!7

p {
  RGBImage a = null, b = rgbShootScreen();
  repeat {
    sleep(500);
    time {
      a = b;
      b = rgbShootScreen();
      
      print("*");
      compare(a, b);
    }
  }
}

svoid compare(RGBImage a, RGBImage b) {
  new HashSet<Pt> deltas;
  for tries to 10: {
    Rect r = randomScreenRect(50, 50);
    RGBImage clip = a.clip(r);
    if (rgbInnerPrecision(clip) >= 0.5f) {
      Rect r2 = rgbSearchPrecise(b, clip);
      if (r2 != null)
        deltas.add(new Pt(r2.x-r.x, r2.y-r.y));
    }
  }
  print("Deltas: " + deltas);
}