1 files changed, 60 insertions, 6 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs b/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
index 8ebb532..f953c1e 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSPhysObject.cs
@@ -99,6 +99,9 @@ public abstract class BSPhysObject : PhysicsActor
         CollisionAccumulation = 0;
         ColliderIsMoving = false;
         CollisionScore = 0;
+
+        // All axis free.
+        LockedAxis = LockedAxisFree;
     }
 
     // Tell the object to clean up.
@@ -172,7 +175,8 @@ public abstract class BSPhysObject : PhysicsActor
         MaterialAttributes matAttrib = BSMaterials.GetAttributes(Material, false);
         Friction = matAttrib.friction;
         Restitution = matAttrib.restitution;
-        Density = matAttrib.density;
+        Density = matAttrib.density / BSParam.DensityScaleFactor;
+        DetailLog("{0},{1}.SetMaterial,Mat={2},frict={3},rest={4},den={5}", LocalID, TypeName, Material, Friction, Restitution, Density);
     }
 
     // Stop all physical motion.
@@ -220,6 +224,9 @@ public abstract class BSPhysObject : PhysicsActor
     //    computed center-of-mass (like in linksets).
     public OMV.Vector3? UserSetCenterOfMass { get; set; }
 
+    public OMV.Vector3 LockedAxis { get; set; } // zero means locked. one means free.
+    public readonly OMV.Vector3 LockedAxisFree = new OMV.Vector3(1f, 1f, 1f);  // All axis are free
+
     #region Collisions
 
     // Requested number of milliseconds between collision events. Zero means disabled.
@@ -416,9 +423,7 @@ public abstract class BSPhysObject : PhysicsActor
         {
             // Clean out any existing action
             UnRegisterPreStepAction(op, id);
-
             RegisteredPrestepActions[identifier] = actn;
-
             PhysicsScene.BeforeStep += actn;
         }
         DetailLog("{0},BSPhysObject.RegisterPreStepAction,id={1}", LocalID, identifier);
@@ -464,9 +469,7 @@ public abstract class BSPhysObject : PhysicsActor
         {
             // Clean out any existing action
             UnRegisterPostStepAction(op, id);
-
             RegisteredPoststepActions[identifier] = actn;
-
             PhysicsScene.AfterStep += actn;
         }
         DetailLog("{0},BSPhysObject.RegisterPostStepAction,id={1}", LocalID, identifier);
@@ -503,7 +506,58 @@ public abstract class BSPhysObject : PhysicsActor
         }
         DetailLog("{0},BSPhysObject.UnRegisterAllPostStepActions,", LocalID);
     }
-    
+
+    // When an update to the physical properties happens, this event is fired to let
+    //    different actors to modify the update before it is passed around
+    public delegate void PreUpdatePropertyAction(ref EntityProperties entprop);
+    public event PreUpdatePropertyAction OnPreUpdateProperty;
+    protected void TriggerPreUpdatePropertyAction(ref EntityProperties entprop)
+    {
+        PreUpdatePropertyAction actions = OnPreUpdateProperty;
+        if (actions != null)
+            actions(ref entprop);
+    }
+
+    private Dictionary<string, PreUpdatePropertyAction> RegisteredPreUpdatePropertyActions = new Dictionary<string, PreUpdatePropertyAction>();
+    public void RegisterPreUpdatePropertyAction(string identifier, PreUpdatePropertyAction actn)
+    {
+        lock (RegisteredPreUpdatePropertyActions)
+        {
+            // Clean out any existing action
+            UnRegisterPreUpdatePropertyAction(identifier);
+            RegisteredPreUpdatePropertyActions[identifier] = actn;
+            OnPreUpdateProperty += actn;
+        }
+        DetailLog("{0},BSPhysObject.RegisterPreUpdatePropertyAction,id={1}", LocalID, identifier);
+    }
+    public bool UnRegisterPreUpdatePropertyAction(string identifier)
+    {
+        bool removed = false;
+        lock (RegisteredPreUpdatePropertyActions)
+        {
+            if (RegisteredPreUpdatePropertyActions.ContainsKey(identifier))
+            {
+                OnPreUpdateProperty -= RegisteredPreUpdatePropertyActions[identifier];
+                RegisteredPreUpdatePropertyActions.Remove(identifier);
+                removed = true;
+            }
+        }
+        DetailLog("{0},BSPhysObject.UnRegisterPreUpdatePropertyAction,id={1},removed={2}", LocalID, identifier, removed);
+        return removed;
+    }
+    public void UnRegisterAllPreUpdatePropertyActions()
+    {
+        lock (RegisteredPreUpdatePropertyActions)
+        {
+            foreach (KeyValuePair<string, PreUpdatePropertyAction> kvp in RegisteredPreUpdatePropertyActions)
+            {
+                OnPreUpdateProperty -= kvp.Value;
+            }
+            RegisteredPreUpdatePropertyActions.Clear();
+        }
+        DetailLog("{0},BSPhysObject.UnRegisterAllPreUpdatePropertyAction,", LocalID);
+    }
+
     #endregion // Per Simulation Step actions
 
     // High performance detailed logging routine used by the physical objects.