void OnTriggerEnter2D(Collider2D coll)
 {
     if (coll.gameObject.tag == "Allied")
     {
         targetShipScript = coll.gameObject.GetComponentInParent <SharedSpecsScript> ();
         targetShipScript.healthPoints -= Random.Range(1f, 3f);
         Instantiate(explosionAni, transform.position, transform.rotation);
         Destroy(gameObject);
     }
 }
 void OnTriggerEnter2D(Collider2D coll)
 {
     if (coll.gameObject.tag == "Enemy")
     {
         Instantiate(explosionAniMissile, transform.position, transform.rotation);
         targetScript = coll.gameObject.GetComponent <SharedSpecsScript>();
         targetScript.healthPoints -= Random.Range(80f, 120f);
         Destroy(gameObject);
     }
 }
 void Awake()
 {
     thisSpriteRenderer = gameObject.GetComponent <SpriteRenderer> ();
     parentScript       = GetComponentInParent <SharedSpecsScript> ();
 }