这是一部很难得的系统而全面的群体仿真书籍，从群体建模，行为规划，碰撞检测到群体渲染都有详细的介绍。

代码说明：

这是一部很难得的系统而全面的群体仿真书籍，从群体建模，行为规划，碰撞检测到群体渲染都有详细的介绍。-This is a rare group of system simulation and comprehensive book, from the group modeling, behavioral planning, collision detection to the groups playing there in detail.