Unity AudioManager

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AudioManager : MonoBehaviour {

    public AudioSource musicAudio;
    public AudioClip[] musicClips;

    int currentMusicIndex;

    private void Awake() {
        DontDestroyOnLoad(this);
    }

    void Start() {
        currentMusicIndex = Random.Range(0, musicClips.Length);

        PlayMusic();
    }

    void Update() {
        if (!musicAudio.isPlaying) {
            PlayNextSong();
        }
    }

    #region Music control

    void PlayMusic() {
        // Start playback from the current music index
        musicAudio.clip = musicClips[currentMusicIndex];
        musicAudio.Play();
    }

    void PlayNextSong() {
        // Choose a different track to play
        int newMusicIndex = currentMusicIndex;
        while (newMusicIndex == currentMusicIndex) {
            newMusicIndex = Random.Range(0, musicClips.Length);
        }

        // Set it as the new track and resume playback
        currentMusicIndex = newMusicIndex;
        PlayMusic();
    }

    #endregion
}