14 files changed, 114 insertions, 110 deletions

diff --git a/OpenSim/Region/ClientStack/Linden/Caps/ObjectCaps/UploadObjectAssetModule.cs b/OpenSim/Region/ClientStack/Linden/Caps/ObjectCaps/UploadObjectAssetModule.cs
index c07fc73..e4bacd4 100644
--- a/OpenSim/Region/ClientStack/Linden/Caps/ObjectCaps/UploadObjectAssetModule.cs
+++ b/OpenSim/Region/ClientStack/Linden/Caps/ObjectCaps/UploadObjectAssetModule.cs
@@ -332,7 +332,7 @@ namespace OpenSim.Region.ClientStack.Linden
                 
                 grp.IsAttachment = false;
                 // Required for linking
-                grp.RootPart.UpdateFlag = 0;
+                grp.RootPart.ClearUpdateSchedule();
                 
                 if (m_scene.Permissions.CanRezObject(1, avatar.UUID, pos))
                 {
@@ -345,8 +345,9 @@ namespace OpenSim.Region.ClientStack.Linden
 
             for (int j = 1; j < allparts.Length; j++)
             {
-                rootGroup.RootPart.UpdateFlag = 0;
-                allparts[j].RootPart.UpdateFlag = 0;
+                // Required for linking
+                rootGroup.RootPart.ClearUpdateSchedule();
+                allparts[j].RootPart.ClearUpdateSchedule();
                 rootGroup.LinkToGroup(allparts[j]);
             }
 
diff --git a/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs b/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
index 1da9aab..c952ebf 100644
--- a/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs
@@ -356,12 +356,10 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
                 PresenceInfo[] presences = PresenceService.GetAgents(new string[] { fid });
                 if (presences != null && presences.Length > 0)
                     presence = presences[0];
-                if (presence != null)
-                    im.offline = 0;
+                im.offline = 0;
 
                 im.fromAgentID = fromAgentID.Guid;
                 im.fromAgentName = firstname + " " + lastname;
-                im.offline = (byte)((presence == null) ? 1 : 0);
                 im.imSessionID = im.fromAgentID;
                 im.message = FriendshipMessage(fid);
 
diff --git a/OpenSim/Region/CoreModules/Avatar/InstantMessage/OfflineMessageModule.cs b/OpenSim/Region/CoreModules/Avatar/InstantMessage/OfflineMessageModule.cs
index 8d055d4..de25048 100644
--- a/OpenSim/Region/CoreModules/Avatar/InstantMessage/OfflineMessageModule.cs
+++ b/OpenSim/Region/CoreModules/Avatar/InstantMessage/OfflineMessageModule.cs
@@ -201,26 +201,42 @@ namespace OpenSim.Region.CoreModules.Avatar.InstantMessage
 
         private void UndeliveredMessage(GridInstantMessage im)
         {
-            if ((im.offline != 0)
-                && (!im.fromGroup || (im.fromGroup && m_ForwardOfflineGroupMessages)))
+            if (im.dialog != (byte)InstantMessageDialog.MessageFromObject &&
+                im.dialog != (byte)InstantMessageDialog.MessageFromAgent &&
+                im.dialog != (byte)InstantMessageDialog.GroupNotice &&
+                im.dialog != (byte)InstantMessageDialog.GroupInvitation &&
+                im.dialog != (byte)InstantMessageDialog.InventoryOffered)
             {
-                bool success = SynchronousRestObjectRequester.MakeRequest<GridInstantMessage, bool>(
-                        "POST", m_RestURL+"/SaveMessage/", im);
+                return;
+            }
 
-                if (im.dialog == (byte)InstantMessageDialog.MessageFromAgent)
-                {
-                    IClientAPI client = FindClient(new UUID(im.fromAgentID));
-                    if (client == null)
-                        return;
-
-                    client.SendInstantMessage(new GridInstantMessage(
-                            null, new UUID(im.toAgentID),
-                            "System", new UUID(im.fromAgentID),
-                            (byte)InstantMessageDialog.MessageFromAgent,
-                            "User is not logged in. "+
-                            (success ? "Message saved." : "Message not saved"),
-                            false, new Vector3()));
-                }
+            if (!m_ForwardOfflineGroupMessages)
+            {
+                if (im.dialog == (byte)InstantMessageDialog.GroupNotice ||
+                    im.dialog != (byte)InstantMessageDialog.GroupInvitation)
+                    return;
+            }
+
+            Scene scene = FindScene(new UUID(im.fromAgentID));
+            if (scene == null)
+                scene = m_SceneList[0];
+
+            bool success = SynchronousRestObjectRequester.MakeRequest<GridInstantMessage, bool>(
+                    "POST", m_RestURL+"/SaveMessage/", im);
+
+            if (im.dialog == (byte)InstantMessageDialog.MessageFromAgent)
+            {
+                IClientAPI client = FindClient(new UUID(im.fromAgentID));
+                if (client == null)
+                    return;
+
+                client.SendInstantMessage(new GridInstantMessage(
+                        null, new UUID(im.toAgentID),
+                        "System", new UUID(im.fromAgentID),
+                        (byte)InstantMessageDialog.MessageFromAgent,
+                        "User is not logged in. "+
+                        (success ? "Message saved." : "Message not saved"),
+                        false, new Vector3()));
             }
         }
     }
diff --git a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
index 7324b26..7251bd8 100644
--- a/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
+++ b/OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs
@@ -1714,7 +1714,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
             //m_log.Debug("  >>> CrossPrimGroupIntoNewRegion <<<");
 
             bool successYN = false;
-            grp.RootPart.UpdateFlag = 0;
+            grp.RootPart.ClearUpdateSchedule();
             //int primcrossingXMLmethod = 0;
 
             if (destination != null)
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index f012d72..dff43fd 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -1494,7 +1494,7 @@ namespace OpenSim.Region.Framework.Scenes
                     msg.fromAgentName = "Server";
                     msg.dialog = (byte)19; // Object msg
                     msg.fromGroup = false;
-                    msg.offline = (byte)1;
+                    msg.offline = (byte)0;
                     msg.ParentEstateID = RegionInfo.EstateSettings.ParentEstateID;
                     msg.Position = Vector3.Zero;
                     msg.RegionID = RegionInfo.RegionID.Guid;
diff --git a/OpenSim/Region/Framework/Scenes/SceneGraph.cs b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
index 1af18e7..82ded28 100644
--- a/OpenSim/Region/Framework/Scenes/SceneGraph.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
@@ -1799,7 +1799,7 @@ namespace OpenSim.Region.Framework.Scenes
                             newSet.RemoveAt(0);
 
                             foreach (SceneObjectPart newChild in newSet)
-                                newChild.UpdateFlag = 0;
+                                newChild.ClearUpdateSchedule();
 
                             LinkObjects(newRoot, newSet);
                             if (!affectedGroups.Contains(newRoot.ParentGroup))
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 2ea9854..a0a7344 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -1157,7 +1157,7 @@ namespace OpenSim.Region.Framework.Scenes
 
                     if (!silent)
                     {
-                        part.UpdateFlag = 0;
+                        part.ClearUpdateSchedule();
                         if (part == m_rootPart)
                         {
                             if (!IsAttachment || (AttachedAvatar == avatar.ControllingClient.AgentId) || 
@@ -1735,13 +1735,13 @@ namespace OpenSim.Region.Framework.Scenes
 
             if (UsePhysics && !AbsolutePosition.ApproxEquals(lastPhysGroupPos, 0.02f))
             {
-                m_rootPart.UpdateFlag = 1;
+                m_rootPart.UpdateFlag = UpdateRequired.TERSE;
                 lastPhysGroupPos = AbsolutePosition;
             }
 
             if (UsePhysics && !GroupRotation.ApproxEquals(lastPhysGroupRot, 0.1f))
             {
-                m_rootPart.UpdateFlag = 1;
+                m_rootPart.UpdateFlag = UpdateRequired.TERSE;
                 lastPhysGroupRot = GroupRotation;
             }
 
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index b68cc9f..44f822c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -106,6 +106,13 @@ namespace OpenSim.Region.Framework.Scenes
         SCULPT = 7
     }
 
+    public enum UpdateRequired : byte
+    {
+        NONE = 0,
+        TERSE = 1,
+        FULL = 2
+    }
+
     #endregion Enumerations
 
     public class SceneObjectPart : IScriptHost, ISceneEntity
@@ -254,15 +261,7 @@ namespace OpenSim.Region.Framework.Scenes
 
         private bool m_passTouches;
 
-        /// <summary>
-        /// Only used internally to schedule client updates.
-        /// 0 - no update is scheduled
-        /// 1 - terse update scheduled
-        /// 2 - full update scheduled
-        ///
-        /// TODO - This should be an enumeration
-        /// </summary>
-        private byte m_updateFlag;
+        private UpdateRequired m_updateFlag;
 
         private PhysicsActor m_physActor;
         protected Vector3 m_acceleration;
@@ -884,7 +883,15 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        /// <summary></summary>
+        /// <summary>Update angular velocity and schedule terse update.</summary>
+        public void UpdateAngularVelocity(Vector3 avel)
+        {
+            AngularVelocity = avel;
+            ScheduleTerseUpdate();
+            ParentGroup.HasGroupChanged = true;
+        }
+
+        /// <summary>Get or set angular velocity. Does not schedule update.</summary>
         public Vector3 AngularVelocity
         {
             get
@@ -1023,8 +1030,8 @@ namespace OpenSim.Region.Framework.Scenes
                 TriggerScriptChangedEvent(Changed.SCALE);
             }
         }
-        
-        public byte UpdateFlag
+
+        public UpdateRequired UpdateFlag
         {
             get { return m_updateFlag; }
             set { m_updateFlag = value; }
@@ -1309,9 +1316,9 @@ namespace OpenSim.Region.Framework.Scenes
         /// <summary>
         /// Clear all pending updates of parts to clients
         /// </summary>
-        private void ClearUpdateSchedule()
+        public void ClearUpdateSchedule()
         {
-            m_updateFlag = 0;
+            UpdateFlag = UpdateRequired.NONE;
         }
 
         /// <summary>
@@ -2829,7 +2836,7 @@ namespace OpenSim.Region.Framework.Scenes
                 TimeStampFull = (uint)timeNow;
             }
 
-            m_updateFlag = 2;
+            UpdateFlag = UpdateRequired.FULL;
 
             //            m_log.DebugFormat(
             //                "[SCENE OBJECT PART]: Scheduling full  update for {0}, {1} at {2}",
@@ -2845,13 +2852,13 @@ namespace OpenSim.Region.Framework.Scenes
             if (m_parentGroup == null)
                 return;
 
-            if (m_updateFlag < 1)
+            if (UpdateFlag == UpdateRequired.NONE)
             {
                 m_parentGroup.HasGroupChanged = true;
                 m_parentGroup.QueueForUpdateCheck();
 
                 TimeStampTerse = (uint) Util.UnixTimeSinceEpoch();
-                m_updateFlag = 1;
+                UpdateFlag = UpdateRequired.TERSE;
 
             //                m_log.DebugFormat(
             //                    "[SCENE OBJECT PART]: Scheduling terse update for {0}, {1} at {2}",
@@ -3018,45 +3025,39 @@ namespace OpenSim.Region.Framework.Scenes
             const float POSITION_TOLERANCE = 0.05f;
             const int TIME_MS_TOLERANCE = 3000;
 
-            if (m_updateFlag == 1)
+            switch (UpdateFlag)
             {
-                // Throw away duplicate or insignificant updates
-                if (!RotationOffset.ApproxEquals(m_lastRotation, ROTATION_TOLERANCE) ||
-                    !Acceleration.Equals(m_lastAcceleration) ||
-                    !Velocity.ApproxEquals(m_lastVelocity, VELOCITY_TOLERANCE) ||
-                    Velocity.ApproxEquals(Vector3.Zero, VELOCITY_TOLERANCE) ||
-                    !AngularVelocity.ApproxEquals(m_lastAngularVelocity, VELOCITY_TOLERANCE) ||
-                    !OffsetPosition.ApproxEquals(m_lastPosition, POSITION_TOLERANCE) ||
-                    Environment.TickCount - m_lastTerseSent > TIME_MS_TOLERANCE)
+                case UpdateRequired.TERSE:
                 {
-                    AddTerseUpdateToAllAvatars();
-                    ClearUpdateSchedule();
-
-                    // This causes the Scene to 'poll' physical objects every couple of frames
-                    // bad, so it's been replaced by an event driven method.
-                    //if ((ObjectFlags & (uint)PrimFlags.Physics) != 0)
-                    //{
-                    // Only send the constant terse updates on physical objects!
-                    //ScheduleTerseUpdate();
-                    //}
-
-                    // Update the "last" values
-                    m_lastPosition = OffsetPosition;
-                    m_lastRotation = RotationOffset;
-                    m_lastVelocity = Velocity;
-                    m_lastAcceleration = Acceleration;
-                    m_lastAngularVelocity = AngularVelocity;
-                    m_lastTerseSent = Environment.TickCount;
+                    // Throw away duplicate or insignificant updates
+                    if (!RotationOffset.ApproxEquals(m_lastRotation, ROTATION_TOLERANCE) ||
+                        !Acceleration.Equals(m_lastAcceleration) ||
+                        !Velocity.ApproxEquals(m_lastVelocity, VELOCITY_TOLERANCE) ||
+                        Velocity.ApproxEquals(Vector3.Zero, VELOCITY_TOLERANCE) ||
+                        !AngularVelocity.ApproxEquals(m_lastAngularVelocity, VELOCITY_TOLERANCE) ||
+                        !OffsetPosition.ApproxEquals(m_lastPosition, POSITION_TOLERANCE) ||
+                        Environment.TickCount - m_lastTerseSent > TIME_MS_TOLERANCE)
+                    {
+                        AddTerseUpdateToAllAvatars();
+                        ClearUpdateSchedule();
+
+                        // Update the "last" values
+                        m_lastPosition = OffsetPosition;
+                        m_lastRotation = RotationOffset;
+                        m_lastVelocity = Velocity;
+                        m_lastAcceleration = Acceleration;
+                        m_lastAngularVelocity = AngularVelocity;
+                        m_lastTerseSent = Environment.TickCount;
+                    }
+                    break;
                 }
-            }
-            else
-            {
-                if (m_updateFlag == 2) // is a new prim, just created/reloaded or has major changes
+                case UpdateRequired.FULL:
                 {
                     AddFullUpdateToAllAvatars();
-                    ClearUpdateSchedule();
+                    break;
                 }
             }
+
             ClearUpdateSchedule();
         }
 
@@ -3436,7 +3437,7 @@ namespace OpenSim.Region.Framework.Scenes
             _groupID = groupID;
             if (client != null)
                 SendPropertiesToClient(client);
-            m_updateFlag = 2;
+            UpdateFlag = UpdateRequired.FULL;
         }
 
         /// <summary>
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index 3e3fb0f..1d77b06 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -3212,7 +3212,7 @@ namespace OpenSim.Region.Framework.Scenes
                 foreach (ISceneObject so in cAgent.AttachmentObjects)
                 {
                     ((SceneObjectGroup)so).LocalId = 0;
-                    ((SceneObjectGroup)so).RootPart.UpdateFlag = 0;
+                    ((SceneObjectGroup)so).RootPart.ClearUpdateSchedule();
                     so.SetState(cAgent.AttachmentObjectStates[i++], m_scene);
                     m_scene.IncomingCreateObject(so);
                 }
diff --git a/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs b/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
index e06a222..60cc788 100644
--- a/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
+++ b/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
@@ -316,7 +316,6 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             m_SOPXmlProcessors.Add("ClickAction", ProcessClickAction);
             m_SOPXmlProcessors.Add("Shape", ProcessShape);
             m_SOPXmlProcessors.Add("Scale", ProcessScale);
-            m_SOPXmlProcessors.Add("UpdateFlag", ProcessUpdateFlag);
             m_SOPXmlProcessors.Add("SitTargetOrientation", ProcessSitTargetOrientation);
             m_SOPXmlProcessors.Add("SitTargetPosition", ProcessSitTargetPosition);
             m_SOPXmlProcessors.Add("SitTargetPositionLL", ProcessSitTargetPositionLL);
@@ -584,11 +583,6 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             obj.Scale = Util.ReadVector(reader, "Scale");
         }
 
-        private static void ProcessUpdateFlag(SceneObjectPart obj, XmlTextReader reader)
-        {
-            obj.UpdateFlag = (byte)reader.ReadElementContentAsInt("UpdateFlag", String.Empty);
-        }
-
         private static void ProcessSitTargetOrientation(SceneObjectPart obj, XmlTextReader reader)
         {
             obj.SitTargetOrientation = Util.ReadQuaternion(reader, "SitTargetOrientation");
@@ -1187,7 +1181,6 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             WriteShape(writer, sop.Shape, options);
 
             WriteVector(writer, "Scale", sop.Scale);
-            writer.WriteElementString("UpdateFlag", sop.UpdateFlag.ToString());
             WriteQuaternion(writer, "SitTargetOrientation", sop.SitTargetOrientation); 
             WriteVector(writer, "SitTargetPosition", sop.SitTargetPosition);
             WriteVector(writer, "SitTargetPositionLL", sop.SitTargetPositionLL);
diff --git a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectLinkingTests.cs b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectLinkingTests.cs
index 90cdd7b..a2332bb 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectLinkingTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectLinkingTests.cs
@@ -70,8 +70,8 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             grp2.UpdateGroupRotationR(Quaternion.CreateFromEulers(180 * Utils.DEG_TO_RAD, 0, 0));
             
             // Required for linking
-            grp1.RootPart.UpdateFlag = 0;
-            grp2.RootPart.UpdateFlag = 0;
+            grp1.RootPart.ClearUpdateSchedule();
+            grp2.RootPart.ClearUpdateSchedule();
 
             // Link grp2 to grp1.   part2 becomes child prim to grp1. grp2 is eliminated.
             grp1.LinkToGroup(grp2);
@@ -164,10 +164,10 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             grp4.UpdateGroupRotationR(Quaternion.CreateFromEulers(0, 90 * Utils.DEG_TO_RAD, 0));
 
             // Required for linking
-            grp1.RootPart.UpdateFlag = 0;
-            grp2.RootPart.UpdateFlag = 0;
-            grp3.RootPart.UpdateFlag = 0;
-            grp4.RootPart.UpdateFlag = 0;
+            grp1.RootPart.ClearUpdateSchedule();
+            grp2.RootPart.ClearUpdateSchedule();
+            grp3.RootPart.ClearUpdateSchedule();
+            grp4.RootPart.ClearUpdateSchedule();
 
             // Link grp2 to grp1.   part2 becomes child prim to grp1. grp2 is eliminated.
             grp1.LinkToGroup(grp2);
@@ -198,8 +198,8 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             }
 
             // Required for linking
-            grp1.RootPart.UpdateFlag = 0;
-            grp3.RootPart.UpdateFlag = 0;
+            grp1.RootPart.ClearUpdateSchedule();
+            grp3.RootPart.ClearUpdateSchedule();
 
             // root part should have no offset position or rotation
             Assert.That(part1.OffsetPosition == Vector3.Zero && part1.RotationOffset == Quaternion.Identity,
diff --git a/OpenSim/Region/Framework/Scenes/UndoState.cs b/OpenSim/Region/Framework/Scenes/UndoState.cs
index d34d8e5..860172c 100644
--- a/OpenSim/Region/Framework/Scenes/UndoState.cs
+++ b/OpenSim/Region/Framework/Scenes/UndoState.cs
@@ -158,6 +158,7 @@ namespace OpenSim.Region.Framework.Scenes
             }
             else
             {
+                // Note: Updating these properties on sop automatically schedules an update if needed
                 if (Position != Vector3.Zero)
                 {
 //                        m_log.DebugFormat(
@@ -181,8 +182,6 @@ namespace OpenSim.Region.Framework.Scenes
 
                     part.Resize(Scale);
                 }
-
-                part.ScheduleTerseUpdate();
             }
 
             part.Undoing = false;
@@ -212,6 +211,7 @@ namespace OpenSim.Region.Framework.Scenes
             }
             else
             {
+                // Note: Updating these properties on sop automatically schedules an update if needed
                 if (Position != Vector3.Zero)
                     part.OffsetPosition = Position;
 
@@ -220,8 +220,6 @@ namespace OpenSim.Region.Framework.Scenes
 
                 if (Scale != Vector3.Zero)
                     part.Resize(Scale);
-
-                part.ScheduleTerseUpdate();
             }
 
             part.Undoing = false;
diff --git a/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/GroupsModule.cs b/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/GroupsModule.cs
index b2c0f48..d452905 100644
--- a/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/GroupsModule.cs
+++ b/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/GroupsModule.cs
@@ -881,7 +881,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.XmlRpcGroups
             msg.dialog = dialog;
             // msg.dialog = (byte)OpenMetaverse.InstantMessageDialog.GroupNotice;
             msg.fromGroup = true;
-            msg.offline = (byte)1; // Allow this message to be stored for offline use
+            msg.offline = (byte)0;
             msg.ParentEstateID = 0;
             msg.Position = Vector3.Zero;
             msg.RegionID = UUID.Zero.Guid;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index a51a88b..0750579 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -3351,10 +3351,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         protected void TargetOmega(SceneObjectPart part, LSL_Vector axis, double spinrate, double gain)
         {
-            part.AngularVelocity = new Vector3((float)(axis.x * spinrate), (float)(axis.y * spinrate), (float)(axis.z * spinrate));
-            part.ScheduleTerseUpdate();
-            part.SendTerseUpdateToAllClients();
-            part.ParentGroup.HasGroupChanged = true;
+            part.UpdateAngularVelocity(new Vector3((float)(axis.x * spinrate), (float)(axis.y * spinrate), (float)(axis.z * spinrate)));
          }
 
         public LSL_Integer llGetStartParameter()
@@ -3616,11 +3613,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     parentPrim = targetPart.ParentGroup;
                     childPrim = m_host.ParentGroup;
                 }
-//                byte uf = childPrim.RootPart.UpdateFlag;
-                childPrim.RootPart.UpdateFlag = 0;
+
+                // Required for linking
+                childPrim.RootPart.ClearUpdateSchedule();
                 parentPrim.LinkToGroup(childPrim);
-//                if (uf != (Byte)0)
-//                    parent.RootPart.UpdateFlag = uf;
             }
 
             parentPrim.TriggerScriptChangedEvent(Changed.LINK);
@@ -3701,7 +3697,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     parts.Remove(newRoot);
                     foreach (SceneObjectPart part in parts)
                     {
-                        part.UpdateFlag = 0;
+                        // Required for linking
+                        part.ClearUpdateSchedule();
                         newRoot.ParentGroup.LinkToGroup(part.ParentGroup);
                     }
                     newRoot.ParentGroup.HasGroupChanged = true;