import java.util.Collections;

PImage src, patch0, patch1, patch2, patch3;
ArrayList<PImage> list;
IntList choices;
IntList correct;
int answer_size = 0;
String msg = "Try Again";

void setup()
{
  src = loadImage("mario.png");
  size(512, 512);
  noFill();
  rectMode(CORNERS);
  image(src,0,0);
  patch0 = get(0,0,256,256);
  patch1 = get(257,0,256,256);
  patch2 = get(0,257,256,256);
  patch3 = get(257,257,256,256);
  list = new ArrayList<PImage>();
  list.add(patch0);
  list.add(patch1);
  list.add(patch2);
  list.add(patch3);
  Collections.shuffle(list);
  choices = new IntList();
  correct = new IntList();
  if(list.get(0) == patch0)
    correct.append(0);
  else if(list.get(0) == patch1)
    correct.append(1);
  else if(list.get(0) == patch2)
    correct.append(2);
  else if(list.get(0) == patch3)
    correct.append(3);
  if(list.get(1) == patch0)
    correct.append(0);
  else if(list.get(1) == patch1)
    correct.append(1);
  else if(list.get(1) == patch2)
    correct.append(2);
  else if(list.get(1) == patch3)
    correct.append(3);
  if(list.get(2) == patch0)
    correct.append(0);
  else if(list.get(2) == patch1)
    correct.append(1);
  else if(list.get(2) == patch2)
    correct.append(2);
  else if(list.get(2) == patch3)
    correct.append(3);
  if(list.get(3) == patch0)
    correct.append(0);
  else if(list.get(3) == patch1)
    correct.append(1);
  else if(list.get(3) == patch2)
    correct.append(2);
  else if(list.get(3) == patch3)
    correct.append(3);
}

void draw()
{
  image(list.get(0), 0,0);
  image(list.get(1), 257,0);
  image(list.get(2), 0,257);
  image(list.get(3), 257,257);
  if (answer_size >= 4)
  {
    if (choices.get(0) == correct.get(0) && choices.get(1) == correct.get(1) && choices.get(2) == correct.get(2) && choices.get(3) == correct.get(3))
      msg = "Correct!";
    print(msg);
  }
  else
  {
    print(choices.get(1));
  }
}

void mouseClicked()
{
    if(answer_size < 4)
    {
      if (mouseX < 257 && mouseY < 257)
        choices.append(1);
      else if (mouseX > 257 && mouseY < 257)
        choices.append(2);
      else if (mouseX < 257 && mouseY > 257)
        choices.append(3);
      else
        choices.append(4);
    }
    answer_size++;
}