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///////////////////////////

// Your API to work with //

///////////////////////////

abstract sclass GameForAI {

  abstract RGBImage getImage();

  abstract L<Rect> submit(Pt point); // returns correct solution so AI can learn from it

}

abstract sclass AI {

  // stuff you get

  GameForAI game;

  RGBImage image;

  int steps;

  RGBImage image() { ret image; }

  int w() { ret image.w(); }

  int h() { ret image.h(); }

  L<Rect> submit(Pt p) { ret game.submit(p); }

  L<Rect> submit(Rect r) { ret submit(middleOfRect(r)); }

  L<Rect> submitNothing() { ret game.submit(null); }

  Rect leftRect() { ret main.leftRect(image); }

  Rect rightRect() { ret main.rightRect(image); }

  L<Rect> clickLeft() { ret submit(leftRect()); }

  L<Rect> clickRight() { ret submit(rightRect()); }

  L<Rect> clickLeftIf(bool b) { ret b ? clickLeft() : clickRight(); }

  L<Rect> clickRightIf(bool b) { ret b ? clickRight() : clickLeft(); }

  RGBImage leftImage() { ret image.clip(leftRect()); }

  RGBImage rightImage() { ret image.clip(rightRect()); }

  // implement this method and call submit()

  abstract void go();

  void done() {}

}

static int singleImageWidth(RGBImage img) { ret (img.w()-spacing)/2; }

static Rect leftRect(RGBImage img) {

  int iw = singleImageWidth(img);

  ret new Rect(0, 0, iw, h);

}

static Rect rightRect(RGBImage img) {

  int iw = singleImageWidth(img);

  ret new Rect(iw+spacing, 0, iw, h);

}

//////////////////////////////////////

// Test AIs. Just add your own here //

//////////////////////////////////////

AI > ClickOnBrighterImage {

  void go {

    clickLeftIf(rgbAverageBrightness(leftImage()) > rgbAverageBrightness(rightImage()));

  }

}

///////////////

// Main Game //

///////////////

static S instruction = "Click on the brighter image";

static int w = 150, h = 150; // size of each image (left/right)

static int spacing = 10; // space between the two images

static int rounds = 1000;

static bool alwaysNewImage = true; // prevents AIs being stuck on an image

static int fps = 50;

static int points, clicks;

static ImageSurface is, isWrong;

static long isWrongLast;

static RGBImage img;

static new HashMap<Rect, Int> words;

static L<Rect> solution;

volatile sbool aiMode;

static JLabel lblScore, lblTiming;

static new HashMap<Class, AI> ais;

p-substance {

  thread { loadBinarySnippet(#1004373); } // preload applause animation

  nextImage();

  addToWindow(is, withMargin(lblScore = jcenteredBoldLabel("Your score: 0 of 0")));

  for (final Class c : myNonAbstractClassesImplementing(AI)) {

    final S name = shortClassName(c);

    final JButton btn = jbutton(name);

    onClick(btn, r {

      if (aiMode) ret;

      btn.setText(name + " Running...");

      thread {

        Game game = testAI(c, voidfunc(Game game) {

          if (game.step < 50 || (game.step % 10) == 0 || game.step == rounds) {

            S text = name + " scored " + game.points + " of " + game.step;

            if (game.error != null)

              text += " - ERROR: " + game.error;

            setText_noWait(btn, text);

          }

        });

      }

    });

    addToWindow(is, withMargin(btn));

  }

  addToWindow(is, lblTiming = jCenteredLabel(;

  titlePopupMenuItem(is, "Restart AIs", r { clearMapWithCleanUp(ais); });

  addToWindow(is, withMargin(jbutton("Restart AIs", r { clearMapWithCleanUp(ais); })));

  packFrame(is);

  centerTopFrame(is);

  hideConsole();

}

svoid nextImage {

  RGBImage img = rgbImage(0xeef3e6, w*2+spacing, h);

  double l = random(10)/10.0, r = random(10)/10.0;

  Rect lr = leftRect(img), rr = rightRect(img);

  rgbFill(img, lr, new RGB(l));

  rgbFill(img, rr, new RGB(r));

  solution = l > r ? ll(lr) : l == r ? ll(lr, rr) : ll(rr);

  main.img = img;

  if (aiMode) ret; // occasional updates only when AI is running

  showTheImage();

}

svoid showTheImage {

  bool first = is == null;

  is = showZoomedImage_centered(is, img, 1.5);

  if (first) {

    setFrameTitle(is, instruction);

    onLeftClick(is, voidfunc(Pt p) {

      ++clicks;

      if (anyRectContains(solution, is.pointFromComponentCoordinates(p))) {

        ++points;

        nextImage();

      } else if (alwaysNewImage) nextImage();

      lblScore.setText(print("Your score: " + points + " of " + clicks));

    });

    disableImageSurfaceSelector(is);

    // animate if idle

    awtEvery(is, 1000, r {

      if (!aiMode && isInForeground(is) && !mouseInComponent(is))

        nextImage();

    });

    // show current image occasionally when AI is running

    awtEvery(is, 1000/fps, r {

      if (aiMode) showTheImage();

    });

  }

}

// AI stuff

sclass Game extends GameForAI {

  int points, step;

  Pt submitted;

  Throwable error;

  RGBImage getImage() { ret img; }

  L<Rect> submit(Pt p) {

    if (submitted != null) fail("No multi-submit please");

    submitted = p == null ? new Pt(-9, -9) : p;

    if (p != null && anyRectContains(solution, p)) {

      ++points;

      if (!alwaysNewImage) nextImage();

    }

    ret solution;

  }

}

static Game scoreAI(AI ai, O onScore) {

  aiMode = true;

  final long start = sysNow();

  try {

    final new Game game;

    setOpt(ai, +game);

    while (game.step < rounds) {

      ++game.step;

      ++ai.steps;

      game.submitted = null;

      int points = game.points;

      RGBImage image = img;

      try {

        setOpt(ai, +image);

        ai.go();

      } catch e {

        if (game.error == null) { // print first error to console

          showConsole();

          printStackTrace(e);

        }

        game.error = e;

      } finally {

        setOpt(ai, image := null);

      }

      if (points == game.points && hasElapsed(isWrongLast, 50)) {

        isWrongLast = sysNow();

        bool first = isWrong == null;

        isWrong = showImage(isWrong, "Last Blunder", rgbMarkPoint(image, game.submitted, Color.red, 3));

        if (first) {

          setFrameWidth(isWrong, 230);

          moveToTopRightCorner(isWrong);

          moveFrameDown(isWrong, 100);

        }

      }

      pcallF(onScore, game);

      if (alwaysNewImage) nextImage();

    }

    print("AI " + shortClassName(ai) + " points after " + rounds + " rounds: " + game.points);

    ai.done();

    if (game.points >= rounds) thread {

      titleStatus(is, "Solved!");

      showAnimationInTopLeftCorner(#1004373, game.points + " of " + rounds + " points!!", 3.0);

    }

    ret game;

  } finally {

    aiMode = false;

    awt {

      lblTiming.setText(formatDouble(toSeconds(sysNow()-start), 1) + " s");

      nextImage();

    }

  }

}

static AI getAI(Class<? extends AI> c) {

  AI ai = ais.get(c);

  if (ai == null) ais.put(c, ai = nu(c));

  ret ai;

}

// onScore: voidfunc(Game)

static Game testAI(Class<? extends AI> c, O onScore) {

  ret scoreAI(getAI(c), onScore);

}