创建  AudioManager脚本。

import { _decorator, Component, Node, loader, AudioSource, AnimationClip, AudioClip } from 'cc';
const { ccclass, property } = _decorator;


@ccclass('AudioManager')
export class AudioManager  {

    private static _instance : AudioManager;
    private static _audioSource?: AudioSource;
    
    static get instance(){
        if(this._instance){
            return this._instance;
        }
        this._instance = new AudioManager();
        return this._instance;
    }
    
    init(audioSource:AudioSource){
        AudioManager._audioSource = audioSource;
    }
    
    playMusic(loop: boolean) {
       const audioSource = AudioManager._audioSource!;
       audioSource.loop= loop;
       audioSource?.play();
    }

    playSound(name: string) {
        const audioSource = AudioManager._audioSource;
        const path = `audio/sound/${name}`;
        loader.loadRes(path, AudioClip, (err: any, clip: AudioClip) => {
            if (err) {
                console.warn(err);
                return;
            }
            audioSource?.playOneShot(clip,3);
        });
    }

}

定义音乐的常量

//音乐的名称
enum AudioSource {
    BACK_GROUND='background',
    CLICK = 'click',
    CRASH = "crash",
    GET_MONEY = "getMoney",
    IN_CAR = "inCar",
    NEW_ORDER = "newOrder",
    START = "start",
    STOP = "stop",
    TOOTING1 = "tooting1",
    TOOTING2 = "tooting2",
    WIN = "win"
}



@ccclass('Constants')
export class Constants extends Component {
        public static EventName = EventName;
        public static CustomerState = CustomerState;
        public static AudioSource = AudioSource;
}

添加组件AudioSource，播放背景音乐

播放背景音乐

    @property(AudioSource)
    private _audioSource : AudioSource | null = null;


    public onLoad() {
        this.mapManager?.resetMap();
        if(this.carManager&&this.mapManager){
            this.carManager?.resetCars(this.mapManager?.currentPath);
        }
        
        const audioSource = this.getComponent(AudioSource);
        this._audioSource = audioSource;
        //game.addPersistRootNode(this.node);
        if(this._audioSource){
            AudioManager.instance.init(this._audioSource);
            AudioManager.instance.playMusic(true);
        }
    }

播放音效

AudioManager.instance.playSound(Constants.AudioSource.CLICK);

可以设置一些部分的音效，拿到金币，刹车，关门。到终点。