ScriptReference/Playables.PlayableDirector.DeferredEvaluate

[giscus[bot]]

ScriptReference/Playables.PlayableDirector.DeferredEvaluate

https://docs.unity3d.com/ScriptReference/Playables.PlayableDirector.DeferredEvaluate.html

[emericoude]

I'm not sure what the editor note is referring to ("This only as an effect in the Editor when not in Play Mode.").I'm getting better results using this then using PlayableGraph.Evaluate() when trying to play a timeline in reverse.

/*
	 * https://discussions.unity.com/t/reversing-timeline/817922/4
	 * https://discussions.unity.com/t/reverse-the-timeline-animation/742170
	 * What won’t work:
	 *	Audio
	 *	Signals/Notfications
	 *	Cinemachine cameras with noise or effects that rely on the previous frame may give different results than playing forward.
	 *	Any custom playables that expect time to go forward.
	 *	Particles will work, but will be less efficient, as moving backwards causes them to re-simulate from the start of the clip.
	 */
	private IEnumerator PlayDirectorInReverse (PlayableDirector playableDirector) {
		playableDirector.Pause(); //could try playableDirector.playableGraph.GetRootPlayable(0).SetSpeed(0);
		double time = playableDirector.time;
		while (time > 0) {
			time -= Time.deltaTime * this.reversedAnimationSpeedModifier;
			playableDirector.time = time;
			playableDirector.DeferredEvaluate(); //documentation says "This only as an effect in the Editor when not in Play Mode.", but I'm getting better, more functional results
			yield return null;
		}
	}

[vertxxyz]

Evaluate is synchronous, and DeferredEvaluate defers execution until PreLateUpdate. You can discover this by looking at the stack trace.

This means that using DeferredEvaluate in LateUpdate will defer it until the next frame (after Update). If called from Update it will run after all other Update calls.