如何使用 Discord.py Cogs 制作 Discord 音乐机器人

Question

我目前的项目

我正在尝试将我从 YouTube 视频中制作的 Python 音乐机器人转换为 cog，因此我的主要 Python Discord 机器人文件不会那么混乱。

我的问题

我写的下面的代码不起作用。我阅读了有关 cogs 的文档，但似乎找不到我做错了什么。

这是我尝试制作的代码，但它

import discord
from discord.ext import commands
from discord.utils import get
import youtube_dl
import os
from time import sleep
 
rpgmusicpath = r"path\to\music.mp3"
 
class Music(commands.Cog):
    def __init__(self, client):
        self.bot = client
 
    @commands.Cog.listener()
    async def on_ready(self):
        print('Music cog successfully loaded.')
       
       
    @commands.command(pass_context=True)
    async def rpgmusic(ctx, self):
        global voice
        channel = ctx.message.author.voice.channel
        voice = get(bot.voice_clients, guild=ctx.guild)
 
        if voice and voice.is_connected():
            await voice.move_to(channel)
 
        else:
            voice = await channel.connect()
            print(f'Bot connected to voice channel {channel}\n')
   
        await ctx.send(f'Playing some RPG music in {channel}.')
        sleep(3)
        voice.play(discord.FFmpegPCMAudio('rpgmusic.mp3'), after=lambda e: print(f'RPG music in {channel} has finished playing.'))
        voice.source = discord.PCMVolumeTransformer(voice.source)
        voice.source.volume = 0.05
 
   
    @commands.command(pass_context=True)
    async def join(ctx, self):
        global voice
        channel = ctx.message.author.voice.channel
        voice = get(bot.voice_clients, guild=ctx.guild)
 
        if voice and voice.is_connected():
            await voice.move_to(channel)
 
        else:
            voice = await channel.connect()
            print(f'Bot connected to voice channel {channel}\n')
 
        await ctx.send(f'I joined {channel}.')
   
 
    @commands.command(pass_context=True)
    async def leave(ctx, self):
        channel = ctx.message.author.voice.channel
        voice = get(bot.voice_clients, guild=ctx.guild)
   
        if voice and voice.is_connected():
            await voice.disconnect()
            print(f'Bot disconnected from channel {channel}.')
       
        else:
            print('Not able to disconnect to a voice channel because bot wasn\'t in one.')
       
    @commands.command(pass_context=True)
    async def play(ctx, url: str, self):
        song_there = os.path.isfile('song.mp3')
        try:
            if song_there:
                os.remove('song.mp3')
                print('Removed current song.')
        except PermissionError:
            print('Error in deleting song file. (Song in use.)')
            await ctx.send('Unable to request song. (Song already in use.)')
            return
   
        await ctx.send('Preparing song. Please wait.')
        voice = get(bot.voice_clients, guild=ctx.guild)
 
        ydl_opts = {
            'format': 'bestaudio/best',
            'postprocessors': [{
                    'key': 'FFmpegExtractAudio',
                    'preferredcodec': 'mp3',
                    'preferredquality': '192',
            }],
        }
        with youtube_dl.YoutubeDL(ydl_opts) as ydl:
            print('Downloading audio now.\n')
            ydl.download([url])
 
        for file in os.listdir('./'):
            if file.endswith('.mp3'):
                name = file
                print(f'Renamed File: {file}.')
                os.rename(file, 'song.mp3')
 
        voice.play(discord.FFmpegPCMAudio('song.mp3'), after=lambda e: print(f'{name} has finished playing.'))
        voice.source = discord.PCMVolumeTransformer(voice.source)
        voice.source.volume = 0.06
 
        nname = name.rsplit('-', 2)
        await ctx.send(f'Now playing {name}.')
        print('Now playing.\n')
 
 
def setup(bot):
    bot.add_cog(Music(bot))

Answer 1

两个问题：

• 您没有将bot 替换为self.bot。

在rpgmusic、join、leave 和play 命令中，更改：

voice = get(bot.voice_clients, guild=ctx.guild)

收件人：

voice = get(self.bot.voice_clients, guild=ctx.guild)

• 您的第一个参数必须是self，而不是ctx：

@commands.command(pass_context=True)
async def rpgmusic(self, ctx)

@commands.command(pass_context=True)
async def join(self, ctx)

@commands.command(pass_context=True)
async def play(self, ctx)

另外，由于你有一个join 函数，你可以在rpgmusic 中等待它（你也不需要global voice）：

@commands.command(pass_context=True)
    async def rpgmusic(ctx, self):
        await self.join(ctx)
        await ctx.send(f'Playing some RPG music in {channel}.')
        sleep(3)
        voice.play(discord.FFmpegPCMAudio('rpgmusic.mp3'), after=lambda e: print(f'RPG music in {channel} has finished playing.'))
        voice.source = discord.PCMVolumeTransformer(voice.source)
        voice.source.volume = 0.05