void setupAllLevels() {
  for(int i = 0; i < map.length(); i++) {
    levels.add(new Level(i));
  }

  for(int i = 0; i < levels.size(); i++) {
     levels.get(i).makeLevel();
  }
}

void makeLevel() {
  for(int y = 0; y < map[levelNum].length(); y++) {
    for(int x = 0; x < map[levelNum][y].length(); x++) {
      if(mapKey[map[levelNum][y][x]]) {
        gameObjects.add(new (mapKey[map[levelNum][y][x]])(x * tileSize, y * tileSize, levelNum));
      }
    }
  }
}