Behold! It's the particle effect~
This is Emitter, the API for particle effects I'm currently working on.
It's still in early stage of development actually, but some basic functions are working already :)
In the example above, the Emitter is a PointEmitter.
I'll make other types of emitters, such as LineEmitter, CircleEmitter, RectEmitter...etc
BTW, you can choose your own asset to be used as particles,
which means using prerendered MovieClip animations are also an option.
This, I believe, can give a boost on CPU performance.