Fix bug where objects could not be set to a new group if the group had been created in that client session, or if no other action has been performed on the object.

There were two problems here:
1) On object group update, we looked for the group is the IClientAPI group cache rather than in the groups service.  This fails to groups created newly in that session
2) On object group update, we weren't setting the HasGroupChanged flag.  This meant that the change was not persisted unless some other action set this flag.
This commit fixes these issues and hopefully addresses http://opensimulator.org/mantis/view.php?id=5588
This commit also moves HandleObjectGroupUpdate() to the GroupsModule from the Scene.PacketHandlers.cs file

4 files changed, 8 insertions, 17 deletions

diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index b43b227..4914d65 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -2776,7 +2776,6 @@ namespace OpenSim.Region.Framework.Scenes
 
         public virtual void SubscribeToClientParcelEvents(IClientAPI client)
         {
-            client.OnObjectGroupRequest += m_sceneGraph.HandleObjectGroupUpdate;
             client.OnParcelReturnObjectsRequest += LandChannel.ReturnObjectsInParcel;
             client.OnParcelSetOtherCleanTime += LandChannel.SetParcelOtherCleanTime;
             client.OnParcelBuy += ProcessParcelBuy;
@@ -2903,7 +2902,6 @@ namespace OpenSim.Region.Framework.Scenes
 
         public virtual void UnSubscribeToClientParcelEvents(IClientAPI client)
         {
-            client.OnObjectGroupRequest -= m_sceneGraph.HandleObjectGroupUpdate;
             client.OnParcelReturnObjectsRequest -= LandChannel.ReturnObjectsInParcel;
             client.OnParcelSetOtherCleanTime -= LandChannel.SetParcelOtherCleanTime;
             client.OnParcelBuy -= ProcessParcelBuy;
@@ -4287,7 +4285,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// Get a scene object group that contains the prim with the given local id
         /// </summary>
         /// <param name="localID"></param>
-        /// <returns>null if no scene object group containing that prim is found</returns>
+        /// <returns>null if no scene object group containing that prim is found</returns>        
         public SceneObjectGroup GetGroupByPrim(uint localID)
         {
             return m_sceneGraph.GetGroupByPrim(localID);
diff --git a/OpenSim/Region/Framework/Scenes/SceneGraph.cs b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
index af95c28..a3e4b46 100644
--- a/OpenSim/Region/Framework/Scenes/SceneGraph.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
@@ -575,20 +575,6 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        protected internal void HandleObjectGroupUpdate(
-            IClientAPI remoteClient, UUID GroupID, uint objectLocalID, UUID Garbage)
-        {
-            if (!remoteClient.IsGroupMember(GroupID))
-                return;
-
-            SceneObjectGroup group = GetGroupByPrim(objectLocalID);
-            if (group != null)
-            {
-                if (group.OwnerID == remoteClient.AgentId)
-                    group.SetGroup(GroupID, remoteClient);
-            }
-        }
-
         protected internal ScenePresence CreateAndAddChildScenePresence(
             IClientAPI client, AvatarAppearance appearance, PresenceType type)
         {
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 7bf8c34..abea788 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -3211,6 +3211,8 @@ namespace OpenSim.Region.Framework.Scenes
                 part.Inventory.ChangeInventoryGroup(GroupID);
             }
 
+            HasGroupChanged = true;
+            
             // 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();
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 598b310..b29ecc6 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -3344,6 +3344,11 @@ namespace OpenSim.Region.Framework.Scenes
 
         public void SetGroup(UUID groupID, IClientAPI client)
         {
+            // Scene.AddNewPrims() calls with client == null so can't use this.
+//            m_log.DebugFormat(
+//                "[SCENE OBJECT PART]: Setting group for {0} to {1} for {2}",
+//                Name, groupID, OwnerID);
+
             GroupID = groupID;
             if (client != null)
                 SendPropertiesToClient(client);