void OnCollisionEnter2D(Collision2D collision)
 {
     if (collision.gameObject.tag == "Ennemy" || collision.gameObject.tag == "Player")
     {
         ship.ApplyCollisionDamage();
         var otherShip = collision.gameObject.GetComponent <ShipScript>();
         if (otherShip != null)
         {
             otherShip.ApplyCollisionDamage();
         }
     }
 }