BulletSim: Reduce idle region physics overhead where there are MANY

    static objects by more restrictive selection of objects that collide
    with static objects.
Rename collision mask fuctions from 'filter' to 'group' so it is clear
    what is being set.
Rename BulletSimAPI.SetCollisionFilterMask() to SetCollisionGroupMask to match above.
Restore passing of time step to linear and angular motion component routines.
Use buffering vehicle physical parameter get/set routines consistantly.
Make range enforcement clearer by using ClampInRange() function for parameter setting.
Remove commented out experimental vehicle calculations.

1 files changed, 2 insertions, 2 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSTerrainMesh.cs b/OpenSim/Region/Physics/BulletSPlugin/BSTerrainMesh.cs
index 7e93ab4..6ce767d 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSTerrainMesh.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSTerrainMesh.cs
@@ -130,8 +130,8 @@ public sealed class BSTerrainMesh : BSTerrainPhys
         // Redo its bounding box now that it is in the world
         BulletSimAPI.UpdateSingleAabb2(PhysicsScene.World.ptr, m_terrainBody.ptr);
 
-        BulletSimAPI.SetCollisionFilterMask2(m_terrainBody.ptr,
-                            (uint)CollisionFilterGroups.TerrainFilter,
+        BulletSimAPI.SetCollisionGroupMask2(m_terrainBody.ptr,
+                            (uint)CollisionFilterGroups.TerrainGroup,
                             (uint)CollisionFilterGroups.TerrainMask);
 
         // Make it so the terrain will not move or be considered for movement.