3 files changed, 65 insertions, 55 deletions

diff --git a/OpenSim/Region/Environment/Scenes/InnerScene.cs b/OpenSim/Region/Environment/Scenes/InnerScene.cs
index 63f7f17..b03ffe2 100644
--- a/OpenSim/Region/Environment/Scenes/InnerScene.cs
+++ b/OpenSim/Region/Environment/Scenes/InnerScene.cs
@@ -204,18 +204,45 @@ namespace OpenSim.Region.Environment.Scenes
         /// Add an object to the scene.
         /// </summary>
         /// <param name="sceneObject"></param>
-        public void AddSceneObject(SceneObjectGroup sceneObject)
+        /// <returns>true if the object was added, false if an object with the same uuid was already in the scene
+        /// </returns>
+        public bool AddSceneObject(SceneObjectGroup sceneObject)
         {
-            if (!Entities.ContainsKey(sceneObject.UUID))
+            lock (Entities)
             {
-                //  QuadTree.AddSceneObject(sceneObject);
-                lock (Entities)
+                if (!Entities.ContainsKey(sceneObject.UUID))
                 {
+                    //  QuadTree.AddSceneObject(sceneObject);
                     Entities.Add(sceneObject.UUID, sceneObject);
+                    m_numPrim++;
+                    
+                    return true;
                 }
-                m_numPrim++;
+                
+                return false;
             }
         }
+        
+        /// <summary>
+        /// Delete an object from the scene
+        /// </summary>
+        /// <param name="sceneObject"></param>
+        /// <returns>true if the object was deleted, false if there was no object to delete</returns>
+        public bool DeleteSceneObject(LLUUID uuid)
+        {
+            lock (Entities)
+            {
+                if (Entities.ContainsKey(uuid))
+                {
+                    Entities.Remove(uuid);
+                    m_numPrim--;
+                    
+                    return true;
+                }
+            }
+            
+            return false;
+        }
 
         /// <summary>
         /// Add an entity to the list of prims to process on the next update
@@ -376,7 +403,6 @@ namespace OpenSim.Region.Environment.Scenes
         // To LocalId or LLUUID, *THAT* is the question. How now Brown LLUUID??
         public void DetachSingleAttachmentToInv(LLUUID itemID, IClientAPI remoteClient)
         {
-
             if (itemID == LLUUID.Zero) // If this happened, someone made a mistake....
                 return;
 
@@ -392,11 +418,10 @@ namespace OpenSim.Region.Environment.Scenes
                         group.DetachToInventoryPrep();
                         m_log.Debug("[DETACH]: Saving attachpoint: " + ((uint)group.GetAttachmentPoint()).ToString());
                         m_parentScene.updateKnownAsset(remoteClient, group, group.GetFromAssetID(),group.OwnerID);
-                        m_parentScene.DeleteSceneObjectGroup(group);
+                        m_parentScene.DeleteSceneObject(group);
                     }
                 }
             }
-
         }
 
         public void AttachObject(IClientAPI remoteClient, uint objectLocalID, uint AttachmentPt, LLQuaternion rot, LLVector3 attachPos)
diff --git a/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs b/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
index 816b01d..82e112f 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.Inventory.cs
@@ -1251,14 +1251,12 @@ namespace OpenSim.Region.Environment.Scenes
                         }
                     }
 
-
                     if (permissionToDelete)
                     {
-                        DeleteSceneObjectGroup(objectGroup);
+                        DeleteSceneObject(objectGroup);
                     }
                 }
-            }
-            
+            }           
         }
 
         public void updateKnownAsset(IClientAPI remoteClient, SceneObjectGroup grp, LLUUID assetID, LLUUID agentID)
@@ -1790,7 +1788,7 @@ namespace OpenSim.Region.Environment.Scenes
 
                         returnobjects[i] = null;
 
-                        DeleteSceneObjectGroup(ObjectDeleting);
+                        DeleteSceneObject(ObjectDeleting);
                         ObjectDeleting = null;
                     }
                     else
diff --git a/OpenSim/Region/Environment/Scenes/Scene.cs b/OpenSim/Region/Environment/Scenes/Scene.cs
index bbe8bd9..e30813c 100644
--- a/OpenSim/Region/Environment/Scenes/Scene.cs
+++ b/OpenSim/Region/Environment/Scenes/Scene.cs
@@ -1335,22 +1335,40 @@ namespace OpenSim.Region.Environment.Scenes
         public void AddSceneObject(SceneObjectGroup sceneObject)
         {
             m_innerScene.AddSceneObject(sceneObject);
-        }
+        }        
 
         /// <summary>
-        /// Remove an object from the scene
+        /// Delete this object from the scene.
         /// </summary>
-        /// <param name="sceneObject"></param>
-        public void RemoveSceneObject(SceneObjectGroup sceneObject)
+        /// <param name="group"></param>
+        public void DeleteSceneObject(SceneObjectGroup group)
         {
-            if (Entities.ContainsKey(sceneObject.UUID))
+            SceneObjectPart rootPart = (group).GetChildPart(group.UUID);
+            if (rootPart.PhysActor != null)
+            {
+                PhysicsScene.RemovePrim(rootPart.PhysActor);
+                rootPart.PhysActor = null;
+            }
+
+            m_storageManager.DataStore.RemoveObject(group.UUID, m_regInfo.RegionID);
+            group.DeleteGroup();
+
+            if (m_innerScene.DeleteSceneObject(group.UUID))
             {
-                EventManager.TriggerObjectBeingRemovedFromScene(sceneObject);
-                Entities.Remove(sceneObject.UUID);
+                EventManager.TriggerObjectBeingRemovedFromScene(group);
                 EventManager.TriggerParcelPrimCountTainted();
-                m_innerScene.RemoveAPrimCount();
             }
-        }
+            
+            group.DeleteParts();
+
+            // In case anybody else retains a reference to this group, signal deletion by changing the name
+            // to null.  We can't zero out the UUID because this is taken from the root part, which has already
+            // been removed.
+            // FIXME: This is a really poor temporary solution, since it still leaves plenty of scope for race
+            // conditions where a user deletes an entity while it is being stored.  Really, the update
+            // code needs a redesign.
+            group.Name = null;
+        }        
 
         public void LoadPrimsFromXml(string fileName, bool newIdsFlag, LLVector3 loadOffset)
         {
@@ -1411,7 +1429,7 @@ namespace OpenSim.Region.Environment.Scenes
                 // We remove the object here
                 try
                 {
-                    DeleteSceneObjectGroup(grp);
+                    DeleteSceneObject(grp);
                 }
                 catch (Exception)
                 {
@@ -1473,7 +1491,7 @@ namespace OpenSim.Region.Environment.Scenes
                     // We remove the object here
                     try
                     {
-                        DeleteSceneObjectGroup(grp);
+                        DeleteSceneObject(grp);
                     }
                     catch (Exception)
                     {
@@ -3142,37 +3160,6 @@ namespace OpenSim.Region.Environment.Scenes
         }
 
         /// <summary>
-        /// Delete this object from the scene.
-        /// </summary>
-        /// <param name="group"></param>
-        public void DeleteSceneObjectGroup(SceneObjectGroup group)
-        {
-            SceneObjectPart rootPart = (group).GetChildPart(group.UUID);
-            if (rootPart.PhysActor != null)
-            {
-                PhysicsScene.RemovePrim(rootPart.PhysActor);
-                rootPart.PhysActor = null;
-            }
-
-            m_storageManager.DataStore.RemoveObject(group.UUID, m_regInfo.RegionID);
-            group.DeleteGroup();
-
-            lock (Entities)
-            {
-                RemoveSceneObject(group);
-            }
-            group.DeleteParts();
-
-            // In case anybody else retains a reference to this group, signal deletion by changing the name
-            // to null.  We can't zero out the UUID because this is taken from the root part, which has already
-            // been removed.
-            // FIXME: This is a really poor temporary solution, since it still leaves plenty of scope for race
-            // conditions where a user deletes an entity while it is being stored.  Really, the update
-            // code needs a redesign.
-            group.Name = null;
-        }
-
-        /// <summary>
         ///
         /// </summary>
         /// <param name="action"></param>