粒子系统的实现，实现游戏中的特效部分，比如：火焰，拖动的痕迹。

贪吃蛇的vc6.0编程游戏，蛇在吃到食物后食物消失，且蛇在移动过程中不留下痕迹-Snake vc6.0 programming game, snake eating food after the food is gone and the snakes during the move without leaving a trace