File size: 1,977 Bytes
18a519f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | using System.Collections.Generic;
using UnityEngine.Playables;
using UnityEngine.Timeline;
namespace UnityEditor.Timeline
{
static class ControlPlayableUtility
{
public static bool DetectCycle(
ControlPlayableAsset asset, PlayableDirector director, HashSet<PlayableDirector> set = null)
{
if (director == null || asset == null || !asset.updateDirector)
return false;
if (set == null)
set = new HashSet<PlayableDirector>();
if (set.Contains(director))
return true;
var gameObject = asset.sourceGameObject.Resolve(director);
if (gameObject == null)
return false;
set.Add(director);
foreach (var subDirector in asset.GetComponent<PlayableDirector>(gameObject))
{
foreach (var childAsset in GetPlayableAssets(subDirector))
{
if (DetectCycle(childAsset, subDirector, set))
return true;
}
}
set.Remove(director);
return false;
}
public static IEnumerable<ControlPlayableAsset> GetPlayableAssets(PlayableDirector director)
{
var timeline = director != null ? (director.playableAsset as TimelineAsset) : null;
if (timeline != null)
{
foreach (var t in timeline.GetOutputTracks())
{
var controlTrack = t as ControlTrack;
if (controlTrack != null)
{
foreach (var c in t.GetClips())
{
var asset = c.asset as ControlPlayableAsset;
if (asset != null)
yield return asset;
}
}
}
}
}
}
}
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