BulletSim: add some new runtime setable parameters to match the dll.

OpenSim/Region/Physics/BulletSPlugin/BSScene.cs

@@ -177,6 +177,7 @@ public class BSScene : PhysicsScene, IPhysicsParameters
         if (m_log.IsDebugEnabled)
         {
             m_log.DebugFormat("{0}: Initialize: Setting debug callback for unmanaged code", LogHeader);
+            // the handle is saved to it doesn't get freed after this call
             m_DebugLogCallbackHandle = new BulletSimAPI.DebugLogCallback(BulletLogger);
             BulletSimAPI.SetDebugLogCallback(m_DebugLogCallbackHandle);
         }
@@ -185,7 +186,7 @@ public class BSScene : PhysicsScene, IPhysicsParameters
 
         mesher = meshmerizer;
         // The bounding box for the simulated world
-        Vector3 worldExtent = new Vector3(Constants.RegionSize, Constants.RegionSize, 4096f);
+        Vector3 worldExtent = new Vector3(Constants.RegionSize, Constants.RegionSize, 8192f);
 
         // m_log.DebugFormat("{0}: Initialize: Calling BulletSimAPI.Initialize.", LogHeader);
         m_worldID = BulletSimAPI.Initialize(worldExtent, m_paramsHandle.AddrOfPinnedObject(),
@@ -233,7 +234,7 @@ public class BSScene : PhysicsScene, IPhysicsParameters
         parms.terrainFriction = 0.5f;
         parms.terrainHitFraction = 0.8f;
         parms.terrainRestitution = 0f;
-        parms.avatarFriction = 0.0f;
+        parms.avatarFriction = 0.5f;
         parms.avatarDensity = 60f;
         parms.avatarCapsuleRadius = 0.37f;
         parms.avatarCapsuleHeight = 1.5f; // 2.140599f
@@ -716,6 +717,9 @@ public class BSScene : PhysicsScene, IPhysicsParameters
         // new PhysParameterEntry("CcdSweptSphereRadius", "" ),
         new PhysParameterEntry("ContactProcessingThreshold", "Distance between contacts before doing collision check" ),
 
+        new PhysParameterEntry("Friction", "Set friction parameter for a specific object" ),
+        new PhysParameterEntry("Restitution", "Set restitution parameter for a specific object" ),
+
         new PhysParameterEntry("TerrainFriction", "Factor to reduce movement against terrain surface" ),
         new PhysParameterEntry("TerrainHitFraction", "Distance to measure hit collisions" ),
         new PhysParameterEntry("TerrainRestitution", "Bouncyness" ),
@@ -756,7 +760,7 @@ public class BSScene : PhysicsScene, IPhysicsParameters
             case "defaultdensity": m_params[0].defaultDensity = val; break;
             case "defaultrestitution": m_params[0].defaultRestitution = val; break;
             case "collisionmargin": m_params[0].collisionMargin = val; break;
-            case "gravity": m_params[0].gravity = val; TaintedUpdateParameter(lparm, PhysParameterEntry.APPLY_TO_NONE, val); break;
+            case "gravity": m_params[0].gravity = val; TaintedUpdateParameter(lparm, localID, val); break;
 
             case "lineardamping": UpdateParameterPrims(ref m_params[0].linearDamping, lparm, localID, val); break;
             case "angulardamping": UpdateParameterPrims(ref m_params[0].angularDamping, lparm, localID, val); break;
@@ -767,6 +771,9 @@ public class BSScene : PhysicsScene, IPhysicsParameters
             case "ccdsweptsphereradius": UpdateParameterPrims(ref m_params[0].ccdSweptSphereRadius, lparm, localID, val); break;
             case "contactprocessingthreshold": UpdateParameterPrims(ref m_params[0].contactProcessingThreshold, lparm, localID, val); break;
 
+            case "friction": TaintedUpdateParameter(lparm, localID, val); break;
+            case "restitution": TaintedUpdateParameter(lparm, localID, val); break;
+
             // set a terrain physical feature and cause terrain to be recalculated
             case "terrainfriction": m_params[0].terrainFriction = val; TaintedUpdateParameter("terrain", 0, val); break;
             case "terrainhitfraction": m_params[0].terrainHitFraction = val; TaintedUpdateParameter("terrain", 0, val); break;

OpenSim/Region/Physics/BulletSPlugin/BulletSimAPI.cs

@@ -148,17 +148,17 @@ public static extern uint Initialize(Vector3 maxPosition, IntPtr parms,
                         int maxCollisions, IntPtr collisionArray, 
                         int maxUpdates, IntPtr updateArray);
 
-[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
-public static extern bool UpdateParameter(uint worldID, uint localID,
-                        [MarshalAs(UnmanagedType.LPStr)]string paramCode, float value);
-
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern void SetHeightmap(uint worldID, [MarshalAs(UnmanagedType.LPArray)] float[] heightMap);
 
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern void Shutdown(uint worldID);
 
+[DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
+public static extern bool UpdateParameter(uint worldID, uint localID,
+                        [MarshalAs(UnmanagedType.LPStr)]string paramCode, float value);
 
+// ===============================================================================
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern int PhysicsStep(uint worldID, float timeStep, int maxSubSteps, float fixedTimeStep, 
                         out int updatedEntityCount, 
@@ -240,6 +240,7 @@ public static extern bool HasObject(uint worldID, uint id);
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern bool DestroyObject(uint worldID, uint id);
 
+// ===============================================================================
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern SweepHit ConvexSweepTest(uint worldID, uint id, Vector3 to, float extraMargin);
 
@@ -249,6 +250,7 @@ public static extern RaycastHit RayTest(uint worldID, uint id, Vector3 from, Vec
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern Vector3 RecoverFromPenetration(uint worldID, uint id);
 
+// ===============================================================================
 [DllImport("BulletSim", CallingConvention = CallingConvention.Cdecl), SuppressUnmanagedCodeSecurity]
 public static extern void DumpBulletStatistics();
 

bin/OpenSimDefaults.ini

@@ -846,7 +846,7 @@
     TerrainFriction = 0.50
     TerrainHitFriction = 0.8
     TerrainRestitution = 0
-    AvatarFriction = 0
+    AvatarFriction = 0.5
     AvatarDensity = 60.0
     AvatarCapsuleRadius = 0.37
     AvatarCapsuleHeight = 1.5