Add generic EventManager.OnObjectAddedToScene and get PrimCountModule to listen for that rather than EventManager.OnParcelPrimCountAdd

OnParcelPrimCountAdd had the wrong semantics for the PrimCountModule - it was invoked for every entity in the scene, not just new ones, which would screw up the untainted count.
Extend automated test for this scenario.

OpenSim/Region/CoreModules/World/Land/LandManagementModule.cs

@@ -854,6 +854,10 @@ namespace OpenSim.Region.CoreModules.World.Land
 
         public void EventManagerOnParcelPrimCountUpdate()
         {
+//            m_log.DebugFormat(
+//                "[LAND MANAGEMENT MODULE]: Triggered EventManagerOnParcelPrimCountUpdate() for {0}", 
+//                m_scene.RegionInfo.RegionName);
+            
             ResetAllLandPrimCounts();
             EntityBase[] entities = m_scene.Entities.GetEntities();
             foreach (EntityBase obj in entities)

OpenSim/Region/CoreModules/World/Land/PrimCountModule.cs

@@ -89,8 +89,7 @@ namespace OpenSim.Region.CoreModules.World.Land
         {
             m_Scene = scene;
 
-            m_Scene.EventManager.OnParcelPrimCountAdd +=
+            m_Scene.EventManager.OnObjectAddedToScene += OnParcelPrimCountAdd;            
-                    OnParcelPrimCountAdd;
             m_Scene.EventManager.OnObjectBeingRemovedFromScene +=
                     OnObjectBeingRemovedFromScene;
             m_Scene.EventManager.OnParcelPrimCountTainted +=
@@ -116,6 +115,7 @@ namespace OpenSim.Region.CoreModules.World.Land
 
         private void OnParcelPrimCountAdd(SceneObjectGroup obj)
         {
+            Console.WriteLine("WIBBLE");
             // If we're tainted already, don't bother to add. The next
             // access will cause a recount anyway
             lock (m_TaintLock)
@@ -173,6 +173,10 @@ namespace OpenSim.Region.CoreModules.World.Land
             ILandObject landObject = m_Scene.LandChannel.GetLandObject(pos.X, pos.Y);
             LandData landData = landObject.LandData;
             
+//            m_log.DebugFormat(
+//                "[PRIM COUNT MODULE]: Object {0} is owned by {1} over land owned by {2}", 
+//                obj.Name, obj.OwnerID, landData.OwnerID);
+
             ParcelCounts parcelCounts;
             if (m_ParcelCounts.TryGetValue(landData.GlobalID, out parcelCounts))
             {
@@ -228,6 +232,8 @@ namespace OpenSim.Region.CoreModules.World.Land
 
         public int GetOwnerCount(UUID parcelID)
         {
+//            m_log.DebugFormat("[PRIM COUNT MODULE]: GetOwnerCount for {0}", parcelID);
+            
             lock (m_TaintLock)
             {
                 if (m_Tainted)

OpenSim/Region/CoreModules/World/Land/Tests/PrimCountModuleTests.cs

@@ -67,6 +67,8 @@ namespace OpenSim.Region.CoreModules.World.Land.Tests
                 = new SceneObjectPart(UUID.Zero, PrimitiveBaseShape.Default, Vector3.Zero, Quaternion.Identity, Vector3.Zero) 
                     { Name = objName, UUID = objUuid };
 
+            Assert.That(pcm.GetOwnerCount(lo.LandData.GlobalID), Is.EqualTo(0));
+            
             scene.AddNewSceneObject(new SceneObjectGroup(part), false);
             
             Assert.That(pcm.GetOwnerCount(lo.LandData.GlobalID), Is.EqualTo(1));

OpenSim/Region/Framework/Scenes/EventManager.cs

@@ -243,6 +243,14 @@ namespace OpenSim.Region.Framework.Scenes
 
         public event EstateToolsSunUpdate OnEstateToolsSunUpdate;
         
+        /// <summary>
+        /// Triggered when an object is added to the scene.
+        /// </summary>
+        public event Action<SceneObjectGroup> OnObjectAddedToScene;
+
+        /// <summary>
+        /// Triggered when an object is removed from the scene.
+        /// </summary>
         public delegate void ObjectBeingRemovedFromScene(SceneObjectGroup obj);
         public event ObjectBeingRemovedFromScene OnObjectBeingRemovedFromScene;
 
@@ -345,6 +353,7 @@ namespace OpenSim.Region.Framework.Scenes
         public delegate void Attach(uint localID, UUID itemID, UUID avatarID);
         public event Attach OnAttach;
         
+        
         /// <summary>
         /// Called immediately after an object is loaded from storage.
         /// </summary>
@@ -800,6 +809,27 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
+        public void TriggerObjectAddedToScene(SceneObjectGroup obj)
+        {
+            Action<SceneObjectGroup> handler = OnObjectAddedToScene;
+            if (handler != null)
+            {
+                foreach (Action<SceneObjectGroup> d in handler.GetInvocationList())
+                {
+                    try
+                    {
+                        d(obj);
+                    }
+                    catch (Exception e)
+                    {
+                        m_log.ErrorFormat(
+                            "[EVENT MANAGER]: Delegate for TriggerObjectAddedToScene failed - continuing.  {0} {1}", 
+                            e.Message, e.StackTrace);
+                    }
+                }
+            }
+        }        
+        
         public void TriggerObjectBeingRemovedFromScene(SceneObjectGroup obj)
         {
             ObjectBeingRemovedFromScene handlerObjectBeingRemovedFromScene = OnObjectBeingRemovedFromScene;

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -1957,7 +1957,13 @@ namespace OpenSim.Region.Framework.Scenes
         /// </param>
         public bool AddNewSceneObject(SceneObjectGroup sceneObject, bool attachToBackup, bool sendClientUpdates)
         {           
-            return m_sceneGraph.AddNewSceneObject(sceneObject, attachToBackup, sendClientUpdates);
+            if (m_sceneGraph.AddNewSceneObject(sceneObject, attachToBackup, sendClientUpdates))
+            {
+                EventManager.TriggerObjectAddedToScene(sceneObject);
+                return true;       
+            }
+            
+            return false;
         }
         
         /// <summary>
@@ -1974,7 +1980,13 @@ namespace OpenSim.Region.Framework.Scenes
         public bool AddNewSceneObject(
             SceneObjectGroup sceneObject, bool attachToBackup, Vector3 pos, Quaternion rot, Vector3 vel)
         {
-            return m_sceneGraph.AddNewSceneObject(sceneObject, attachToBackup, pos, rot, vel);
+            if (m_sceneGraph.AddNewSceneObject(sceneObject, attachToBackup, pos, rot, vel))
+            {            
+                EventManager.TriggerObjectAddedToScene(sceneObject);
+                return true;
+            }
+
+            return false;
         }
 
         /// <summary>