BulletSim: make avatar animations update properly.

It seems that ODE calls the avatar collision handling routine even
if there are no collisions. This causes the animation to be updated.
So, for instance, going from HOVER to FLY is caused by the physics engine
calling the collision routine each frame with 0 collisions.

1 files changed, 13 insertions, 5 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
index f122df9..248d1f2 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPrim.cs
@@ -1326,6 +1326,7 @@ public sealed class BSPrim : PhysicsActor
     }
 
     // I've collided with something
+    CollisionEventUpdate collisionCollection = null;
     public void Collide(uint collidingWith, ActorTypes type, OMV.Vector3 contactPoint, OMV.Vector3 contactNormal, float pentrationDepth)
     {
         // m_log.DebugFormat("{0}: Collide: ms={1}, id={2}, with={3}", LogHeader, _subscribedEventsMs, LocalID, collidingWith);
@@ -1343,11 +1344,18 @@ public sealed class BSPrim : PhysicsActor
         if (nowTime < (_lastCollisionTime + _subscribedEventsMs)) return;
         _lastCollisionTime = nowTime;
 
-        // create the event for the collision
-        Dictionary<uint, ContactPoint> contactPoints = new Dictionary<uint, ContactPoint>();
-        contactPoints.Add(collidingWith, new ContactPoint(contactPoint, contactNormal, pentrationDepth));
-        CollisionEventUpdate args = new CollisionEventUpdate(contactPoints);
-        base.SendCollisionUpdate(args);
+        if (collisionCollection == null)
+            collisionCollection = new CollisionEventUpdate();
+        collisionCollection.AddCollider(collidingWith, new ContactPoint(contactPoint, contactNormal, pentrationDepth));
+    }
+
+    public void SendCollisions()
+    {
+        if (collisionCollection != null)
+        {
+            base.SendCollisionUpdate(collisionCollection);
+            collisionCollection = null;
+        }
     }
 }
 }