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Global Vector fields

Hello !

I am tring to use Global Vector fields like explained in the official documentation, but without any success. I have a GPU particle emitter with the global vf module activated, a field in a vector actor volume on my scene, but both seems to completely ignore each other.

I tried to use the same vector field in a local vector field of my emitter and it works just fine ! I have tried to use the same vector field in global mode with other emitter too, but without any reaction.

Could you help me understand what I did wrong ?

Thank you !

Product Version: UE 4.9
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asked Sep 11 '15 at 06:24 AM in Using UE4

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Cerambyx Cerdo
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I answer my own question, it could be useful to a future user :

  • First, I tried to reproduce a basic snow emitter (found in this tutorial : https://www.youtube.com/watch?v=G9vKSqRzhGQ). The original emitter works with Global Vector field, but not my copy. Finally, it was besauce I didn't enabled "set fixed bounds" in the top menu (even if I checked "Use Fixed Relative Bounding Box" in Particle system details). After fixed bounds enabled, GBF was recognized.

  • Then, when I tried to apply this discovery to my working emitter, I got stuck again. The particles didn't reacted to GBF even with bound fixed. It was besause I had "Use Local Space" checked in Required module details of the particle.

Finally, it works like a charm !

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answered Sep 12 '15 at 10:35 AM

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Glitch Bliss
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avatar image breno4551 Oct 07 '15 at 10:57 AM

These details should totally be added to the various wikis about working with Global Vector Fields

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