BulletSim: delay adding a scene presence to the list of presences

until it is fully configured. Another addition to fixing the
collisions stopping problem.

OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs

@@ -75,9 +75,10 @@ public sealed class BSCharacter : BSPhysObject
     // Avatars are always complete (in the physics engine sense)
     public override bool IsIncomplete { get { return false; } }
 
+    // 'activate' is called with this character after all initialization is complete
     public BSCharacter(
-            uint localID, String avName, BSScene parent_scene, OMV.Vector3 pos, OMV.Vector3 vel, OMV.Vector3 size, bool isFlying)
-
+            uint localID, String avName, BSScene parent_scene,
+            OMV.Vector3 pos, OMV.Vector3 vel, OMV.Vector3 size, bool isFlying, Action<BSCharacter> activate)
             : base(parent_scene, localID, avName, "BSCharacter")
     {
         _physicsActorType = (int)ActorTypes.Agent;
@@ -124,6 +125,9 @@ public sealed class BSCharacter : BSPhysObject
             SetPhysicalProperties();
 
             IsInitialized = true;
+
+            if (activate != null)
+                activate(this);
         });
         return;
     }
@@ -472,12 +476,13 @@ public sealed class BSCharacter : BSPhysObject
         }
     }
 
+    // Force the setting of velocity. Called at taint time.
+    // Exists so that setting force by anyone can be overridden by a subcless.
     public override OMV.Vector3 ForceVelocity {
         get { return RawVelocity; }
         set {
             PhysScene.AssertInTaintTime("BSCharacter.ForceVelocity");
-//                Util.PrintCallStack();
-            DetailLog("{0}: set ForceVelocity = {1}", LocalID, value);
+            DetailLog("{0},BSCharacter.setForceVelocity,call,vel={1}", LocalID, value);
 
             RawVelocity = value;
             PhysScene.PE.SetLinearVelocity(PhysBody, RawVelocity);

OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs

@@ -71,6 +71,11 @@ public abstract class BSPhysObject : PhysicsActor
     {
     }
     protected BSPhysObject(BSScene parentScene, uint localID, string name, string typeName)
+    {
+        InitializePhysObject(parentScene, localID, name, typeName);
+    }
+
+    protected void InitializePhysObject(BSScene parentScene, uint localID, string name, string typeName)
     {
         IsInitialized = false;
 
@@ -119,6 +124,8 @@ public abstract class BSPhysObject : PhysicsActor
     // Tell the object to clean up.
     public virtual void Destroy()
     {
+        SubscribedEventsMs = 0;
+
         PhysicalActors.Enable(false);
         PhysScene.TaintedObject(LocalID, "BSPhysObject.Destroy", delegate()
         {
@@ -455,6 +462,7 @@ public abstract class BSPhysObject : PhysicsActor
     // Return 'true' if a collision was processed and should be sent up.
     // Return 'false' if this object is not enabled/subscribed/appropriate for or has already seen this collision.
     // Called at taint time from within the Step() function
+    // Both 'CollisionLock' and 'PhysObjects' are locked when this is called by 'SendCollisions'.
     public delegate bool CollideCall(uint collidingWith, BSPhysObject collidee, OMV.Vector3 contactPoint, OMV.Vector3 contactNormal, float pentrationDepth);
     public virtual bool Collide(uint collidingWith, BSPhysObject collidee,
                     OMV.Vector3 contactPoint, OMV.Vector3 contactNormal, float pentrationDepth)
@@ -545,7 +553,7 @@ public abstract class BSPhysObject : PhysicsActor
     // Subscribe for collision events.
     // Parameter is the millisecond rate the caller wishes collision events to occur.
     public override void SubscribeEvents(int ms) {
-        // DetailLog("{0},{1}.SubscribeEvents,subscribing,ms={2}", LocalID, TypeName, ms);
+        DetailLog("{0},{1}.SubscribeEvents,subscribing,ms={2}", LocalID, TypeName, ms);
         SubscribedEventsMs = ms;
         if (ms > 0)
         {

OpenSim/Region/Physics/BulletSPlugin/BSScene.cs

@@ -477,16 +477,19 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
 
         if (!m_initialized) return null;
 
-        BSCharacter actor = new BSCharacter(localID, avName, this, position, velocity, size, isFlying);
-        lock (PhysObjects)
-            PhysObjects.Add(localID, actor);
-
-        // TODO: Remove kludge someday.
-        // We must generate a collision for avatars whether they collide or not.
-        // This is required by OpenSim to update avatar animations, etc.
-        lock (AvatarsInSceneLock)
-            AvatarsInScene.Add(actor);
+        BSCharacter actor = new BSCharacter(localID, avName, this, position, velocity, size, isFlying,
+            (aa) =>
+            {
+                // While the actor exists, don't add it to the active avatar lists until completely initialized
+                lock (PhysObjects)
+                    PhysObjects.Add(localID, aa);
 
+                // TODO: Remove kludge someday.
+                // We must generate a collision for avatars whether they collide or not.
+                // This is required by OpenSim to update avatar animations, etc.
+                lock (AvatarsInSceneLock)
+                    AvatarsInScene.Add(aa);
+            });
         return actor;
     }
 
@@ -830,10 +833,8 @@ public sealed class BSScene : PhysicsScene, IPhysicsParameters
             if (collider.Collide(collidingWith, collidee, collidePoint, collideNormal, penetration))
             {
                 // If a collision was 'good', remember to send it to the simulator
-                lock (CollisionLock)
-                {
-                    ObjectsWithCollisions.Add(collider);
-                }
+                // Note that 'CollisionLock' was locked before the call to 'SendCollsions'
+                ObjectsWithCollisions.Add(collider);
             }
         }