private void OnTriggerEnter2D(Collider2D collision)
 {
     if (collision.gameObject.CompareTag("Player"))
     {
         gm.GuardarPosicion(transform.position);
         gm.ActivarCheckpoint();
         gm.ResetearCuentaAtras();
         GetComponent <Animator>().SetBool("checkPoinActivado", true);
         GetComponent <AudioSource>().Play();
         Destroy(this);
     }
 }