Update visibility system

*visibility updates and ai relocations processed simultaneously for each grid
  *these operations now are not synchronized for different grids
  *some changes into structure of visibility notifiers

--HG--
branch : trunk

src/game/Object.h

@@ -98,7 +98,6 @@ enum NotifyFlags
     NOTIFY_NONE                     = 0x00,
     NOTIFY_AI_RELOCATION            = 0x01,
     NOTIFY_VISIBILITY_CHANGED       = 0x02,
-    NOTIFY_PLAYER_VISIBILITY        = 0x04,
     NOTIFY_ALL                      = 0xFF
 };
 
@@ -656,19 +655,16 @@ class WorldObject : public Object, public WorldLocation
         void GetCreatureListWithEntryInGrid(std::list<Creature*>& lList, uint32 uiEntry, float fMaxSearchRange);
 
         void DestroyForNearbyPlayers();
-        void UpdateObjectVisibility();
+        virtual void UpdateObjectVisibility(bool forced = true);
         void BuildUpdate(UpdateDataMapType& );
 
-        //new relocation and visibility system functions
+        //relocation and visibility system functions
         void AddToNotify(uint16 f) { m_notifyflags |= f;}
-        void RemoveFromNotify(uint16 f) { m_notifyflags &= ~f;}
         bool isNeedNotify(uint16 f) const { return m_notifyflags & f;}
-
+        uint16 GetNotifyFlags() const { return m_notifyflags; }
         bool NotifyExecuted(uint16 f) const { return m_executed_notifies & f;}
         void SetNotified(uint16 f) { m_executed_notifies |= f;}
-        void ResetNotifies(uint16 f) { m_executed_notifies |= ~f;}
         void ResetAllNotifies() { m_notifyflags = 0; m_executed_notifies = 0; }
-        void ResetAllNotifiesbyMask(uint16 f) { m_notifyflags &= ~f; m_executed_notifies &= ~f; }
 
         bool isActiveObject() const { return m_isActive; }
         void setActive(bool isActiveObject);