Unity3D实现随机播放背景音频

1.先在第一人称下新建空白物体，命名“audio”

2.在audio中加入Audio Source

3.在第一人称组件里添加Audio Liistener和Audio脚本

4.脚本中添加代码

using UnityEngine;
using System.Collections;

public class audio : MonoBehaviour {

    public AudioSource audioSource;
    public AudioClip otherClip1;
    public AudioClip otherClip2;
    public AudioClip otherClip3;
    public float musicVolume;
    public float randomNum;
    public int state;

    // Use this for initialization
    void Start () {
        musicVolume = 0.5f;
        randomPlay();
    }
    
    // Update is called once per frame
    void Update () {
        audioSource.volume = musicVolume;
        if ((state == 1 && !audioSource.isPlaying)||(state == 2 && !audioSource.isPlaying) ||(state == 3 && !audioSource.isPlaying)) { randomPlay(); }
    }

    void randomPlay()
    {
        randomNum = Random.Range(1.0f, 4.0f);
        if (randomNum >= 1.0f && randomNum < 2.0f) { state = 1; audioSource.clip = otherClip1; audioSource.Play(); }
        else if (randomNum >= 2.0f && randomNum < 3.0f) { state = 2; audioSource.clip = otherClip2; audioSource.Play(); }
        else if (randomNum >= 3.0f && randomNum <= 4.0f) { state = 3; audioSource.clip = otherClip3; audioSource.Play(); }
    }

}