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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() { ret game.getImage(); }
  int w() { ret image().w(); }
  int h() { ret image().h(); }
  L<Rect> submit(Pt p) { ret game.submit(p); }
  
  // implement this method and call submit()
  abstract void go();
}

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

AI > TestAI {
  void go {
    submit(new Pt(random(image().w()), random(image().h())));
  }
}

AI > ErrorAI {
  void go {
    throw new NullPointerException;
  }
}

///////////////
// Main Game //
///////////////

static int w = 400, h = 300;
static int border = 10, fontSize = 30;
static int rounds = 1000;
static S font = #1004887;

static int points, clicks;
static ImageSurface is;
static RGBImage img;
static new HashMap<Rect, Int> words;
static L<Rect> solution;
volatile sbool aiMode;
static JLabel lblScore;

p-substance {
  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("Run " + name);
    onClick(btn, r {
      if (aiMode) ret;
      btn.setText(name + " Running...");
      thread {
        Game game = testAI(c);
        S text = name + " scored " + game.points + " of " + rounds;
        if (game.error != null)
          text += " - ERROR: " + game.error;
        setText(btn, text);
      }
    });
    addToWindow(is, withMargin(btn));
  }
  centerTopFrame(packFrame(is));
  hideConsole();
}

svoid nextImage {
  RGBImage img = rgbImage(Color.white, w, h);
  words.clear();
  for i to 5: {
    int num = random(100);
    S s = str(num);
    RGB color = new RGB(random(0.5), random(0.5), random(0.5));
    renderText_fg.set(color.getColor());
    BufferedImage ti = renderText(font, fontSize, s);
    Rect r;
    do {
      r = randomRect(w, h, border, ti.getWidth(), ti.getHeight());
      if (r == null) fail("Image too small: \*ti.getWidth()*/*\*ti.getHeight()*/ > \*w*/*\*h*/");
    } while (anyRectOverlaps(keys(words), r) && licensed());
    rgbCopy(ti, img, r.x, r.y);
    words.put(r, num);
  }
  solution = keysWithBiggestValue(words);
  
  main.img = img;
  if (aiMode) ret; // occasional updates only when AI is running
  showTheImage();
}

svoid showTheImage {
  bool first = is == null;
  is = showImage(is, img, "Click On The Highest Number!");
  if (first) {
    onLeftClick(is, voidfunc(Pt p) {
      ++clicks;
      if (anyRectContains(solution, p)) {
        ++points;
        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, 20, r {
      if (aiMode) showTheImage();
    });
  }
}

// AI stuff

sclass Game extends GameForAI {
  int points;
  bool submitted;
  Throwable error;
  
  RGBImage getImage() { ret img; }

  L<Rect> submit(Pt p) {
    if (submitted) fail("No multi-submit please");
    submitted = true;
    if (anyRectContains(solution, p)) {
      ++points;
      nextImage();
    }
    ret solution;
  }
}

static Game scoreAI(AI ai, long rounds) {
  aiMode = true;
  try {
    new Game game;
    setOpt(ai, +game);
    long step = 0;
    while (step < rounds) {
      ++step;
      game.submitted = false;
      try {
        ai.go();
      } catch e {
        if (game.error == null) { // print first error to console
          showConsole();
          printStackTrace(e);
        }
        game.error = e;
      }
      //print("Step " + step + ", move: " + p + ", points: " + game.points);
    }
    print("AI " + shortClassName(ai) + " points after " + rounds + " rounds: " + game.points);
    ret game;
  } finally {
    aiMode = false;
    awt { nextImage(); }
  }
}

static Game testAI(Class<? extends AI> c) {
  ret scoreAI(nu(c), rounds);
}

Began life as a copy of #1006656