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

@ccclass('AudioManager')
export class AudioManager extends Component {
    private static _instance: AudioManager;
    private static _audioSource?: AudioSource;

    static get instance() {
        if (this._instance) {
            return this._instance;
        }

        this._instance = new AudioManager();
        return this._instance;
    }

    protected onLoad(): void {
        this.init();
    }

    /**管理器初始化*/
    init() {
        AudioManager._audioSource = this.node.getComponent(AudioSource);
    }

    /**
    * 播放音乐
    * @param {Boolean} loop 是否循环播放
    */
    playMusic(loop: boolean = true) {
        const audioSource = AudioManager._audioSource!;

        audioSource.loop = loop;
        if (!audioSource.playing) {
            audioSource.play();
        }
    }

    /**
    * 播放音效
    * @param {String} name 音效名称
    * @param {Number} volumeScale 播放音量倍数
    */
    playSound(name: string, volumeScale: number = 1) {
        const audioSource = AudioManager._audioSource!;

        resources.load(name, AudioClip, (err: any, ac) => {
            audioSource.playOneShot(ac, volumeScale);
        });
    }
}