Update grid system. Try to fix some crashes and transport passengers (now they are despawned after a while).

src/server/game/Maps/Map.cpp

@@ -59,7 +59,7 @@ Map::~Map()
     while (!i_worldObjects.empty())
     {
         WorldObject* obj = *i_worldObjects.begin();
-        ASSERT(obj->m_isWorldObject);
+        ASSERT(obj->IsWorldObject());
         //ASSERT(obj->GetTypeId() == TYPEID_CORPSE);
         obj->RemoveFromWorld();
         obj->ResetMap();
@@ -238,7 +238,7 @@ template<class T>
 void Map::AddToGrid(T* obj, Cell const& cell)
 {
     NGridType* grid = getNGrid(cell.GridX(), cell.GridY());
-    if (obj->m_isWorldObject)
+    if (obj->IsWorldObject())
         grid->GetGridType(cell.CellX(), cell.CellY()).template AddWorldObject<T>(obj);
     else
         grid->GetGridType(cell.CellX(), cell.CellY()).template AddGridObject<T>(obj);
@@ -248,7 +248,7 @@ template<>
 void Map::AddToGrid(Creature* obj, Cell const& cell)
 {
     NGridType* grid = getNGrid(cell.GridX(), cell.GridY());
-    if (obj->m_isWorldObject)
+    if (obj->IsWorldObject())
         grid->GetGridType(cell.CellX(), cell.CellY()).AddWorldObject(obj);
     else
         grid->GetGridType(cell.CellX(), cell.CellY()).AddGridObject(obj);
@@ -256,9 +256,9 @@ void Map::AddToGrid(Creature* obj, Cell const& cell)
     obj->SetCurrentCell(cell);
 }
 
-template<class T>
-void Map::SwitchGridContainers(T* obj, bool on)
+void Map::SwitchGridContainers(Creature* obj, bool on)
 {
+    ASSERT(!obj->IsPermanentWorldObject());
     CellCoord p = Trinity::ComputeCellCoord(obj->GetPositionX(), obj->GetPositionY());
     if (!p.IsCoordValid())
     {
@@ -278,15 +278,18 @@ void Map::SwitchGridContainers(T* obj, bool on)
 
     obj->RemoveFromGrid(); //This step is not really necessary but we want to do ASSERT in remove/add
     if (on)
-        grid.AddWorldObject<T>(obj);
+    {
+        grid.AddWorldObject(obj);
+        AddWorldObject(obj);
+    }
     else
-        grid.AddGridObject<T>(obj);
-    obj->m_isWorldObject = on;
+    {
+        grid.AddGridObject(obj);
+        RemoveWorldObject(obj);
+    }
+    obj->m_isTempWorldObject = on;
 }
 
-template void Map::SwitchGridContainers(Creature*, bool);
-//template void Map::SwitchGridContainers(DynamicObject*, bool);
-
 template<class T>
 void Map::DeleteFromWorld(T* obj)
 {
@@ -909,8 +912,15 @@ bool Map::UnloadGrid(NGridType& ngrid, bool unloadAll)
     const uint32 y = ngrid.getY();
 
     {
-        if (!unloadAll && ActiveObjectsNearGrid(ngrid))
-             return false;
+        if (!unloadAll)
+        {
+            //pets, possessed creatures (must be active), transport passengers
+            if (ngrid.GetWorldObjectCountInNGrid<Creature>())
+                return false;
+
+            if (ActiveObjectsNearGrid(ngrid))
+                return false;
+        }
 
         sLog->outDebug(LOG_FILTER_MAPS, "Unloading grid[%u, %u] for map %u", x, y, GetId());
 
@@ -1975,15 +1985,8 @@ void Map::RemoveAllObjectsInRemoveList()
         bool on = itr->second;
         i_objectsToSwitch.erase(itr);
 
-        switch (obj->GetTypeId())
-        {
-            case TYPEID_UNIT:
-                if (!obj->ToCreature()->isPet())
-                    SwitchGridContainers(obj->ToCreature(), on);
-                break;
-            default:
-                break;
-        }
+        if (obj->GetTypeId() == TYPEID_UNIT && !obj->IsPermanentWorldObject())
+            SwitchGridContainers(obj->ToCreature(), on);
     }
 
     //sLog->outDebug(LOG_FILTER_MAPS, "Object remover 1 check.");

src/server/game/Maps/Map.h

@@ -405,7 +405,7 @@ class Map : public GridRefManager<NGridType>
 
         void RemoveFromActive(Creature* obj);
 
-        template<class T> void SwitchGridContainers(T* obj, bool active);
+        void SwitchGridContainers(Creature* creature, bool toWorldContainer);
         template<class NOTIFIER> void VisitAll(const float &x, const float &y, float radius, NOTIFIER &notifier);
         template<class NOTIFIER> void VisitFirstFound(const float &x, const float &y, float radius, NOTIFIER &notifier);
         template<class NOTIFIER> void VisitWorld(const float &x, const float &y, float radius, NOTIFIER &notifier);