在做这个效果之前先介绍一下Flint：

Flint是一个基于AS3.0的开源的粒子系统类库，让我们在不需要完全接触全部代码的情况下用自己的编码风格来轻松的扩展它，目前只有基于AS3.0的版本。



首先介绍一下基于Flint 创建焰火效果的原理，我们的效果将从屏幕的下方升到屏幕的上方，然后飘落在屏幕的下方。组成焰火的每一个小点，都是粒子系统中的一个粒子。-Before you do this effect about the Flint: Flint is a particle system based on the open source AS3.0 class library, in the case of all the code does not require full contact with their own coding style to easily extend it currently only AS3.0-based version. First, about the rise to the top of the screen based on the principle of Flint create fireworks effects, the effect from the bottom of the screen, and then falling in the bottom of the screen. Every little point up the fireworks are particle systems in a particle.