// short xscale(short x) - Scales x values from camera coordinates to screen coordinates.
short xscale(short x) {
  return ((x - 12) * 99) / 175;
}

// short yscale(short y) - Scales y values from camera coordinates to screen coordinates.
short yscale(short y) {
  return ((143 - y) * 63) / 143;
}