public void TurnOnShield() // turn shield on
 {
     if (!shield.GetIsOn())
     {
         Debug.Log("Shield turned on");
         shield.SetIsOn(true);
         sView.UpdateShieldStatus(shield.GetIsOn());
     }
     else
     {
         Debug.Log("Shield already on!");
     }
 }
 void Start()
 {
     //Create new ShieldModel object
     shield = new ShieldModel();
     sView  = GetComponent <ShieldView>();
     sView.UpdateShieldStatus(shield.GetIsOn());
     sView.UpdateShieldHealth(shield.GetShieldHealth(), shield.GetShieldStrength());
     sView.UpdateShieldStrength(shield.GetShieldStrength());
 }