public ArrayList<Location> listCircleCoordinates(PirateGame game, Location center, int radius) {
		int a = center.col;
		int b = center.row;
		int upperY;
		int lowerY;
		ArrayList<Location> coords = new ArrayList<Location>();

		for (int i = a-radius; i<=a+radius;i++) {
			upperY = (int) (b + Math.sqrt((radius*radius)-(i-a)));
			lowerY = (int) (b - Math.sqrt((radius*radius)-(i-a)));
			Location loc1 = new Location(i,upperY);
			Location loc2 = new Location(i,lowerY);
			coords.add(loc1);
			coords.add(loc2);
		}
		return coords;
	}