Changes UpdateFlag in SOP to an enumeration of NONE, TERSE and FULL.

UpdateFlag is now referenced/used only within SOP and SOG. Outsiders are
using ScheduleFullUpdate, ScheduleTerseUpdate or ClearUpdateSchedule on
SOP consistently now. Also started working toward eliminating those
calls to ScheduleFullUpdate, ScheduleTerseUpdate or ClearUpdateSchedule
from outside SOP in favor of just setting properties on SOP and let SOP
decide if an update should be scheduled. This consolidates the update
policy within SOP and the client rather than everywhere that makes
changes to SOP. Some places forget to call update while others call it
multiple times, "just to be sure".

UpdateFlag and Schedule*Update will both be made private shortly.

UpdateFlag is intended to be transient and internal to SOP so it has
been removed from XML serializer for SOPs.

7 files changed, 66 insertions, 74 deletions

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 29966f9..71c39b2 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -3211,7 +3211,7 @@ 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;