一个课堂上做得小游戏 用鼠标单机控制小鸟的飞行确保不撞到柱子和地面，游戏有三个状态开始界面 和游戏状态和game over界面 图片是开始界面(A game played in class is controlled by a single mouse to ensure that the birds do not bump into the pillars and the ground. The game has three states, the initial interface and the game state, and the game over interface. The picture is the beginning interface.)