public void Init(GameManager manager)
    {
        instance = this;

        PCtrl = GetComponent <PlayerCtrl>();
        PCtrl.Init(this);

        ECtrl = GetComponent <EnemyCtrl>();
        ECtrl.Init(this);

        playerElfsCtrl = PCtrl.PEPool;
        enemyElfsCtrl  = ECtrl.EEPool;
    }