63 lines
1.9 KiB
C#
63 lines
1.9 KiB
C#
using System.Collections.Generic;
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using UnityEngine.Playables;
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using UnityEngine.Timeline;
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namespace UnityEditor.Timeline
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{
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static class ControlPlayableUtility
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{
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public static bool DetectCycle(
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ControlPlayableAsset asset, PlayableDirector director, HashSet<PlayableDirector> set = null)
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{
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if (director == null || asset == null || !asset.updateDirector)
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return false;
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if (set == null)
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set = new HashSet<PlayableDirector>();
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if (set.Contains(director))
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return true;
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var gameObject = asset.sourceGameObject.Resolve(director);
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if (gameObject == null)
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return false;
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set.Add(director);
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foreach (var subDirector in asset.GetComponent<PlayableDirector>(gameObject))
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{
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foreach (var childAsset in GetPlayableAssets(subDirector))
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{
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if (DetectCycle(childAsset, subDirector, set))
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return true;
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}
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}
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set.Remove(director);
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return false;
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}
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public static IEnumerable<ControlPlayableAsset> GetPlayableAssets(PlayableDirector director)
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{
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var timeline = director != null ? (director.playableAsset as TimelineAsset) : null;
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if (timeline != null)
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{
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foreach (var t in timeline.GetOutputTracks())
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{
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var controlTrack = t as ControlTrack;
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if (controlTrack != null)
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{
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foreach (var c in t.GetClips())
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{
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var asset = c.asset as ControlPlayableAsset;
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if (asset != null)
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yield return asset;
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}
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}
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}
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}
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}
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}
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}
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