protected void OnTriggerExit2D(Collider2D collision)
 {
     if (collision.gameObject.tag == "Enemy")
     {
         DefaultEnemy enemy = collision.GetComponent <DefaultEnemy>();
         if (enemy)
         {
             enemy.Unshield();
         }
     }
 }
    protected virtual void OnCollisionExit2D(Collision2D collision)
    {
        if (collision.gameObject.tag == "Enemy")
        {
            DefaultEnemy enemy = collision.gameObject.GetComponent <DefaultEnemy>();
            if (enemy)
            {
                Debug.Log("Unshielded!!!");

                enemy.Unshield();
            }
        }
    }