代码实现物体的运动、方向键控制视角、3D物体组合

强大！如何实现多角色控制，学习编程技术，你仅仅需要知道编写一次这样的“效果”，5年以后“代码”依然不变。-Powerful! How to achieve multi-character control, learning programming techniques, you just need to know to write once " effect" , " code" remains the same five years later.