[4.7.6] Reset emitter button inside blueprint editor

Development Programming & Scripting
1

Hi,

I am using Unreal Engine 4.7.6, and inside the blueprint editor, when I click the “Reset emitter” button in one of my particle system component’s detail panel, nothing happens.

After some investigation : this is because the selected UParticleSystemComponent isn’t the one we actually “see” in the viewport. The one that is selected isn’t registered in the preview world, so the ActivateSystem() does nothing with this early out (inside UParticleSystemComponent::ActivateSystem(bool bFlagAsJustAttached) :

if (IsTemplate() == true || !IsRegistered() || !FApp::CanEverRender())

{
return;
}

I think this might be a tricky bug to fix, because it seems to be a wider problem that just the “reset emitter” button not working.
Hope this helps.

2

Hey SeedmanJ-

Thanks for pointing out where the likely problem is with the particle system component. This bug has been reported (UE-15985) for investigation.

Cheers