ExposedReference<T0>

描述

创建一个值在运行时可加以解析的类型。

ExposedReference 是一个泛型类型，可用于创建对场景对象的引用，以及通过使用上下文对象在运行时解析它们的实际值。ScriptableObject 或 PlayableAsset 等资源可使用它来创建对场景对象的引用。

以下示例显示 PlayableAsset 如何使用暴露的引用来创建对 Scene GameObject 的引用。 这是一个使用 Timeline 的示例，因此您可能想要首先 set up your GameObject in Timeline并make an animation with your GameObject。

//Put both of these scripts in your Project, then go to your Timeline, click the Add dropdown and choose Playable Track. Place this script on your Timeline as a Playable Track
//Click on the track and choose a GameObject from your Scene in the "My Scene Object" field. Also set the velocity.

using UnityEngine;
using UnityEngine.Playables;

[System.Serializable]
public class ExposedReferenceExample : PlayableAsset
{
    //This allows you to use GameObjects in your Scene
    public ExposedReference<GameObject> m_MySceneObject;
    //This variable allows you to decide the velocity of your GameObject
    public Vector3 m_SceneObjectVelocity;

    public  override Playable CreatePlayable(PlayableGraph graph , GameObject myGameObject)
    {
        //Get access to the Playable Behaviour script
        TestExample playableBehaviour = new TestExample();
        //Resolve the exposed reference on the Scene GameObject by returning the table used by the graph
        playableBehaviour.m_MySceneObject = m_MySceneObject.Resolve(graph.GetResolver());

        //Make the PlayableBehaviour velocity variable the same as the variable you set
        playableBehaviour.m_SceneObjectVelocity = m_SceneObjectVelocity;

        //Create a custom playable from this script using the Player Behaviour script
        return ScriptPlayable<TestExample>.Create(graph, playableBehaviour);
    }
}

将您 Project 中的下一个脚本放在与上述脚本相同的文件夹中。 该脚本通过在 Playable Track 正在播放时移动 Scene GameObject 来更改时间轴的行为。

using  UnityEngine;
using  UnityEngine.Playables;

public  class TestExample : PlayableBehaviour
{
    public GameObject m_MySceneObject;
    public Vector3 m_SceneObjectVelocity;

    public override void PrepareFrame(Playable playable, FrameData frameData)
    {
        //If the Scene GameObject exists, move it continuously until the Playable pauses
        if (m_MySceneObject != null)
            //Move the GameObject using the velocity you set in your Playable Track's inspector
            m_MySceneObject.transform.Translate(m_SceneObjectVelocity);
    }
}

变量

公共函数