4 files changed, 70 insertions, 26 deletions

diff --git a/OpenSim/Region/Framework/Scenes/EventManager.cs b/OpenSim/Region/Framework/Scenes/EventManager.cs
index 473920e..9f74b2a 100644
--- a/OpenSim/Region/Framework/Scenes/EventManager.cs
+++ b/OpenSim/Region/Framework/Scenes/EventManager.cs
@@ -205,6 +205,12 @@ namespace OpenSim.Region.Framework.Scenes
         public delegate void OnMakeRootAgentDelegate(ScenePresence presence);
         public event OnMakeRootAgentDelegate OnMakeRootAgent;
 
+        /// <summary>
+        /// Triggered when an object or attachment enters a scene
+        /// </summary>
+        public event OnIncomingSceneObjectDelegate OnIncomingSceneObject;
+        public delegate void OnIncomingSceneObjectDelegate(SceneObjectGroup so);        
+
         public delegate void NewInventoryItemUploadComplete(UUID avatarID, UUID assetID, string name, int userlevel);
 
         public event NewInventoryItemUploadComplete OnNewInventoryItemUploadComplete;
@@ -407,7 +413,7 @@ namespace OpenSim.Region.Framework.Scenes
                     }
                 }
             }
-        }
+        }     
 
         public void TriggerGetScriptRunning(IClientAPI controllingClient, UUID objectID, UUID itemID)
         {
@@ -1206,6 +1212,27 @@ namespace OpenSim.Region.Framework.Scenes
             }            
         }
 
+        public void TriggerOnIncomingSceneObject(SceneObjectGroup so)
+        {
+            OnIncomingSceneObjectDelegate handlerIncomingSceneObject = OnIncomingSceneObject;
+            if (handlerIncomingSceneObject != null)
+            {
+                foreach (OnIncomingSceneObjectDelegate d in handlerIncomingSceneObject.GetInvocationList())
+                {
+                    try
+                    {
+                        d(so);
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat(
+                            "[EVENT MANAGER]: Delegate for TriggerOnIncomingSceneObject failed - continuing.  {0} {1}", 
+                            e.Message, e.StackTrace);
+                    }
+                }                
+            }
+        }
+
         public void TriggerOnRegisterCaps(UUID agentID, Caps caps)
         {          
             RegisterCapsEvent handlerRegisterCaps = OnRegisterCaps;
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index f109589..669720a 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -2239,9 +2239,14 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
 
+        /// <summary>
+        /// Called when objects or attachments cross the border between regions.
+        /// </summary>
+        /// <param name="sog"></param>
+        /// <returns></returns>
         public bool IncomingCreateObject(ISceneObject sog)
         {
-            //m_log.Debug(" >>> IncomingCreateObject <<< " + ((SceneObjectGroup)sog).AbsolutePosition + " deleted? " + ((SceneObjectGroup)sog).IsDeleted);
+            //m_log.Debug(" >>> IncomingCreateObject(sog) <<< " + ((SceneObjectGroup)sog).AbsolutePosition + " deleted? " + ((SceneObjectGroup)sog).IsDeleted);
             SceneObjectGroup newObject;
             try
             {
@@ -2258,7 +2263,12 @@ namespace OpenSim.Region.Framework.Scenes
                 m_log.DebugFormat("[SCENE]: Problem adding scene object {0} in {1} ", sog.UUID, RegionInfo.RegionName);
                 return false;
             }
+            
             newObject.RootPart.ParentGroup.CreateScriptInstances(0, false, DefaultScriptEngine, 1);
+
+            // Do this as late as possible so that listeners have full access to the incoming object
+            EventManager.TriggerOnIncomingSceneObject(newObject);
+            
             return true;
         }
 
@@ -2270,6 +2280,8 @@ namespace OpenSim.Region.Framework.Scenes
         /// <returns>False</returns>
         public virtual bool IncomingCreateObject(UUID userID, UUID itemID)
         {
+            //m_log.DebugFormat(" >>> IncomingCreateObject(userID, itemID) <<< {0} {1}", userID, itemID);
+            
             ScenePresence sp = GetScenePresence(userID);
             if (sp != null)
             {
@@ -2307,7 +2319,7 @@ namespace OpenSim.Region.Framework.Scenes
             foreach (SceneObjectPart p in sceneObject.Children.Values)
                 p.LocalId = 0;
 
-            if ((sceneObject.RootPart.Shape.PCode == (byte)PCode.Prim) && (sceneObject.RootPart.Shape.State != 0)) // Attachment
+            if (sceneObject.IsAttachmentCheckFull()) // Attachment
             {
                 sceneObject.RootPart.AddFlag(PrimFlags.TemporaryOnRez);
                 sceneObject.RootPart.AddFlag(PrimFlags.Phantom);
@@ -2332,29 +2344,23 @@ namespace OpenSim.Region.Framework.Scenes
 
                     //RootPrim.SetParentLocalId(parentLocalID);
 
-                    m_log.DebugFormat("[ATTACHMENT]: Received " +
-                                "attachment {0}, inworld asset id {1}",
-                                //grp.RootPart.LastOwnerID.ToString(),
-                                grp.GetFromItemID(),
-                                grp.UUID.ToString());
+                    m_log.DebugFormat(
+                        "[ATTACHMENT]: Received attachment {0}, inworld asset id {1}", grp.GetFromItemID(), grp.UUID);
 
                     //grp.SetFromAssetID(grp.RootPart.LastOwnerID);
-                    m_log.DebugFormat("[ATTACHMENT]: Attach " +
-                            "to avatar {0} at position {1}",
-                            sp.UUID.ToString(), grp.AbsolutePosition);
-                    AttachObject(sp.ControllingClient,
-                            grp.LocalId, (uint)0,
-                            grp.GroupRotation,
-                            grp.AbsolutePosition, false);
+                    m_log.DebugFormat(
+                        "[ATTACHMENT]: Attach to avatar {0} at position {1}", sp.UUID, grp.AbsolutePosition);
+                    
+                    AttachObject(
+                        sp.ControllingClient, grp.LocalId, (uint)0, grp.GroupRotation, grp.AbsolutePosition, false);
                     RootPrim.RemFlag(PrimFlags.TemporaryOnRez);
-                    grp.SendGroupFullUpdate();
+                    grp.SendGroupFullUpdate();                    
                 }
                 else
                 {
                     RootPrim.RemFlag(PrimFlags.TemporaryOnRez);
                     RootPrim.AddFlag(PrimFlags.TemporaryOnRez);
                 }
-
             }
             else
             {
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 8c56870..af46659 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -268,7 +268,16 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        private bool IsAttachmentCheckFull()
+        /// <summary>
+        /// Check both the attachment property and the relevant properties of the underlying root part.
+        /// </summary>
+        /// This is necessary in some cases, particularly when a scene object has just crossed into a region and doesn't
+        /// have the IsAttachment property yet checked.
+        /// 
+        /// FIXME: However, this should be fixed so that this property
+        /// propertly reflects the underlying status.
+        /// <returns></returns>
+        public bool IsAttachmentCheckFull()
         {
             return (IsAttachment || (m_rootPart.Shape.PCode == 9 && m_rootPart.Shape.State != 0));
         }
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index 29f607b..b8a937a 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -104,6 +104,14 @@ namespace OpenSim.Region.Framework.Scenes
         }
         protected ScenePresenceAnimator m_animator;
 
+        /// <value>
+        /// The scene objects attached to this avatar.  Do not change this list directly - use methods such as
+        /// AddAttachment() and RemoveAttachment().  Lock this list when performing any read operations upon it.
+        /// </value>
+        public List<SceneObjectGroup> Attachments
+        {
+            get { return m_attachments; }
+        }
         protected List<SceneObjectGroup> m_attachments = new List<SceneObjectGroup>();
 
         private Dictionary<UUID, ScriptControllers> scriptedcontrols = new Dictionary<UUID, ScriptControllers>();
@@ -219,11 +227,6 @@ namespace OpenSim.Region.Framework.Scenes
 
         protected AvatarAppearance m_appearance;
 
-        public List<SceneObjectGroup> Attachments
-        {
-            get { return m_attachments; }
-        }
-
         // neighbouring regions we have enabled a child agent in
         // holds the seed cap for the child agent in that region
         private Dictionary<ulong, string> m_knownChildRegions = new Dictionary<ulong, string>();
@@ -3210,8 +3213,7 @@ namespace OpenSim.Region.Framework.Scenes
             m_physicsActor.OnCollisionUpdate += PhysicsCollisionUpdate;
             m_physicsActor.OnOutOfBounds += OutOfBoundsCall; // Called for PhysicsActors when there's something wrong
             m_physicsActor.SubscribeEvents(500);
-            m_physicsActor.LocalID = LocalId;
-            
+            m_physicsActor.LocalID = LocalId;            
         }
 
         private void OutOfBoundsCall(Vector3 pos)
@@ -3221,7 +3223,7 @@ namespace OpenSim.Region.Framework.Scenes
 
             //AddToPhysicalScene(flying);
             if (ControllingClient != null)
-                ControllingClient.SendAgentAlertMessage("Physics is having a problem with your avatar.  You may not be able to move until you relog.",true);
+                ControllingClient.SendAgentAlertMessage("Physics is having a problem with your avatar.  You may not be able to move until you relog.", true);
         }
 
         // Event called by the physics plugin to tell the avatar about a collision.