A fast, easy to use, free, and community supported 2D game engine
djones
Member
I want to turn this:
http://twitpic.com/52oqcu/full
into this:
http://twitpic.com/52oqmb/full
So it "bleeds" light pixels over to the next pixel. If a particle moves up and down it creates a trail of where it has gone.
This is for a space sort of game where I have 5 particle effects firing stars off at different speeds and sizes. So I need to have some sort of common filter I can apply to all of these layers.
How would you achieve such an effect? Thanks in advance.
The easiest way I can think of is to fake it - bake the particle blur into your particle image.
Since, as you say you have particles moving at different speeds, requiring differently-sized trails, have a couple of particle images to choose from (some with longer trails, some with shorter). You could then convert each of your particle effects into a several overlapping effects, such that each ParticleSystem would be shooting stars with a smaller range of speeds and the appropriate particle image for that speed. Alternatively, you could extend ParticleSystem and pick the appropriate image for each particle when it's generated, given its speed.
Hope this helps!
djones
Member
Thanks for the feedback @pfg2009
Does anyone know if it's possible to run some open gl functions over a CCNode to achieve this effect? Perhaps in the same way the CCGridBase works. Takes any CCNode and applies an effect over the top of it.
I noticed it does some lower level work on vertices in open gl.
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