国外游戏开发者杂志2002年第七期配套代码，包含Jonathan Blow的transmitting vectors的专栏文章的代码--Code of game development magazine in 2002 seventh issue, contains transmitting vectors article codes of Jonathan Blow

OpenGL based Euler Implementation Simple Vectors and Planetary orbits

平面向量运用，实现游戏人物八向图，走，跑，停止。-Plane using vectors to achieve eight game characters to the map, walk, run, stop.