说明：  本游戏一共4关，由易到难，每一关都有初化、按键处理、重置及退出功能。 （1）初始化包括屏幕初始化和每一关卡的初始化，屏幕被初始化宽80像素，高25像素。 （2）按键处理包括移动小人和移动箱子，通过移动上下左右键来控制小人的移动，从而推动箱子，以把箱子推到指定的目的地为过关。 （3）每一关都可以重置，按空格键可以重置当前关。 （4）按Esc键可以在任何时候退出游戏。
(A total of 4 off the game, from easy to difficult, are the beginning of each off, key handling, reset and exit the function. (1) initialization, including initialization and every screen, the initial level, the screen is initialized to 80 pixels wide, 25 pixels high. (2) key villain and handling including moving boxes moving by moving up and down keys to control the movement of the villain, thus promoting the box to push the box to the specified destination clearance. (3) Each level can be reset, press the space bar to reset the current off. (4) Press the Esc key to exit the game at any time.)