Core/GameObjects: defined and implemented playerCast field for GAMEOBJECT_TYPE_SPELLCASTER

src/server/game/Entities/GameObject/GameObject.cpp

@@ -2236,7 +2236,11 @@ void GameObject::Use(Unit* user)
                 sOutdoorPvPMgr->HandleCustomSpell(player, spellId, this);
 
             // Only count successful spell casts as uses
-            if (CastSpell(user, spellId) == SPELL_CAST_OK)
+            WorldObject* caster = this;
+            if (m_goInfo->spellcaster.playerCast != 0 && user->IsPlayer())
+                caster = user;
+
+            if (caster->CastSpell(user, spellId) == SPELL_CAST_OK)
                 AddUse();
             return;
         }

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

@@ -287,6 +287,7 @@ struct GameObjectTemplate
             uint32 allowMounted;                            //3 Is usable while on mount/vehicle. (0/1)
             uint32 GiganticAOI;                             //4
             uint32 conditionID1;                            //5
+            uint32 playerCast;                              //6
         } spellcaster;
         //23 GAMEOBJECT_TYPE_MEETINGSTONE
         struct