OWN:b.fallDown();break;
case KeyEvent.VK_LEFT:b.leftMove();break;
case KeyEvent.VK_RIGHT:b.rightMove();break;
case KeyEvent.VK_UP:b.leftTurn();break;
}
}
}
//处理控制类
class Command implements ActionListener{ //接口 ActionListener,用于接收操作事件的侦听器接口。
static final int button_play = 1; //给按钮分配编号
static final int button_levelup = 2;
static final int button_leveldown = 3;
static final int button_quit = 4;