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Mimicking a Distribution Vector Uniform with a Particle Parameter?

So, I currently have an "Initial Location" module, specifying that particles are to be spawned randomly between 0, 0, 0 and 0, 800, 0.

I want this to be controlled via Blueprint, so I exposed this value as a "Distribution Vector Particle Parameter", but this value is effectively only a "single vector", not a range.

Several answers have suggested I feed a random value created in BP to this parameter, once a frame, on event tick. But this doesn't actually help, in this case: this particle system released hundreds of particles nearly instantly upon activation, and moving a single vector around once a frame doesn't work.

Is there any way to expose this behavior properly?

Product Version: UE 4.12
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asked Jul 21 '16 at 07:10 AM in Rendering

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avatar image iLegacy Oct 05 '16 at 02:16 PM

I would love to know that too!

avatar image norlin Nov 14 '16 at 05:36 AM

Have you found any solution for this?

avatar image IridiumStudios Nov 14 '16 at 06:07 AM

Nope. :( Not sure it's possible at this current moment in time. I ended up literally making 13 different particle systems with different DVPP values and picked which one to spawn in. Not perfect, but...good enough, I guess.

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This reply is a bit late but you can create your own random distribution vector with parameters. See: https://blog.dubbelboer.com/2018/10/14/unreal-distributionvectoruniformparam.html

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answered Oct 14 '18 at 09:20 AM

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answered May 13 '19 at 09:59 PM

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