基于hge的粒子系统，比hge自带的粒子系统更实用，还带有粒子的路径编辑器。只有源码，没有测试用例，有兴趣的自己研究-Hge-based particle system, particle systems than hge own more practical, but also with the path of the particle editor. Only the source, there is no test case, a