Size by velocity effect in UE4

Development Asset Creation FX
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1

Hi,

I am trying to do a sparkle effet in UE4 by following an older UDK tutorial. Everything works so far, apart for the fact that size by velocity is absent from UE4. Is there any other way I could make the streaks to be longer according to their velocity?

Basically I want the sparkles to be very small at first and then get longer (Y scaling) as they come down.

I tried the size by life, but maybe I am going about it the wrong way?

Heres a picture of the sparkles so far :slight_smile:

Any help much appreciated

19937-capture.jpg

2

Hey Madvoyer -

You should be able to use the Scaling Factors in the Size by Speed module assuming that you set you particles to Rectangular alignment to achieve the effect you are looking for:

https://docs.unrealengine.com/latest/INT/Engine/Rendering/ParticleSystems/Reference/Modules/Size/index.html#sizebyspeed

Thank You

Eric Ketchum