* Added and implemented the LSL changed event.

* An example changed event syntax is at: http://opensimulator.org/wiki/Changed_Event_Example
* You can use this to trigger actions in your script if someone sits on your object_rez
* You can use this to figure out all of the CHANGED_ constants except for CHANGED_REGION, CHANGED_TELEPORT, and CHANGED_ALLOW_DROP

OpenSim/Region/Environment/Scenes/Scene.cs

@@ -1249,6 +1249,7 @@ namespace OpenSim.Region.Environment.Scenes
             return avatar;
         }
 
+
         protected void GetAvatarAppearance(IClientAPI client, out AvatarAppearance appearance)
         {
             if (m_AvatarFactory == null ||
@@ -2190,6 +2191,12 @@ namespace OpenSim.Region.Environment.Scenes
             scriptEngine.InitializeEngine(this, logger);
         }
 
+        public void TriggerObjectChanged(uint localID, uint change)
+        {
+
+            m_eventManager.TriggerOnScriptChangedEvent(localID, change);
+        }
+
         #endregion
 
         #region InnerScene wrapper methods

OpenSim/Region/Environment/Scenes/SceneEvents.cs

@@ -125,7 +125,15 @@ namespace OpenSim.Region.Environment.Scenes
 
         public event NewGridInstantMessage OnGridInstantMessageToGroupsModule;
 
+        public delegate void ScriptChangedEvent(uint localID, uint change);
        
+        public event ScriptChangedEvent OnScriptChangedEvent;
+
+        public void TriggerOnScriptChangedEvent(uint localID, uint change)
+        {
+            if (OnScriptChangedEvent != null)
+                OnScriptChangedEvent(localID,change);
+        }
 
         public void TriggerOnClientMovement(ScenePresence avatar)
         {

OpenSim/Region/Environment/Scenes/SceneObjectPart.Inventory.cs

@@ -203,6 +203,7 @@ namespace OpenSim.Region.Environment.Scenes
             lock (m_taskInventory)
             {            
                 m_taskInventory.Add(item.ItemID, item);
+                TriggerScriptChangedEvent(Changed.INVENTORY);
             }
             
             m_inventorySerial++;
@@ -220,6 +221,7 @@ namespace OpenSim.Region.Environment.Scenes
                 foreach (TaskInventoryItem item in items)
                 {           
                     m_taskInventory.Add(item.ItemID, item);
+                    TriggerScriptChangedEvent(Changed.INVENTORY);
                 }
             }
             
@@ -265,6 +267,7 @@ namespace OpenSim.Region.Environment.Scenes
                 {
                     m_taskInventory[item.ItemID] = item;
                     m_inventorySerial++;
+                    TriggerScriptChangedEvent(Changed.INVENTORY);
                   
                     return true;
                 }
@@ -295,6 +298,7 @@ namespace OpenSim.Region.Environment.Scenes
                     int type = m_taskInventory[itemID].InvType;
                     m_taskInventory.Remove(itemID);
                     m_inventorySerial++;
+                    TriggerScriptChangedEvent(Changed.INVENTORY);
                     
                     return type;
                 }

OpenSim/Region/Environment/Scenes/SceneObjectPart.cs

@@ -42,6 +42,23 @@ using OpenSim.Region.Physics.Manager;
 
 namespace OpenSim.Region.Environment.Scenes
 {
+    // I don't really know where to put this except here.  
+    // Can't access the OpenSim.Region.ScriptEngine.Common.LSL_BaseClass.Changed constants
+
+    [Flags]
+    public enum Changed : uint
+    {
+        INVENTORY = 1,
+        COLOR = 2,
+        SHAPE = 4,
+        SCALE = 8,
+        TEXTURE = 16,
+        LINK = 32,
+        ALLOWED_DROP = 64,
+        OWNER = 128
+    }
+    
+
     public partial class SceneObjectPart : IScriptHost
     {
         private const PermissionMask OBJFULL_MASK_GENERAL =
@@ -186,6 +203,7 @@ namespace OpenSim.Region.Environment.Scenes
         /// <returns></returns>
         public LLQuaternion GetWorldRotation()
         {
+            
             Quaternion newRot;
             
             if (this.LinkNum == 0)
@@ -277,6 +295,7 @@ namespace OpenSim.Region.Environment.Scenes
             {
                 // Hack to get the child prim to update world positions in the physics engine
                 ParentGroup.ResetChildPrimPhysicsPositions();
+                
             }
             catch (System.NullReferenceException)
             {
@@ -427,6 +446,8 @@ namespace OpenSim.Region.Environment.Scenes
             set
             {
                 m_color = value;
+                TriggerScriptChangedEvent(Changed.COLOR);
+                
                 /* ScheduleFullUpdate() need not be called b/c after
                  * setting the color, the text will be set, so then
                  * ScheduleFullUpdate() will be called. */
@@ -477,7 +498,12 @@ namespace OpenSim.Region.Environment.Scenes
         public int LinkNum
         {
             get { return m_linkNum; }
-            set { m_linkNum = value; }
+            set 
+            { 
+                m_linkNum = value;
+                TriggerScriptChangedEvent(Changed.LINK);
+                
+            }
         }
 
         private byte m_clickAction = 0;
@@ -494,16 +520,35 @@ namespace OpenSim.Region.Environment.Scenes
 
         protected PrimitiveBaseShape m_shape;
 
+        public void TriggerScriptChangedEvent(Changed val)
+        {
+            if (m_parentGroup != null)
+            {
+                if (m_parentGroup.Scene != null)
+                    m_parentGroup.Scene.TriggerObjectChanged(LocalID, (uint)val);
+            }
+
+        }
+
         public PrimitiveBaseShape Shape
         {
             get { return m_shape; }
-            set { m_shape = value; }
+            set 
+            {
+                
+                m_shape = value;
+                TriggerScriptChangedEvent(Changed.SHAPE);
+            }
         }
 
         public LLVector3 Scale
         {
-            set { m_shape.Scale = value; }
             get { return m_shape.Scale; }
+            set 
+            { 
+                m_shape.Scale = value;
+                TriggerScriptChangedEvent(Changed.SCALE);
+            }
         }
 
         public bool Stopped
@@ -692,6 +737,8 @@ namespace OpenSim.Region.Environment.Scenes
         {
             BaseMask = NextOwnerMask;
             OwnerMask = NextOwnerMask;
+            TriggerScriptChangedEvent(Changed.OWNER);
+            
         }
 
         public void ApplySanePermissions()
@@ -918,6 +965,7 @@ namespace OpenSim.Region.Environment.Scenes
         public void SetAvatarOnSitTarget(LLUUID avatarID)
         {
             m_SitTargetAvatar = avatarID;
+            TriggerScriptChangedEvent(Changed.LINK);
         }
 
         public LLUUID GetAvatarOnSitTarget()
@@ -1328,6 +1376,7 @@ namespace OpenSim.Region.Environment.Scenes
         public void UpdateTextureEntry(byte[] textureEntry)
         {
             m_shape.TextureEntry = textureEntry;
+            TriggerScriptChangedEvent(Changed.TEXTURE);
             ScheduleFullUpdate();
         }
 

OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs

@@ -68,10 +68,17 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
                 myScriptEngine.World.EventManager.OnObjectGrab += touch_start;
                 myScriptEngine.World.EventManager.OnRezScript += OnRezScript;
                 myScriptEngine.World.EventManager.OnRemoveScript += OnRemoveScript;
+                myScriptEngine.World.EventManager.OnScriptChangedEvent += changed;
                 // TODO: HOOK ALL EVENTS UP TO SERVER!
             }
         }
 
+        public void changed(uint localID, uint change)
+        {
+            // Add to queue for all scripts in localID, Object pass change.
+            myScriptEngine.m_EventQueueManager.AddToObjectQueue(localID,"changed", new object[] {(int) change});
+        }
+
         public void touch_start(uint localID, LLVector3 offsetPos, IClientAPI remoteClient)
         {
             // Add to queue for all scripts in ObjectID object