Discord音乐 Bot JS源代码

以下是一个使用JavaScript编写的简单Discord音乐Bot的源代码示例。

const Discord = require('discord.js');
const ytdl = require('ytdl-core');

const client = new Discord.Client();

const token = 'YOUR_DISCORD_TOKEN';
const prefix = '!';

const queue = new Map();

client.once('ready', () => {
    console.log('Bot is online!');
});

client.on('message', async message => {
    if (!message.content.startsWith(prefix) || message.author.bot) return;

    const args = message.content.slice(prefix.length).split(' ');
    const command = args.shift().toLowerCase();

    if (command === 'play') {
        execute(message, args);
    } else if (command === 'skip') {
        skip(message);
    } else if (command === 'stop') {
        stop(message);
    }
});

async function execute(message, args) {
    const voiceChannel = message.member.voice.channel;
    if (!voiceChannel) {
        return message.channel.send('请先加入一个语音频道！');
    }
    
    const permissions = voiceChannel.permissionsFor(message.client.user);
    if (!permissions.has('CONNECT') || !permissions.has('SPEAK')) {
        return message.channel.send('我没有足够的权限加入或说话在此语音频道中！');
    }

    const songInfo = await ytdl.getInfo(args[0]);
    const song = {
        title: songInfo.videoDetails.title,
        url: songInfo.videoDetails.video_url,
    };

    let serverQueue = queue.get(message.guild.id);

    if (!serverQueue) {
        const queueConstructor = {
            textChannel: message.channel,
            voiceChannel: voiceChannel,
            connection: null,
            songs: [],
            volume: 5,
            playing: true
        };
        
        queue.set(message.guild.id, queueConstructor);
        queueConstructor.songs.push(song);

        try {
            const connection = await voiceChannel.join();
            queueConstructor.connection = connection;
            play(message.guild, queueConstructor.songs[0]);
        } catch (err) {
            console.error(err);
            queue.delete(message.guild.id);
            return message.channel.send(err);
        }
    } else {
        serverQueue.songs.push(song);
        return message.channel.send(`**${song.title}** 已加入队列！`);
    }
}

function skip(message) {
    const serverQueue = queue.get(message.guild.id);
    if (!message.member.voice.channel) {
        return message.channel.send('你必须在一个语音频道才能跳过歌曲！');
    }
    if (!serverQueue) {
        return message.channel.send('队列为空，无法跳过歌曲！');
    }
    serverQueue.connection.dispatcher.end();
}

function stop(message) {
    const serverQueue = queue.get(message.guild.id);
    if (!message.member.voice.channel) {
        return message.channel.send('你必须在一个语音频道才能停止播放！');
    }
    serverQueue.songs = [];
    serverQueue.connection.dispatcher.end();
}

function play(guild, song) {
    const serverQueue = queue.get(guild.id);
    if (!song) {
        serverQueue.voiceChannel.leave();
        queue.delete(guild.id);
        return;
    }

    const dispatcher = serverQueue.connection
        .play(ytdl(song.url))
        .on('finish', () => {
            serverQueue.songs.shift();
            play(guild, serverQueue.songs[0]);
        })
        .on('error', error => console.error(error));
    dispatcher.setVolumeLogarithmic(serverQueue.volume / 5);

    serverQueue.textChannel.send(`正在播放: **${song.title}**`);
}
    
client.login(token);

请注意，上述代码只是一个示例，它依赖于discord.js和ytdl-core库来处理Discord音乐Bot的功能。您需要在源代码中将YOUR_DISCORD_TOKEN替换为您自己的Discord应用程序的令牌。

该示例中的音乐Bot可以使用!play <Youtube视频链接>命令来播放音乐，!skip命令跳过当前播放的歌曲，!stop命令停止播放并清空队列。

确保在运行之前通过NPM或Yarn安装所需的依赖项：

npm install discord.js ytdl-core

希望这个示例代码对您有所帮助！请记得根据自己的需求进行修改和定制。