Core/Collision: Ported dynamic line of sight patch by Silverice from MaNGOS and

added lots of improvements
Please re-extract vmaps

src/server/game/Entities/GameObject/GameObject.h

@@ -609,6 +609,7 @@ enum LootState
 };
 
 class Unit;
+class GameObjectModel;
 
 // 5 sec for bobber catch
 #define FISHING_BOBBER_READY_TIME 5
@@ -703,12 +704,15 @@ class GameObject : public WorldObject, public GridObject<GameObject>
         GameobjectTypes GetGoType() const { return GameobjectTypes(GetByteValue(GAMEOBJECT_BYTES_1, 1)); }
         void SetGoType(GameobjectTypes type) { SetByteValue(GAMEOBJECT_BYTES_1, 1, type); }
         GOState GetGoState() const { return GOState(GetByteValue(GAMEOBJECT_BYTES_1, 0)); }
-        void SetGoState(GOState state) { SetByteValue(GAMEOBJECT_BYTES_1, 0, state); }
+        void SetGoState(GOState state);
         uint8 GetGoArtKit() const { return GetByteValue(GAMEOBJECT_BYTES_1, 2); }
         void SetGoArtKit(uint8 artkit);
         uint8 GetGoAnimProgress() const { return GetByteValue(GAMEOBJECT_BYTES_1, 3); }
         void SetGoAnimProgress(uint8 animprogress) { SetByteValue(GAMEOBJECT_BYTES_1, 3, animprogress); }
         static void SetGoArtKit(uint8 artkit, GameObject* go, uint32 lowguid = 0);
+        
+        void SetPhaseMask(uint32 newPhaseMask, bool update);
+        void EnableCollision(bool enable);
 
         void Use(Unit* user);
 
@@ -790,6 +794,9 @@ class GameObject : public WorldObject, public GridObject<GameObject>
         GameObjectAI* AI() const { return m_AI; }
 
         std::string GetAIName() const;
+        void SetDisplayId(uint32 displayid);
+        
+        GameObjectModel * m_model;
     protected:
         bool AIM_Initialize();
         uint32      m_spellId;
@@ -819,6 +826,7 @@ class GameObject : public WorldObject, public GridObject<GameObject>
     private:
         void RemoveFromOwner();
         void SwitchDoorOrButton(bool activate, bool alternative = false);
+        void UpdateModel();                                 // updates model in case displayId were changed
 
         //! Object distance/size - overridden from Object::_IsWithinDist. Needs to take in account proper GO size.
         bool _IsWithinDist(WorldObject const* obj, float dist2compare, bool /*is3D*/) const