如何使用脚本在UnityEvent中添加Unity组件函数

Question

我创建了一个自定义编辑器，其中自动添加了对象及其组件。

但是如何通过脚本在UnityEvent中放置Unity组件内置函数？

在这种情况下，我想将音频源Play()功能放在UnityEvent脚本中。

Answer 1

希望这有效：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.Events;

[ExecuteInEditMode]
[RequireComponent (typeof (AudioSource))]
public class SceneAnimationEvent : MonoBehaviour {
    public AudioSource audioSrc;
    [SerializeField]
    public UnityEvent events;
    UnityAction methodDelegate;
    bool eventAdded = false;

    void OnEnable(){
        UpdateInspector ();
    }
    void UpdateInspector(){
        if (!eventAdded) {
            audioSrc = GetComponent<AudioSource> ();
            events = new UnityEvent ();
            methodDelegate = System.Delegate.CreateDelegate (typeof(UnityAction), audioSrc, "Play") as UnityAction;
            UnityEditor.Events.UnityEventTools.AddPersistentListener (events, methodDelegate);
            eventAdded = true;
        }
    }
}

Answer 2

您可以使用unityEvent.AddListener

public class EventRunner : MonoBehaviour {

    public AudioSource audioSource;
    public UnityEvent ev;

    IEnumerator Start () {

        //you won't see an entry comes up in the inspector
        ev.AddListener(audioSource.Play);

        while (true)
        {
            ev.Invoke(); //you will hear the sound
            yield return new WaitForSeconds(0.5f);
        }

    }
}

Answer 3

感谢@zayedupal，这是自动创建游戏对象，对象组件并自动在编辑器中添加UnityEvent的完整答案。

[MenuItem("GameObject/Create Animation/With SFX", false, -1)]
static void CreateAnimationWithSFX()
{
    GameObject go = new GameObject("animationWithSFX");
    go.transform.SetParent(Selection.activeTransform);

    AudioSource audioSource = go.AddComponent<AudioSource>();
    audioSource.playOnAwake = false;
    // Automate-add the right channel for audio source
    AudioMixer mixer = Resources.Load("Master") as AudioMixer;
    audioSource.outputAudioMixerGroup = mixer.FindMatchingGroups("SFX")[0];

    SceneAnimationEvent script = go.AddComponent<SceneAnimationEvent>();
    // Automate-add the unity built-in function into UnityEvent
    script.Events = new UnityEvent ();
    UnityAction methodDelegate = System.Delegate.CreateDelegate (typeof(UnityAction), audioSource, "Play") as UnityAction;
    UnityEventTools.AddPersistentListener (script.Events, methodDelegate);

    Undo.RegisterCreatedObjectUndo(go, "Create " + go.name);
    Selection.activeObject = go;
}