如何在场景之间淡出 audio/music？

Question

我正在尝试让一些音乐在我开始 android 游戏时淡出。音乐在主菜单中播放，然后在玩家点击播放时淡出。我可以让音乐停止，只是不会淡出。

我试图用这个淡出：

using UnityEngine;
using System.Collections;

public class MusicScript : MonoBehaviour 
{
    static MusicScript instance;
    bool doneFading;

    void Start()
    {
        if(instance == null)
        {
            instance = this;
            DontDestroyOnLoad(gameObject);
        }

        else if (instance != this)
        {
            Destroy(gameObject);
        }
    }

    void Update()
    {
        if (Application.loadedLevelName == "Flappy Drone Gameplay Screen")
        {
            FadeMusic();
            if (doneFading == true)
            {
                Destroy(gameObject);
            }
        }
    }

    IEnumerator FadeMusic()
    {
        for (int i = 9; i > 0; i--)
        {
            Debug.Log("here");
            instance.audio.volume = i * 0.1f;
            yield return new WaitForSeconds(0.5f);
            Debug.Log("lowered volume");
        }
        doneFading = true;
    }

}

感谢任何帮助！

Answer 1

经过一番尝试 Time.deltatime 我发现了一种简单的渐变方法 :)

适用于遇到相同问题的任何人的代码（此代码在特定场景中淡出音乐，但在所有其他场景中保持音乐播放）：

using UnityEngine;
using System.Collections;

public class MusicScript : MonoBehaviour 
{
    static MusicScript instance;
    bool doneFading;

    float timer = 5f;

    void Start()
    {
        if(instance == null)
        {
            instance = this;
            DontDestroyOnLoad(gameObject);
        }

        else if (instance != this)
        {
            Destroy(gameObject);
        }
    }

    void Update()
    {
        if (Application.loadedLevelName == "Flappy Drone Gameplay Screen")
        {
            FadeMusic();
            if (doneFading == true)
            {
                Destroy(gameObject);
                Debug.Log ("Music destroyed.");
            }
        }
    }

    void FadeMusic()
    {
        if (timer > 0)
        {
            instance.audio.volume -= 0.015f;
            timer -= Time.deltaTime;
        }
        if (instance.audio.volume == 0)
        {
            doneFading = true;
        }

    }

}

如何在场景之间淡出 audio/music？

How to fade out audio/music between scenes?

android

audio

unity3d

fade