void herir(Transform target)
{
if (target.transform.tag == tagDamage) {
Debug.Log (target.transform.tag);
ds = target.transform.GetComponent<DamageSystem> ();
if (ds) {
Debug.Log (tagDamage + ":" + damage);
ds.hurt (damage);
if (force > 0) {
var direction = target.transform.position - transform.position;
ds.GetComponent<Rigidbody2D>().AddForce (direction.normalized * force / 10, ForceMode2D.Impulse);
}
}
}
}