public void findTarget(List<Hero> heroes, List<Tower> towers){
		if(target == null){
		for(Hero hero:heroes){
			if(targetIsInRange(hero)){
				target = hero;
				break;
			}
		}
		for(Tower tower:towers){
			if(targetIsInRange(tower)){
				target = tower;
				break;
			}
		}
		}
	}