3 files changed, 87 insertions, 23 deletions

diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index c48ce3b..da664da 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -349,7 +349,21 @@ namespace OpenSim.Region.Framework.Scenes
         public virtual Quaternion Rotation
         {
             get { return m_rotation; }
-            set { m_rotation = value; }
+            set {
+                lockPartsForRead(true);
+                try
+                {
+                    foreach(SceneObjectPart p in m_parts.Values)
+                    {
+                        p.StoreUndoState(true);
+                    }
+                }
+                finally
+                {
+                    lockPartsForRead(false);
+                }
+                m_rotation = value; 
+            }
         }
 
         public Quaternion GroupRotation
@@ -421,6 +435,7 @@ namespace OpenSim.Region.Framework.Scenes
             get { return m_rootPart.GroupPosition; }
             set
             {
+                
                 Vector3 val = value;
 
                 if ((m_scene.TestBorderCross(val - Vector3.UnitX, Cardinals.E) || m_scene.TestBorderCross(val + Vector3.UnitX, Cardinals.W)
@@ -431,7 +446,10 @@ namespace OpenSim.Region.Framework.Scenes
                 }
 
                 lockPartsForRead(true);
-
+                foreach (SceneObjectPart part in m_parts.Values)
+                {
+                    part.IgnoreUndoUpdate = true;
+                }
                 if (RootPart.GetStatusSandbox())
                 {
                     if (Util.GetDistanceTo(RootPart.StatusSandboxPos, value) > 10)
@@ -443,12 +461,12 @@ namespace OpenSim.Region.Framework.Scenes
                         return;
                     }
                 }
-
                 foreach (SceneObjectPart part in m_parts.Values)
                 {
+                    part.IgnoreUndoUpdate = false;
+                    part.StoreUndoState(true);
                     part.GroupPosition = val;
                 }
-
                 lockPartsForRead(false);
 
                 //if (m_rootPart.PhysActor != null)
@@ -724,7 +742,6 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 foreach (SceneObjectPart part in m_parts.Values)
                 {
-                    
                     Vector3 partscale = part.Scale;
                     Vector3 partoffset = part.OffsetPosition;
 
@@ -3132,7 +3149,6 @@ namespace OpenSim.Region.Framework.Scenes
             SceneObjectPart part = GetChildPart(localID);
             if (part != null)
             {
-                part.IgnoreUndoUpdate = true;
                 if (scale.X > m_scene.m_maxNonphys)
                     scale.X = m_scene.m_maxNonphys;
                 if (scale.Y > m_scene.m_maxNonphys)
@@ -3218,8 +3234,7 @@ namespace OpenSim.Region.Framework.Scenes
                                     y *= a;
                                     z *= a;
                                 }
-                                obPart.IgnoreUndoUpdate = false;
-                                obPart.StoreUndoState();
+                                
                             }
                         }
                     }
@@ -3229,13 +3244,17 @@ namespace OpenSim.Region.Framework.Scenes
                 Vector3 prevScale = part.Scale;
                 prevScale.X *= x;
                 prevScale.Y *= y;
-                prevScale.Z *= z;
+                prevScale.Z *= z;;
+                part.IgnoreUndoUpdate = true;
                 part.Resize(prevScale);
+                part.IgnoreUndoUpdate = false;
 
                 lockPartsForRead(true);
                 {
                     foreach (SceneObjectPart obPart in m_parts.Values)
                     {
+                        obPart.IgnoreUndoUpdate = false;
+                        obPart.StoreUndoState(true);
                         obPart.IgnoreUndoUpdate = true;
                         if (obPart.UUID != m_rootPart.UUID)
                         {
@@ -3251,7 +3270,6 @@ namespace OpenSim.Region.Framework.Scenes
                             obPart.UpdateOffSet(currentpos);
                         }
                         obPart.IgnoreUndoUpdate = false;
-                        obPart.StoreUndoState();
                     }
                 }
                 lockPartsForRead(false);
@@ -3263,7 +3281,6 @@ namespace OpenSim.Region.Framework.Scenes
                 }
 
                 part.IgnoreUndoUpdate = false;
-                part.StoreUndoState();
                 HasGroupChanged = true;
                 ScheduleGroupForTerseUpdate();
             }
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 5b007e6..72ad281 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -3504,9 +3504,12 @@ namespace OpenSim.Region.Framework.Scenes
             m_parentGroup.ScheduleGroupForTerseUpdate();
             //m_parentGroup.ScheduleGroupForFullUpdate();
         }
-
         public void StoreUndoState()
         {
+            StoreUndoState(false);
+        }
+        public void StoreUndoState(bool group)
+        {
             if (!Undoing)
             {
                 if (!IgnoreUndoUpdate)
@@ -3528,7 +3531,7 @@ namespace OpenSim.Region.Framework.Scenes
                             if (m_parentGroup.GetSceneMaxUndo() > 0)
                             {
                                 UndoState nUndo = new UndoState(this);
-
+                                nUndo.GroupChange = group;
                                 m_undo.Push(nUndo);
                             }
 
@@ -4010,6 +4013,15 @@ namespace OpenSim.Region.Framework.Scenes
                         nUndo = new UndoState(this);
                     }
                     UndoState goback = m_undo.Pop();
+                    m_log.Debug("Got goback");
+                    if (goback == null)
+                    {
+                        m_log.Debug("it's null");
+                    }
+                    else
+                    {
+                        m_log.Debug(goback.GroupPosition.ToString());
+                    }
                     if (goback != null)
                     {
                         goback.PlaybackState(this);
diff --git a/OpenSim/Region/Framework/Scenes/UndoState.cs b/OpenSim/Region/Framework/Scenes/UndoState.cs
index 55e407e..77381ab 100644
--- a/OpenSim/Region/Framework/Scenes/UndoState.cs
+++ b/OpenSim/Region/Framework/Scenes/UndoState.cs
@@ -35,6 +35,10 @@ namespace OpenSim.Region.Framework.Scenes
         public Vector3 Position = Vector3.Zero;
         public Vector3 Scale = Vector3.Zero;
         public Quaternion Rotation = Quaternion.Identity;
+        public bool GroupChange = false;
+        public Vector3 GroupPosition = Vector3.Zero;
+        public Quaternion GroupRotation = Quaternion.Identity;
+        public Vector3 GroupScale = Vector3.Zero;
 
         public UndoState(SceneObjectPart part)
         {
@@ -42,12 +46,24 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 if (part.ParentID == 0)
                 {
-                    Position = part.ParentGroup.AbsolutePosition;
+                    GroupScale = part.Shape.Scale;
+
+                    //FUBAR WARNING: Do NOT get the group's absoluteposition here 
+                    //or you'll experience a loop and/or a stack issue
+                    GroupPosition = part.ParentGroup.RootPart.AbsolutePosition;
+                    GroupRotation = part.ParentGroup.Rotation;
+                    Position = part.ParentGroup.RootPart.AbsolutePosition;
                     Rotation = part.RotationOffset;
                     Scale = part.Shape.Scale;
                 }
                 else
                 {
+                    GroupScale = part.Shape.Scale;
+
+                    //FUBAR WARNING: Do NOT get the group's absoluteposition here 
+                    //or you'll experience a loop and/or a stack issue
+                    GroupPosition = part.ParentGroup.RootPart.AbsolutePosition;
+                    GroupRotation = part.ParentGroup.Rotation;
                     Position = part.OffsetPosition;
                     Rotation = part.RotationOffset;
                     Scale = part.Shape.Scale;
@@ -61,14 +77,14 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 if (part.ParentID == 0)
                 {
-                    if (Position == part.ParentGroup.AbsolutePosition && Rotation == part.ParentGroup.Rotation)
+                    if (Position == part.ParentGroup.RootPart.AbsolutePosition && Rotation == part.ParentGroup.Rotation && GroupPosition == part.ParentGroup.RootPart.AbsolutePosition && part.ParentGroup.Rotation == GroupRotation && part.Shape.Scale == GroupScale)
                         return true;
                     else
                         return false;
                 }
                 else
                 {
-                    if (Position == part.OffsetPosition && Rotation == part.RotationOffset && Scale == part.Shape.Scale)
+                    if (Position == part.OffsetPosition && Rotation == part.RotationOffset && Scale == part.Shape.Scale && GroupPosition == part.ParentGroup.RootPart.AbsolutePosition && part.ParentGroup.Rotation == GroupRotation && part.Shape.Scale == GroupScale)
                         return true;
                     else
                         return false;
@@ -84,10 +100,10 @@ namespace OpenSim.Region.Framework.Scenes
             {
                 part.Undoing = true;
 
-                if (part.ParentID == 0)
+                if (part.ParentID == 0 && GroupChange == false)
                 {
                     if (Position != Vector3.Zero)
-                        part.ParentGroup.AbsolutePosition = Position;
+                    part.ParentGroup.AbsolutePosition = Position;
                     part.RotationOffset = Rotation;
                     if (Scale != Vector3.Zero)
                         part.Resize(Scale);
@@ -95,11 +111,30 @@ namespace OpenSim.Region.Framework.Scenes
                 }
                 else
                 {
-                    if (Position != Vector3.Zero)
-                        part.OffsetPosition = Position;
-                    part.UpdateRotation(Rotation);
-                    if (Scale != Vector3.Zero)
-                        part.Resize(Scale); part.ScheduleTerseUpdate();
+                    if (GroupChange)
+                    {
+                        if (Position != Vector3.Zero)
+                        {
+                            //Calculate the scale...
+                            Vector3 gs = part.Shape.Scale;
+                            float scale = GroupScale.Z / gs.Z;
+
+                            //Scale first since it can affect our position
+                            part.ParentGroup.GroupResize(gs * scale, part.LocalId);
+                            part.ParentGroup.AbsolutePosition = GroupPosition;
+                            part.ParentGroup.Rotation = GroupRotation;
+                           
+                        }
+                    }
+                    else
+                    {
+                        if (Position != Vector3.Zero) //We can use this for all the updates since all are set
+                        {
+                            part.OffsetPosition = Position;
+                            part.UpdateRotation(Rotation);
+                            part.Resize(Scale); part.ScheduleTerseUpdate();
+                        }
+                    }
                 }
                 part.Undoing = false;