From 6e39cc316f502855a89c51775e7394b73135ab86 Mon Sep 17 00:00:00 2001
From: Robert Adams
Date: Tue, 10 Sep 2013 17:32:01 -0700
Subject: BulletSim: add ClearCollisionProxyCache function to API. Add proxy
 cache clearing when some properties are changed. This fixes a problem where
 objects would stop colliding of they were moved with setPosition mulitple
 times.

---
 OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs')

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
index ff2b497..17ebed2 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSAPIXNA.cs
@@ -169,6 +169,19 @@ private sealed class BulletConstraintXNA : BulletConstraint
         return true;
     }
 
+    public override bool ClearCollisionProxyCache(BulletWorld pWorld, BulletBody pBody)
+    {
+        DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
+        RigidBody body = ((BulletBodyXNA)pBody).rigidBody;
+        CollisionObject collisionObject = ((BulletBodyXNA)pBody).body;
+        if (body != null && collisionObject != null && collisionObject.GetBroadphaseHandle() != null)
+        {
+            world.RemoveCollisionObject(collisionObject);
+            world.AddCollisionObject(collisionObject);
+        }
+        return true;
+    }
+
     public override bool AddConstraintToWorld(BulletWorld pWorld, BulletConstraint pConstraint, bool pDisableCollisionsBetweenLinkedObjects)
     {
         DiscreteDynamicsWorld world = (pWorld as BulletWorldXNA).world;
-- 
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