1 files changed, 526 insertions, 63 deletions

diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 5b838f8..683aafc 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -24,11 +24,12 @@
  * (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.Drawing;
 using System.IO;
+using System.Diagnostics;
 using System.Linq;
 using System.Threading;
 using System.Xml;
@@ -105,8 +106,29 @@ namespace OpenSim.Region.Framework.Scenes
         /// since the group's last persistent backup
         /// </summary>
         private bool m_hasGroupChanged = false;
-        private long timeFirstChanged;
-        private long timeLastChanged;
+        private long timeFirstChanged = 0;
+        private long timeLastChanged = 0;
+        private long m_maxPersistTime = 0;
+        private long m_minPersistTime = 0;
+        private Random m_rand;
+        private bool m_suspendUpdates;
+        private List<ScenePresence> m_linkedAvatars = new List<ScenePresence>();
+
+        public bool areUpdatesSuspended
+        {
+            get
+            {
+                return m_suspendUpdates;
+            }
+            set 
+            {
+                m_suspendUpdates = value;   
+                if (!value)
+                {
+                    QueueForUpdateCheck();
+                }               
+            }
+        }
 
         public bool HasGroupChanged
         {
@@ -114,9 +136,39 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 if (value)
                 {
+                    if (m_isBackedUp)
+                    {
+                        m_scene.SceneGraph.FireChangeBackup(this);
+                    }
                     timeLastChanged = DateTime.Now.Ticks;
                     if (!m_hasGroupChanged)
                         timeFirstChanged = DateTime.Now.Ticks;
+                    if (m_rootPart != null && m_rootPart.UUID != null && m_scene != null)
+                    {
+                        if (m_rand == null)
+                        {
+                            byte[] val = new byte[16];
+                            m_rootPart.UUID.ToBytes(val, 0);
+                            m_rand = new Random(BitConverter.ToInt32(val, 0));
+                        }
+                       
+                        if (m_scene.GetRootAgentCount() == 0)
+                        {
+                            //If the region is empty, this change has been made by an automated process
+                            //and thus we delay the persist time by a random amount between 1.5 and 2.5.
+
+                            float factor = 1.5f + (float)(m_rand.NextDouble());
+                            m_maxPersistTime = (long)((float)m_scene.m_persistAfter * factor);
+                            m_minPersistTime = (long)((float)m_scene.m_dontPersistBefore * factor);
+                        }
+                        else
+                        {
+                            //If the region is not empty, we want to obey the minimum and maximum persist times
+                            //but add a random factor so we stagger the object persistance a little
+                            m_maxPersistTime = (long)((float)m_scene.m_persistAfter * (1.0d - (m_rand.NextDouble() / 5.0d))); //Multiply by 1.0-1.5
+                            m_minPersistTime = (long)((float)m_scene.m_dontPersistBefore * (1.0d + (m_rand.NextDouble() / 2.0d))); //Multiply by 0.8-1.0
+                        }
+                    }
                 }
                 m_hasGroupChanged = value;
                 
@@ -131,7 +183,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// Has the group changed due to an unlink operation?  We record this in order to optimize deletion, since
         /// an unlinked group currently has to be persisted to the database before we can perform an unlink operation.
         /// </summary>
-        public bool HasGroupChangedDueToDelink { get; private set; }
+        public bool HasGroupChangedDueToDelink { get; set; }
 
         private bool isTimeToPersist()
         {
@@ -141,8 +193,19 @@ namespace OpenSim.Region.Framework.Scenes
                 return false;
             if (m_scene.ShuttingDown)
                 return true;
+
+            if (m_minPersistTime == 0 || m_maxPersistTime == 0)
+            {
+                m_maxPersistTime = m_scene.m_persistAfter;
+                m_minPersistTime = m_scene.m_dontPersistBefore;
+            }
+                
             long currentTime = DateTime.Now.Ticks;
-            if (currentTime - timeLastChanged > m_scene.m_dontPersistBefore || currentTime - timeFirstChanged > m_scene.m_persistAfter)
+
+            if (timeLastChanged == 0) timeLastChanged = currentTime;
+            if (timeFirstChanged == 0) timeFirstChanged = currentTime;
+
+            if (currentTime - timeLastChanged > m_minPersistTime || currentTime - timeFirstChanged > m_maxPersistTime)
                 return true;
             return false;
         }
@@ -247,10 +310,10 @@ namespace OpenSim.Region.Framework.Scenes
 
         private bool m_scriptListens_atTarget;
         private bool m_scriptListens_notAtTarget;
-
         private bool m_scriptListens_atRotTarget;
         private bool m_scriptListens_notAtRotTarget;
 
+        public bool m_dupeInProgress = false;
         internal Dictionary<UUID, string> m_savedScriptState;
 
         #region Properties
@@ -287,6 +350,16 @@ namespace OpenSim.Region.Framework.Scenes
             get { return m_parts.Count; }
         }
 
+//        protected Quaternion m_rotation = Quaternion.Identity;
+//
+//        public virtual Quaternion Rotation
+//        {
+//            get { return m_rotation; }
+//            set {
+//                m_rotation = value; 
+//            }
+//        }
+
         public Quaternion GroupRotation
         {
             get { return m_rootPart.RotationOffset; }
@@ -395,7 +468,11 @@ namespace OpenSim.Region.Framework.Scenes
                         m_scene.CrossPrimGroupIntoNewRegion(val, this, true);
                     }
                 }
-                
+
+                foreach (SceneObjectPart part in m_parts.GetArray())
+                {
+                    part.IgnoreUndoUpdate = true;
+                }
                 if (RootPart.GetStatusSandbox())
                 {
                     if (Util.GetDistanceTo(RootPart.StatusSandboxPos, value) > 10)
@@ -409,10 +486,30 @@ namespace OpenSim.Region.Framework.Scenes
                         return;
                     }
                 }
-
                 SceneObjectPart[] parts = m_parts.GetArray();
-                for (int i = 0; i < parts.Length; i++)
-                    parts[i].GroupPosition = val;
+                bool triggerScriptEvent = m_rootPart.GroupPosition != val;
+                if (m_dupeInProgress)
+                    triggerScriptEvent = false;
+                foreach (SceneObjectPart part in parts)
+                {
+                    part.GroupPosition = val;
+                    if (triggerScriptEvent)
+                        part.TriggerScriptChangedEvent(Changed.POSITION);
+                }
+                if (!m_dupeInProgress)
+                {
+                    foreach (ScenePresence av in m_linkedAvatars)
+                    {
+                        SceneObjectPart p = m_scene.GetSceneObjectPart(av.ParentID);
+                        if (m_parts.TryGetValue(p.UUID, out p))
+                        {
+                            Vector3 offset = p.GetWorldPosition() - av.ParentPosition;
+                            av.AbsolutePosition += offset;
+                            av.ParentPosition = p.GetWorldPosition(); //ParentPosition gets cleared by AbsolutePosition
+                            av.SendAvatarDataToAllAgents();
+                        }
+                    }
+                }
 
                 //if (m_rootPart.PhysActor != null)
                 //{
@@ -578,6 +675,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// </summary>
         public SceneObjectGroup()
         {
+            
         }
 
         /// <summary>
@@ -594,7 +692,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// Constructor.  This object is added to the scene later via AttachToScene()
         /// </summary>
         public SceneObjectGroup(UUID ownerID, Vector3 pos, Quaternion rot, PrimitiveBaseShape shape)
-        { 
+        {
             SetRootPart(new SceneObjectPart(ownerID, shape, pos, rot, Vector3.Zero));
         }
 
@@ -642,6 +740,9 @@ namespace OpenSim.Region.Framework.Scenes
         /// </summary>
         public virtual void AttachToBackup()
         {
+            if (IsAttachment) return;
+            m_scene.SceneGraph.FireAttachToBackup(this);
+
             if (InSceneBackup)
             {
                 //m_log.DebugFormat(
@@ -684,6 +785,9 @@ namespace OpenSim.Region.Framework.Scenes
 
             ApplyPhysics();
 
+            if (RootPart.PhysActor != null)
+                RootPart.Buoyancy = RootPart.Buoyancy;
+
             // Don't trigger the update here - otherwise some client issues occur when multiple updates are scheduled
             // for the same object with very different properties.  The caller must schedule the update.
             //ScheduleGroupForFullUpdate();
@@ -699,6 +803,10 @@ namespace OpenSim.Region.Framework.Scenes
             EntityIntersection result = new EntityIntersection();
 
             SceneObjectPart[] parts = m_parts.GetArray();
+
+            // Find closest hit here
+            float idist = float.MaxValue;
+
             for (int i = 0; i < parts.Length; i++)
             {
                 SceneObjectPart part = parts[i];
@@ -713,11 +821,6 @@ namespace OpenSim.Region.Framework.Scenes
 
                 EntityIntersection inter = part.TestIntersectionOBB(hRay, parentrotation, frontFacesOnly, faceCenters);
 
-                // This may need to be updated to the maximum draw distance possible..
-                // We might (and probably will) be checking for prim creation from other sims
-                // when the camera crosses the border.
-                float idist = Constants.RegionSize;
-
                 if (inter.HitTF)
                 {
                     // We need to find the closest prim to return to the testcaller along the ray
@@ -728,10 +831,11 @@ namespace OpenSim.Region.Framework.Scenes
                         result.obj = part;
                         result.normal = inter.normal;
                         result.distance = inter.distance;
+
+                        idist = inter.distance;
                     }
                 }
             }
-
             return result;
         }
 
@@ -751,17 +855,19 @@ namespace OpenSim.Region.Framework.Scenes
             minZ = 8192f;
 
             SceneObjectPart[] parts = m_parts.GetArray();
-            for (int i = 0; i < parts.Length; i++)
+            foreach (SceneObjectPart part in parts)
             {
-                SceneObjectPart part = parts[i];
-
                 Vector3 worldPos = part.GetWorldPosition();
                 Vector3 offset = worldPos - AbsolutePosition;
                 Quaternion worldRot;
                 if (part.ParentID == 0)
+                {
                     worldRot = part.RotationOffset;
+                }
                 else
+                {
                     worldRot = part.GetWorldRotation();
+                }
 
                 Vector3 frontTopLeft;
                 Vector3 frontTopRight;
@@ -773,6 +879,8 @@ namespace OpenSim.Region.Framework.Scenes
                 Vector3 backBottomLeft;
                 Vector3 backBottomRight;
 
+               // Vector3[] corners = new Vector3[8];
+
                 Vector3 orig = Vector3.Zero;
 
                 frontTopLeft.X = orig.X - (part.Scale.X / 2);
@@ -807,6 +915,38 @@ namespace OpenSim.Region.Framework.Scenes
                 backBottomRight.Y = orig.Y + (part.Scale.Y / 2);
                 backBottomRight.Z = orig.Z - (part.Scale.Z / 2);
 
+                
+
+                //m_log.InfoFormat("pre corner 1 is {0} {1} {2}", frontTopLeft.X, frontTopLeft.Y, frontTopLeft.Z);
+                //m_log.InfoFormat("pre corner 2 is {0} {1} {2}", frontTopRight.X, frontTopRight.Y, frontTopRight.Z);
+                //m_log.InfoFormat("pre corner 3 is {0} {1} {2}", frontBottomRight.X, frontBottomRight.Y, frontBottomRight.Z);
+                //m_log.InfoFormat("pre corner 4 is {0} {1} {2}", frontBottomLeft.X, frontBottomLeft.Y, frontBottomLeft.Z);
+                //m_log.InfoFormat("pre corner 5 is {0} {1} {2}", backTopLeft.X, backTopLeft.Y, backTopLeft.Z);
+                //m_log.InfoFormat("pre corner 6 is {0} {1} {2}", backTopRight.X, backTopRight.Y, backTopRight.Z);
+                //m_log.InfoFormat("pre corner 7 is {0} {1} {2}", backBottomRight.X, backBottomRight.Y, backBottomRight.Z);
+                //m_log.InfoFormat("pre corner 8 is {0} {1} {2}", backBottomLeft.X, backBottomLeft.Y, backBottomLeft.Z);
+
+                //for (int i = 0; i < 8; i++)
+                //{
+                //    corners[i] = corners[i] * worldRot;
+                //    corners[i] += offset;
+
+                //    if (corners[i].X > maxX)
+                //        maxX = corners[i].X;
+                //    if (corners[i].X < minX)
+                //        minX = corners[i].X;
+
+                //    if (corners[i].Y > maxY)
+                //        maxY = corners[i].Y;
+                //    if (corners[i].Y < minY)
+                //        minY = corners[i].Y;
+
+                //    if (corners[i].Z > maxZ)
+                //        maxZ = corners[i].Y;
+                //    if (corners[i].Z < minZ)
+                //        minZ = corners[i].Z;
+                //}
+
                 frontTopLeft = frontTopLeft * worldRot;
                 frontTopRight = frontTopRight * worldRot;
                 frontBottomLeft = frontBottomLeft * worldRot;
@@ -828,6 +968,15 @@ namespace OpenSim.Region.Framework.Scenes
                 backTopLeft += offset;
                 backTopRight += offset;
 
+                //m_log.InfoFormat("corner 1 is {0} {1} {2}", frontTopLeft.X, frontTopLeft.Y, frontTopLeft.Z);
+                //m_log.InfoFormat("corner 2 is {0} {1} {2}", frontTopRight.X, frontTopRight.Y, frontTopRight.Z);
+                //m_log.InfoFormat("corner 3 is {0} {1} {2}", frontBottomRight.X, frontBottomRight.Y, frontBottomRight.Z);
+                //m_log.InfoFormat("corner 4 is {0} {1} {2}", frontBottomLeft.X, frontBottomLeft.Y, frontBottomLeft.Z);
+                //m_log.InfoFormat("corner 5 is {0} {1} {2}", backTopLeft.X, backTopLeft.Y, backTopLeft.Z);
+                //m_log.InfoFormat("corner 6 is {0} {1} {2}", backTopRight.X, backTopRight.Y, backTopRight.Z);
+                //m_log.InfoFormat("corner 7 is {0} {1} {2}", backBottomRight.X, backBottomRight.Y, backBottomRight.Z);
+                //m_log.InfoFormat("corner 8 is {0} {1} {2}", backBottomLeft.X, backBottomLeft.Y, backBottomLeft.Z);
+
                 if (frontTopRight.X > maxX)
                     maxX = frontTopRight.X;
                 if (frontTopLeft.X > maxX)
@@ -973,15 +1122,20 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void SaveScriptedState(XmlTextWriter writer)
         {
+            SaveScriptedState(writer, false);
+        }
+
+        public void SaveScriptedState(XmlTextWriter writer, bool oldIDs)
+        {
             XmlDocument doc = new XmlDocument();
             Dictionary<UUID,string> states = new Dictionary<UUID,string>();
 
             SceneObjectPart[] parts = m_parts.GetArray();
             for (int i = 0; i < parts.Length; i++)
             {
-                Dictionary<UUID, string> pstates = parts[i].Inventory.GetScriptStates();
+                Dictionary<UUID, string> pstates = parts[i].Inventory.GetScriptStates(oldIDs);
                 foreach (KeyValuePair<UUID, string> kvp in pstates)
-                    states.Add(kvp.Key, kvp.Value);
+                    states[kvp.Key] = kvp.Value;
             }
 
             if (states.Count > 0)
@@ -1001,6 +1155,168 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
         /// <summary>
+        /// Add the avatar to this linkset (avatar is sat).
+        /// </summary>
+        /// <param name="agentID"></param>
+        public void AddAvatar(UUID agentID)
+        {
+            ScenePresence presence;
+            if (m_scene.TryGetScenePresence(agentID, out presence))
+            {
+                if (!m_linkedAvatars.Contains(presence))
+                {
+                    m_linkedAvatars.Add(presence);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Delete the avatar from this linkset (avatar is unsat).
+        /// </summary>
+        /// <param name="agentID"></param>
+        public void DeleteAvatar(UUID agentID)
+        {
+            ScenePresence presence;
+            if (m_scene.TryGetScenePresence(agentID, out presence))
+            {
+                if (m_linkedAvatars.Contains(presence))
+                {
+                    m_linkedAvatars.Remove(presence);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Returns the list of linked presences (avatars sat on this group)
+        /// </summary>
+        /// <param name="agentID"></param>
+        public List<ScenePresence> GetLinkedAvatars()
+        {
+            return m_linkedAvatars;
+        }
+
+        /// <summary>
+        /// Attach this scene object to the given avatar.
+        /// </summary>
+        /// <param name="agentID"></param>
+        /// <param name="attachmentpoint"></param>
+        /// <param name="AttachOffset"></param>
+        private void AttachToAgent(
+            ScenePresence avatar, SceneObjectGroup so, uint attachmentpoint, Vector3 attachOffset, bool silent)
+        {
+            if (avatar != null)
+            {
+                // don't attach attachments to child agents
+                if (avatar.IsChildAgent) return;
+
+                // Remove from database and parcel prim count
+                m_scene.DeleteFromStorage(so.UUID);
+                m_scene.EventManager.TriggerParcelPrimCountTainted();
+
+                so.AttachedAvatar = avatar.UUID;
+
+                if (so.RootPart.PhysActor != null)
+                {
+                    m_scene.PhysicsScene.RemovePrim(so.RootPart.PhysActor);
+                    so.RootPart.PhysActor = null;
+                }
+
+                so.AbsolutePosition = attachOffset;
+                so.RootPart.AttachedPos = attachOffset;
+                so.IsAttachment = true;
+                so.RootPart.SetParentLocalId(avatar.LocalId);
+                so.AttachmentPoint = attachmentpoint;
+
+                avatar.AddAttachment(this);
+
+                if (!silent)
+                {
+                    // Killing it here will cause the client to deselect it
+                    // It then reappears on the avatar, deselected
+                    // through the full update below
+                    //
+                    if (IsSelected)
+                    {
+                        m_scene.SendKillObject(new List<uint> { m_rootPart.LocalId });
+                    }
+
+                    IsSelected = false; // fudge....
+                    ScheduleGroupForFullUpdate();
+                }
+            }
+            else
+            {
+                m_log.WarnFormat(
+                    "[SOG]: Tried to add attachment {0} to avatar with UUID {1} in region {2} but the avatar is not present", 
+                    UUID, avatar.ControllingClient.AgentId, Scene.RegionInfo.RegionName);
+            }
+        }
+
+        public byte GetAttachmentPoint()
+        {
+            return m_rootPart.Shape.State;
+        }
+
+        public void DetachToGround()
+        {
+            ScenePresence avatar = m_scene.GetScenePresence(AttachedAvatar);
+            if (avatar == null)
+                return;
+
+            avatar.RemoveAttachment(this);
+
+            Vector3 detachedpos = new Vector3(127f,127f,127f);
+            if (avatar == null)
+                return;
+
+            detachedpos = avatar.AbsolutePosition;
+            RootPart.FromItemID = UUID.Zero;
+
+            AbsolutePosition = detachedpos;
+            AttachedAvatar = UUID.Zero;
+
+            //SceneObjectPart[] parts = m_parts.GetArray();
+            //for (int i = 0; i < parts.Length; i++)
+            //    parts[i].AttachedAvatar = UUID.Zero;
+
+            m_rootPart.SetParentLocalId(0);
+            AttachmentPoint = (byte)0;
+            m_rootPart.ApplyPhysics(m_rootPart.GetEffectiveObjectFlags(), m_rootPart.VolumeDetectActive);
+            HasGroupChanged = true;
+            RootPart.Rezzed = DateTime.Now;
+            RootPart.RemFlag(PrimFlags.TemporaryOnRez);
+            AttachToBackup();
+            m_scene.EventManager.TriggerParcelPrimCountTainted();
+            m_rootPart.ScheduleFullUpdate();
+            m_rootPart.ClearUndoState();
+        }
+
+        public void DetachToInventoryPrep()
+        {
+            ScenePresence avatar = m_scene.GetScenePresence(AttachedAvatar);
+            //Vector3 detachedpos = new Vector3(127f, 127f, 127f);
+            if (avatar != null)
+            {
+                //detachedpos = avatar.AbsolutePosition;
+                avatar.RemoveAttachment(this);
+            }
+
+            AttachedAvatar = UUID.Zero;
+
+            /*SceneObjectPart[] parts = m_parts.GetArray();
+            for (int i = 0; i < parts.Length; i++)
+                parts[i].AttachedAvatar = UUID.Zero;*/
+
+            m_rootPart.SetParentLocalId(0);
+            //m_rootPart.SetAttachmentPoint((byte)0);
+            IsAttachment = false;
+            AbsolutePosition = m_rootPart.AttachedPos;
+            //m_rootPart.ApplyPhysics(m_rootPart.GetEffectiveObjectFlags(), m_scene.m_physicalPrim);
+            //AttachToBackup();
+            //m_rootPart.ScheduleFullUpdate();
+        }
+
+        /// <summary>
         ///
         /// </summary>
         /// <param name="part"></param>
@@ -1050,7 +1366,10 @@ namespace OpenSim.Region.Framework.Scenes
         public void AddPart(SceneObjectPart part)
         {
             part.SetParent(this);
-            part.LinkNum = m_parts.Add(part.UUID, part);
+            m_parts.Add(part.UUID, part);
+
+            part.LinkNum = m_parts.Count;
+
             if (part.LinkNum == 2)
                 RootPart.LinkNum = 1;
         }
@@ -1158,6 +1477,11 @@ namespace OpenSim.Region.Framework.Scenes
         /// <param name="silent">If true then deletion is not broadcast to clients</param>
         public void DeleteGroupFromScene(bool silent)
         {
+            // We need to keep track of this state in case this group is still queued for backup.
+            IsDeleted = true;
+
+            DetachFromBackup();
+
             SceneObjectPart[] parts = m_parts.GetArray();
             for (int i = 0; i < parts.Length; i++)
             {
@@ -1180,6 +1504,8 @@ namespace OpenSim.Region.Framework.Scenes
                     }
                 });
             }
+            
+          
         }
 
         public void AddScriptLPS(int count)
@@ -1275,7 +1601,12 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void SetOwnerId(UUID userId)
         {
-            ForEachPart(delegate(SceneObjectPart part) { part.OwnerID = userId; });
+                ForEachPart(delegate(SceneObjectPart part) 
+                {
+                    
+                    part.OwnerID = userId;
+                    
+                });
         }
 
         public void ForEachPart(Action<SceneObjectPart> whatToDo)
@@ -1307,11 +1638,17 @@ namespace OpenSim.Region.Framework.Scenes
                 return;
             }
 
+            if ((RootPart.Flags & PrimFlags.TemporaryOnRez) != 0)
+                return;
+
             // Since this is the top of the section of call stack for backing up a particular scene object, don't let
             // any exception propogate upwards.
             try
             {
-                if (!m_scene.ShuttingDown) // if shutting down then there will be nothing to handle the return so leave till next restart
+                if (!m_scene.ShuttingDown || // if shutting down then there will be nothing to handle the return so leave till next restart
+                        m_scene.LoginsDisabled || // We're starting up or doing maintenance, don't mess with things
+                        m_scene.LoadingPrims) // Land may not be valid yet
+                
                 {
                     ILandObject parcel = m_scene.LandChannel.GetLandObject(
                             m_rootPart.GroupPosition.X, m_rootPart.GroupPosition.Y);
@@ -1338,6 +1675,7 @@ namespace OpenSim.Region.Framework.Scenes
                             }
                         }
                     }
+
                 }
 
                 if (m_scene.UseBackup && HasGroupChanged)
@@ -1345,6 +1683,20 @@ namespace OpenSim.Region.Framework.Scenes
                     // don't backup while it's selected or you're asking for changes mid stream.
                     if (isTimeToPersist() || forcedBackup)
                     {
+                        if (m_rootPart.PhysActor != null &&
+                            (!m_rootPart.PhysActor.IsPhysical))
+                        {
+                            // Possible ghost prim
+                            if (m_rootPart.PhysActor.Position != m_rootPart.GroupPosition)
+                            {
+                                foreach (SceneObjectPart part in m_parts.GetArray())
+                                {
+                                    // Re-set physics actor positions and
+                                    // orientations
+                                    part.GroupPosition = m_rootPart.GroupPosition;
+                                }
+                            }
+                        }
 //                        m_log.DebugFormat(
 //                            "[SCENE]: Storing {0}, {1} in {2}",
 //                            Name, UUID, m_scene.RegionInfo.RegionName);
@@ -1428,7 +1780,7 @@ namespace OpenSim.Region.Framework.Scenes
             // This is only necessary when userExposed is false!
 
             bool previousAttachmentStatus = dupe.IsAttachment;
-            
+
             if (!userExposed)
                 dupe.IsAttachment = true;
 
@@ -1446,11 +1798,11 @@ namespace OpenSim.Region.Framework.Scenes
                 dupe.m_rootPart.TrimPermissions();
 
             List<SceneObjectPart> partList = new List<SceneObjectPart>(m_parts.GetArray());
-            
+
             partList.Sort(delegate(SceneObjectPart p1, SceneObjectPart p2)
-                {
-                    return p1.LinkNum.CompareTo(p2.LinkNum);
-                }
+            {
+                return p1.LinkNum.CompareTo(p2.LinkNum);
+            }
             );
 
             foreach (SceneObjectPart part in partList)
@@ -1470,7 +1822,7 @@ namespace OpenSim.Region.Framework.Scenes
                 if (part.PhysActor != null && userExposed)
                 {
                     PrimitiveBaseShape pbs = newPart.Shape;
-    
+
                     newPart.PhysActor
                         = m_scene.PhysicsScene.AddPrimShape(
                             string.Format("{0}/{1}", newPart.Name, newPart.UUID),
@@ -1480,11 +1832,11 @@ namespace OpenSim.Region.Framework.Scenes
                             newPart.RotationOffset,
                             part.PhysActor.IsPhysical,
                             newPart.LocalId);
-    
+
                     newPart.DoPhysicsPropertyUpdate(part.PhysActor.IsPhysical, true);
                 }
             }
-            
+
             if (userExposed)
             {
                 dupe.UpdateParentIDs();
@@ -1599,6 +1951,7 @@ namespace OpenSim.Region.Framework.Scenes
             return Vector3.Zero;
         }
 
+         // This is used by both Double-Click Auto-Pilot and llMoveToTarget() in an attached object
         public void moveToTarget(Vector3 target, float tau)
         {
             if (IsAttachment)
@@ -1626,6 +1979,46 @@ namespace OpenSim.Region.Framework.Scenes
                 RootPart.PhysActor.PIDActive = false;
         }
         
+        public void rotLookAt(Quaternion target, float strength, float damping)
+        {
+            SceneObjectPart rootpart = m_rootPart;
+            if (rootpart != null)
+            {
+                if (IsAttachment)
+                {
+                /*
+                    ScenePresence avatar = m_scene.GetScenePresence(rootpart.AttachedAvatar);
+                    if (avatar != null)
+                    {
+                    Rotate the Av?
+                    } */
+                }
+                else
+                {
+                    if (rootpart.PhysActor != null)
+                    {                                                                   // APID must be implemented in your physics system for this to function.
+                        rootpart.PhysActor.APIDTarget = new Quaternion(target.X, target.Y, target.Z, target.W);
+                        rootpart.PhysActor.APIDStrength = strength;
+                        rootpart.PhysActor.APIDDamping = damping;
+                        rootpart.PhysActor.APIDActive = true;
+                    }
+                }
+            }
+        }
+
+        public void stopLookAt()
+        {
+            SceneObjectPart rootpart = m_rootPart;
+            if (rootpart != null)
+            {
+                if (rootpart.PhysActor != null)
+                {                                                       // APID must be implemented in your physics system for this to function.
+                    rootpart.PhysActor.APIDActive = false;
+                }
+            }
+        
+        }
+
         /// <summary>
         /// Uses a PID to attempt to clamp the object on the Z axis at the given height over tau seconds.
         /// </summary>
@@ -1681,6 +2074,8 @@ namespace OpenSim.Region.Framework.Scenes
         public SceneObjectPart CopyPart(SceneObjectPart part, UUID cAgentID, UUID cGroupID, bool userExposed)
         {
             SceneObjectPart newPart = part.Copy(m_scene.AllocateLocalId(), OwnerID, GroupID, m_parts.Count, userExposed);
+            newPart.SetParent(this);
+
             AddPart(newPart);
 
             SetPartAsNonRoot(newPart);
@@ -1809,11 +2204,11 @@ namespace OpenSim.Region.Framework.Scenes
         /// Immediately send a full update for this scene object.
         /// </summary>
         public void SendGroupFullUpdate()
-        {
+        {                       
             if (IsDeleted)
                 return;
 
-//            m_log.DebugFormat("[SOG]: Sending immediate full group update for {0} {1}", Name, UUID);
+//            m_log.DebugFormat("[SOG]: Sending immediate full group update for {0} {1}", Name, UUID);            
             
             RootPart.SendFullUpdateToAllClients();
 
@@ -1957,6 +2352,11 @@ namespace OpenSim.Region.Framework.Scenes
         /// <param name="objectGroup">The group of prims which should be linked to this group</param>
         public void LinkToGroup(SceneObjectGroup objectGroup)
         {
+            LinkToGroup(objectGroup, false);
+        }
+
+        public void LinkToGroup(SceneObjectGroup objectGroup, bool insert)
+        {
 //            m_log.DebugFormat(
 //                "[SCENE OBJECT GROUP]: Linking group with root part {0}, {1} to group with root part {2}, {3}",
 //                objectGroup.RootPart.Name, objectGroup.RootPart.UUID, RootPart.Name, RootPart.UUID);
@@ -1990,7 +2390,20 @@ namespace OpenSim.Region.Framework.Scenes
 
             lock (m_parts.SyncRoot)
             {
-                int linkNum = PrimCount + 1;
+                int linkNum;
+                if (insert)
+                {
+                    linkNum = 2;
+                    foreach (SceneObjectPart part in Parts)
+                    {
+                        if (part.LinkNum > 1)
+                            part.LinkNum++;
+                    }
+                }
+                else
+                {
+                    linkNum = PrimCount + 1;
+                }
 
                 m_parts.Add(linkPart.UUID, linkPart);
 
@@ -2018,7 +2431,7 @@ namespace OpenSim.Region.Framework.Scenes
             objectGroup.IsDeleted = true;
 
             objectGroup.m_parts.Clear();
-
+            
             // Can't do this yet since backup still makes use of the root part without any synchronization
 //            objectGroup.m_rootPart = null;
 
@@ -2152,6 +2565,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// <param name="objectGroup"></param>
         public virtual void DetachFromBackup()
         {
+            m_scene.SceneGraph.FireDetachFromBackup(this);
             if (m_isBackedUp && Scene != null)
                 m_scene.EventManager.OnBackup -= ProcessBackup;
             
@@ -2170,7 +2584,8 @@ namespace OpenSim.Region.Framework.Scenes
 
             axPos *= parentRot;
             part.OffsetPosition = axPos;
-            part.GroupPosition = oldGroupPosition + part.OffsetPosition;
+            Vector3 newPos = oldGroupPosition + part.OffsetPosition;
+            part.GroupPosition = newPos;
             part.OffsetPosition = Vector3.Zero;
             part.RotationOffset = worldRot;
 
@@ -2181,7 +2596,7 @@ namespace OpenSim.Region.Framework.Scenes
 
             part.LinkNum = linkNum;
 
-            part.OffsetPosition = part.GroupPosition - AbsolutePosition;
+            part.OffsetPosition = newPos - AbsolutePosition;
 
             Quaternion rootRotation = m_rootPart.RotationOffset;
 
@@ -2191,7 +2606,7 @@ namespace OpenSim.Region.Framework.Scenes
 
             parentRot = m_rootPart.RotationOffset;
             oldRot = part.RotationOffset;
-            Quaternion newRot = Quaternion.Inverse(parentRot) * oldRot;
+            Quaternion newRot = Quaternion.Inverse(parentRot) * worldRot;
             part.RotationOffset = newRot;
         }
 
@@ -2438,8 +2853,12 @@ namespace OpenSim.Region.Framework.Scenes
                     }
                 }
 
+                RootPart.UpdatePrimFlags(UsePhysics, SetTemporary, SetPhantom, SetVolumeDetect);
                 for (int i = 0; i < parts.Length; i++)
-                    parts[i].UpdatePrimFlags(UsePhysics, SetTemporary, SetPhantom, SetVolumeDetect);
+                {
+                    if (parts[i] != RootPart)
+                        parts[i].UpdatePrimFlags(UsePhysics, SetTemporary, SetPhantom, SetVolumeDetect);
+                }
             }
         }
 
@@ -2452,6 +2871,17 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
+
+
+        /// <summary>
+        /// Gets the number of parts
+        /// </summary>
+        /// <returns></returns>
+        public int GetPartCount()
+        {
+            return Parts.Count();
+        }
+
         /// <summary>
         /// Update the texture entry for this part
         /// </summary>
@@ -2513,7 +2943,6 @@ namespace OpenSim.Region.Framework.Scenes
         {
 //            m_log.DebugFormat(
 //                "[SCENE OBJECT GROUP]: Group resizing {0} {1} from {2} to {3}", Name, LocalId, RootPart.Scale, scale);
-
             RootPart.StoreUndoState(true);
 
             scale.X = Math.Min(scale.X, Scene.m_maxNonphys);
@@ -2614,7 +3043,6 @@ namespace OpenSim.Region.Framework.Scenes
             prevScale.X *= x;
             prevScale.Y *= y;
             prevScale.Z *= z;
-
 //            RootPart.IgnoreUndoUpdate = true;
             RootPart.Resize(prevScale);
 //            RootPart.IgnoreUndoUpdate = false;
@@ -2645,7 +3073,9 @@ namespace OpenSim.Region.Framework.Scenes
                 }
 
 //                obPart.IgnoreUndoUpdate = false;
-//                obPart.StoreUndoState();
+                HasGroupChanged = true;
+                m_rootPart.TriggerScriptChangedEvent(Changed.SCALE);
+                ScheduleGroupForTerseUpdate();
             }
 
 //            m_log.DebugFormat(
@@ -2705,9 +3135,9 @@ namespace OpenSim.Region.Framework.Scenes
         {
             SceneObjectPart part = GetChildPart(localID);
 
-//            SceneObjectPart[] parts = m_parts.GetArray();
-//            for (int i = 0; i < parts.Length; i++)
-//                parts[i].StoreUndoState();
+            SceneObjectPart[] parts = m_parts.GetArray();
+            for (int i = 0; i < parts.Length; i++)
+                parts[i].StoreUndoState();
 
             if (part != null)
             {
@@ -2763,10 +3193,27 @@ namespace OpenSim.Region.Framework.Scenes
                     obPart.OffsetPosition = obPart.OffsetPosition + diff;
             }
 
-            AbsolutePosition = newPos;
+            //We have to set undoing here because otherwise an undo state will be saved
+            if (!m_rootPart.Undoing)
+            {
+                m_rootPart.Undoing = true;
+                AbsolutePosition = newPos;
+                m_rootPart.Undoing = false;
+            }
+            else
+            {
+                AbsolutePosition = newPos;
+            }
 
             HasGroupChanged = true;
-            ScheduleGroupForTerseUpdate();
+            if (m_rootPart.Undoing)
+            {
+                ScheduleGroupForFullUpdate();
+            }
+            else
+            {
+                ScheduleGroupForTerseUpdate();
+            }
         }
 
         #endregion
@@ -2843,10 +3290,7 @@ namespace OpenSim.Region.Framework.Scenes
         public void UpdateSingleRotation(Quaternion rot, uint localID)
         {
             SceneObjectPart part = GetChildPart(localID);
-
             SceneObjectPart[] parts = m_parts.GetArray();
-            for (int i = 0; i < parts.Length; i++)
-                parts[i].StoreUndoState();
 
             if (part != null)
             {
@@ -2884,7 +3328,16 @@ namespace OpenSim.Region.Framework.Scenes
                 if (part.UUID == m_rootPart.UUID)
                 {
                     UpdateRootRotation(rot);
-                    AbsolutePosition = pos;
+                    if (!m_rootPart.Undoing)
+                    {
+                        m_rootPart.Undoing = true;
+                        AbsolutePosition = pos;
+                        m_rootPart.Undoing = false;
+                    }
+                    else
+                    {
+                        AbsolutePosition = pos;
+                    }
                 }
                 else
                 {
@@ -2908,9 +3361,10 @@ namespace OpenSim.Region.Framework.Scenes
 
             Quaternion axRot = rot;
             Quaternion oldParentRot = m_rootPart.RotationOffset;
-
             m_rootPart.StoreUndoState();
-            m_rootPart.UpdateRotation(rot);
+            
+            //Don't use UpdateRotation because it schedules an update prematurely
+            m_rootPart.RotationOffset = rot;
             if (m_rootPart.PhysActor != null)
             {
                 m_rootPart.PhysActor.Orientation = m_rootPart.RotationOffset;
@@ -2924,15 +3378,17 @@ namespace OpenSim.Region.Framework.Scenes
                 if (prim.UUID != m_rootPart.UUID)
                 {
                     prim.IgnoreUndoUpdate = true;
+
+                    Quaternion NewRot = oldParentRot * prim.RotationOffset;
+                    NewRot = Quaternion.Inverse(axRot) * NewRot;
+                    prim.RotationOffset = NewRot;
+
                     Vector3 axPos = prim.OffsetPosition;
+
                     axPos *= oldParentRot;
                     axPos *= Quaternion.Inverse(axRot);
                     prim.OffsetPosition = axPos;
-                    Quaternion primsRot = prim.RotationOffset;
-                    Quaternion newRot = oldParentRot * primsRot;
-                    newRot = Quaternion.Inverse(axRot) * newRot;
-                    prim.RotationOffset = newRot;
-                    prim.ScheduleTerseUpdate();
+
                     prim.IgnoreUndoUpdate = false;
                 }
             }
@@ -2946,8 +3402,8 @@ namespace OpenSim.Region.Framework.Scenes
 ////                    childpart.StoreUndoState();
 //                }
 //            }
-
-            m_rootPart.ScheduleTerseUpdate();
+            HasGroupChanged = true;
+            ScheduleGroupForFullUpdate();
 
 //            m_log.DebugFormat(
 //                "[SCENE OBJECT GROUP]: Updated root rotation of {0} {1} to {2}",
@@ -3175,7 +3631,6 @@ namespace OpenSim.Region.Framework.Scenes
         public float GetMass()
         {
             float retmass = 0f;
-
             SceneObjectPart[] parts = m_parts.GetArray();
             for (int i = 0; i < parts.Length; i++)
                 retmass += parts[i].GetMass();
@@ -3271,6 +3726,14 @@ namespace OpenSim.Region.Framework.Scenes
             SetFromItemID(uuid);
         }
 
+        public void ResetOwnerChangeFlag()
+        {
+            ForEachPart(delegate(SceneObjectPart part)
+            {
+                part.ResetOwnerChangeFlag();
+            });
+        }
+
         #endregion
     }
 }