BulletSim: fix race condition when creating very large mega-regions.

The symptom was exceptions while creating physical terrain.
Reduce default terrain mesh magnification to 2 from 3 because the
higher resolution uses a lot of memory and doesn't solve the terrain
smoothness for vehicles.
Added comments here and there and improved some debugging log messages.

1 files changed, 2 insertions, 2 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
index e208d3a..90c2d9c 100644
--- a/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSCharacter.cs
@@ -479,7 +479,7 @@ public sealed class BSCharacter : BSPhysObject
             // The character is out of the known/simulated area.
             // Force the avatar position to be within known. ScenePresence will use the position
             //    plus the velocity to decide if the avatar is moving out of the region.
-            RawPosition = PhysicsScene.TerrainManager.ClampPositionIntoKnownTerrain(RawPosition);

+            RawPosition = PhysicsScene.TerrainManager.ClampPositionIntoKnownTerrain(RawPosition);
             DetailLog("{0},BSCharacter.PositionSanityCheck,notWithinKnownTerrain,clampedPos={1}", LocalID, RawPosition);
             return true;
         }
@@ -898,7 +898,7 @@ public sealed class BSCharacter : BSPhysObject
         // Do some sanity checking for the avatar. Make sure it's above ground and inbounds.
         if (PositionSanityCheck(true))
         {
-            DetailLog("{0},BSCharacter.UpdateProperties,updatePosForSanity,pos={1}", LocalID, _position);

+            DetailLog("{0},BSCharacter.UpdateProperties,updatePosForSanity,pos={1}", LocalID, _position);
             entprop.Position = _position;
         }