GPU particles not inheriting speed when spawning on event death

Development Asset Creation FX
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1

I’m trying to spawn a large number of gpu particles from the death of a cpu particle, but while spawning cpu particles from the death event inherits the velocity correctly adding the gpu particle module causes the spawned particles to be spawned with no velocity at all.

Am I missing a setting somewhere because inheriting initial velocity seems like it should work for gpu particles?

2

yup, the one in event reciever seems to be broken, emitter initial location module works fine, not this one though.
Will forward it to one of the devs :slight_smile:

3

Hey guys,

Would either of you be willing to provide me with some screenshots and steps, so I can reproduce the issue in a simple project on my end and get a bug entered?

Thanks,

4

94915-particles.png
94915-particles.png1590×943 249 KB

The blue particles are the source, with an event generated on death called “death”.

The green particles are cpu particles and the red ones are gpu particles.
Both share everything except color and the gpu module.

The gpu particles inherit no velocity from the dying particle while the cpu ones do.

5

Thanks for catching this one Bosoft, and providing me with an example image so I could reproduce the issue on my end. I have gone ahead and entered a bug, UE-32164.Once the issue has been addressed by our engineers, the fix will be added to the release notes for fixed issues within an upcoming full engine or hotfix release.

Let me know if you have further questions or need additional assistance.

Thanks,

6

I noticed this is marked as wont fix as it is an old bug. Is there any hope of that changing?

7

perhaps in niagara?

8

I can re-comment on the issue if it is important to your development. We have an auto-expiration for any issue that goes untouched for 6 months or longer, but we can re-open the issue if it is a relevant issue for the community.

If I reopen the issue though, I cannot promise it will get attention as Luos mentioned a lot of cascade issues that are not immediately game breaking are being put on the backlog since we are working to release our new particle editor, Niagra. That is all I can provide at this time, but let me know if you would like me to reopen the issue.

Cheers,

9

Thank you for your response.

The issue is not immediately crucial so I will wait and see what happens with niagara.