From 10152815ac8f15091720783b0bd4473f41af0d6b Mon Sep 17 00:00:00 2001
From: Robert Adams <Robert.Adams@intel.com>
Date: Wed, 11 Sep 2013 16:48:15 -0700
Subject: [PATCH] BulletSim: remove collision cache clearing logic for physical
 objects. This fixes constraints from getting messed up when properties
 change.

---
 OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
index 47df611de5..f89b376543 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
@@ -302,13 +302,16 @@ public abstract class BSPhysObject : PhysicsActor
     {
         if (PhysBody.HasPhysicalBody)
         {
-            // Clear the collision cache since we've changed some properties.
-            PhysScene.PE.ClearCollisionProxyCache(PhysScene.World, PhysBody);
             if (IsPhysical)
             {
                 // Physical objects might need activating
                 PhysScene.PE.Activate(PhysBody, forceIt);
             }
+            else
+            {
+                // Clear the collision cache since we've changed some properties.
+                PhysScene.PE.ClearCollisionProxyCache(PhysScene.World, PhysBody);
+            }
         }
     }