public static void OnDoodadDeath(SkEntity a, SkEntity b)
    {
        if (commonDeathEvent != null)
        {
            commonDeathEvent(a, b);
        }

        //--to do
        if (PeGameMgr.IsAdventure)
        {
            SceneDoodadLodCmpt lod = a.gameObject.GetComponent <SceneDoodadLodCmpt>();
            if (lod != null && lod.Index >= 0)
            {
                PeEntity entity = a.gameObject.GetComponent <PeEntity>();
                if (entity != null)
                {
                    bool isSignalTower = a.GetComponentInChildren <MonsterSummoner>() != null;
                    VArtifactTownManager.Instance.OnBuildingDeath(lod.Index, entity.Id, isSignalTower);
                }
            }
        }
    }