public MainController(MainModel mainModel, MainView mainView) {
        this.mainModel = mainModel;
        this.mainView = mainView;
        //thêm view observer cho model
        mainModel.addObserver(mainView);
        xulyBatDauGame();
    }



public void xulyDiChuyen() {
        mainView.getInGameFrame().addKeyListener(new KeyAdapter() {
            private void move(Direction direction) {
                // di chuyển được nếu ô tiếp theo không phải là đá
                if (!mainModel.onTile(MapElement.ROCK, direction)) {
                    if (mainModel.onTile(MapElement.QUESTION, direction)) {
                        xulyGapCauHoi();
                    }
                    if (mainModel.onTile(MapElement.HONEY, direction)) {
                        xulyChienThang();
                    }
                    mainModel.moveBear(direction);
                    // print coordinate (toa do)
                    mainModel.getBear().getPosition();
                }
            }

            @Override
            public void keyPressed(KeyEvent e) {
                int keycode = e.getKeyCode();
                if (keycode == KeyEvent.VK_W) {
                    mainModel.getBear().setPrevious(mainModel.getBear().getTitleX(), mainModel.getBear().getTitleY());
                    move(Direction.UP);

                }
                if (keycode == KeyEvent.VK_S) {
                    mainModel.getBear().setPrevious(mainModel.getBear().getTitleX(), mainModel.getBear().getTitleY());
                    move(Direction.DOWN);

                }
                if (keycode == KeyEvent.VK_D) {
                    mainModel.getBear().setPrevious(mainModel.getBear().getTitleX(), mainModel.getBear().getTitleY());
                    move(Direction.RIGHT);

                }
                if (keycode == KeyEvent.VK_A) {
                    mainModel.getBear().setPrevious(mainModel.getBear().getTitleX(), mainModel.getBear().getTitleY());
                    move(Direction.LEFT);
                }
            }
        });
    }