game_h5/smart-shoes-cat-upgrade/assets/Script/Engine/Audio/AudioManager.ts

import BasicManager from "../Basic/BasicManager";
import { _IPlaySound } from "./Data/AudioConfig";
import { _EJsonRes, _IAudioConfig } from "../Data/CommonDataType";
import EventManager from "../Event/EventManager";
import { EventName } from "../Event/EventName";
import JsonResources from "../Resources/JsonResources";
import TimeManager from "../Time/TimeManager";
import Tool from "../Tool/Tool";

/**
 * 音频管理器 - 逻辑层
 */
export default class AudioManager extends BasicManager {

    /**当前背景音乐 */
    private bgm: string;
    /**音频ID列表 */
    private audioIDs: Map<string, cc.AudioSource>;
    /**当前播放音频ID列表 */
    private currentAudioIDs: Map<string, cc.AudioSource>;
    /**资源表 */
    private res: Array<_IAudioConfig>;

    constructor () {
        super();
        Tool.log("生成音频管理器");

        this.audioIDs = new Map<string, cc.AudioSource>();
        this.currentAudioIDs = new Map<string, cc.AudioSource>();

        //失去舞台焦点（切出游戏）的处理
        EventManager.onEvent(EventName.Phone.Phone_Hide, this, () => {
            cc.audioEngine.pauseAll();
        });
        //获得舞台焦点（切回游戏）的处理
        EventManager.onEvent(EventName.Phone.Phone_Show, this, () => {
            cc.audioEngine.resumeAll();
        });
        EventManager.onEvent(EventName.Audio.Audio_PauseMusic, this, () => {
            cc.audioEngine.pauseMusic();
        });
        EventManager.onEvent(EventName.Audio.Audio_ResumeMusic, this, () => {
            cc.audioEngine.resumeMusic();
        });
        EventManager.onEvent(EventName.Audio.Audio_PauseSound, this, (url: string) => {
            if (url != null) {
                this.audioIDs.get(url) && this.audioIDs.get(url).pause();
            }
            else {
                this.currentAudioIDs.forEach((value: cc.AudioSource, key: string) => {
                    value.pause();
                });
            }
        });
        EventManager.onEvent(EventName.Audio.Audio_ResumeSound, this, (url: string) => {
            if (url != null) {
                let value: cc.AudioSource = this.audioIDs.get(url);
                if (value != null) {
                    if (value.getCurrentTime() == 0) {
                        value.play();
                    }
                    else {
                        value.resume();
                    }
                }
            }
            else {
                this.currentAudioIDs.forEach((value: cc.AudioSource, key: string) => {
                    if (value.getCurrentTime() == 0) {
                        value.play();
                    }
                    else {
                        value.resume();
                    }
                });
            }
        });

        EventManager.onEvent(EventName.Audio.Audio_PlayMusic, this, this.onPlayMusic);
        EventManager.onEvent(EventName.Audio.Audio_StopMusic, this, this.onStopMusic);
        EventManager.onEvent(EventName.Audio.Audio_PlaySound, this, this.onPlaySound);
        EventManager.onEvent(EventName.Audio.Audio_StopSound, this, this.onStopSound);
    }

    /**播放背景音乐 */
    public onPlayMusic (url: string): void {
        if (this.res == null) {
            this.res = JsonResources.getResources(_EJsonRes.Audio);
        }
        if (this.bgm == url) {
            if (this.audioIDs.has(url) == true) {
                this.audioIDs.get(url).play();
            }
            return;
        }

        this.bgm = url;
        cc.assetManager.loadBundle("res/audio", (err: Error, prefab: cc.AssetManager.Bundle) => {
            prefab.load(url, cc.AudioClip, (error: Error, clip: cc.AudioClip) => {
                if (this.audioIDs == null || clip == null) {
                    return;
                }

                let audioSource: cc.AudioSource;
                if (this.audioIDs.has(url) == true) {
                    audioSource = this.audioIDs.get(url);
                }
                else {
                    audioSource = new cc.AudioSource();
                    audioSource.loop = (this.res[url] != null)? this.res[url].loop:true;
                    audioSource.clip = prefab.get(url);
                    audioSource.volume = (this.res[url] != null)? this.res[url].volume:1;
                    this.audioIDs.set(url, audioSource);
                }
                audioSource.play();
            });
        });
    }

    /**停止背景音乐 */
    private onStopMusic (url: string): void {
        if (this.audioIDs.has(url) == true) {
            this.audioIDs.get(url).stop();
        }
    }

    /**播放音效 */
    public onPlaySound (playSound: _IPlaySound): void {
        if (this.res == null) {
            this.res = JsonResources.getResources(_EJsonRes.Audio);
        }
        if (this.res == null) {
            return;
        }

        cc.assetManager.loadBundle("res/audio", (err: Error, prefab: cc.AssetManager.Bundle) => {
            prefab.load(playSound.url, cc.AudioClip, (error: Error, clip: cc.AudioClip) => {
                if (this.audioIDs == null || clip == null) {
                    return;
                }
                
                let audioSource: cc.AudioSource;
                if (this.audioIDs.has(playSound.url) == true) {
                    audioSource = this.audioIDs.get(playSound.url);
                }
                else {
                    audioSource = cc.director.getScene().getChildByName('Canvas').addComponent(cc.AudioSource);
                    audioSource.loop = (this.res[playSound.url] != null)? this.res[playSound.url].loop:false;
                    audioSource.clip = prefab.get(playSound.url);
                    audioSource.volume = (this.res[playSound.url] != null)? this.res[playSound.url].volume:1;
                    this.audioIDs.set(playSound.url, audioSource);
                    this.currentAudioIDs.set(playSound.url, audioSource);
                }
                audioSource.play();

                TimeManager.scheduleOnce(this, () => {
                    this.currentAudioIDs.delete(playSound.url);
                    
                    playSound.callback && playSound.callback();
                }, clip.duration);
            });
        });
    }

    /**停止音效 */
    public onStopSound (url: string): void {
        if (this.audioIDs.has(url) == true) {
            this.currentAudioIDs.delete(url);
            this.audioIDs.get(url).stop();
        }
    }

    _destroy () {
        Tool.log("销毁音频管理器");

        cc.audioEngine.uncacheAll();
        
        this.audioIDs = null;
        this.res = null;
        super._destroy();
    }
}