【Unity】Timeline自定义PlayableTrack使用
发表于2018-09-19
在做项目的时候想使用Unity timeline做段动画， 发现BasicPlayableBehaviour已弃用， 而新的PlayableBehaviour不能直接往Playable Track拖。
翻了下文档使用PlayableAsset来新建PlayableBehaviour，然后使用ExposedReference，具体实现如下：
C# PlayableTest代码实现，功能就是当timeline开始播放时，设置Text为true，并把m_DialogStr字符串赋值给Text：
using UnityEngine.Playables;
using UnityEngine.UI;
// A behaviour that is attached to a playable
public class PlayableTest : PlayableBehaviour
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public Text m_DialogContainer;
public string m_DialogStr;
// Called when the state of the playable is set to Play
public override void OnBehaviourPlay(Playable playable, FrameData info)
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if (m_DialogContainer != null)
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m_DialogContainer.gameObject.SetActive(true);
m_DialogContainer.text = m_DialogStr;
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// Called when the state of the playable is set to Paused
public override void OnBehaviourPause(Playable playable, FrameData info)
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if (m_DialogContainer != null)
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m_DialogContainer.gameObject.SetActive(false);
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｝ C# PlayableAssetTest 代码实现，真正拖入Timeline的PlayableTrack中的脚本，在Scene中创建一个UI的Text组件，并把Text组件拖到PlayableAssetTest 上的Text上，在m_DialogStr随便填写一段字符串，运行Unity即可看到效果：
注：Timeline的PlayOnAwake,一定要勾选，否则不会自动执行。当然也可以在代码中调用Timeline的Play()方法。
using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.UI;
[System.Serializable]
public class PlayableAssetTest : PlayableAsset
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public ExposedReference<Text> m_DialogContainer;
public string m_DialogStr;
// Factory method that generates a playable based on this asset
public override Playable CreatePlayable(PlayableGraph graph, GameObject go)
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var playable = ScriptPlayable<PlayableTest>.Create(graph);
playable.GetBehaviour().m_DialogContainer = m_DialogContainer.Resolve(graph.GetResolver());
playable.GetBehaviour().m_DialogStr = m_DialogStr;
return playable;
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下面给出代码控制Timeline执行，把这个脚本挂在Scene中的随便一个GameObject上，不勾选PlayOnAwake，并把之前创建好的Text组件赋值给脚本的Text，把Timeline赋值给脚本的PlayableDirector，OK，现在运行Unity，只有当按下k键时，Timeline才会运行：
using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.Timeline;
using UnityEngine.UI;
public class DialogDirector : MonoBehaviour
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public PlayableDirector director;
public Text text;
void Update()
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if (Input.GetKeyDown(KeyCode.K))
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foreach (PlayableBinding bind in director.playableAsset.outputs)
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if (bind.sourceObject.GetType() == typeof(PlayableTrack))
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PlayableTrack playableTrack = (PlayableTrack)bind.sourceObject;
foreach (var clip in playableTrack.GetClips())
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object clipAsset = clip.asset;
if (clipAsset is PlayableAssetTest)
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PlayableAssetTest test = clipAsset as PlayableAssetTest;
director.SetReferenceValue(test.m_DialogContainer.exposedName, text);
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director.Play();
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来自：https://blog.csdn.net/qq826364410/article/details/80511057
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