Problem

ParticleSystem runs on its own internal time and state.
When used in Timeline, particle effects may behave incorrectly during clip transitions, pauses, or timeline scrubbing.

Solution

This script adds a Timeline track and clip for ParticleSystem that synchronizes the effect with Timeline:

• start and stop at clip boundaries
• correct pause behavior
• optional particle clearing on stop
• time mode: restart from clip start or continuous simulation

Installation

Add the script to a Unity project with Timeline installed

Usage

1. Add the track and bind a ParticleSystem
2. Place clips on the track
3. Disable Reseed in the ParticleSystem so the effect remains deterministic when scrubbing Timeline.