void OnTriggerExit(Collider other)
 {
     if (other.tag == "TankTrigger")
     {
         TankRangeTrigger otherScript = other.GetComponent <TankRangeTrigger>();
         tankScript.RemoveTarget(otherScript.tankScript.myTargetID);
     }
 }
 void OnTriggerEnter(Collider other)
 {
     if (other.tag == "TankTrigger")
     {
         TankRangeTrigger otherScript = other.GetComponent <TankRangeTrigger>();
         tankScript.AddNewTarget(otherScript.tankScript.myTargetID);
     }
 }