Niagara follow spline in UN5

Development Asset Creation
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1

Hi.

I’m trying to create FX where particles follow the spline. It was based on this video: N8: Spline based Niagara Effect | UE4 Niagara System For Beginners | AIP - YouTube

I have an actor with spline inside:

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Custom script for particles:

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Spline binded from user parameters:

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As final part, I added spline and fx to world and bind spline to fx:

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And got nothing in result!

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I can add niagara effect directly to spline actor and it will work inside preview but doesn’t work in world.

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Any suggestions how to push it to work?

3 Likes
2

I found out how to “fix” it. Just set EmitterProperties → LocalSpase.

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3 Likes
3

I ended up here trying to follow the same tutorial.
In the tutorial he uses the WS (World Space) version of the Sample Spline Position node. I believe this was the mistake.

4

In UE5.4 in the details panel of the emitter “set BP_Spline” was not available but an array of vectors. the BP_Spline can be set though in the Userparameter of the System (drop down menu “SourceActor”)… WARNING: this will let the system always search for this actor - if it is not in the scene placed but the particle system is, this will cause an error.

Alternative approach:

  • set niagara system as Niagara system component in BP_Spline Actor and not separately in scene
  • dont give the niagara system a user spline Actor reference
    grafik
  • set this reference inside the blueprint at begin play with self referencing the blueprint for niagara via the niagara spline name
  • you might need to switch of the “local” in niagara settings if you dont want to depend on the relative spline coordinates of the blueprint