Particle emitters #3

I think it is the third time already that I am rewriting my particle system. There is always some effect I want that is missing; lightning, velocity based deformation, pulsating size or color, physics...

Look at how many variables there are already ! And just when I thought I was done, I realized everything is flawed AGAIN. It's the randomization of values ! Those also need more control, so they can change like a sin wave, or linearly, or randomly, or in discrete values...