Size by Speed on Particles has no Effect
I'm having trouble getting size by speed to to work, I have a simple particle system with drag so it slows down over time. I'm expecting the particles to start big and shrink as the speed decreases, however they stay the maximum size the entire time. Is there a step I'm missing to get this to work? Thanks
asked Dec 10 '15 at 05:03 AM in Using UE4
Oh, I think I missunderstood the question, and I'm sorry for that!
So... I think that the Size By Speed module gets the velocity of your particle at a specific time, and multiplies it by the Speed Scale parameter, and by the actual particle size. This may make it difficult to get the default scale of your sprite.
For example, if your particle has a speed value of 1, an initial size of 1, and a Speed Scale value of 30, your particle actual size will be of 30 (all of these, of course, in a specific axis). So, if you want your particle to get back to its size value of 1, it's speed should be something like 0'03.
It's a bit messy, and I may not have expressed myself as clearly as I would like, but you'll have to play with these three values over time to get the desired effect.
Hope this one finally helped!
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