c# - 在 Unity3d 中的多个场景之间切换时播放连续音乐

Question

我有以下场景

1. 包含带有音频源组件的游戏对象的主菜单场景
2. 一个关于我们的场景

游戏对象脚本:

using UnityEngine;
using System.Collections;

public class ManageMusic : MonoBehaviour
{
    private static ManageMusic _instance;

    public static ManageMusic instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = GameObject.FindObjectOfType<ManageMusic>();

                //Tell unity not to destroy this object when loading a new cene!
                DontDestroyOnLoad(_instance.gameObject);
            }

            return _instance;
        }
    }

    private void Awake()
    {
        if (_instance == null)
        {
            Debug.Log("Null");
            //If I am the first instance, make me the Singleton
            _instance = this;
            DontDestroyOnLoad(this);
        }
        else
        {

            //If a Singleton already exists and you find
            //another reference in scene, destroy it!
            if (this != _instance)
            {
                Play();
                Debug.Log("IsnotNull");
                Destroy(this.gameObject);
            }
        }

    }
    public void Update()
    {
        if (this != _instance)
        {
            _instance = null;
        }
    }
    public void Play()
    {
        this.gameObject.audio.Play();
    }
}

关于我们后退按钮脚本:

using UnityEngine;
using System.Collections;

public class Back_btn : MonoBehaviour 
{
     void OnMouseDown() 
     {
        Application.LoadLevel("MainMenu");

     }
 }

当我点击 aboutUs 按钮时，Game Music 对象 继续播放，我可以听到音乐，但当我返回主菜单时，没有音乐仍在播放。当我返回主菜单并且音频监听器的音量值设置为 1 时，我可以看到游戏对象没有被破坏，但我无法弄清楚这个问题谁能帮我

Answer 1

为此你需要一个单例。

持久单例

Sometimes you need your singletons to last between scenes (forexample, in this case you might want to play music during a scenetransition). One way to do this is to call DontDestroyOnLoad() on yoursingleton.

public class MusicManager : MonoBehaviour 
{
    private static MusicManager _instance;
 
    public static MusicManager instance
    {
        get
        {
            if(_instance == null)
            {
                _instance = GameObject.FindObjectOfType<MusicManager>();
 
                //Tell unity not to destroy this object when loading a new scene!
                DontDestroyOnLoad(_instance.gameObject);
            }
 
            return _instance;
        }
    }
 
    void Awake() 
    {
        if(_instance == null)
        {
            //If I am the first instance, make me the Singleton
            _instance = this;
            DontDestroyOnLoad(this);
        }
        else
        {
            //If a Singleton already exists and you find
            //another reference in scene, destroy it!
            if(this != _instance)
                Destroy(this.gameObject);
        }
    }
 
    public void Play()
    {
        //Play some audio!
    }
}