Unreal Niagara For Loop Example

[simonschreibt]

Some more knowledge about iterating over array:

Works:

• GPU Particle System
• Iterate over Array in Particle Update
• At least 1 particle must exist, otherwise the Particle Update isn’t executed (makes sense)
• For better testing, each debug sphere uses a slightly bigger radius with each iteration

Does not work: CPU

• CPU Particle System → For Loop iterates only once

Does not work: Emitter Update

• Executing the loop in Emitter Update → --> For Loop iterates only once
• The problem is NOT the array data (see below)

The array data is correct. It’s really the iteration which doesn’t work when executing the For Loop in Emitter Update! Proof: When I access the array randomly, I get the correct positions: