国外游戏开发者杂志1999年第三期配套代码,包含Jeff Lander的碰撞检测的例子和代码--Code of game development magazine in 1998 the third issue,contains Jeff Lander`s example and code about collision detection
国外游戏开发者杂志1998年第十二期配套代码,包含了Jeff Lander的关于形态的例子和代码--Code of game development magazine in 1998 12th issue, it including Jeff Lander example code about shape