Add norm() and map() to MathUtils.

        return start + (stop - start) * amount;

    }

    public static float norm(float start, float stop, float value) {

        return (value - start) / (stop - start);

    }

    public static float map(float minStart, float minStop, float maxStart, float maxStop, float value) {

        return maxStart + (maxStart - maxStop) * ((value - minStart) / (minStop - minStart));

    }

    public static int random(int howbig) {

        return (int) (sRandom.nextFloat() * howbig);

    }