[UE5 Niagara] How to spawn an effect randomly within a specific area? (Unity Sub-emitter equivalent)

[HairDryerWang]

I’m switching from Unity to UE5 and still wrapping my head around Niagara.

I’ve got this base effect working (see attached GIF/screenshot), but I want to make it spawn randomly within a specific area instead of just playing in one fixed spot.

In Unity, I’d usually use sub-emitters for this, but I’m not sure about the best approach in Niagara.

Could anyone point me in the right direction? Any node suggestions or tutorial links would be a huge help. Thanks!

[Drewgoheen]

you could get a random vector from the emitter spawn/update and then have it drive and added offset from the system’s position.

[HairDryerWang]

Thanks so much for the screenshot and breakdown! This node-based approach is really clever—I hadn’t thought of doing it this way, and I’m definitely saving it for future use.

My actual goal right now, however, is to have multiple particle lines (or ribbons) spawning simultaneously within a specific area. I tried using Niagara Events to achieve this, but since they only run on the CPU, the performance cost is just too heavy for an actual game project, haha.

[Drewgoheen]

[UE 5.2] Partition Particles Mini Tutorial of fixed emission

[PartitionParticlesFixed] This is a quick tutorial to explain how I have multiple ribbons in one single emitter as in my chain ribbon effect. Originally I was using my own partition module and didn’t realize that there was a built-in partition module. (It exists in UE 5.0, but I am not sure if it was created in the earlier version). However it still lacks one thing that I’d like to address if you are going to use this built-in module. In this mini tutorial I will only explain one use case only…

Here’s is what you need then I guess.