15 files changed, 321 insertions, 101 deletions

diff --git a/OpenSim/Region/Framework/Scenes/AsyncInventorySender.cs b/OpenSim/Region/Framework/Scenes/AsyncInventorySender.cs
new file mode 100644
index 0000000..9cb5674
--- /dev/null
+++ b/OpenSim/Region/Framework/Scenes/AsyncInventorySender.cs
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Threading;
+using log4net;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+
+namespace OpenSim.Region.Framework.Scenes
+{
+    class FetchHolder
+    {
+        public IClientAPI Client { get; private set; }
+        public UUID ItemID { get; private set; }
+
+        public FetchHolder(IClientAPI client, UUID itemID)
+        {
+            Client = client;
+            ItemID = itemID;
+        }
+    }
+
+    /// <summary>
+    /// Send FetchInventoryReply information to clients asynchronously on a single thread rather than asynchronously via
+    /// multiple threads.
+    /// </summary>
+    /// <remarks>
+    /// If the main root inventory is right-clicked on a version 1 viewer for a user with a large inventory, a very
+    /// very large number of FetchInventory requests are sent to the simulator.  Each is handled on a separate thread
+    /// by the IClientAPI, but the sheer number of requests overwhelms the number of threads available and ends up
+    /// freezing the inbound packet handling.
+    ///
+    /// This class makes the first FetchInventory packet thread process the queue.  If new requests come
+    /// in while it is processing, then the subsequent threads just add the requests and leave it to the original
+    /// thread to process them.
+    ///
+    /// This might slow down outbound packets but these are limited by the IClientAPI outbound queues
+    /// anyway.
+    ///
+    /// It might be possible to ignore FetchInventory requests altogether, particularly as they are redundant wrt to
+    /// FetchInventoryDescendents requests, but this would require more investigation.
+    /// </remarks>
+    public class AsyncInventorySender
+    {
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        protected Scene m_scene;
+
+        /// <summary>
+        /// Queues fetch requests
+        /// </summary>
+        Queue<FetchHolder> m_fetchHolder = new Queue<FetchHolder>();
+
+        /// <summary>
+        /// Signal whether a queue is currently being processed or not.
+        /// </summary>
+        protected volatile bool m_processing;
+
+        public AsyncInventorySender(Scene scene)
+        {
+            m_processing = false;
+            m_scene = scene;
+        }
+
+        /// <summary>
+        /// Handle a fetch inventory request from the client
+        /// </summary>
+        /// <param name="remoteClient"></param>
+        /// <param name="itemID"></param>
+        /// <param name="ownerID"></param>
+        public void HandleFetchInventory(IClientAPI remoteClient, UUID itemID, UUID ownerID)
+        {
+            lock (m_fetchHolder)
+            {
+//                m_log.DebugFormat(
+//                    "[ASYNC INVENTORY SENDER]: Putting request from {0} for {1} on queue", remoteClient.Name, itemID);
+
+                m_fetchHolder.Enqueue(new FetchHolder(remoteClient, itemID));
+            }
+
+            if (!m_processing)
+            {
+                m_processing = true;
+                ProcessQueue();
+            }
+        }
+
+        /// <summary>
+        /// Process the queue of fetches
+        /// </summary>
+        protected void ProcessQueue()
+        {
+            FetchHolder fh = null;
+
+            while (true)
+            {
+                lock (m_fetchHolder)
+                {
+//                    m_log.DebugFormat("[ASYNC INVENTORY SENDER]: {0} items left to process", m_fetchHolder.Count);
+
+                    if (m_fetchHolder.Count == 0)
+                    {
+                        m_processing = false;
+                        return;
+                    }
+                    else
+                    {
+                        fh = m_fetchHolder.Dequeue();
+                    }
+                }
+
+                if (fh.Client.IsLoggingOut)
+                    continue;
+
+//                m_log.DebugFormat(
+//                    "[ASYNC INVENTORY SENDER]: Handling request from {0} for {1} on queue", fh.Client.Name, fh.ItemID);
+
+                InventoryItemBase item = new InventoryItemBase(fh.ItemID, fh.Client.AgentId);
+                item = m_scene.InventoryService.GetItem(item);
+    
+                if (item != null)
+                    fh.Client.SendInventoryItemDetails(item.Owner, item);
+    
+                 // TODO: Possibly log any failure
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
index f37f94a..30421d4 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
@@ -52,6 +52,11 @@ namespace OpenSim.Region.Framework.Scenes
         protected AsyncSceneObjectGroupDeleter m_asyncSceneObjectDeleter;
 
         /// <summary>
+        /// Allows inventory details to be sent to clients asynchronously
+        /// </summary>
+        protected AsyncInventorySender m_asyncInventorySender;
+
+        /// <summary>
         /// Start all the scripts in the scene which should be started.
         /// </summary>
         public void CreateScriptInstances()
@@ -1328,7 +1333,7 @@ namespace OpenSim.Region.Framework.Scenes
 //            m_log.DebugFormat("[AGENT INVENTORY]: Sending inventory folder contents ({0} nodes) for \"{1}\" to {2} {3}",
 //                contents.Folders.Count + contents.Items.Count, containingFolder.Name, client.FirstName, client.LastName);
 
-            if (containingFolder != null && containingFolder != null)
+            if (containingFolder != null)
             {
                 // If the folder requested contains links, then we need to send those folders first, otherwise the links
                 // will be broken in the viewer.
@@ -1340,15 +1345,25 @@ namespace OpenSim.Region.Framework.Scenes
                         InventoryItemBase linkedItem = InventoryService.GetItem(new InventoryItemBase(item.AssetID));
 
                         // Take care of genuinely broken links where the target doesn't exist
-                        if (linkedItem != null)
-                            linkedItemFolderIdsToSend.Add(linkedItem.Folder);
+                        // HACK: Also, don't follow up links that just point to other links.  In theory this is legitimate,
+                        // but no viewer has been observed to set these up and this is the lazy way of avoiding cycles
+                        // rather than having to keep track of every folder requested in the recursion.
+                        if (linkedItem != null && linkedItem.AssetType != (int)AssetType.Link)
+                        {
+                            // We don't need to send the folder if source and destination of the link are in the same
+                            // folder.
+                            if (linkedItem.Folder != containingFolder.ID)
+                                linkedItemFolderIdsToSend.Add(linkedItem.Folder);
+                        }
                     }
                 }
 
                 foreach (UUID linkedItemFolderId in linkedItemFolderIdsToSend)
                     SendInventoryUpdate(client, new InventoryFolderBase(linkedItemFolderId), false, true);
 
-                client.SendInventoryFolderDetails(client.AgentId, folder.ID, contents.Items, contents.Folders, containingFolder.Version, fetchFolders, fetchItems);
+                client.SendInventoryFolderDetails(
+                    client.AgentId, folder.ID, contents.Items, contents.Folders,
+                    containingFolder.Version, fetchFolders, fetchItems);
             }
         }
 
diff --git a/OpenSim/Region/Framework/Scenes/Scene.PacketHandlers.cs b/OpenSim/Region/Framework/Scenes/Scene.PacketHandlers.cs
index e2d7208..44472b2 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.PacketHandlers.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.PacketHandlers.cs
@@ -461,31 +461,6 @@ namespace OpenSim.Region.Framework.Scenes
                 }
             );
         }
-
-
-        /// <summary>
-        /// Handle a fetch inventory request from the client
-        /// </summary>
-        /// <param name="remoteClient"></param>
-        /// <param name="itemID"></param>
-        /// <param name="ownerID"></param>
-        public void HandleFetchInventory(IClientAPI remoteClient, UUID itemID, UUID ownerID)
-        {
-            if (LibraryService != null && LibraryService.LibraryRootFolder != null && ownerID == LibraryService.LibraryRootFolder.Owner)
-            {
-                //m_log.Debug("request info for library item");
-                return;
-            }
-            
-            InventoryItemBase item = new InventoryItemBase(itemID, remoteClient.AgentId);
-            item = InventoryService.GetItem(item);
-            
-            if (item != null)
-            {
-                remoteClient.SendInventoryItemDetails(ownerID, item);
-            }
-            // else shouldn't we send an alert message?
-        }
         
         /// <summary>
         /// Tell the client about the various child items and folders contained in the requested folder.
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index bdf3d1d..8195a0d 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -583,6 +583,8 @@ namespace OpenSim.Region.Framework.Scenes
             m_asyncSceneObjectDeleter = new AsyncSceneObjectGroupDeleter(this);
             m_asyncSceneObjectDeleter.Enabled = true;
 
+            m_asyncInventorySender = new AsyncInventorySender(this);
+
             #region Region Settings
 
             // Load region settings
@@ -1724,6 +1726,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// <summary>
         /// Loads the World's objects
         /// </summary>
+        /// <param name="regionID"></param>
         public virtual void LoadPrimsFromStorage(UUID regionID)
         {
             LoadingPrims = true;
@@ -2593,8 +2596,10 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 string homeURL = string.Empty;
                 string first = aCircuit.firstname, last = aCircuit.lastname;
+
                 if (aCircuit.ServiceURLs.ContainsKey("HomeURI"))
                     homeURL = aCircuit.ServiceURLs["HomeURI"].ToString();
+
                 if (aCircuit.lastname.StartsWith("@"))
                 {
                     string[] parts = aCircuit.firstname.Split('.');
@@ -2604,6 +2609,7 @@ namespace OpenSim.Region.Framework.Scenes
                         last = parts[1];
                     }
                 }
+
                 uMan.AddUser(aCircuit.AgentID, first, last, homeURL);
             }
         }
@@ -2757,14 +2763,13 @@ namespace OpenSim.Region.Framework.Scenes
 
         public virtual void SubscribeToClientInventoryEvents(IClientAPI client)
         {
-            
             client.OnLinkInventoryItem += HandleLinkInventoryItem;
             client.OnCreateNewInventoryFolder += HandleCreateInventoryFolder;
             client.OnUpdateInventoryFolder += HandleUpdateInventoryFolder;
             client.OnMoveInventoryFolder += HandleMoveInventoryFolder; // 2; //!!
             client.OnFetchInventoryDescendents += HandleFetchInventoryDescendents;
             client.OnPurgeInventoryDescendents += HandlePurgeInventoryDescendents; // 2; //!!
-            client.OnFetchInventory += HandleFetchInventory;
+            client.OnFetchInventory += m_asyncInventorySender.HandleFetchInventory;
             client.OnUpdateInventoryItem += UpdateInventoryItemAsset;
             client.OnCopyInventoryItem += CopyInventoryItem;
             client.OnMoveInventoryItem += MoveInventoryItem;
@@ -2883,13 +2888,12 @@ namespace OpenSim.Region.Framework.Scenes
 
         public virtual void UnSubscribeToClientInventoryEvents(IClientAPI client)
         {
-            
             client.OnCreateNewInventoryFolder -= HandleCreateInventoryFolder;
             client.OnUpdateInventoryFolder -= HandleUpdateInventoryFolder;
             client.OnMoveInventoryFolder -= HandleMoveInventoryFolder; // 2; //!!
             client.OnFetchInventoryDescendents -= HandleFetchInventoryDescendents;
             client.OnPurgeInventoryDescendents -= HandlePurgeInventoryDescendents; // 2; //!!
-            client.OnFetchInventory -= HandleFetchInventory;
+            client.OnFetchInventory -= m_asyncInventorySender.HandleFetchInventory;
             client.OnUpdateInventoryItem -= UpdateInventoryItemAsset;
             client.OnCopyInventoryItem -= CopyInventoryItem;
             client.OnMoveInventoryItem -= MoveInventoryItem;
@@ -3389,7 +3393,6 @@ namespace OpenSim.Region.Framework.Scenes
                 }
             }
 
-
             // In all cases, add or update the circuit data with the new agent circuit data and teleport flags
             agent.teleportFlags = teleportFlags;
             m_authenticateHandler.AddNewCircuit(agent.circuitcode, agent);
diff --git a/OpenSim/Region/Framework/Scenes/SceneGraph.cs b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
index a078291..7ec7ea3 100644
--- a/OpenSim/Region/Framework/Scenes/SceneGraph.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
@@ -1401,21 +1401,26 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
         /// <summary>
-        ///
+        /// Update the flags on a scene object.  This covers properties such as phantom, physics and temporary.
         /// </summary>
+        /// <remarks>
+        /// This is currently handling the incoming call from the client stack (e.g. LLClientView).
+        /// </remarks>
         /// <param name="localID"></param>
-        /// <param name="packet"></param>
+        /// <param name="UsePhysics"></param>
+        /// <param name="SetTemporary"></param>
+        /// <param name="SetPhantom"></param>
         /// <param name="remoteClient"></param>
-        /// This routine seems to get called when a user changes object settings in the viewer.
-        /// If some one can confirm that, please change the comment according.
-        protected internal void UpdatePrimFlags(uint localID, bool UsePhysics, bool IsTemporary, bool IsPhantom, IClientAPI remoteClient)
+        protected internal void UpdatePrimFlags(
+            uint localID, bool UsePhysics, bool SetTemporary, bool SetPhantom, IClientAPI remoteClient)
         {
             SceneObjectGroup group = GetGroupByPrim(localID);
             if (group != null)
             {
                 if (m_parentScene.Permissions.CanEditObject(group.UUID, remoteClient.AgentId))
                 {
-                    group.UpdatePrimFlags(localID, UsePhysics, IsTemporary, IsPhantom, false); // VolumeDetect can't be set via UI and will always be off when a change is made there
+                    // VolumeDetect can't be set via UI and will always be off when a change is made there
+                    group.UpdatePrimFlags(localID, UsePhysics, SetTemporary, SetPhantom, false);
                 }
             }
         }
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 42ac9aa..fa23fcd 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -2513,14 +2513,15 @@ namespace OpenSim.Region.Framework.Scenes
         /// Update prim flags for this group.
         /// </summary>
         /// <param name="localID"></param>
-        /// <param name="type"></param>
-        /// <param name="inUse"></param>
-        /// <param name="data"></param>
-        public void UpdatePrimFlags(uint localID, bool UsePhysics, bool IsTemporary, bool IsPhantom, bool IsVolumeDetect)
+        /// <param name="UsePhysics"></param>
+        /// <param name="SetTemporary"></param>
+        /// <param name="SetPhantom"></param>
+        /// <param name="SetVolumeDetect"></param>
+        public void UpdatePrimFlags(uint localID, bool UsePhysics, bool SetTemporary, bool SetPhantom, bool SetVolumeDetect)
         {
             SceneObjectPart selectionPart = GetChildPart(localID);
 
-            if (IsTemporary)
+            if (SetTemporary)
             {
                 DetachFromBackup();
                 // Remove from database and parcel prim count
@@ -2545,7 +2546,7 @@ namespace OpenSim.Region.Framework.Scenes
                 }
 
                 for (int i = 0; i < parts.Length; i++)
-                    parts[i].UpdatePrimFlags(UsePhysics, IsTemporary, IsPhantom, IsVolumeDetect);
+                    parts[i].UpdatePrimFlags(UsePhysics, SetTemporary, SetPhantom, SetVolumeDetect);
             }
         }
 
@@ -3287,34 +3288,36 @@ namespace OpenSim.Region.Framework.Scenes
 
             return retmass;
         }
-        
+
+        /// <summary>
+        /// If the object is a sculpt/mesh, retrieve the mesh data for each part and reinsert it into each shape so that
+        /// the physics engine can use it.
+        /// </summary>
+        /// <remarks>
+        /// When the physics engine has finished with it, the sculpt data is discarded to save memory.
+        /// </remarks>
         public void CheckSculptAndLoad()
         {
             if (IsDeleted)
                 return;
+
             if ((RootPart.GetEffectiveObjectFlags() & (uint)PrimFlags.Phantom) != 0)
                 return;
 
+//            m_log.Debug("Processing CheckSculptAndLoad for {0} {1}", Name, LocalId);
+
             SceneObjectPart[] parts = m_parts.GetArray();
+
             for (int i = 0; i < parts.Length; i++)
-            {
-                SceneObjectPart part = parts[i];
-                if (part.Shape.SculptEntry && part.Shape.SculptTexture != UUID.Zero)
-                {
-                    // check if a previously decoded sculpt map has been cached
-                    if (File.Exists(System.IO.Path.Combine("j2kDecodeCache", "smap_" + part.Shape.SculptTexture.ToString())))
-                    {
-                        part.SculptTextureCallback(part.Shape.SculptTexture, null);
-                    }
-                    else
-                    {
-                        m_scene.AssetService.Get(
-                            part.Shape.SculptTexture.ToString(), part, AssetReceived);
-                    }
-                }
-            }
+                parts[i].CheckSculptAndLoad();
         }
 
+        /// <summary>
+        /// Handle an asset received asynchronously from the asset service.
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="sender"></param>
+        /// <param name="asset"></param>
         protected void AssetReceived(string id, Object sender, AssetBase asset)
         {
             SceneObjectPart sop = (SceneObjectPart)sender;
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index c6d8c73..2026c53 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -28,6 +28,7 @@
 using System;
 using System.Collections.Generic;
 using System.Drawing;
+using System.IO;
 using System.Reflection;
 using System.Runtime.Serialization;
 using System.Security.Permissions;
@@ -800,7 +801,8 @@ namespace OpenSim.Region.Framework.Scenes
                         actor.Orientation = GetWorldRotation();
 
                         // Tell the physics engines that this prim changed.
-                        m_parentGroup.Scene.PhysicsScene.AddPhysicsActorTaint(actor);
+                        if (m_parentGroup.Scene != null)
+                            m_parentGroup.Scene.PhysicsScene.AddPhysicsActorTaint(actor);
                     }
                 }
             }
@@ -1067,7 +1069,6 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        
         public bool CreateSelected
         {
             get { return m_createSelected; }
@@ -1085,11 +1086,13 @@ namespace OpenSim.Region.Framework.Scenes
 
         public Vector3 AbsolutePosition
         {
-            get {
+            get
+            {
                 if (IsAttachment)
                     return GroupPosition;
 
-                return m_offsetPosition + m_groupPosition; }
+                return m_offsetPosition + m_groupPosition;
+            }
         }
 
         public SceneObjectGroup ParentGroup
@@ -1238,7 +1241,9 @@ namespace OpenSim.Region.Framework.Scenes
         /// <summary>
         /// Property flags.  See OpenMetaverse.PrimFlags 
         /// </summary>
+        /// <remarks>
         /// Example properties are PrimFlags.Phantom and PrimFlags.DieAtEdge
+        /// </remarks>
         public PrimFlags Flags
         {
             get { return _flags; }
@@ -1561,6 +1566,8 @@ namespace OpenSim.Region.Framework.Scenes
         /// <param name="m_physicalPrim"></param>
         public void ApplyPhysics(uint rootObjectFlags, bool VolumeDetectActive, bool m_physicalPrim)
         {
+//            m_log.DebugFormat("[SCENE OBJECT PART]: Applying physics to {0} {1} {2}", Name, LocalId, UUID);
+
             bool isPhysical = (((rootObjectFlags & (uint) PrimFlags.Physics) != 0) && m_physicalPrim);
             bool isPhantom = ((rootObjectFlags & (uint) PrimFlags.Phantom) != 0);
 
@@ -1581,6 +1588,8 @@ namespace OpenSim.Region.Framework.Scenes
                 // or flexible
                 if (!isPhantom && !IsAttachment && !(Shape.PathCurve == (byte) Extrusion.Flexible))
                 {
+//                    m_log.DebugFormat("[SCENE OBJECT PART]: Creating PhysActor for {0} {1} {2}", Name, LocalId, UUID);
+
                     PhysActor = m_parentGroup.Scene.PhysicsScene.AddPrimShape(
                         LocalId,
                         string.Format("{0}/{1}", Name, UUID),
@@ -1802,7 +1811,6 @@ namespace OpenSim.Region.Framework.Scenes
                     {
                         ParentGroup.Scene.jointErrorMessage(joint, "warning: tracked body name not found! joint location will not be updated properly. joint: " + Name);
                     }
-
                 }
                 else
                 {
@@ -1864,7 +1872,6 @@ namespace OpenSim.Region.Framework.Scenes
 
                         PhysActor.IsPhysical = UsePhysics;
 
-
                         // If we're not what we're supposed to be in the physics scene, recreate ourselves.
                         //m_parentGroup.Scene.PhysicsScene.RemovePrim(PhysActor);
                         /// that's not wholesome.  Had to make Scene public
@@ -1888,6 +1895,7 @@ namespace OpenSim.Region.Framework.Scenes
                             }
                         }
                     }
+
                     m_parentGroup.Scene.PhysicsScene.AddPhysicsActorTaint(PhysActor);
                 }
             }
@@ -2823,6 +2831,12 @@ namespace OpenSim.Region.Framework.Scenes
             StoreUndoState();
             m_shape.Scale = scale;
 
+            // If we're a mesh/sculpt, then we need to tell the physics engine about our new size.  To do this, we
+            // need to reinsert the sculpt data into the shape, since the physics engine deletes it when done to
+            // save memory
+            if (PhysActor != null)
+                CheckSculptAndLoad();
+
             ParentGroup.HasGroupChanged = true;
             ScheduleFullUpdate();
         }
@@ -2951,7 +2965,6 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-
         public void SculptTextureCallback(UUID textureID, AssetBase texture)
         {
             if (m_shape.SculptEntry)
@@ -2960,14 +2973,17 @@ namespace OpenSim.Region.Framework.Scenes
                 //if (texture != null)
                 {
                     if (texture != null)
+                    {
+//                        m_log.DebugFormat(
+//                            "[SCENE OBJECT PART]: Setting sculpt data for {0} on SculptTextureCallback()", Name);
+
                         m_shape.SculptData = texture.Data;
+                    }
 
                     if (PhysActor != null)
                     {
-                        // Tricks physics engine into thinking we've changed the part shape.
-                        PrimitiveBaseShape m_newshape = m_shape.Copy();
-                        PhysActor.Shape = m_newshape;
-                        m_shape = m_newshape;
+                        // Update the physics actor with the new loaded sculpt data and set the taint signal.
+                        PhysActor.Shape = m_shape;
 
                         m_parentGroup.Scene.PhysicsScene.AddPhysicsActorTaint(PhysActor);
                     }
@@ -3263,11 +3279,14 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 m_parentGroup.SetAxisRotation(axis, rotate);
             }
+
             //Cannot use ScriptBaseClass constants as no referance to it currently.
             if (axis == 2)//STATUS_ROTATE_X
                 STATUS_ROTATE_X = rotate;
+
             if (axis == 4)//STATUS_ROTATE_Y
                 STATUS_ROTATE_Y = rotate;
+
             if (axis == 8)//STATUS_ROTATE_Z
                 STATUS_ROTATE_Z = rotate;
         }
@@ -4318,14 +4337,21 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        public void UpdatePrimFlags(bool UsePhysics, bool IsTemporary, bool IsPhantom, bool IsVD)
+        /// <summary>
+        /// Update the flags on this prim.  This covers properties such as phantom, physics and temporary.
+        /// </summary>
+        /// <param name="UsePhysics"></param>
+        /// <param name="SetTemporary"></param>
+        /// <param name="SetPhantom"></param>
+        /// <param name="SetVD"></param>
+        public void UpdatePrimFlags(bool UsePhysics, bool SetTemporary, bool SetPhantom, bool SetVD)
         {
             bool wasUsingPhysics = ((Flags & PrimFlags.Physics) != 0);
             bool wasTemporary = ((Flags & PrimFlags.TemporaryOnRez) != 0);
             bool wasPhantom = ((Flags & PrimFlags.Phantom) != 0);
             bool wasVD = VolumeDetectActive;
 
-            if ((UsePhysics == wasUsingPhysics) && (wasTemporary == IsTemporary) && (wasPhantom == IsPhantom) && (IsVD==wasVD))
+            if ((UsePhysics == wasUsingPhysics) && (wasTemporary == SetTemporary) && (wasPhantom == SetPhantom) && (SetVD == wasVD))
             {
                 return;
             }
@@ -4335,32 +4361,31 @@ namespace OpenSim.Region.Framework.Scenes
             // that...
             // ... if VD is changed, all others are not.
             // ... if one of the others is changed, VD is not.
-            if (IsVD) // VD is active, special logic applies
+            if (SetVD) // VD is active, special logic applies
             {
                 // State machine logic for VolumeDetect
                 // More logic below
-                bool phanReset = (IsPhantom != wasPhantom) && !IsPhantom;
+                bool phanReset = (SetPhantom != wasPhantom) && !SetPhantom;
 
                 if (phanReset) // Phantom changes from on to off switch VD off too
                 {
-                    IsVD = false;               // Switch it of for the course of this routine
+                    SetVD = false;               // Switch it of for the course of this routine
                     VolumeDetectActive = false; // and also permanently
                     if (PhysActor != null)
                         PhysActor.SetVolumeDetect(0);   // Let physics know about it too
                 }
                 else
                 {
-                    IsPhantom = false;
                     // If volumedetect is active we don't want phantom to be applied.
                     // If this is a new call to VD out of the state "phantom"
                     // this will also cause the prim to be visible to physics
+                    SetPhantom = false;
                 }
-
             }
 
             if (UsePhysics && IsJoint())
             {
-                IsPhantom = true;
+                SetPhantom = true;
             }
 
             if (UsePhysics)
@@ -4390,8 +4415,7 @@ namespace OpenSim.Region.Framework.Scenes
                 }
             }
 
-
-            if (IsPhantom || IsAttachment || (Shape.PathCurve == (byte)Extrusion.Flexible)) // note: this may have been changed above in the case of joints
+            if (SetPhantom || IsAttachment || (Shape.PathCurve == (byte)Extrusion.Flexible)) // note: this may have been changed above in the case of joints
             {
                 AddFlag(PrimFlags.Phantom);
                 if (PhysActor != null)
@@ -4406,6 +4430,7 @@ namespace OpenSim.Region.Framework.Scenes
                 RemFlag(PrimFlags.Phantom);
 
                 PhysicsActor pa = PhysActor;
+
                 if (pa == null)
                 {
                     // It's not phantom anymore. So make sure the physics engine get's knowledge of it
@@ -4422,6 +4447,7 @@ namespace OpenSim.Region.Framework.Scenes
                     if (pa != null)
                     {
                         DoPhysicsPropertyUpdate(UsePhysics, true);
+
                         if (m_parentGroup != null)
                         {
                             if (!m_parentGroup.IsDeleted)
@@ -4432,6 +4458,7 @@ namespace OpenSim.Region.Framework.Scenes
                                 }
                             }
                         }
+
                         if (
                             ((AggregateScriptEvents & scriptEvents.collision) != 0) ||
                             ((AggregateScriptEvents & scriptEvents.collision_end) != 0) ||
@@ -4442,8 +4469,8 @@ namespace OpenSim.Region.Framework.Scenes
                             (CollisionSound != UUID.Zero)
                             )
                         {
-                                PhysActor.OnCollisionUpdate += PhysicsCollision;
-                                PhysActor.SubscribeEvents(1000);
+                            PhysActor.OnCollisionUpdate += PhysicsCollision;
+                            PhysActor.SubscribeEvents(1000);
                         }
                     }
                 }
@@ -4465,7 +4492,7 @@ namespace OpenSim.Region.Framework.Scenes
                 }
             }
 
-            if (IsVD)
+            if (SetVD)
             {
                 // If the above logic worked (this is urgent candidate to unit tests!)
                 // we now have a physicsactor.
@@ -4480,18 +4507,19 @@ namespace OpenSim.Region.Framework.Scenes
                 }
             }
             else
-            {   // Remove VolumeDetect in any case. Note, it's safe to call SetVolumeDetect as often as you like
+            {
+                // Remove VolumeDetect in any case. Note, it's safe to call SetVolumeDetect as often as you like
                 // (mumbles, well, at least if you have infinte CPU powers :-))
                 PhysicsActor pa = this.PhysActor;
                 if (pa != null)
                 {
                     PhysActor.SetVolumeDetect(0);
                 }
+
                 this.VolumeDetectActive = false;
             }
 
-
-            if (IsTemporary)
+            if (SetTemporary)
             {
                 AddFlag(PrimFlags.TemporaryOnRez);
             }
@@ -4542,6 +4570,7 @@ namespace OpenSim.Region.Framework.Scenes
             m_shape.PathTaperY = shapeBlock.PathTaperY;
             m_shape.PathTwist = shapeBlock.PathTwist;
             m_shape.PathTwistBegin = shapeBlock.PathTwistBegin;
+
             if (PhysActor != null)
             {
                 PhysActor.Shape = m_shape;
@@ -4563,11 +4592,44 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
         /// <summary>
+        /// If the part is a sculpt/mesh, retrieve the mesh data and reinsert it into the shape so that the physics
+        /// engine can use it.
+        /// </summary>
+        /// <remarks>
+        /// When the physics engine has finished with it, the sculpt data is discarded to save memory.
+        /// </remarks>
+        public void CheckSculptAndLoad()
+        {
+//            m_log.Debug("Processing CheckSculptAndLoad for {0} {1}", Name, LocalId);
+
+            if (ParentGroup.IsDeleted)
+                return;
+
+            if ((ParentGroup.RootPart.GetEffectiveObjectFlags() & (uint)PrimFlags.Phantom) != 0)
+                return;
+
+            if (Shape.SculptEntry && Shape.SculptTexture != UUID.Zero)
+            {
+                // check if a previously decoded sculpt map has been cached
+                if (File.Exists(System.IO.Path.Combine("j2kDecodeCache", "smap_" + Shape.SculptTexture.ToString())))
+                {
+                    SculptTextureCallback(Shape.SculptTexture, null);
+                }
+                else
+                {
+                    ParentGroup.Scene.AssetService.Get(Shape.SculptTexture.ToString(), this, AssetReceived);
+                }
+            }
+        }
+
+        /// <summary>
         /// Update the textures on the part.
         /// </summary>
+        /// <remarks>
         /// Added to handle bug in libsecondlife's TextureEntry.ToBytes()
         /// not handling RGBA properly. Cycles through, and "fixes" the color
         /// info
+        /// </remarks>
         /// <param name="tex"></param>
         public void UpdateTexture(Primitive.TextureEntry tex)
         {
@@ -4798,6 +4860,7 @@ namespace OpenSim.Region.Framework.Scenes
 
             Inventory.ApplyNextOwnerPermissions();
         }
+
         public void UpdateLookAt()
         {
             try
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index 80aafd0..83b761c 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -1944,10 +1944,9 @@ namespace OpenSim.Region.Framework.Scenes
                 m_log.Warn("Sit requested on unknown object: " + targetID.ToString());
             }
 
-            
-
             SendSitResponse(remoteClient, targetID, offset, Quaternion.Identity);
         }
+
         /*
         public void SitRayCastAvatarPosition(SceneObjectPart part)
         {
@@ -2380,7 +2379,6 @@ namespace OpenSim.Region.Framework.Scenes
         /// <param name="remoteClient"></param>
         public void SendTerseUpdateToClient(IClientAPI remoteClient)
         {
-
             // If the client is inactive, it's getting its updates from another
             // server.
             if (remoteClient.IsActive)
@@ -2495,7 +2493,7 @@ namespace OpenSim.Region.Framework.Scenes
             }
             
             // If we aren't using a cached appearance, then clear out the baked textures
-            if (! cachedappearance) 
+            if (!cachedappearance)
             {
                 m_appearance.ResetAppearance();
                 if (m_scene.AvatarFactory != null)
diff --git a/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs b/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
index fcf7e0c..c18c93a 100644
--- a/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
+++ b/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
@@ -1001,6 +1001,8 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
 
         private static void ProcessShpSculptData(PrimitiveBaseShape shp, XmlTextReader reader)
         {
+//            m_log.DebugFormat("[SCENE OBJECT SERIALIZER]: Setting sculpt data length {0}", shp.SculptData.Length);
+
             shp.SculptData = Convert.FromBase64String(reader.ReadElementString("SculptData"));
         }
 
diff --git a/OpenSim/Region/Framework/Scenes/Tests/AttachmentTests.cs b/OpenSim/Region/Framework/Scenes/Tests/AttachmentTests.cs
index cff649b..5586c65 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/AttachmentTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/AttachmentTests.cs
@@ -83,7 +83,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             region1 = scene.RegionInfo.RegionHandle;
             region2 = scene2.RegionInfo.RegionHandle;
             
-            SceneSetupHelpers.AddRootAgent(scene, agent1);
+            SceneSetupHelpers.AddClient(scene, agent1);
         }     
         
         [Test]
diff --git a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectBasicTests.cs b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectBasicTests.cs
index 0a82c4f..260d1c0 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectBasicTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectBasicTests.cs
@@ -139,7 +139,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
 
             SceneObjectPart part = SceneSetupHelpers.AddSceneObject(scene);
 
-            IClientAPI client = SceneSetupHelpers.AddRootAgent(scene, agentId);
+            IClientAPI client = SceneSetupHelpers.AddClient(scene, agentId);
             scene.DeRezObjects(client, new System.Collections.Generic.List<uint>() { part.LocalId }, UUID.Zero, DeRezAction.Delete, UUID.Zero);
 
             SceneObjectPart retrievedPart = scene.GetSceneObjectPart(part.LocalId);
diff --git a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectDeRezTests.cs b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectDeRezTests.cs
index 5357a06..1b8c100 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectDeRezTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectDeRezTests.cs
@@ -66,7 +66,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             IConfig config = configSource.AddConfig("Startup");
             config.Set("serverside_object_permissions", true);
             SceneSetupHelpers.SetupSceneModules(scene, configSource, new object[] { new PermissionsModule() });
-            TestClient client = SceneSetupHelpers.AddRootAgent(scene, userId);
+            TestClient client = SceneSetupHelpers.AddClient(scene, userId);
             
             // Turn off the timer on the async sog deleter - we'll crank it by hand for this test.
             AsyncSceneObjectGroupDeleter sogd = scene.SceneObjectGroupDeleter;
@@ -105,7 +105,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             IConfig config = configSource.AddConfig("Startup");
             config.Set("serverside_object_permissions", true);
             SceneSetupHelpers.SetupSceneModules(scene, configSource, new object[] { new PermissionsModule() });            
-            TestClient client = SceneSetupHelpers.AddRootAgent(scene, userId);
+            TestClient client = SceneSetupHelpers.AddClient(scene, userId);
             
             // Turn off the timer on the async sog deleter - we'll crank it by hand for this test.
             AsyncSceneObjectGroupDeleter sogd = scene.SceneObjectGroupDeleter;
diff --git a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectUserGroupTests.cs b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectUserGroupTests.cs
index 77bd4c2..8425d37 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectUserGroupTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectUserGroupTests.cs
@@ -75,7 +75,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
                      new GroupsModule(), 
                      new MockGroupsServicesConnector() });
             
-            TestClient client = SceneSetupHelpers.AddRootAgent(scene, userId);            
+            TestClient client = SceneSetupHelpers.AddClient(scene, userId);            
             
             IGroupsModule groupsModule = scene.RequestModuleInterface<IGroupsModule>();     
             
diff --git a/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTests.cs b/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTests.cs
index 03ac252..a37b338 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/ScenePresenceTests.cs
@@ -212,7 +212,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             
             SceneSetupHelpers.SetupSceneModules(myScene1, configSource, etm);            
             
-            SceneSetupHelpers.AddRootAgent(myScene1, agent1Id);
+            SceneSetupHelpers.AddClient(myScene1, agent1Id);
             ScenePresence childPresence = myScene2.GetScenePresence(agent1);
             
             // TODO: Need to do a fair amount of work to allow synchronous establishment of child agents
diff --git a/OpenSim/Region/Framework/Scenes/Tests/StandaloneTeleportTests.cs b/OpenSim/Region/Framework/Scenes/Tests/StandaloneTeleportTests.cs
index 1b5a54e..4074f5d 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/StandaloneTeleportTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/StandaloneTeleportTests.cs
@@ -125,7 +125,7 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             sceneA.RegisterRegionWithGrid();
 
             UUID agentId = UUID.Parse("00000000-0000-0000-0000-000000000041");
-            TestClient client = SceneSetupHelpers.AddRootAgent(sceneA, agentId);
+            TestClient client = SceneSetupHelpers.AddClient(sceneA, agentId);
 
             ICapabilitiesModule sceneACapsModule = sceneA.RequestModuleInterface<ICapabilitiesModule>();