[8205] Really use trap GO charges and avoid casting in despawned state. Author: VladimirMangos

* Drop horribale hack with stored charges amount, use instead GO info charges data as expected.
    * Count trap activations as charge uses if it have limited charges.
    * Check trap reactions only in ready spawned state.

--HG--
branch : trunk

src/game/GameObject.h

@@ -444,6 +444,17 @@ struct GameObjectInfo
         }
     }
 
+    uint32 GetCharges() const                               // despawn at uses amount
+    {
+        switch(type)
+        {
+            //case GAMEOBJECT_TYPE_TRAP:        return trap.charges;
+            case GAMEOBJECT_TYPE_GUARDPOST:   return guardpost.charges;
+            case GAMEOBJECT_TYPE_SPELLCASTER: return spellcaster.charges;
+            default: return 0;
+        }
+    }
+
     uint32 GetLinkedGameObjectEntry() const
     {
         switch(type)
@@ -692,7 +703,6 @@ class TRINITY_DLL_SPEC GameObject : public WorldObject
 
         uint64 GetRotation() const { return m_rotation; }
     protected:
-        uint32      m_charges;                              // Spell charges for GAMEOBJECT_TYPE_SPELLCASTER (22)
         uint32      m_spellId;
         time_t      m_respawnTime;                          // (secs) time of next respawn (or despawn if GO have owner()),
         uint32      m_respawnDelayTime;                     // (secs) if 0 then current GO state no dependent from timer