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。

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This game is a total of 4 off, from easy to difficult, each has its early, keys, reset and exit function.

(1) initialization, including initialization screen initialization and each hurdle, the screen is initialized 80 pixels wide and 25 pixels high.

(2) key processing including mobile the villain and mobile box, so by moving up and down keys to control the movement of the villain, so as to promote the box to push the box to the specified destination for clearance.

(3) Each level can be reset, press the spacebar to reset the current shut.

(4) at any time by pressing the Esc key to exit the game.