直接更改脚本 即可改变效果 粒子系统表示三维计算机图形学中模拟一些特定的模糊现象的技术，而这些现象用其它传统的渲染技术难以实现的真实感的 game physics。经常使用粒子系统模拟的现象有火、爆炸、烟、水流、火花、落叶、云、雾、雪、尘、流星尾迹或者象发光轨迹这样的抽象视觉效果等等。

-Change the scr ipt to change the direct effect of particle systems, said simulated three-dimensional computer graphics, the fuzzy phenomenon specific technology, and these phenomena with other traditional rendering difficult to achieve the realistic game physics. Frequent use of the phenomenon of particle system simulation there is a fire, explosion, smoke, water, sparks, leaves, clouds, fog, snow, dust, meteor trails or tracks such as light-emitting abstract visual effects and so on.