In my 3D side-scroller game, I’m trying to achieve a sort of “light speed” type effect using Stretched Billboard, but one that can look different at different speeds. When the player is standing still, I want small square particles fading in and out behind them. When the player moves, the particles need to smear and start moving in the opposite direction.
The problem is that I can’t seem to change the properties of already spawned particles. I can alter the speed scale of the particle renderer to cause a smear, but I can’t seem to increase their speed at the same time. Is there any way to do that?