if (e.getSource() == fastItem) {

snake.speed = Snake.FAST;

speedLabel.setText("Fast");

}

}

};

pauseItem.addActionListener(l);

beginItem.addActionListener(l);

newItem.addActionListener(l);

aboutItem.addActionListener(l);

slowItem.addActionListener(l);

midItem.addActionListener(l);

fastItem.addActionListener(l);

addKeyListener(new KeyListener() {

public void keyPressed(KeyEvent e) {

switch (e.getKeyCode()) {

// ------------方向键改变蛇运行方向

case KeyEvent.VK_DOWN://

snake.changeDerection(Snake.DOWN); break;

case KeyEvent.VK_UP://

snake.changeDerection(Snake.UP); break;

case KeyEvent.VK_LEFT://

snake.changeDerection(Snake.LEFT); break;

case KeyEvent.VK_RIGHT://

snake.changeDerection(Snake.RIGHT); break;

// 空格键，游戏暂停或继续

case KeyEvent.VK_SPACE://

if (snake.isRun == true) {

snake.isRun = false;

snake.status = Snake.PAUSED; break;

}

if (snake.isRun == false) {

snake.isRun = true;

snake.status = Snake.RUNNING; break;

}

}

}