源代码实现了二维场景地图的加载，并添加了一个用框框框起来的人物，但他不能走出这个框框，需要有一定编程能力的人去修改完成-Two-dimensional scene source code to load the map, and added a frame box up with the characters, but he can not walk out of the box, need to have some programming ability of people to change