BulletSim: implementation of linkset center-of-mass.

Default off, for the moment, until more testing.
Add separate thread and center-of-mass flags to OpenSimDefaults.ini.
Clean up comments in OpenSimDefaults.ini.

1 files changed, 7 insertions, 4 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPrimLinkable.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPrimLinkable.cs
index 7058646..1fbcfcc 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPrimLinkable.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPrimLinkable.cs
@@ -160,10 +160,13 @@ public class BSPrimLinkable : BSPrimDisplaced
     protected override void MakeDynamic(bool makeStatic)
     {
         base.MakeDynamic(makeStatic);
-        if (makeStatic)
-            Linkset.MakeStatic(this);
-        else
-            Linkset.MakeDynamic(this);
+        if (Linkset != null)    // null can happen during initialization
+        {
+            if (makeStatic)
+                Linkset.MakeStatic(this);
+            else
+                Linkset.MakeDynamic(this);
+        }
     }
 
     // Body is being taken apart. Remove physical dependencies and schedule a rebuild.