I’m working with a spline emitter, and I have several lights in my scene driving that emitter. Now I am trying to connect all the lights to a path, where the emitter can inherit that motion. The lights each have a wiggle / time offset expression to give the spline a wave like motion.
When attaching the lights to a null with a position path, the particles emitting from the spline don’t inherit inertia or any new information for stardust to help interpolate that new motion.

I attempted to connect the lights via expressions to the motion path with no new results (I may need to write a new expression).

But at the moment I’m trying to use a motion node to attach to a light path. When I add a new light with my path, it changes my spline emitter.
Is there a way to ignore this new light I add?

I see a function called “Starting with” that when I click pulls a script prompt open saying “All…”. I’m not sure how to use this window.

Might there be another way to use the spline emitter and attach those lights to inherit the velocity/inertia from the new motion?

The expression I used on the 9 spline emitter light’s positions in my scene is this…

seedRandom(1000,true);
wiggle(thisComp.layer(“Light Wiggle Controller”).effect(“Frequency”)(“Slider”),thisComp.layer(“Light Wiggle Controller”).effect(“Magnitude”)(“Slider”),1,.5,time – (thisComp.layer(“Light Wiggle Controller”).effect(“Time offset”)(“Slider”)*index));

This expression makes each of the lights wiggle with the same seed on a timed offset based on the index of the layer. And the controllers let me adjust the timing/magnitude/frequency.

Perhaps I can connect my lights positions to a null path alongside this expression? I havent had much luck getting that working though.

I hope that makes sense.
Thanks!