Timeline Particle Control by keijiro - 105

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An example of controlling particle system from timeline.

Unknown LicenseUpdated 250 days agoCreated on December 4th, 2017

Timeline Particle System Control Example

This is an example that shows how to control particle systems from a custom track class.

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Comparison with Control Track

The standard Control Track provides basic functionalities to control a particle system within a timeline track. Although it’s enough for most cases, it has some small limitations.

  • It only provides on/off switch. An extra Animation Track is needed to control particle parameters.
  • The Inherit Velocity module doesn’t work with the Control Track.
  • It overrides the random seed number with the same value even if there are multiple particle systems under the hierarchy.
  • It uses the fixed delta time as a simulation interval. This is not ideal to get smooth animation.

The custom track class (ParticleSystemControlTrack) contained in this example provides the following functionalities.

  • Playhead scrubbing support (not perfect; reset on rewinding).
  • Emission rate control. It’s controllable from both inline animation curves and ease-in/out curves.
  • Inherit Velocity module support.
  • Transform snapping support.
  • Random number override just happens with a single particle system.
  • Animation with system delta time.

License

Copyright © 2017 Unity Technologies

This repository is to be treated as an example content of Unity; you can use the code freely in your projects. Also see the FAQ about example contents.

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