Add some ASSERT in add/remove obj to/from grid.

src/server/game/Grids/Grid.h

@@ -58,16 +58,19 @@ class Grid
          */
         template<class SPECIFIC_OBJECT> void AddWorldObject(SPECIFIC_OBJECT *obj)
         {
-            if (!i_objects.template insert<SPECIFIC_OBJECT>(obj))
-                ASSERT(false);
+            ASSERT(!obj->GetGridRef().isValid());
+            i_objects.template insert<SPECIFIC_OBJECT>(obj);
+            ASSERT(obj->GetGridRef().isValid());
         }
 
         /** an object of interested exits the grid
          */
+        //Actually an unlink is enough, no need to go through the container
         template<class SPECIFIC_OBJECT> void RemoveWorldObject(SPECIFIC_OBJECT *obj)
         {
-            if (!i_objects.template remove<SPECIFIC_OBJECT>(obj))
-                ASSERT(false);
+            ASSERT(obj->GetGridRef().isValid());
+            i_objects.template remove<SPECIFIC_OBJECT>(obj);
+            ASSERT(!obj->GetGridRef().isValid());
         }
 
         /** Refreshes/update the grid. This required for remote grids.
@@ -104,16 +107,18 @@ class Grid
          */
         template<class SPECIFIC_OBJECT> void AddGridObject(SPECIFIC_OBJECT *obj)
         {
-            if (!i_container.template insert<SPECIFIC_OBJECT>(obj))
-                ASSERT(false);
+            ASSERT(!obj->GetGridRef().isValid());
+            i_container.template insert<SPECIFIC_OBJECT>(obj);
+            ASSERT(obj->GetGridRef().isValid());
         }
 
         /** Removes a containter type object from the grid
          */
         template<class SPECIFIC_OBJECT> void RemoveGridObject(SPECIFIC_OBJECT *obj)
         {
-            if (!i_container.template remove<SPECIFIC_OBJECT>(obj))
-                ASSERT(false);
+            ASSERT(obj->GetGridRef().isValid());
+            i_container.template remove<SPECIFIC_OBJECT>(obj);
+            ASSERT(!obj->GetGridRef().isValid());
         }
 
         /*bool NoWorldObjectInGrid() const

src/server/game/Grids/NGrid.h

@@ -120,6 +120,7 @@ class NGrid
         void ResetTimeTracker(time_t interval) { i_GridInfo.ResetTimeTracker(interval); }
         void UpdateTimeTracker(time_t diff) { i_GridInfo.UpdateTimeTracker(diff); }
 
+        /*
         template<class SPECIFIC_OBJECT> void AddWorldObject(const uint32 x, const uint32 y, SPECIFIC_OBJECT *obj)
         {
             GetGridType(x, y).AddWorldObject(obj);
@@ -139,6 +140,7 @@ class NGrid
         {
             GetGridType(x, y).RemoveGridObject(obj);
         }
+        */
 
         // Visit all Grids (cells) in NGrid (grid)
         template<class T, class TT>