94,6 +95,21 @@ public sealed class BSConstraint6Dof : BSConstraint
         }
     }
 
+    // A 6 Dof constraint that is fixed in the world and constrained to a on-the-fly created static object
+    public BSConstraint6Dof(BulletWorld world, BulletBody obj1, Vector3 frameInBloc, Quaternion frameInBrot,
+                    bool useLinearReferenceFrameA, bool disableCollisionsBetweenLinkedBodies)
+        : base(world)
+    {
+        m_body1 = obj1;
+        m_body2 = obj1; // Look out for confusion down the road
+        m_constraint = PhysicsScene.PE.Create6DofConstraintFixed(m_world, m_body1,
+                                frameInBloc, frameInBrot,
+                                useLinearReferenceFrameA, disableCollisionsBetweenLinkedBodies);
+        m_enabled = true;
+        world.physicsScene.DetailLog("{0},BS6DofConstraint,createFixed,wID={1},rID={2},rBody={3}",
+                            BSScene.DetailLogZero, world.worldID, obj1.ID, obj1.AddrString);
+    }
+
     public bool SetFrames(Vector3 frameA, Quaternion frameArot, Vector3 frameB, Quaternion frameBrot)
     {
         bool ret = false;
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs b/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs
index 2aeff25..5c8d94e 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSConstraintCollection.cs
@@ -117,8 +117,7 @@ public sealed class BSConstraintCollection : IDisposable
             if (this.TryGetConstraint(body1, body2, out constrain))
             {
                 // remove the constraint from our collection
-                RemoveAndDestroyConstraint(constrain);
-                ret = true;
+                ret = RemoveAndDestroyConstraint(constrain);
             }
         }
 
@@ -126,17 +125,19 @@ public sealed class BSConstraintCollection : IDisposable
     }
 
     // The constraint MUST exist in the collection
+    // Could be called if the constraint was previously removed.
+    // Return 'true' if the constraint was actually removed and disposed.
     public bool RemoveAndDestroyConstraint(BSConstraint constrain)
     {
+        bool removed = false;
         lock (m_constraints)
         {
             // remove the constraint from our collection
-            m_constraints.Remove(constrain);
+            removed = m_constraints.Remove(constrain);
         }
-        // tell the engine that all its structures need to be freed
+        // Dispose() is safe to call multiple times
         constrain.Dispose();
-        // we destroyed something
-        return true;
+        return removed;
     }
 
     // Remove all constraints that reference the passed body.
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
index 41d353a..e6933f9 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSDynamics.cs
@@ -144,7 +144,7 @@ namespace OpenSim.Region.Physics.BulletSPlugin
             enableAngularVerticalAttraction = true;
             enableAngularDeflection = false;
             enableAngularBanking = false;
-            if (BSParam.VehicleDebuggingEnabled != ConfigurationParameters.numericFalse)
+            if (BSParam.VehicleDebuggingEnabled)
             {
                 enableAngularVerticalAttraction = true;
                 enableAngularDeflection = false;
@@ -607,8 +607,8 @@ namespace OpenSim.Region.Physics.BulletSPlugin
                 // TODO: possibly set AngularFactor and LinearFactor for the type of vehicle.
                 //     Maybe compute linear and angular factor and damping from params.
                 PhysicsScene.PE.SetAngularDamping(Prim.PhysBody, BSParam.VehicleAngularDamping);
-                PhysicsScene.PE.SetLinearFactor(Prim.PhysBody, BSParam.VehicleLinearFactorV);
-                PhysicsScene.PE.SetAngularFactorV(Prim.PhysBody, BSParam.VehicleAngularFactorV);
+                PhysicsScene.PE.SetLinearFactor(Prim.PhysBody, BSParam.VehicleLinearFactor);
+                PhysicsScene.PE.SetAngularFactorV(Prim.PhysBody, BSParam.VehicleAngularFactor);
 
                 // Vehicles report collision events so we know when it's on the ground
                 PhysicsScene.PE.AddToCollisionFlags(Prim.PhysBody, CollisionFlags.BS_VEHICLE_COLLISIONS);
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs
index 4ce58c7..e05562a 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetCompound.cs
@@ -485,8 +485,8 @@ public sealed class BSLinksetCompound : BSLinkset
                         }
                         OMV.Vector3 offsetPos = (cPrim.RawPosition - LinksetRoot.RawPosition) * invRootOrientation - centerDisplacement;
                         OMV.Quaternion offsetRot = cPrim.RawOrientation * invRootOrientation;
-                        PhysicsScene.PE.AddChildShapeToCompoundShape(LinksetRoot.PhysShape, cPrim.PhysShape, offsetPos, offsetRot);

-                        DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,addNonNative,indx={1},rShape={2},cShape={3},offPos={4},offRot={5}",

+                        PhysicsScene.PE.AddChildShapeToCompoundShape(LinksetRoot.PhysShape, cPrim.PhysShape, offsetPos, offsetRot);
+                        DetailLog("{0},BSLinksetCompound.RecomputeLinksetCompound,addNonNative,indx={1},rShape={2},cShape={3},offPos={4},offRot={5}",
                                     LinksetRoot.LocalID, memberIndex, LinksetRoot.PhysShape, cPrim.PhysShape, offsetPos, offsetRot);
 
                     }
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs
index cc814d1..6d252ca 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSLinksetConstraints.cs
@@ -223,8 +223,8 @@ public sealed class BSLinksetConstraints : BSLinkset
         constrain.SetAngularLimits(OMV.Vector3.Zero, OMV.Vector3.Zero);
 
         // tweek the constraint to increase stability
-        constrain.UseFrameOffset(BSParam.BoolNumeric(BSParam.LinkConstraintUseFrameOffset));
-        constrain.TranslationalLimitMotor(BSParam.BoolNumeric(BSParam.LinkConstraintEnableTransMotor),
+        constrain.UseFrameOffset(BSParam.LinkConstraintUseFrameOffset);
+        constrain.TranslationalLimitMotor(BSParam.LinkConstraintEnableTransMotor,
                         BSParam.LinkConstraintTransMotorMaxVel,
                         BSParam.LinkConstraintTransMotorMaxForce);
         constrain.SetCFMAndERP(BSParam.LinkConstraintCFM, BSParam.LinkConstraintERP);
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
index 329169f..dc57b67 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
@@ -37,6 +37,8 @@ namespace OpenSim.Region.Physics.BulletSPlugin
 {
 public static class BSParam
 {
+    private static string LogHeader = "[BULLETSIM PARAMETERS]"; 
+
     // Level of Detail values kept as float because that's what the Meshmerizer wants
     public static float MeshLOD { get; private set; }
     public static float MeshCircularLOD { get; private set; }
@@ -44,6 +46,8 @@ public static class BSParam
     public static float MeshMegaPrimThreshold { get; private set; }
     public static float SculptLOD { get; private set; }
 
+    public static int CrossingFailuresBeforeOutOfBounds { get; private set; }
+
     public static float MinimumObjectMass { get; private set; }
     public static float MaximumObjectMass { get; private set; }
     public static float MaxLinearVelocity { get; private set; }
@@ -71,24 +75,23 @@ public static class BSParam
     public static float TerrainRestitution { get; private set; }
     public static float TerrainCollisionMargin { get; private set; }
 
-    public static float DefaultFriction;
-    public static float DefaultDensity;
-    public static float DefaultRestitution;
-    public static float CollisionMargin;
-    public static float Gravity;
+    public static float DefaultFriction { get; private set; }
+    public static float DefaultDensity { get; private set; }
+    public static float DefaultRestitution { get; private set; }
+    public static float CollisionMargin { get; private set; }
+    public static float Gravity { get; private set; }
 
     // Physics Engine operation
-        public static float MaxPersistantManifoldPoolSize;
-        public static float MaxCollisionAlgorithmPoolSize;
-        public static float ShouldDisableContactPoolDynamicAllocation;
-        public static float ShouldForceUpdateAllAabbs;
-        public static float ShouldRandomizeSolverOrder;
-        public static float ShouldSplitSimulationIslands;
-        public static float ShouldEnableFrictionCaching;
-        public static float NumberOfSolverIterations;
-    public static bool UseSingleSidedMeshes { get { return UseSingleSidedMeshesF != ConfigurationParameters.numericFalse; } }
-    public static float UseSingleSidedMeshesF;
-    public static float GlobalContactBreakingThreshold;
+        public static float MaxPersistantManifoldPoolSize { get; private set; }
+        public static float MaxCollisionAlgorithmPoolSize { get; private set; }
+        public static bool ShouldDisableContactPoolDynamicAllocation { get; private set; }
+        public static bool ShouldForceUpdateAllAabbs { get; private set; }
+        public static bool ShouldRandomizeSolverOrder { get; private set; }
+        public static bool ShouldSplitSimulationIslands { get; private set; }
+        public static bool ShouldEnableFrictionCaching { get; private set; }
+        public static float NumberOfSolverIterations { get; private set; }
+    public static bool UseSingleSidedMeshes { get; private set; }
+    public static float GlobalContactBreakingThreshold { get; private set; }
 
     // Avatar parameters
     public static float AvatarFriction { get; private set; }
@@ -112,16 +115,15 @@ public static class BSParam
     public static float VehicleAngularDamping { get; private set; }
     public static float VehicleFriction { get; private set; }
     public static float VehicleRestitution { get; private set; }
-    public static float VehicleLinearFactor { get; private set; }
-    public static Vector3 VehicleLinearFactorV { get; private set; }
-    public static float VehicleAngularFactor { get; private set; }
-    public static Vector3 VehicleAngularFactorV { get; private set; }
+    public static Vector3 VehicleLinearFactor { get; private set; }
+    public static Vector3 VehicleAngularFactor { get; private set; }
     public static float VehicleGroundGravityFudge { get; private set; }
-    public static float VehicleDebuggingEnabled { get; private set; }
+    public static bool VehicleDebuggingEnabled { get; private set; }
 
+    // Linkset implementation parameters
     public static float LinksetImplementation { get; private set; }
-    public static float LinkConstraintUseFrameOffset { get; private set; }
-    public static float LinkConstraintEnableTransMotor { get; private set; }
+    public static bool LinkConstraintUseFrameOffset { get; private set; }
+    public static bool LinkConstraintEnableTransMotor { get; private set; }
     public static float LinkConstraintTransMotorMaxVel { get; private set; }
     public static float LinkConstraintTransMotorMaxForce { get; private set; }
     public static float LinkConstraintERP { get; private set; }
@@ -141,40 +143,106 @@ public static class BSParam
     public const float MinRestitution = 0f;
     public const float MaxRestitution = 1f;
 
-    // ===========================================================================
-    public delegate void ParamUser(BSScene scene, IConfig conf, string paramName, float val);
-    public delegate float ParamGet(BSScene scene);
-    public delegate void ParamSet(BSScene scene, string paramName, uint localID, float val);
-    public delegate void SetOnObject(BSScene scene, BSPhysObject obj, float val);
+    // =====================================================================================
+    // =====================================================================================
 
-    public struct ParameterDefn
+    // Base parameter definition that gets and sets parameter values via a string
+    public abstract class ParameterDefnBase
     {
         public string name;         // string name of the parameter
         public string desc;         // a short description of what the parameter means
-        public float defaultValue;  // default value if not specified anywhere else
-        public ParamUser userParam; // get the value from the configuration file
-        public ParamGet getter;     // return the current value stored for this parameter
-        public ParamSet setter;     // set the current value for this parameter
-        public SetOnObject onObject;    // set the value on an object in the physical domain
-        public ParameterDefn(string n, string d, float v, ParamUser u, ParamGet g, ParamSet s)
+        public ParameterDefnBase(string pName, string pDesc)
+        {
+            name = pName;
+            desc = pDesc;
+        }
+        // Set the parameter value to the default
+        public abstract void AssignDefault(BSScene s);
+        // Get the value as a string
+        public abstract string GetValue(BSScene s);
+        // Set the value to this string value
+        public abstract void SetValue(BSScene s, string valAsString);
+        // set the value on a particular object (usually sets in physics engine)
+        public abstract void SetOnObject(BSScene s, BSPhysObject obj);
+        public abstract bool HasSetOnObject { get; }
+    }
+
+    // Specific parameter definition for a parameter of a specific type.
+    public delegate T PGetValue<T>(BSScene s);
+    public delegate void PSetValue<T>(BSScene s, T val);
+    public delegate void PSetOnObject<T>(BSScene scene, BSPhysObject obj);
+    public sealed class ParameterDefn<T> : ParameterDefnBase
+    {
+        T defaultValue;
+        PSetValue<T> setter;
+        PGetValue<T> getter;
+        PSetOnObject<T> objectSet;
+        public ParameterDefn(string pName, string pDesc, T pDefault, PGetValue<T> pGetter, PSetValue<T> pSetter)
+            : base(pName, pDesc)
         {
-            name = n;
-            desc = d;
-            defaultValue = v;
-            userParam = u;
-            getter = g;
-            setter = s;
-            onObject = null;
+            defaultValue = pDefault;
+            setter = pSetter;
+            getter = pGetter;
+            objectSet = null;
         }
-        public ParameterDefn(string n, string d, float v, ParamUser u, ParamGet g, ParamSet s, SetOnObject o)
+        public ParameterDefn(string pName, string pDesc, T pDefault, PGetValue<T> pGetter, PSetValue<T> pSetter, PSetOnObject<T> pObjSetter)
+            : base(pName, pDesc)
         {
-            name = n;
-            desc = d;
-            defaultValue = v;
-            userParam = u;
-            getter = g;
-            setter = s;
-            onObject = o;
+            defaultValue = pDefault;
+            setter = pSetter;
+            getter = pGetter;
+            objectSet = pObjSetter;
+        }
+        public override void AssignDefault(BSScene s)
+        {
+            setter(s, defaultValue);
+        }
+        public override string GetValue(BSScene s)
+        {
+            return String.Format("{0}", getter(s));
+        }
+        public override void SetValue(BSScene s, string valAsString)
+        {
+            // Get the generic type of the setter
+            Type genericType = setter.GetType().GetGenericArguments()[0];
+            // Find the 'Parse' method on that type
+            System.Reflection.MethodInfo parser = null;
+            try
+            {
+                parser = genericType.GetMethod("Parse", new Type[] { typeof(String) } );
+            }
+            catch (Exception e)
+            {
+                s.Logger.ErrorFormat("{0} Exception getting parser for type '{1}': {2}", LogHeader, genericType, e);
+                parser = null;
+            }
+            if (parser != null)
+            {
+                // Parse the input string
+                try
+                {
+                    T setValue = (T)parser.Invoke(genericType, new Object[] { valAsString });
+                    setter(s, setValue);
+                    // s.Logger.DebugFormat("{0} Parameter {1} = {2}", LogHeader, name, setValue);
+                }
+                catch
+                {
+                    s.Logger.ErrorFormat("{0} Failed parsing parameter value '{1}' as type '{2}'", LogHeader, valAsString, genericType);
+                }
+            }
+            else
+            {
+                s.Logger.ErrorFormat("{0} Could not find parameter parser for type '{1}'", LogHeader, genericType);
+            }
+        }
+        public override bool HasSetOnObject
+        {
+            get { return objectSet != null; }
+        }
+        public override void SetOnObject(BSScene s, BSPhysObject obj)
+        {
+            if (objectSet != null)
+                objectSet(s, obj);
         }
     }
 
@@ -184,462 +252,380 @@ public static class BSParam
     //    location somewhere in the program and make an entry in this table with the
     //    getters and setters.
     // It is easiest to find an existing definition and copy it.
-    // Parameter values are floats. Booleans are converted to a floating value.
     //
-    // A ParameterDefn() takes the following parameters:
+    // A ParameterDefn<T>() takes the following parameters:
     //    -- the text name of the parameter. This is used for console input and ini file.
     //    -- a short text description of the parameter. This shows up in the console listing.
-    //    -- a default value (float)
-    //    -- a delegate for fetching the parameter from the ini file.
-    //          Should handle fetching the right type from the ini file and converting it.
-    //    -- a delegate for getting the value as a float
-    //    -- a delegate for setting the value from a float
+    //    -- a default value
+    //    -- a delegate for getting the value
+    //    -- a delegate for setting the value
     //    -- an optional delegate to update the value in the world. Most often used to
     //          push the new value to an in-world object.
     //
     // The single letter parameters for the delegates are:
     //    s = BSScene
     //    o = BSPhysObject
-    //    p = string parameter name
-    //    l = localID of referenced object
     //    v = value (float)
-    //    cf = parameter configuration class (for fetching values from ini file)
-    private static ParameterDefn[] ParameterDefinitions =
+    private static ParameterDefnBase[] ParameterDefinitions =
     {
-        new ParameterDefn("MeshSculptedPrim", "Whether to create meshes for sculpties",
-            ConfigurationParameters.numericTrue,
-            (s,cf,p,v) => { ShouldMeshSculptedPrim = cf.GetBoolean(p, BSParam.BoolNumeric(v)); },
-            (s) => { return BSParam.NumericBool(ShouldMeshSculptedPrim); },
-            (s,p,l,v) => { ShouldMeshSculptedPrim = BSParam.BoolNumeric(v); } ),
-        new ParameterDefn("ForceSimplePrimMeshing", "If true, only use primitive meshes for objects",
-            ConfigurationParameters.numericFalse,
-            (s,cf,p,v) => { ShouldForceSimplePrimMeshing = cf.GetBoolean(p, BSParam.BoolNumeric(v)); },
-            (s) => { return BSParam.NumericBool(ShouldForceSimplePrimMeshing); },
-            (s,p,l,v) => { ShouldForceSimplePrimMeshing = BSParam.BoolNumeric(v); } ),
-        new ParameterDefn("UseHullsForPhysicalObjects", "If true, create hulls for physical objects",
-            ConfigurationParameters.numericTrue,
-            (s,cf,p,v) => { ShouldUseHullsForPhysicalObjects = cf.GetBoolean(p, BSParam.BoolNumeric(v)); },
-            (s) => { return BSParam.NumericBool(ShouldUseHullsForPhysicalObjects); },
-            (s,p,l,v) => { ShouldUseHullsForPhysicalObjects = BSParam.BoolNumeric(v); } ),
-        new ParameterDefn("ShouldRemoveZeroWidthTriangles", "If true, remove degenerate triangles from meshes",
-            ConfigurationParameters.numericTrue,
-            (s,cf,p,v) => { ShouldRemoveZeroWidthTriangles = cf.GetBoolean(p, BSParam.BoolNumeric(v)); },
-            (s) => { return BSParam.NumericBool(ShouldRemoveZeroWidthTriangles); },
-            (s,p,l,v) => { ShouldRemoveZeroWidthTriangles = BSParam.BoolNumeric(v); } ),
-
-        new ParameterDefn("MeshLevelOfDetail", "Level of detail to render meshes (32, 16, 8 or 4. 32=most detailed)",
+        new ParameterDefn<bool>("MeshSculptedPrim", "Whether to create meshes for sculpties",
+            true,
+            (s) => { return ShouldMeshSculptedPrim; },
+            (s,v) => { ShouldMeshSculptedPrim = v; } ),
+        new ParameterDefn<bool>("ForceSimplePrimMeshing", "If true, only use primitive meshes for objects",
+            false,
+            (s) => { return ShouldForceSimplePrimMeshing; },
+            (s,v) => { ShouldForceSimplePrimMeshing = v; } ),
+        new ParameterDefn<bool>("UseHullsForPhysicalObjects", "If true, create hulls for physical objects",
+            true,
+            (s) => { return ShouldUseHullsForPhysicalObjects; },
+            (s,v) => { ShouldUseHullsForPhysicalObjects = v; } ),
+        new ParameterDefn<bool>("ShouldRemoveZeroWidthTriangles", "If true, remove degenerate triangles from meshes",
+            true,
+            (s) => { return ShouldRemoveZeroWidthTriangles; },
+            (s,v) => { ShouldRemoveZeroWidthTriangles = v; } ),
+
+        new ParameterDefn<int>("CrossingFailuresBeforeOutOfBounds", "How forgiving we are about getting into adjactent regions",
+            5,
+            (s) => { return CrossingFailuresBeforeOutOfBounds; },
+            (s,v) => { CrossingFailuresBeforeOutOfBounds = v; } ),
+
+        new ParameterDefn<float>("MeshLevelOfDetail", "Level of detail to render meshes (32, 16, 8 or 4. 32=most detailed)",
             32f,
-            (s,cf,p,v) => { MeshLOD = (float)cf.GetInt(p, (int)v); },
             (s) => { return MeshLOD; },
-            (s,p,l,v) => { MeshLOD = v; } ),
-        new ParameterDefn("MeshLevelOfDetailCircular", "Level of detail for prims with circular cuts or shapes",
+            (s,v) => { MeshLOD = v; } ),
+        new ParameterDefn<float>("MeshLevelOfDetailCircular", "Level of detail for prims with circular cuts or shapes",
             32f,
-            (s,cf,p,v) => { MeshCircularLOD = (float)cf.GetInt(p, (int)v); },
             (s) => { return MeshCircularLOD; },
-            (s,p,l,v) => { MeshCircularLOD = v; } ),
-        new ParameterDefn("MeshLevelOfDetailMegaPrimThreshold", "Size (in meters) of a mesh before using MeshMegaPrimLOD",
+            (s,v) => { MeshCircularLOD = v; } ),
+        new ParameterDefn<float>("MeshLevelOfDetailMegaPrimThreshold", "Size (in meters) of a mesh before using MeshMegaPrimLOD",
             10f,
-            (s,cf,p,v) => { MeshMegaPrimThreshold = (float)cf.GetInt(p, (int)v); },
             (s) => { return MeshMegaPrimThreshold; },
-            (s,p,l,v) => { MeshMegaPrimThreshold = v; } ),
-        new ParameterDefn("MeshLevelOfDetailMegaPrim", "Level of detail to render meshes larger than threshold meters",
+            (s,v) => { MeshMegaPrimThreshold = v; } ),
+        new ParameterDefn<float>("MeshLevelOfDetailMegaPrim", "Level of detail to render meshes larger than threshold meters",
             32f,
-            (s,cf,p,v) => { MeshMegaPrimLOD = (float)cf.GetInt(p, (int)v); },
             (s) => { return MeshMegaPrimLOD; },
-            (s,p,l,v) => { MeshMegaPrimLOD = v; } ),
-        new ParameterDefn("SculptLevelOfDetail", "Level of detail to render sculpties (32, 16, 8 or 4. 32=most detailed)",
+            (s,v) => { MeshMegaPrimLOD = v; } ),
+        new ParameterDefn<float>("SculptLevelOfDetail", "Level of detail to render sculpties (32, 16, 8 or 4. 32=most detailed)",
             32f,
-            (s,cf,p,v) => { SculptLOD = (float)cf.GetInt(p, (int)v); },
             (s) => { return SculptLOD; },
-            (s,p,l,v) => { SculptLOD = v; } ),
+            (s,v) => { SculptLOD = v; } ),
 
-        new ParameterDefn("MaxSubStep", "In simulation step, maximum number of substeps",
-            10f,
-            (s,cf,p,v) => { s.m_maxSubSteps = cf.GetInt(p, (int)v); },
-            (s) => { return (float)s.m_maxSubSteps; },
-            (s,p,l,v) => { s.m_maxSubSteps = (int)v; } ),
-        new ParameterDefn("FixedTimeStep", "In simulation step, seconds of one substep (1/60)",
+        new ParameterDefn<int>("MaxSubStep", "In simulation step, maximum number of substeps",
+            10,
+            (s) => { return s.m_maxSubSteps; },
+            (s,v) => { s.m_maxSubSteps = (int)v; } ),
+        new ParameterDefn<float>("FixedTimeStep", "In simulation step, seconds of one substep (1/60)",
             1f / 60f,
-            (s,cf,p,v) => { s.m_fixedTimeStep = cf.GetFloat(p, v); },
-            (s) => { return (float)s.m_fixedTimeStep; },
-            (s,p,l,v) => { s.m_fixedTimeStep = v; } ),
-        new ParameterDefn("NominalFrameRate", "The base frame rate we claim",
+            (s) => { return s.m_fixedTimeStep; },
+            (s,v) => { s.m_fixedTimeStep = v; } ),
+        new ParameterDefn<float>("NominalFrameRate", "The base frame rate we claim",
             55f,
-            (s,cf,p,v) => { s.NominalFrameRate = cf.GetInt(p, (int)v); },
-            (s) => { return (float)s.NominalFrameRate; },
-            (s,p,l,v) => { s.NominalFrameRate = (int)v; } ),
-        new ParameterDefn("MaxCollisionsPerFrame", "Max collisions returned at end of each frame",
-            2048f,
-            (s,cf,p,v) => { s.m_maxCollisionsPerFrame = cf.GetInt(p, (int)v); },
-            (s) => { return (float)s.m_maxCollisionsPerFrame; },
-            (s,p,l,v) => { s.m_maxCollisionsPerFrame = (int)v; } ),
-        new ParameterDefn("MaxUpdatesPerFrame", "Max updates returned at end of each frame",
-            8000f,
-            (s,cf,p,v) => { s.m_maxUpdatesPerFrame = cf.GetInt(p, (int)v); },
-            (s) => { return (float)s.m_maxUpdatesPerFrame; },
-            (s,p,l,v) => { s.m_maxUpdatesPerFrame = (int)v; } ),
-
-        new ParameterDefn("MinObjectMass", "Minimum object mass (0.0001)",
+            (s) => { return s.NominalFrameRate; },
+            (s,v) => { s.NominalFrameRate = (int)v; } ),
+        new ParameterDefn<int>("MaxCollisionsPerFrame", "Max collisions returned at end of each frame",
+            2048,
+            (s) => { return s.m_maxCollisionsPerFrame; },
+            (s,v) => { s.m_maxCollisionsPerFrame = (int)v; } ),
+        new ParameterDefn<int>("MaxUpdatesPerFrame", "Max updates returned at end of each frame",
+            8000,
+            (s) => { return s.m_maxUpdatesPerFrame; },
+            (s,v) => { s.m_maxUpdatesPerFrame = (int)v; } ),
+
+        new ParameterDefn<float>("MinObjectMass", "Minimum object mass (0.0001)",
             0.0001f,
-            (s,cf,p,v) => { MinimumObjectMass = cf.GetFloat(p, v); },
             (s) => { return MinimumObjectMass; },
-            (s,p,l,v) => { MinimumObjectMass = v; } ),
-        new ParameterDefn("MaxObjectMass", "Maximum object mass (10000.01)",
+            (s,v) => { MinimumObjectMass = v; } ),
+        new ParameterDefn<float>("MaxObjectMass", "Maximum object mass (10000.01)",
             10000.01f,
-            (s,cf,p,v) => { MaximumObjectMass = cf.GetFloat(p, v); },
             (s) => { return MaximumObjectMass; },
-            (s,p,l,v) => { MaximumObjectMass = v; } ),
-        new ParameterDefn("MaxLinearVelocity", "Maximum velocity magnitude that can be assigned to an object",
+            (s,v) => { MaximumObjectMass = v; } ),
+        new ParameterDefn<float>("MaxLinearVelocity", "Maximum velocity magnitude that can be assigned to an object",
             1000.0f,
-            (s,cf,p,v) => { MaxLinearVelocity = cf.GetFloat(p, v); },
             (s) => { return MaxLinearVelocity; },
-            (s,p,l,v) => { MaxLinearVelocity = v; } ),
-        new ParameterDefn("MaxAngularVelocity", "Maximum rotational velocity magnitude that can be assigned to an object",
+            (s,v) => { MaxLinearVelocity = v; } ),
+        new ParameterDefn<float>("MaxAngularVelocity", "Maximum rotational velocity magnitude that can be assigned to an object",
             1000.0f,
-            (s,cf,p,v) => { MaxAngularVelocity = cf.GetFloat(p, v); },
             (s) => { return MaxAngularVelocity; },
-            (s,p,l,v) => { MaxAngularVelocity = v; } ),
+            (s,v) => { MaxAngularVelocity = v; } ),
         // LL documentation says thie number should be 20f for llApplyImpulse and 200f for llRezObject
-        new ParameterDefn("MaxAddForceMagnitude", "Maximum force that can be applied by llApplyImpulse (SL says 20f)",
+        new ParameterDefn<float>("MaxAddForceMagnitude", "Maximum force that can be applied by llApplyImpulse (SL says 20f)",
             20000.0f,
-            (s,cf,p,v) => { MaxAddForceMagnitude = cf.GetFloat(p, v); },
             (s) => { return MaxAddForceMagnitude; },
-            (s,p,l,v) => { MaxAddForceMagnitude = v; } ),
+            (s,v) => { MaxAddForceMagnitude = v; } ),
         // Density is passed around as 100kg/m3. This scales that to 1kg/m3.
-        new ParameterDefn("DensityScaleFactor", "Conversion for simulator/viewer density (100kg/m3) to physical density (1kg/m3)",
+        new ParameterDefn<float>("DensityScaleFactor", "Conversion for simulator/viewer density (100kg/m3) to physical density (1kg/m3)",
             0.01f,
-            (s,cf,p,v) => { DensityScaleFactor = cf.GetFloat(p, v); },
             (s) => { return DensityScaleFactor; },
-            (s,p,l,v) => { DensityScaleFactor = v; } ),
+            (s,v) => { DensityScaleFactor = v; } ),
 
-        new ParameterDefn("PID_D", "Derivitive factor for motion smoothing",
+        new ParameterDefn<float>("PID_D", "Derivitive factor for motion smoothing",
             2200f,
-            (s,cf,p,v) => { PID_D = cf.GetFloat(p, v); },
             (s) => { return (float)PID_D; },
-            (s,p,l,v) => { PID_D = v; } ),
-        new ParameterDefn("PID_P", "Parameteric factor for motion smoothing",
+            (s,v) => { PID_D = v; } ),
+        new ParameterDefn<float>("PID_P", "Parameteric factor for motion smoothing",
             900f,
-            (s,cf,p,v) => { PID_P = cf.GetFloat(p, v); },
             (s) => { return (float)PID_P; },
-            (s,p,l,v) => { PID_P = v; } ),
+            (s,v) => { PID_P = v; } ),
 
-        new ParameterDefn("DefaultFriction", "Friction factor used on new objects",
+        new ParameterDefn<float>("DefaultFriction", "Friction factor used on new objects",
             0.2f,
-            (s,cf,p,v) => { DefaultFriction = cf.GetFloat(p, v); },
             (s) => { return DefaultFriction; },
-            (s,p,l,v) => { DefaultFriction = v; s.UnmanagedParams[0].defaultFriction = v; } ),
-        new ParameterDefn("DefaultDensity", "Density for new objects" ,
+            (s,v) => { DefaultFriction = v; s.UnmanagedParams[0].defaultFriction = v; } ),
+        new ParameterDefn<float>("DefaultDensity", "Density for new objects" ,
             10.000006836f,  // Aluminum g/cm3
-            (s,cf,p,v) => { DefaultDensity = cf.GetFloat(p, v); },
             (s) => { return DefaultDensity; },
-            (s,p,l,v) => { DefaultDensity = v; s.UnmanagedParams[0].defaultDensity = v; } ),
-        new ParameterDefn("DefaultRestitution", "Bouncyness of an object" ,
+            (s,v) => { DefaultDensity = v; s.UnmanagedParams[0].defaultDensity = v; } ),
+        new ParameterDefn<float>("DefaultRestitution", "Bouncyness of an object" ,
             0f,
-            (s,cf,p,v) => { DefaultRestitution = cf.GetFloat(p, v); },
             (s) => { return DefaultRestitution; },
-            (s,p,l,v) => { DefaultRestitution = v; s.UnmanagedParams[0].defaultRestitution = v; } ),
-        new ParameterDefn("CollisionMargin", "Margin around objects before collisions are calculated (must be zero!)",
+            (s,v) => { DefaultRestitution = v; s.UnmanagedParams[0].defaultRestitution = v; } ),
+        new ParameterDefn<float>("CollisionMargin", "Margin around objects before collisions are calculated (must be zero!)",
             0.04f,
-            (s,cf,p,v) => { CollisionMargin = cf.GetFloat(p, v); },
             (s) => { return CollisionMargin; },
-            (s,p,l,v) => { CollisionMargin = v; s.UnmanagedParams[0].collisionMargin = v; } ),
-        new ParameterDefn("Gravity", "Vertical force of gravity (negative means down)",
+            (s,v) => { CollisionMargin = v; s.UnmanagedParams[0].collisionMargin = v; } ),
+        new ParameterDefn<float>("Gravity", "Vertical force of gravity (negative means down)",
             -9.80665f,
-            (s,cf,p,v) => { Gravity = cf.GetFloat(p, v); },
             (s) => { return Gravity; },
-            (s,p,l,v) => { Gravity = v; s.UnmanagedParams[0].gravity = v; },
-            (s,o,v) => { s.PE.SetGravity(o.PhysBody, new Vector3(0f,0f,v)); } ),
+            (s,v) => { Gravity = v; s.UnmanagedParams[0].gravity = v; },
+            (s,o) => { s.PE.SetGravity(o.PhysBody, new Vector3(0f,0f,Gravity)); } ),
 
 
-        new ParameterDefn("LinearDamping", "Factor to damp linear movement per second (0.0 - 1.0)",
+        new ParameterDefn<float>("LinearDamping", "Factor to damp linear movement per second (0.0 - 1.0)",
             0f,
-            (s,cf,p,v) => { LinearDamping = cf.GetFloat(p, v); },
             (s) => { return LinearDamping; },
-            (s,p,l,v) => { LinearDamping = v; },
-            (s,o,v) => { s.PE.SetDamping(o.PhysBody, v, AngularDamping); } ),
-        new ParameterDefn("AngularDamping", "Factor to damp angular movement per second (0.0 - 1.0)",
+            (s,v) => { LinearDamping = v; },
+            (s,o) => { s.PE.SetDamping(o.PhysBody, LinearDamping, AngularDamping); } ),
+        new ParameterDefn<float>("AngularDamping", "Factor to damp angular movement per second (0.0 - 1.0)",
             0f,
-            (s,cf,p,v) => { AngularDamping = cf.GetFloat(p, v); },
             (s) => { return AngularDamping; },
-            (s,p,l,v) => { AngularDamping = v; },
-            (s,o,v) => { s.PE.SetDamping(o.PhysBody, LinearDamping, v); } ),
-        new ParameterDefn("DeactivationTime", "Seconds before considering an object potentially static",
+            (s,v) => { AngularDamping = v; },
+            (s,o) => { s.PE.SetDamping(o.PhysBody, LinearDamping, AngularDamping); } ),
+        new ParameterDefn<float>("DeactivationTime", "Seconds before considering an object potentially static",
             0.2f,
-            (s,cf,p,v) => { DeactivationTime = cf.GetFloat(p, v); },
             (s) => { return DeactivationTime; },
-            (s,p,l,v) => { DeactivationTime = v; },
-            (s,o,v) => { s.PE.SetDeactivationTime(o.PhysBody, v); } ),
-        new ParameterDefn("LinearSleepingThreshold", "Seconds to measure linear movement before considering static",
+            (s,v) => { DeactivationTime = v; },
+            (s,o) => { s.PE.SetDeactivationTime(o.PhysBody, DeactivationTime); } ),
+        new ParameterDefn<float>("LinearSleepingThreshold", "Seconds to measure linear movement before considering static",
             0.8f,
-            (s,cf,p,v) => { LinearSleepingThreshold = cf.GetFloat(p, v); },
             (s) => { return LinearSleepingThreshold; },
-            (s,p,l,v) => { LinearSleepingThreshold = v;},
-            (s,o,v) => { s.PE.SetSleepingThresholds(o.PhysBody, v, v); } ),
-        new ParameterDefn("AngularSleepingThreshold", "Seconds to measure angular movement before considering static",
+            (s,v) => { LinearSleepingThreshold = v;},
+            (s,o) => { s.PE.SetSleepingThresholds(o.PhysBody, LinearSleepingThreshold, AngularSleepingThreshold); } ),
+        new ParameterDefn<float>("AngularSleepingThreshold", "Seconds to measure angular movement before considering static",
             1.0f,
-            (s,cf,p,v) => { AngularSleepingThreshold = cf.GetFloat(p, v); },
             (s) => { return AngularSleepingThreshold; },
-            (s,p,l,v) => { AngularSleepingThreshold = v;},
-            (s,o,v) => { s.PE.SetSleepingThresholds(o.PhysBody, v, v); } ),
-        new ParameterDefn("CcdMotionThreshold", "Continuious collision detection threshold (0 means no CCD)" ,
+            (s,v) => { AngularSleepingThreshold = v;},
+            (s,o) => { s.PE.SetSleepingThresholds(o.PhysBody, LinearSleepingThreshold, AngularSleepingThreshold); } ),
+        new ParameterDefn<float>("CcdMotionThreshold", "Continuious collision detection threshold (0 means no CCD)" ,
             0.0f,     // set to zero to disable
-            (s,cf,p,v) => { CcdMotionThreshold = cf.GetFloat(p, v); },
             (s) => { return CcdMotionThreshold; },
-            (s,p,l,v) => { CcdMotionThreshold = v;},
-            (s,o,v) => { s.PE.SetCcdMotionThreshold(o.PhysBody, v); } ),
-        new ParameterDefn("CcdSweptSphereRadius", "Continuious collision detection test radius" ,
+            (s,v) => { CcdMotionThreshold = v;},
+            (s,o) => { s.PE.SetCcdMotionThreshold(o.PhysBody, CcdMotionThreshold); } ),
+        new ParameterDefn<float>("CcdSweptSphereRadius", "Continuious collision detection test radius" ,
             0.2f,
-            (s,cf,p,v) => { CcdSweptSphereRadius = cf.GetFloat(p, v); },
             (s) => { return CcdSweptSphereRadius; },
-            (s,p,l,v) => { CcdSweptSphereRadius = v;},
-            (s,o,v) => { s.PE.SetCcdSweptSphereRadius(o.PhysBody, v); } ),
-        new ParameterDefn("ContactProcessingThreshold", "Distance above which contacts can be discarded (0 means no discard)" ,
+            (s,v) => { CcdSweptSphereRadius = v;},
+            (s,o) => { s.PE.SetCcdSweptSphereRadius(o.PhysBody, CcdSweptSphereRadius); } ),
+        new ParameterDefn<float>("ContactProcessingThreshold", "Distance above which contacts can be discarded (0 means no discard)" ,
             0.0f,
-            (s,cf,p,v) => { ContactProcessingThreshold = cf.GetFloat(p, v); },
             (s) => { return ContactProcessingThreshold; },
-            (s,p,l,v) => { ContactProcessingThreshold = v;},
-            (s,o,v) => { s.PE.SetContactProcessingThreshold(o.PhysBody, v); } ),
+            (s,v) => { ContactProcessingThreshold = v;},
+            (s,o) => { s.PE.SetContactProcessingThreshold(o.PhysBody, ContactProcessingThreshold); } ),
 
-            new ParameterDefn("TerrainImplementation", "Type of shape to use for terrain (0=heightmap, 1=mesh)",
+            new ParameterDefn<float>("TerrainImplementation", "Type of shape to use for terrain (0=heightmap, 1=mesh)",
             (float)BSTerrainPhys.TerrainImplementation.Mesh,
-            (s,cf,p,v) => { TerrainImplementation = cf.GetFloat(p,v); },
             (s) => { return TerrainImplementation; },
-            (s,p,l,v) => { TerrainImplementation = v; } ),
-        new ParameterDefn("TerrainFriction", "Factor to reduce movement against terrain surface" ,
+            (s,v) => { TerrainImplementation = v; } ),
+        new ParameterDefn<float>("TerrainFriction", "Factor to reduce movement against terrain surface" ,
             0.3f,
-            (s,cf,p,v) => { TerrainFriction = cf.GetFloat(p, v); },
             (s) => { return TerrainFriction; },
-            (s,p,l,v) => { TerrainFriction = v;  /* TODO: set on real terrain */} ),
-        new ParameterDefn("TerrainHitFraction", "Distance to measure hit collisions" ,
+            (s,v) => { TerrainFriction = v;  /* TODO: set on real terrain */} ),
+        new ParameterDefn<float>("TerrainHitFraction", "Distance to measure hit collisions" ,
             0.8f,
-            (s,cf,p,v) => { TerrainHitFraction = cf.GetFloat(p, v); },
             (s) => { return TerrainHitFraction; },
-            (s,p,l,v) => { TerrainHitFraction = v; /* TODO: set on real terrain */ } ),
-        new ParameterDefn("TerrainRestitution", "Bouncyness" ,
+            (s,v) => { TerrainHitFraction = v; /* TODO: set on real terrain */ } ),
+        new ParameterDefn<float>("TerrainRestitution", "Bouncyness" ,
             0f,
-            (s,cf,p,v) => { TerrainRestitution = cf.GetFloat(p, v); },
             (s) => { return TerrainRestitution; },
-            (s,p,l,v) => { TerrainRestitution = v;  /* TODO: set on real terrain */ } ),
-        new ParameterDefn("TerrainCollisionMargin", "Margin where collision checking starts" ,
+            (s,v) => { TerrainRestitution = v;  /* TODO: set on real terrain */ } ),
+        new ParameterDefn<float>("TerrainCollisionMargin", "Margin where collision checking starts" ,
             0.08f,
-            (s,cf,p,v) => { TerrainCollisionMargin = cf.GetFloat(p, v); },
             (s) => { return TerrainCollisionMargin; },
-            (s,p,l,v) => { TerrainCollisionMargin = v;  /* TODO: set on real terrain */ } ),
+            (s,v) => { TerrainCollisionMargin = v;  /* TODO: set on real terrain */ } ),
 
-        new ParameterDefn("AvatarFriction", "Factor to reduce movement against an avatar. Changed on avatar recreation.",
+        new ParameterDefn<float>("AvatarFriction", "Factor to reduce movement against an avatar. Changed on avatar recreation.",
             0.2f,
-            (s,cf,p,v) => { AvatarFriction = cf.GetFloat(p, v); },
             (s) => { return AvatarFriction; },
-            (s,p,l,v) => { AvatarFriction = v; } ),
-        new ParameterDefn("AvatarStandingFriction", "Avatar friction when standing. Changed on avatar recreation.",
+            (s,v) => { AvatarFriction = v; } ),
+        new ParameterDefn<float>("AvatarStandingFriction", "Avatar friction when standing. Changed on avatar recreation.",
             0.95f,
-            (s,cf,p,v) => { AvatarStandingFriction = cf.GetFloat(p, v); },
             (s) => { return AvatarStandingFriction; },
-            (s,p,l,v) => { AvatarStandingFriction = v; } ),
-        new ParameterDefn("AvatarAlwaysRunFactor", "Speed multiplier if avatar is set to always run",
+            (s,v) => { AvatarStandingFriction = v; } ),
+        new ParameterDefn<float>("AvatarAlwaysRunFactor", "Speed multiplier if avatar is set to always run",
             1.3f,
-            (s,cf,p,v) => { AvatarAlwaysRunFactor = cf.GetFloat(p, v); },
             (s) => { return AvatarAlwaysRunFactor; },
-            (s,p,l,v) => { AvatarAlwaysRunFactor = v; } ),
-        new ParameterDefn("AvatarDensity", "Density of an avatar. Changed on avatar recreation.",
+            (s,v) => { AvatarAlwaysRunFactor = v; } ),
+        new ParameterDefn<float>("AvatarDensity", "Density of an avatar. Changed on avatar recreation.",
             3.5f,
-            (s,cf,p,v) => { AvatarDensity = cf.GetFloat(p, v); },
             (s) => { return AvatarDensity; },
-            (s,p,l,v) => { AvatarDensity = v; } ),
-        new ParameterDefn("AvatarRestitution", "Bouncyness. Changed on avatar recreation.",
+            (s,v) => { AvatarDensity = v; } ),
+        new ParameterDefn<float>("AvatarRestitution", "Bouncyness. Changed on avatar recreation.",
             0f,
-            (s,cf,p,v) => { AvatarRestitution = cf.GetFloat(p, v); },
             (s) => { return AvatarRestitution; },
-            (s,p,l,v) => { AvatarRestitution = v; } ),
-        new ParameterDefn("AvatarCapsuleWidth", "The distance between the sides of the avatar capsule",
+            (s,v) => { AvatarRestitution = v; } ),
+        new ParameterDefn<float>("AvatarCapsuleWidth", "The distance between the sides of the avatar capsule",
             0.6f,
-            (s,cf,p,v) => { AvatarCapsuleWidth = cf.GetFloat(p, v); },
             (s) => { return AvatarCapsuleWidth; },
-            (s,p,l,v) => { AvatarCapsuleWidth = v; } ),
-        new ParameterDefn("AvatarCapsuleDepth", "The distance between the front and back of the avatar capsule",
+            (s,v) => { AvatarCapsuleWidth = v; } ),
+        new ParameterDefn<float>("AvatarCapsuleDepth", "The distance between the front and back of the avatar capsule",
             0.45f,
-            (s,cf,p,v) => { AvatarCapsuleDepth = cf.GetFloat(p, v); },
             (s) => { return AvatarCapsuleDepth; },
-            (s,p,l,v) => { AvatarCapsuleDepth = v; } ),
-        new ParameterDefn("AvatarCapsuleHeight", "Default height of space around avatar",
+            (s,v) => { AvatarCapsuleDepth = v; } ),
+        new ParameterDefn<float>("AvatarCapsuleHeight", "Default height of space around avatar",
             1.5f,
-            (s,cf,p,v) => { AvatarCapsuleHeight = cf.GetFloat(p, v); },
             (s) => { return AvatarCapsuleHeight; },
-            (s,p,l,v) => { AvatarCapsuleHeight = v; } ),
-            new ParameterDefn("AvatarContactProcessingThreshold", "Distance from capsule to check for collisions",
+            (s,v) => { AvatarCapsuleHeight = v; } ),
+            new ParameterDefn<float>("AvatarContactProcessingThreshold", "Distance from capsule to check for collisions",
             0.1f,
-            (s,cf,p,v) => { AvatarContactProcessingThreshold = cf.GetFloat(p, v); },
             (s) => { return AvatarContactProcessingThreshold; },
-            (s,p,l,v) => { AvatarContactProcessingThreshold = v; } ),
-            new ParameterDefn("AvatarStepHeight", "Height of a step obstacle to consider step correction",
+            (s,v) => { AvatarContactProcessingThreshold = v; } ),
+            new ParameterDefn<float>("AvatarStepHeight", "Height of a step obstacle to consider step correction",
             0.3f,
-            (s,cf,p,v) => { AvatarStepHeight = cf.GetFloat(p, v); },
             (s) => { return AvatarStepHeight; },
-            (s,p,l,v) => { AvatarStepHeight = v; } ),
-            new ParameterDefn("AvatarStepApproachFactor", "Factor to control angle of approach to step (0=straight on)",
+            (s,v) => { AvatarStepHeight = v; } ),
+            new ParameterDefn<float>("AvatarStepApproachFactor", "Factor to control angle of approach to step (0=straight on)",
             0.6f,
-            (s,cf,p,v) => { AvatarStepApproachFactor = cf.GetFloat(p, v); },
             (s) => { return AvatarStepApproachFactor; },
-            (s,p,l,v) => { AvatarStepApproachFactor = v; } ),
-            new ParameterDefn("AvatarStepForceFactor", "Controls the amount of force up applied to step up onto a step",
+            (s,v) => { AvatarStepApproachFactor = v; } ),
+            new ParameterDefn<float>("AvatarStepForceFactor", "Controls the amount of force up applied to step up onto a step",
             2.0f,
-            (s,cf,p,v) => { AvatarStepForceFactor = cf.GetFloat(p, v); },
             (s) => { return AvatarStepForceFactor; },
-            (s,p,l,v) => { AvatarStepForceFactor = v; } ),
+            (s,v) => { AvatarStepForceFactor = v; } ),
 
-        new ParameterDefn("VehicleMaxLinearVelocity", "Maximum velocity magnitude that can be assigned to a vehicle",
+        new ParameterDefn<float>("VehicleMaxLinearVelocity", "Maximum velocity magnitude that can be assigned to a vehicle",
             1000.0f,
-            (s,cf,p,v) => { VehicleMaxLinearVelocity = cf.GetFloat(p, v); },
             (s) => { return (float)VehicleMaxLinearVelocity; },
-            (s,p,l,v) => { VehicleMaxLinearVelocity = v; VehicleMaxLinearVelocitySq = v * v; } ),
-        new ParameterDefn("VehicleMaxAngularVelocity", "Maximum rotational velocity magnitude that can be assigned to a vehicle",
+            (s,v) => { VehicleMaxLinearVelocity = v; VehicleMaxLinearVelocitySq = v * v; } ),
+        new ParameterDefn<float>("VehicleMaxAngularVelocity", "Maximum rotational velocity magnitude that can be assigned to a vehicle",
             12.0f,
-            (s,cf,p,v) => { VehicleMaxAngularVelocity = cf.GetFloat(p, v); },
             (s) => { return (float)VehicleMaxAngularVelocity; },
-            (s,p,l,v) => { VehicleMaxAngularVelocity = v; VehicleMaxAngularVelocitySq = v * v; } ),
-        new ParameterDefn("VehicleAngularDamping", "Factor to damp vehicle angular movement per second (0.0 - 1.0)",
+            (s,v) => { VehicleMaxAngularVelocity = v; VehicleMaxAngularVelocitySq = v * v; } ),
+        new ParameterDefn<float>("VehicleAngularDamping", "Factor to damp vehicle angular movement per second (0.0 - 1.0)",
             0.0f,
-            (s,cf,p,v) => { VehicleAngularDamping = cf.GetFloat(p, v); },
             (s) => { return VehicleAngularDamping; },
-            (s,p,l,v) => { VehicleAngularDamping = v; } ),
-        new ParameterDefn("VehicleLinearFactor", "Fraction of physical linear changes applied to vehicle (0.0 - 1.0)",
-            1.0f,
-            (s,cf,p,v) => { VehicleLinearFactor = cf.GetFloat(p, v); },
+            (s,v) => { VehicleAngularDamping = v; } ),
+        new ParameterDefn<Vector3>("VehicleLinearFactor", "Fraction of physical linear changes applied to vehicle (<0,0,0> to <1,1,1>)",
+            new Vector3(1f, 1f, 1f),
             (s) => { return VehicleLinearFactor; },
-            (s,p,l,v) => { VehicleLinearFactor = v; VehicleLinearFactorV = new Vector3(v, v, v); } ),
-        new ParameterDefn("VehicleAngularFactor", "Fraction of physical angular changes applied to vehicle (0.0 - 1.0)",
-            1.0f,
-            (s,cf,p,v) => { VehicleAngularFactor = cf.GetFloat(p, v); },
+            (s,v) => { VehicleLinearFactor = v; } ),
+        new ParameterDefn<Vector3>("VehicleAngularFactor", "Fraction of physical angular changes applied to vehicle (<0,0,0> to <1,1,1>)",
+            new Vector3(1f, 1f, 1f),
             (s) => { return VehicleAngularFactor; },
-            (s,p,l,v) => { VehicleAngularFactor = v; VehicleAngularFactorV = new Vector3(v, v, v); } ),
-        new ParameterDefn("VehicleFriction", "Friction of vehicle on the ground (0.0 - 1.0)",
+            (s,v) => { VehicleAngularFactor = v; } ),
+        new ParameterDefn<float>("VehicleFriction", "Friction of vehicle on the ground (0.0 - 1.0)",
             0.0f,
-            (s,cf,p,v) => { VehicleFriction = cf.GetFloat(p, v); },
             (s) => { return VehicleFriction; },
-            (s,p,l,v) => { VehicleFriction = v; } ),
-        new ParameterDefn("VehicleRestitution", "Bouncyness factor for vehicles (0.0 - 1.0)",
+            (s,v) => { VehicleFriction = v; } ),
+        new ParameterDefn<float>("VehicleRestitution", "Bouncyness factor for vehicles (0.0 - 1.0)",
             0.0f,
-            (s,cf,p,v) => { VehicleRestitution = cf.GetFloat(p, v); },
             (s) => { return VehicleRestitution; },
-            (s,p,l,v) => { VehicleRestitution = v; } ),
-        new ParameterDefn("VehicleGroundGravityFudge", "Factor to multiple gravity if a ground vehicle is probably on the ground (0.0 - 1.0)",
+            (s,v) => { VehicleRestitution = v; } ),
+        new ParameterDefn<float>("VehicleGroundGravityFudge", "Factor to multiple gravity if a ground vehicle is probably on the ground (0.0 - 1.0)",
             0.2f,
-            (s,cf,p,v) => { VehicleGroundGravityFudge = cf.GetFloat(p, v); },
             (s) => { return VehicleGroundGravityFudge; },
-            (s,p,l,v) => { VehicleGroundGravityFudge = v; } ),
-        new ParameterDefn("VehicleDebuggingEnable", "Turn on/off vehicle debugging",
-            ConfigurationParameters.numericFalse,
-            (s,cf,p,v) => { VehicleDebuggingEnabled = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
+            (s,v) => { VehicleGroundGravityFudge = v; } ),
+        new ParameterDefn<bool>("VehicleDebuggingEnable", "Turn on/off vehicle debugging",
+            false,
             (s) => { return VehicleDebuggingEnabled; },
-            (s,p,l,v) => { VehicleDebuggingEnabled = v; } ),
+            (s,v) => { VehicleDebuggingEnabled = v; } ),
 
-            new ParameterDefn("MaxPersistantManifoldPoolSize", "Number of manifolds pooled (0 means default of 4096)",
+            new ParameterDefn<float>("MaxPersistantManifoldPoolSize", "Number of manifolds pooled (0 means default of 4096)",
             0f,
-            (s,cf,p,v) => { MaxPersistantManifoldPoolSize = cf.GetFloat(p, v); },
             (s) => { return MaxPersistantManifoldPoolSize; },
-            (s,p,l,v) => { MaxPersistantManifoldPoolSize = v; s.UnmanagedParams[0].maxPersistantManifoldPoolSize = v; } ),
-            new ParameterDefn("MaxCollisionAlgorithmPoolSize", "Number of collisions pooled (0 means default of 4096)",
+            (s,v) => { MaxPersistantManifoldPoolSize = v; s.UnmanagedParams[0].maxPersistantManifoldPoolSize = v; } ),
+            new ParameterDefn<float>("MaxCollisionAlgorithmPoolSize", "Number of collisions pooled (0 means default of 4096)",
             0f,
-            (s,cf,p,v) => { MaxCollisionAlgorithmPoolSize = cf.GetFloat(p, v); },
             (s) => { return MaxCollisionAlgorithmPoolSize; },
-            (s,p,l,v) => { MaxCollisionAlgorithmPoolSize = v; s.UnmanagedParams[0].maxCollisionAlgorithmPoolSize = v; } ),
-            new ParameterDefn("ShouldDisableContactPoolDynamicAllocation", "Enable to allow large changes in object count",
-            ConfigurationParameters.numericFalse,
-            (s,cf,p,v) => { ShouldDisableContactPoolDynamicAllocation = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
+            (s,v) => { MaxCollisionAlgorithmPoolSize = v; s.UnmanagedParams[0].maxCollisionAlgorithmPoolSize = v; } ),
+            new ParameterDefn<bool>("ShouldDisableContactPoolDynamicAllocation", "Enable to allow large changes in object count",
+            false,
             (s) => { return ShouldDisableContactPoolDynamicAllocation; },
-            (s,p,l,v) => { ShouldDisableContactPoolDynamicAllocation = v; s.UnmanagedParams[0].shouldDisableContactPoolDynamicAllocation = v; } ),
-            new ParameterDefn("ShouldForceUpdateAllAabbs", "Enable to recomputer AABBs every simulator step",
-            ConfigurationParameters.numericFalse,
-            (s,cf,p,v) => { ShouldForceUpdateAllAabbs = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
+            (s,v) => { ShouldDisableContactPoolDynamicAllocation = v; 
+                        s.UnmanagedParams[0].shouldDisableContactPoolDynamicAllocation = NumericBool(v); } ),
+            new ParameterDefn<bool>("ShouldForceUpdateAllAabbs", "Enable to recomputer AABBs every simulator step",
+            false,
             (s) => { return ShouldForceUpdateAllAabbs; },
-            (s,p,l,v) => { ShouldForceUpdateAllAabbs = v; s.UnmanagedParams[0].shouldForceUpdateAllAabbs = v; } ),
-            new ParameterDefn("ShouldRandomizeSolverOrder", "Enable for slightly better stacking interaction",
-            ConfigurationParameters.numericTrue,
-            (s,cf,p,v) => { ShouldRandomizeSolverOrder = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
+            (s,v) => { ShouldForceUpdateAllAabbs = v; s.UnmanagedParams[0].shouldForceUpdateAllAabbs = NumericBool(v); } ),
+            new ParameterDefn<bool>("ShouldRandomizeSolverOrder", "Enable for slightly better stacking interaction",
+            true,
             (s) => { return ShouldRandomizeSolverOrder; },
-            (s,p,l,v) => { ShouldRandomizeSolverOrder = v; s.UnmanagedParams[0].shouldRandomizeSolverOrder = v; } ),
-            new ParameterDefn("ShouldSplitSimulationIslands", "Enable splitting active object scanning islands",
-            ConfigurationParameters.numericTrue,
-            (s,cf,p,v) => { ShouldSplitSimulationIslands = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
+            (s,v) => { ShouldRandomizeSolverOrder = v; s.UnmanagedParams[0].shouldRandomizeSolverOrder = NumericBool(v); } ),
+            new ParameterDefn<bool>("ShouldSplitSimulationIslands", "Enable splitting active object scanning islands",
+            true,
             (s) => { return ShouldSplitSimulationIslands; },
-            (s,p,l,v) => { ShouldSplitSimulationIslands = v; s.UnmanagedParams[0].shouldSplitSimulationIslands = v; } ),
-            new ParameterDefn("ShouldEnableFrictionCaching", "Enable friction computation caching",
-            ConfigurationParameters.numericTrue,
-            (s,cf,p,v) => { ShouldEnableFrictionCaching = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
+            (s,v) => { ShouldSplitSimulationIslands = v; s.UnmanagedParams[0].shouldSplitSimulationIslands = NumericBool(v); } ),
+            new ParameterDefn<bool>("ShouldEnableFrictionCaching", "Enable friction computation caching",
+            true,
             (s) => { return ShouldEnableFrictionCaching; },
-            (s,p,l,v) => { ShouldEnableFrictionCaching = v; s.UnmanagedParams[0].shouldEnableFrictionCaching = v; } ),
-            new ParameterDefn("NumberOfSolverIterations", "Number of internal iterations (0 means default)",
+            (s,v) => { ShouldEnableFrictionCaching = v; s.UnmanagedParams[0].shouldEnableFrictionCaching = NumericBool(v); } ),
+            new ParameterDefn<float>("NumberOfSolverIterations", "Number of internal iterations (0 means default)",
             0f,     // zero says use Bullet default
-            (s,cf,p,v) => { NumberOfSolverIterations = cf.GetFloat(p, v); },
             (s) => { return NumberOfSolverIterations; },
-            (s,p,l,v) => { NumberOfSolverIterations = v; s.UnmanagedParams[0].numberOfSolverIterations = v; } ),
-            new ParameterDefn("UseSingleSidedMeshes", "Whether to compute collisions based on single sided meshes.",
-            ConfigurationParameters.numericTrue,
-            (s,cf,p,v) => { UseSingleSidedMeshesF = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
-            (s) => { return UseSingleSidedMeshesF; },
-            (s,p,l,v) => { UseSingleSidedMeshesF = v; s.UnmanagedParams[0].useSingleSidedMeshes = v; } ),
-            new ParameterDefn("GlobalContactBreakingThreshold", "Amount of shape radius before breaking a collision contact (0 says Bullet default (0.2))",
+            (s,v) => { NumberOfSolverIterations = v; s.UnmanagedParams[0].numberOfSolverIterations = v; } ),
+            new ParameterDefn<bool>("UseSingleSidedMeshes", "Whether to compute collisions based on single sided meshes.",
+            true,
+            (s) => { return UseSingleSidedMeshes; },
+            (s,v) => { UseSingleSidedMeshes = v; s.UnmanagedParams[0].useSingleSidedMeshes = NumericBool(v); } ),
+            new ParameterDefn<float>("GlobalContactBreakingThreshold", "Amount of shape radius before breaking a collision contact (0 says Bullet default (0.2))",
             0f,
-            (s,cf,p,v) => { GlobalContactBreakingThreshold = cf.GetFloat(p, v); },
             (s) => { return GlobalContactBreakingThreshold; },
-            (s,p,l,v) => { GlobalContactBreakingThreshold = v; s.UnmanagedParams[0].globalContactBreakingThreshold = v; } ),
+            (s,v) => { GlobalContactBreakingThreshold = v; s.UnmanagedParams[0].globalContactBreakingThreshold = v; } ),
 
-            new ParameterDefn("LinksetImplementation", "Type of linkset implementation (0=Constraint, 1=Compound, 2=Manual)",
+            new ParameterDefn<float>("LinksetImplementation", "Type of linkset implementation (0=Constraint, 1=Compound, 2=Manual)",
             (float)BSLinkset.LinksetImplementation.Compound,
-            (s,cf,p,v) => { LinksetImplementation = cf.GetFloat(p,v); },
             (s) => { return LinksetImplementation; },
-            (s,p,l,v) => { LinksetImplementation = v; } ),
-            new ParameterDefn("LinkConstraintUseFrameOffset", "For linksets built with constraints, enable frame offsetFor linksets built with constraints, enable frame offset.",
-            ConfigurationParameters.numericFalse,
-            (s,cf,p,v) => { LinkConstraintUseFrameOffset = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
+            (s,v) => { LinksetImplementation = v; } ),
+            new ParameterDefn<bool>("LinkConstraintUseFrameOffset", "For linksets built with constraints, enable frame offsetFor linksets built with constraints, enable frame offset.",
+            false,
             (s) => { return LinkConstraintUseFrameOffset; },
-            (s,p,l,v) => { LinkConstraintUseFrameOffset = v; } ),
-            new ParameterDefn("LinkConstraintEnableTransMotor", "Whether to enable translational motor on linkset constraints",
-            ConfigurationParameters.numericTrue,
-            (s,cf,p,v) => { LinkConstraintEnableTransMotor = BSParam.NumericBool(cf.GetBoolean(p, BSParam.BoolNumeric(v))); },
+            (s,v) => { LinkConstraintUseFrameOffset = v; } ),
+            new ParameterDefn<bool>("LinkConstraintEnableTransMotor", "Whether to enable translational motor on linkset constraints",
+            true,
             (s) => { return LinkConstraintEnableTransMotor; },
-            (s,p,l,v) => { LinkConstraintEnableTransMotor = v; } ),
-            new ParameterDefn("LinkConstraintTransMotorMaxVel", "Maximum velocity to be applied by translational motor in linkset constraints",
+            (s,v) => { LinkConstraintEnableTransMotor = v; } ),
+            new ParameterDefn<float>("LinkConstraintTransMotorMaxVel", "Maximum velocity to be applied by translational motor in linkset constraints",
             5.0f,
-            (s,cf,p,v) => { LinkConstraintTransMotorMaxVel = cf.GetFloat(p, v); },
             (s) => { return LinkConstraintTransMotorMaxVel; },
-            (s,p,l,v) => { LinkConstraintTransMotorMaxVel = v; } ),
-            new ParameterDefn("LinkConstraintTransMotorMaxForce", "Maximum force to be applied by translational motor in linkset constraints",
+            (s,v) => { LinkConstraintTransMotorMaxVel = v; } ),
+            new ParameterDefn<float>("LinkConstraintTransMotorMaxForce", "Maximum force to be applied by translational motor in linkset constraints",
             0.1f,
-            (s,cf,p,v) => { LinkConstraintTransMotorMaxForce = cf.GetFloat(p, v); },
             (s) => { return LinkConstraintTransMotorMaxForce; },
-            (s,p,l,v) => { LinkConstraintTransMotorMaxForce = v; } ),
-            new ParameterDefn("LinkConstraintCFM", "Amount constraint can be violated. 0=no violation, 1=infinite. Default=0.1",
+            (s,v) => { LinkConstraintTransMotorMaxForce = v; } ),
+            new ParameterDefn<float>("LinkConstraintCFM", "Amount constraint can be violated. 0=no violation, 1=infinite. Default=0.1",
             0.1f,
-            (s,cf,p,v) => { LinkConstraintCFM = cf.GetFloat(p, v); },
             (s) => { return LinkConstraintCFM; },
-            (s,p,l,v) => { LinkConstraintCFM = v; } ),
-            new ParameterDefn("LinkConstraintERP", "Amount constraint is corrected each tick. 0=none, 1=all. Default = 0.2",
+            (s,v) => { LinkConstraintCFM = v; } ),
+            new ParameterDefn<float>("LinkConstraintERP", "Amount constraint is corrected each tick. 0=none, 1=all. Default = 0.2",
             0.1f,
-            (s,cf,p,v) => { LinkConstraintERP = cf.GetFloat(p, v); },
             (s) => { return LinkConstraintERP; },
-            (s,p,l,v) => { LinkConstraintERP = v; } ),
-            new ParameterDefn("LinkConstraintSolverIterations", "Number of solver iterations when computing constraint. (0 = Bullet default)",
+            (s,v) => { LinkConstraintERP = v; } ),
+            new ParameterDefn<float>("LinkConstraintSolverIterations", "Number of solver iterations when computing constraint. (0 = Bullet default)",
             40,
-            (s,cf,p,v) => { LinkConstraintSolverIterations = cf.GetFloat(p, v); },
             (s) => { return LinkConstraintSolverIterations; },
-            (s,p,l,v) => { LinkConstraintSolverIterations = v; } ),
+            (s,v) => { LinkConstraintSolverIterations = v; } ),
 
-        new ParameterDefn("PhysicsMetricFrames", "Frames between outputting detailed phys metrics. (0 is off)",
-            0f,
-            (s,cf,p,v) => { s.PhysicsMetricDumpFrames = cf.GetFloat(p, (int)v); },
-            (s) => { return (float)s.PhysicsMetricDumpFrames; },
-            (s,p,l,v) => { s.PhysicsMetricDumpFrames = (int)v; } ),
-        new ParameterDefn("ResetBroadphasePool", "Setting this is any value resets the broadphase collision pool",
+        new ParameterDefn<int>("PhysicsMetricFrames", "Frames between outputting detailed phys metrics. (0 is off)",
+            0,
+            (s) => { return s.PhysicsMetricDumpFrames; },
+            (s,v) => { s.PhysicsMetricDumpFrames = v; } ),
+        new ParameterDefn<float>("ResetBroadphasePool", "Setting this is any value resets the broadphase collision pool",
             0f,
-            (s,cf,p,v) => { ; },
             (s) => { return 0f; },
-            (s,p,l,v) => { BSParam.ResetBroadphasePoolTainted(s, v); } ),
-        new ParameterDefn("ResetConstraintSolver", "Setting this is any value resets the constraint solver",
+            (s,v) => { BSParam.ResetBroadphasePoolTainted(s, v); } ),
+        new ParameterDefn<float>("ResetConstraintSolver", "Setting this is any value resets the constraint solver",
             0f,
-            (s,cf,p,v) => { ; },
             (s) => { return 0f; },
-            (s,p,l,v) => { BSParam.ResetConstraintSolverTainted(s, v); } ),
+            (s,v) => { BSParam.ResetConstraintSolverTainted(s, v); } ),
     };
 
     // Convert a boolean to our numeric true and false values
@@ -658,13 +644,13 @@ public static class BSParam
     //    ParameterDefn structure.
     // Case does not matter as names are compared after converting to lower case.
     // Returns 'false' if the parameter is not found.
-    internal static bool TryGetParameter(string paramName, out ParameterDefn defn)
+    internal static bool TryGetParameter(string paramName, out ParameterDefnBase defn)
     {
         bool ret = false;
-        ParameterDefn foundDefn = new ParameterDefn();
+        ParameterDefnBase foundDefn = null;
         string pName = paramName.ToLower();
 
-        foreach (ParameterDefn parm in ParameterDefinitions)
+        foreach (ParameterDefnBase parm in ParameterDefinitions)
         {
             if (pName == parm.name.ToLower())
             {
@@ -680,18 +666,18 @@ public static class BSParam
     // Pass through the settable parameters and set the default values
     internal static void SetParameterDefaultValues(BSScene physicsScene)
     {
-        foreach (ParameterDefn parm in ParameterDefinitions)
+        foreach (ParameterDefnBase parm in ParameterDefinitions)
         {
-            parm.setter(physicsScene, parm.name, PhysParameterEntry.APPLY_TO_NONE, parm.defaultValue);
+            parm.AssignDefault(physicsScene);
         }
     }
 
     // Get user set values out of the ini file.
     internal static void SetParameterConfigurationValues(BSScene physicsScene, IConfig cfg)
     {
-        foreach (ParameterDefn parm in ParameterDefinitions)
+        foreach (ParameterDefnBase parm in ParameterDefinitions)
         {
-            parm.userParam(physicsScene, cfg, parm.name, parm.defaultValue);
+            parm.SetValue(physicsScene, cfg.GetString(parm.name, parm.GetValue(physicsScene)));
         }
     }
 
@@ -706,17 +692,21 @@ public static class BSParam
             List<PhysParameterEntry> entries = new List<PhysParameterEntry>();
             for (int ii = 0; ii < ParameterDefinitions.Length; ii++)
             {
-                ParameterDefn pd = ParameterDefinitions[ii];
+                ParameterDefnBase pd = ParameterDefinitions[ii];
                 entries.Add(new PhysParameterEntry(pd.name, pd.desc));
             }
 
-            // make the list alphabetical for estetic reasons
+            // make the list alphabetical for ease of finding anything
             entries.Sort((ppe1, ppe2) => { return ppe1.name.CompareTo(ppe2.name); });
 
             SettableParameters = entries.ToArray();
         }
     }
 
+    // =====================================================================
+    // =====================================================================
+    // There are parameters that, when set, cause things to happen in the physics engine.
+    // This causes the broadphase collision cache to be cleared.
     private static void ResetBroadphasePoolTainted(BSScene pPhysScene, float v)
     {
         BSScene physScene = pPhysScene;
@@ -726,6 +716,7 @@ public static class BSParam
         });
     }
 
+    // This causes the constraint solver cache to be cleared and reset.
     private static void ResetConstraintSolverTainted(BSScene pPhysScene, float v)
     {
         BSScene physScene = pPhysScene;
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
index 0323b0d..4dff927 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
@@ -70,6 +70,8 @@ public class BSPrim : BSPhysObject
     private bool _kinematic;
     private float _buoyancy;
 
+    private int CrossingFailures { get; set; }
+
     public BSDynamics VehicleController { get; private set; }
 
     private BSVMotor _targetMotor;
@@ -197,7 +199,20 @@ public class BSPrim : BSPhysObject
     {
         get { return _isSelected; }
     }
-    public override void CrossingFailure() { return; }
+
+    public override void CrossingFailure()
+    {
+        CrossingFailures++;
+        if (CrossingFailures > BSParam.CrossingFailuresBeforeOutOfBounds)
+        {
+            base.RaiseOutOfBounds(RawPosition);
+        }
+        else if (CrossingFailures == BSParam.CrossingFailuresBeforeOutOfBounds)
+        {
+            m_log.WarnFormat("{0} Too many crossing failures for {1}", LogHeader, Name);
+        }
+        return;
+    }
 
     // link me to the specified parent
     public override void link(PhysicsActor obj) {
@@ -239,50 +254,98 @@ public class BSPrim : BSPhysObject
         });
     }
 
+    bool TryExperimentalLockAxisCode = false;
+    BSConstraint LockAxisConstraint = null;
     public override void LockAngularMotion(OMV.Vector3 axis)
     {
         DetailLog("{0},BSPrim.LockAngularMotion,call,axis={1}", LocalID, axis);
 
+        // "1" means free, "0" means locked
         OMV.Vector3 locking = new OMV.Vector3(1f, 1f, 1f);
         if (axis.X != 1) locking.X = 0f;
         if (axis.Y != 1) locking.Y = 0f;
         if (axis.Z != 1) locking.Z = 0f;
         LockedAxis = locking;
 
-        /*  Not implemented yet
-        if (LockedAxis != LockedAxisFree)
+        if (TryExperimentalLockAxisCode && LockedAxis != LockedAxisFree)
         {
-            // Something is locked so start the thingy that keeps that axis from changing
-            RegisterPreUpdatePropertyAction("BSPrim.LockAngularMotion", delegate(ref EntityProperties entprop)
+            // Lock that axis by creating a 6DOF constraint that has one end in the world and
+            //    the other in the object.
+            // http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?p=20817
+            // http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?p=26380
+
+            PhysicsScene.TaintedObject("BSPrim.LockAngularMotion", delegate()
             {
-                if (LockedAxis != LockedAxisFree)
+                CleanUpLockAxisPhysicals(true /* inTaintTime */);
+
+                BSConstraint6Dof axisConstrainer = new BSConstraint6Dof(PhysicsScene.World, PhysBody, 
+                                    OMV.Vector3.Zero, OMV.Quaternion.Inverse(RawOrientation),
+                                    true /* useLinearReferenceFrameB */, true /* disableCollisionsBetweenLinkedBodies */);
+                LockAxisConstraint = axisConstrainer;
+                PhysicsScene.Constraints.AddConstraint(LockAxisConstraint);
+
+                // The constraint is tied to the world and oriented to the prim.
+
+                // Free to move linearly
+                OMV.Vector3 linearLow = OMV.Vector3.Zero;
+                OMV.Vector3 linearHigh = PhysicsScene.TerrainManager.DefaultRegionSize;
+                axisConstrainer.SetLinearLimits(linearLow, linearHigh);
+
+                // Angular with some axis locked
+                float f2PI = (float)Math.PI * 2f;
+                OMV.Vector3 angularLow = new OMV.Vector3(-f2PI, -f2PI, -f2PI);
+                OMV.Vector3 angularHigh = new OMV.Vector3(f2PI, f2PI, f2PI);
+                if (LockedAxis.X != 1f)
                 {
-                    if (IsPhysicallyActive)
-                    {
-                        // Bullet can lock axis but it only works for global axis.
-                        // Check if this prim is aligned on global axis and use Bullet's
-                        //    system if so.
-
-                        ForceOrientation = entprop.Rotation;
-                        ForceRotationalVelocity = entprop.RotationalVelocity;
-                    }
+                    angularLow.X = 0f;
+                    angularHigh.X = 0f;
                 }
-                else
+                if (LockedAxis.Y != 1f)
+                {
+                    angularLow.Y = 0f;
+                    angularHigh.Y = 0f;
+                }
+                if (LockedAxis.Z != 1f)
                 {
-                    UnRegisterPreUpdatePropertyAction("BSPrim.LockAngularMotion");
+                    angularLow.Z = 0f;
+                    angularHigh.Z = 0f;
                 }
+                axisConstrainer.SetAngularLimits(angularLow, angularHigh);
+
+                DetailLog("{0},BSPrim.LockAngularMotion,create,linLow={1},linHi={2},angLow={3},angHi={4}",
+                                            LocalID, linearLow, linearHigh, angularLow, angularHigh);
 
+                // Constants from one of the posts mentioned above and used in Bullet's ConstraintDemo.
+                axisConstrainer.TranslationalLimitMotor(true /* enable */, 5.0f, 0.1f);
+
+                axisConstrainer.RecomputeConstraintVariables(RawMass);
             });
         }
         else
         {
             // Everything seems unlocked
-            UnRegisterPreUpdatePropertyAction("BSPrim.LockAngularMotion");
+            CleanUpLockAxisPhysicals(false /* inTaintTime */);
         }
-         */
 
         return;
     }
+    // Get rid of any constraint built for LockAxis
+    // Most often the constraint is removed when the constraint collection is cleaned for this prim.
+    private void CleanUpLockAxisPhysicals(bool inTaintTime)
+    {
+        if (LockAxisConstraint != null)
+        {
+            PhysicsScene.TaintedObject(inTaintTime, "BSPrim.CleanUpLockAxisPhysicals", delegate()
+            {
+                if (LockAxisConstraint != null)
+                {
+                    PhysicsScene.Constraints.RemoveAndDestroyConstraint(LockAxisConstraint);
+                    LockAxisConstraint = null;
+                    DetailLog("{0},BSPrim.CleanUpLockAxisPhysicals,destroyingConstraint", LocalID);
+                }
+            });
+        }
+    }
 
     public override OMV.Vector3 RawPosition
     {
@@ -762,6 +825,7 @@ public class BSPrim : BSPhysObject
                     SetObjectDynamic(true);
                     // whether phys-to-static or static-to-phys, the object is not moving.
                     ZeroMotion(true);
+
                 });
             }
         }
@@ -885,6 +949,8 @@ public class BSPrim : BSPhysObject
 
             // For good measure, make sure the transform is set through to the motion state
             ForcePosition = _position;
+            ForceVelocity = _velocity;
+            ForceRotationalVelocity = _rotationalVelocity;
 
             // A dynamic object has mass
             UpdatePhysicalMassProperties(RawMass, false);
@@ -1064,15 +1130,19 @@ public class BSPrim : BSPhysObject
             _buoyancy = value;
             // DetailLog("{0},BSPrim.setForceBuoyancy,taint,buoy={1}", LocalID, _buoyancy);
             // Force the recalculation of the various inertia,etc variables in the object
-            DetailLog("{0},BSPrim.ForceBuoyancy,buoy={1},mass={2}", LocalID, _buoyancy, _mass);
-            UpdatePhysicalMassProperties(_mass, true);
+            UpdatePhysicalMassProperties(RawMass, true);
+            DetailLog("{0},BSPrim.ForceBuoyancy,buoy={1},mass={2},grav={3}", LocalID, _buoyancy, RawMass, Gravity);
             ActivateIfPhysical(false);
         }
     }
 
     // Used for MoveTo
     public override OMV.Vector3 PIDTarget {
-        set { _PIDTarget = value; }
+        set
+        {
+            // TODO: add a sanity check -- don't move more than a region or something like that.
+            _PIDTarget = value;
+        }
     }
     public override float PIDTau {
         set { _PIDTau = value; }
@@ -1126,7 +1196,9 @@ public class BSPrim : BSPhysObject
                     }
                     else
                     {
-                        ForcePosition = movePosition;
+                        _position = movePosition;
+                        PositionSanityCheck(true /* intaintTime */);
+                        ForcePosition = _position;
                     }
                     DetailLog("{0},BSPrim.PIDTarget,move,fromPos={1},movePos={2}", LocalID, origPosition, movePosition);
                 });
@@ -1303,6 +1375,7 @@ public class BSPrim : BSPhysObject
             {
                 if (PhysBody.HasPhysicalBody)
                 {
+                    DetailLog("{0},BSPrim.AddAngularForce,taint,angForce={1}", LocalID, angForce);
                     PhysicsScene.PE.ApplyTorque(PhysBody, angForce);
                     ActivateIfPhysical(false);
                 }
@@ -1667,7 +1740,7 @@ public class BSPrim : BSPhysObject
         // _velocity = entprop.Velocity;
         // DEBUG DEBUG DEBUG -- smooth velocity changes a bit. The simulator seems to be
         //    very sensitive to velocity changes.
-        if (!entprop.Velocity.ApproxEquals(_velocity, 0.1f))
+        if (entprop.Velocity == OMV.Vector3.Zero || !entprop.Velocity.ApproxEquals(_velocity, 0.1f))
             _velocity = entprop.Velocity;
         _acceleration = entprop.Acceleration;
         _rotationalVelocity = entprop.RotationalVelocity;
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
index 05722b8..e6aefd5 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSScene.cs
@@ -161,7 +161,7 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
     private int m_physicsLoggingFileMinutes;
     private bool m_physicsLoggingDoFlush;
     private bool m_physicsPhysicalDumpEnabled;
-    public float PhysicsMetricDumpFrames { get; set; }
+    public int PhysicsMetricDumpFrames { get; set; }
     // 'true' of the vehicle code is to log lots of details
     public bool VehicleLoggingEnabled { get; private set; }
     public bool VehiclePhysicalLoggingEnabled { get; private set; }
@@ -542,7 +542,7 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
             collidersCount = 0;
         }
 
-        if ((m_simulationStep % PhysicsMetricDumpFrames) == 0)
+        if (PhysicsMetricDumpFrames != 0 && ((m_simulationStep % PhysicsMetricDumpFrames) == 0))
             PE.DumpPhysicsStatistics(World);
 
         // Get a value for 'now' so all the collision and update routines don't have to get their own.
@@ -880,38 +880,14 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
     {
         bool ret = false;
 
-        float valf = 0f;
-        if (val.ToLower() == "true")
-        {
-            valf = PhysParameterEntry.NUMERIC_TRUE;
-        }
-        else
-        {
-            if (val.ToLower() == "false")
-            {
-                valf = PhysParameterEntry.NUMERIC_FALSE;
-            }
-            else
-            {
-                try
-                {
-                    valf = float.Parse(val);
-                }
-                catch
-                {
-                    valf = 0f;
-                }
-            }
-        }
-
-        BSParam.ParameterDefn theParam;
+        BSParam.ParameterDefnBase theParam;
         if (BSParam.TryGetParameter(parm, out theParam))
         {
             // Set the value in the C# code
-            theParam.setter(this, parm, localID, valf);
+            theParam.SetValue(this, val);
 
             // Optionally set the parameter in the unmanaged code
-            if (theParam.onObject != null)
+            if (theParam.HasSetOnObject)
             {
                 // update all the localIDs specified
                 // If the local ID is APPLY_TO_NONE, just change the default value
@@ -923,16 +899,16 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
                     case PhysParameterEntry.APPLY_TO_NONE:
                         // This will cause a call into the physical world if some operation is specified (SetOnObject).
                         objectIDs.Add(TERRAIN_ID);
-                        TaintedUpdateParameter(parm, objectIDs, valf);
+                        TaintedUpdateParameter(parm, objectIDs, val);
                         break;
                     case PhysParameterEntry.APPLY_TO_ALL:
                         lock (PhysObjects) objectIDs = new List<uint>(PhysObjects.Keys);
-                        TaintedUpdateParameter(parm, objectIDs, valf);
+                        TaintedUpdateParameter(parm, objectIDs, val);
                         break;
                     default:
                         // setting only one localID
                         objectIDs.Add(localID);
-                        TaintedUpdateParameter(parm, objectIDs, valf);
+                        TaintedUpdateParameter(parm, objectIDs, val);
                         break;
                 }
             }
@@ -943,22 +919,22 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
     }
 
     // schedule the actual updating of the paramter to when the phys engine is not busy
-    private void TaintedUpdateParameter(string parm, List<uint> lIDs, float val)
+    private void TaintedUpdateParameter(string parm, List<uint> lIDs, string val)
     {
-        float xval = val;
+        string xval = val;
         List<uint> xlIDs = lIDs;
         string xparm = parm;
         TaintedObject("BSScene.UpdateParameterSet", delegate() {
-            BSParam.ParameterDefn thisParam;
+            BSParam.ParameterDefnBase thisParam;
             if (BSParam.TryGetParameter(xparm, out thisParam))
             {
-                if (thisParam.onObject != null)
+                if (thisParam.HasSetOnObject)
                 {
                     foreach (uint lID in xlIDs)
                     {
                         BSPhysObject theObject = null;
                         if (PhysObjects.TryGetValue(lID, out theObject))
-                            thisParam.onObject(this, theObject, xval);
+                            thisParam.SetOnObject(this, theObject);
                     }
                 }
             }
@@ -971,10 +947,10 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
     {
         string val = String.Empty;
         bool ret = false;
-        BSParam.ParameterDefn theParam;
+        BSParam.ParameterDefnBase theParam;
         if (BSParam.TryGetParameter(parm, out theParam))
         {
-            val = theParam.getter(this).ToString();
+            val = theParam.GetValue(this);
             ret = true;
         }
         value = val;
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs b/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs
index 096b300..2e54a93 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSShapeCollection.cs
@@ -568,7 +568,7 @@ public sealed class BSShapeCollection : IDisposable
         {
 
             newShape = PhysicsScene.PE.BuildCapsuleShape(PhysicsScene.World, 1f, 1f, prim.Scale);
-            if (DDetail) DetailLog("{0},BSShapeCollection.BuiletPhysicalNativeShape,capsule,scale={1}", prim.LocalID, prim.Scale);
+            if (DDetail) DetailLog("{0},BSShapeCollection.BuildPhysicalNativeShape,capsule,scale={1}", prim.LocalID, prim.Scale);
         }
         else
         {
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt b/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
index bda7c47..49718c4 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
+++ b/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
@@ -1,17 +1,16 @@
 CURRENT PRIORITIES
 =================================================
-One sided meshes? Should terrain be built into a closed shape?
-        When meshes get partially wedged into the terrain, they cannot push themselves out.
-        It is possible that Bullet processes collisions whether entering or leaving a mesh.
-        Ref: http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=4869
 Deleting a linkset while standing on the root will leave the physical shape of the root behind.
         Not sure if it is because standing on it. Done with large prim linksets.
-Terrain detail: double terrain mesh detail
 Vehicle angular vertical attraction
 vehicle angular banking
 Center-of-gravity
 Vehicle angular deflection
         Preferred orientation angular correction fix
+Enable vehicle border crossings (at least as poorly as ODE)
+        Terrain skirts
+        Avatar created in previous region and not new region when crossing border
+        Vehicle recreated in new sim at small Z value (offset from root value?) (DONE)
 when should angular and linear motor targets be zeroed? when selected?
         Need a vehicle.clear()? Or an 'else' in prestep if not physical.
 Teravus llMoveToTarget script debug
@@ -26,14 +25,16 @@ Avatar movement
         flying into a wall doesn't stop avatar who keeps appearing to move through the obstacle (DONE)
         walking up stairs is not calibrated correctly (stairs out of Kepler cabin)
         avatar capsule rotation completed (NOT DONE - Bullet's capsule shape is not the solution)
-Enable vehicle border crossings (at least as poorly as ODE)
-        Terrain skirts
-        Avatar created in previous region and not new region when crossing border
-        Vehicle recreated in new sim at small Z value (offset from root value?) (DONE)
 Vehicle script tuning/debugging
         Avanti speed script
         Weapon shooter script
-Add material densities to the material types
+Move material definitions (friction, ...) into simulator.
+Add material densities to the material types.
+Terrain detail: double terrain mesh detail
+One sided meshes? Should terrain be built into a closed shape?
+        When meshes get partially wedged into the terrain, they cannot push themselves out.
+        It is possible that Bullet processes collisions whether entering or leaving a mesh.
+        Ref: http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?t=4869
 
 VEHICLES TODO LIST:
 =================================================
@@ -65,6 +66,7 @@ Vehicle attributes are not restored when a vehicle is rezzed on region creation
 
 GENERAL TODO LIST:
 =================================================
+Add a sanity check for PIDTarget location.
 Level-of-detail for mesh creation. Prims with circular interiors require lod of 32.
         Is much saved with lower LODs? At the moment, all set to 32.
 Collisions are inconsistant: arrows are supposed to hit and report collision. Often don't.
diff --git a/OpenSim/Region/Physics/BulletSPlugin/Properties/AssemblyInfo.cs b/OpenSim/Region/Physics/BulletSPlugin/Properties/AssemblyInfo.cs
index d240c71..02b03a8 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/Properties/AssemblyInfo.cs
@@ -30,4 +30,4 @@ using System.Runtime.InteropServices;
 //      Revision
 //
 [assembly: AssemblyVersion("0.7.6.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+
diff --git a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Properties/AssemblyInfo.cs b/OpenSim/Region/Physics/ConvexDecompositionDotNet/Properties/AssemblyInfo.cs
index cafd7f4..f611b9a 100644
--- a/OpenSim/Region/Physics/ConvexDecompositionDotNet/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/Physics/ConvexDecompositionDotNet/Properties/AssemblyInfo.cs
@@ -33,4 +33,4 @@ using System.Runtime.InteropServices;
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
 [assembly: AssemblyVersion("0.7.6.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+
diff --git a/OpenSim/Region/Physics/Meshing/Properties/AssemblyInfo.cs b/OpenSim/Region/Physics/Meshing/Properties/AssemblyInfo.cs
index bd70296..3de061a 100644
--- a/OpenSim/Region/Physics/Meshing/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/Physics/Meshing/Properties/AssemblyInfo.cs
@@ -30,4 +30,4 @@ using System.Runtime.InteropServices;
 //      Revision
 //
 [assembly: AssemblyVersion("0.7.6.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+