private void OnCollisionExit2D(Collision2D other)
 {
     if (IsTarget(other.collider) & this.enabled)
     {
         FS_Manager.RemoveFocus(gameObject);
     }
 }
 private void OnTriggerEnter2D(Collider2D other)
 {
     if (IsTarget(other) & this.enabled)
     {
         FS_Manager.AddFocus(gameObject);
     }
 }