我正在用 python 制作一个不和谐的音乐机器人。它已经可以完成下载、播放音乐、暂停、恢复、停止等基本操作。
现在我正在尝试创建一个队列。所以机器人会自动播放下一首歌曲，而无需我手动告诉他再播放一些音乐。它已经创建了一个列表作为包含歌曲的队列，但是..
我的问题：我的机器人不知道歌曲什么时候播放完下一首歌曲；没有让机器人播放下一首歌曲的事件。也许有人知道合适的命令或我如何解决该问题？ 我通常使用来自 discord 的事件 ('on_ready', 'on_message', 'on_error', ...)，但我不知道适合队列的事件。
import discord
from discord.ext import commands
import os
import bunchi_commands
import youtube_dl
#intents
intents = discord.Intents.default()
intents.members = True
intents.presences = True
#variabeln
queue = []
#implementation
class MyClient(discord.Client):
#-------------------------------------------------
async def on_message(self, message):
prefix = "~"
if message.author != self.user:
msg = message.content.split()
voicechannel = message.author.voice.channel
voiceclient = message.guild.voice_client
#-------------(voice-commands)--------------------
elif msg[0] == prefix+"join":
if voiceclient and voiceclient.is_connected():
await voiceclient.move_to(voicechannel)
else:
await voicechannel.connect()
elif msg[0] == prefix+"dc":
if voiceclient.is_connected():
await voiceclient.disconnect()
elif msg[0] == prefix+"play":
if voiceclient and voiceclient.is_connected(): # just connecting to the voicechannel and voiceclient
await voiceclient.move_to(voicechannel) #
else: #
await voicechannel.connect() #
url = str(message.content)[len(msg[0])+1:]
dirpath = './downloadsong'
filename = 'song.mp3'
filepath = '{}/{}'.format(dirpath,filename)
if queue == []: # if queue is empty (=not playing a song right now)
bunchi_commands.check_song(filepath) # delete old song
bunchi_commands.download_song(url,filepath) # download new song
voiceclient.play(discord.FFmpegPCMAudio("./downloadsong/song.mp3")) # play song
bunchi_commands.addqueue(queue,url)
print(queue)
elif msg[0] == prefix+"pause":
if voiceclient.is_playing():
voiceclient.pause()
elif msg[0] == prefix+"resume":
if voiceclient.is_paused():
voiceclient.resume()
elif msg[0] == prefix+"stop":
voiceclient.stop()
#---------------------------------------------------
client = MyClient(intents=intents)
client.run('Token')
答案 0 :(得分：0)
我这里有一些工作代码，它有一个功能正常的队列系统，以及 clear 和 remove 命令，可以清除队列或从队列中删除某首歌曲。请记住，这是写成一个齿轮。
import discord
from discord.ext import commands
import random
import asyncio
import itertools
import sys
import traceback
from async_timeout import timeout
from functools import partial
import youtube_dl
from youtube_dl import YoutubeDL
# Suppress noise about console usage from errors
youtube_dl.utils.bug_reports_message = lambda: ''
ytdlopts = {
'format': 'bestaudio/best',
'outtmpl': 'downloads/%(extractor)s-%(id)s-%(title)s.%(ext)s',
'restrictfilenames': True,
'noplaylist': True,
'nocheckcertificate': True,
'ignoreerrors': False,
'logtostderr': False,
'quiet': True,
'no_warnings': True,
'default_search': 'auto',
'source_address': '0.0.0.0' # ipv6 addresses cause issues sometimes
}
ffmpegopts = {
'before_options': '-nostdin',
'options': '-vn'
}
ytdl = YoutubeDL(ytdlopts)
class VoiceConnectionError(commands.CommandError):
"""Custom Exception class for connection errors."""
class InvalidVoiceChannel(VoiceConnectionError):
"""Exception for cases of invalid Voice Channels."""
class YTDLSource(discord.PCMVolumeTransformer):
def __init__(self, source, *, data, requester):
super().__init__(source)
self.requester = requester
self.title = data.get('title')
self.web_url = data.get('webpage_url')
self.duration = data.get('duration')
# YTDL info dicts (data) have other useful information you might want
# https://github.com/rg3/youtube-dl/blob/master/README.md
def __getitem__(self, item: str):
"""Allows us to access attributes similar to a dict.
This is only useful when you are NOT downloading.
"""
return self.__getattribute__(item)
@classmethod
async def create_source(cls, ctx, search: str, *, loop, download=False):
loop = loop or asyncio.get_event_loop()
to_run = partial(ytdl.extract_info, url=search, download=download)
data = await loop.run_in_executor(None, to_run)
if 'entries' in data:
# take first item from a playlist
data = data['entries'][0]
embed = discord.Embed(title="", description=f"Queued [{data['title']}]({data['webpage_url']}) [{ctx.author.mention}]", color=discord.Color.green())
await ctx.send(embed=embed)
if download:
source = ytdl.prepare_filename(data)
else:
return {'webpage_url': data['webpage_url'], 'requester': ctx.author, 'title': data['title']}
return cls(discord.FFmpegPCMAudio(source), data=data, requester=ctx.author)
@classmethod
async def regather_stream(cls, data, *, loop):
"""Used for preparing a stream, instead of downloading.
Since Youtube Streaming links expire."""
loop = loop or asyncio.get_event_loop()
requester = data['requester']
to_run = partial(ytdl.extract_info, url=data['webpage_url'], download=False)
data = await loop.run_in_executor(None, to_run)
return cls(discord.FFmpegPCMAudio(data['url']), data=data, requester=requester)
class MusicPlayer:
"""A class which is assigned to each guild using the bot for Music.
This class implements a queue and loop, which allows for different guilds to listen to different playlists
simultaneously.
When the bot disconnects from the Voice it's instance will be destroyed.
"""
__slots__ = ('bot', '_guild', '_channel', '_cog', 'queue', 'next', 'current', 'np', 'volume')
def __init__(self, ctx):
self.bot = ctx.bot
self._guild = ctx.guild
self._channel = ctx.channel
self._cog = ctx.cog
self.queue = asyncio.Queue()
self.next = asyncio.Event()
self.np = None # Now playing message
self.volume = .5
self.current = None
ctx.bot.loop.create_task(self.player_loop())
async def player_loop(self):
"""Our main player loop."""
await self.bot.wait_until_ready()
while not self.bot.is_closed():
self.next.clear()
try:
# Wait for the next song. If we timeout cancel the player and disconnect...
async with timeout(300): # 5 minutes...
source = await self.queue.get()
except asyncio.TimeoutError:
return self.destroy(self._guild)
if not isinstance(source, YTDLSource):
# Source was probably a stream (not downloaded)
# So we should regather to prevent stream expiration
try:
source = await YTDLSource.regather_stream(source, loop=self.bot.loop)
except Exception as e:
await self._channel.send(f'There was an error processing your song.\n'
f'```css\n[{e}]\n```')
continue
source.volume = self.volume
self.current = source
self._guild.voice_client.play(source, after=lambda _: self.bot.loop.call_soon_threadsafe(self.next.set))
embed = discord.Embed(title="Now playing", description=f"[{source.title}]({source.web_url}) [{source.requester.mention}]", color=discord.Color.green())
self.np = await self._channel.send(embed=embed)
await self.next.wait()
# Make sure the FFmpeg process is cleaned up.
source.cleanup()
self.current = None
def destroy(self, guild):
"""Disconnect and cleanup the player."""
return self.bot.loop.create_task(self._cog.cleanup(guild))
class Music(commands.Cog):
"""Music related commands."""
__slots__ = ('bot', 'players')
def __init__(self, bot):
self.bot = bot
self.players = {}
async def cleanup(self, guild):
try:
await guild.voice_client.disconnect()
except AttributeError:
pass
try:
del self.players[guild.id]
except KeyError:
pass
async def __local_check(self, ctx):
"""A local check which applies to all commands in this cog."""
if not ctx.guild:
raise commands.NoPrivateMessage
return True
async def __error(self, ctx, error):
"""A local error handler for all errors arising from commands in this cog."""
if isinstance(error, commands.NoPrivateMessage):
try:
return await ctx.send('This command can not be used in Private Messages.')
except discord.HTTPException:
pass
elif isinstance(error, InvalidVoiceChannel):
await ctx.send('Error connecting to Voice Channel. '
'Please make sure you are in a valid channel or provide me with one')
print('Ignoring exception in command {}:'.format(ctx.command), file=sys.stderr)
traceback.print_exception(type(error), error, error.__traceback__, file=sys.stderr)
def get_player(self, ctx):
"""Retrieve the guild player, or generate one."""
try:
player = self.players[ctx.guild.id]
except KeyError:
player = MusicPlayer(ctx)
self.players[ctx.guild.id] = player
return player
@commands.command(name='join', aliases=['connect', 'j'], description="connects to voice")
async def connect_(self, ctx, *, channel: discord.VoiceChannel=None):
"""Connect to voice.
Parameters
------------
channel: discord.VoiceChannel [Optional]
The channel to connect to. If a channel is not specified, an attempt to join the voice channel you are in
will be made.
This command also handles moving the bot to different channels.
"""
if not channel:
try:
channel = ctx.author.voice.channel
except AttributeError:
embed = discord.Embed(title="", description="No channel to join. Please call `,join` from a voice channel.", color=discord.Color.green())
await ctx.send(embed=embed)
raise InvalidVoiceChannel('No channel to join. Please either specify a valid channel or join one.')
vc = ctx.voice_client
if vc:
if vc.channel.id == channel.id:
return
try:
await vc.move_to(channel)
except asyncio.TimeoutError:
raise VoiceConnectionError(f'Moving to channel: <{channel}> timed out.')
else:
try:
await channel.connect()
except asyncio.TimeoutError:
raise VoiceConnectionError(f'Connecting to channel: <{channel}> timed out.')
if (random.randint(0, 1) == 0):
await ctx.message.add_reaction('?')
await ctx.send(f'**Joined `{channel}`**')
@commands.command(name='play', aliases=['sing','p'], description="streams music")
async def play_(self, ctx, *, search: str):
"""Request a song and add it to the queue.
This command attempts to join a valid voice channel if the bot is not already in one.
Uses YTDL to automatically search and retrieve a song.
Parameters
------------
search: str [Required]
The song to search and retrieve using YTDL. This could be a simple search, an ID or URL.
"""
await ctx.trigger_typing()
vc = ctx.voice_client
if not vc:
await ctx.invoke(self.connect_)
player = self.get_player(ctx)
# If download is False, source will be a dict which will be used later to regather the stream.
# If download is True, source will be a discord.FFmpegPCMAudio with a VolumeTransformer.
source = await YTDLSource.create_source(ctx, search, loop=self.bot.loop, download=False)
await player.queue.put(source)
@commands.command(name='pause', description="pauses music")
async def pause_(self, ctx):
"""Pause the currently playing song."""
vc = ctx.voice_client
if not vc or not vc.is_playing():
embed = discord.Embed(title="", description="I am currently not playing anything", color=discord.Color.green())
return await ctx.send(embed=embed)
elif vc.is_paused():
return
vc.pause()
await ctx.send("Paused ⏸️")
@commands.command(name='resume', description="resumes music")
async def resume_(self, ctx):
"""Resume the currently paused song."""
vc = ctx.voice_client
if not vc or not vc.is_connected():
embed = discord.Embed(title="", description="I'm not connected to a voice channel", color=discord.Color.green())
return await ctx.send(embed=embed)
elif not vc.is_paused():
return
vc.resume()
await ctx.send("Resuming ⏯️")
@commands.command(name='skip', description="skips to next song in queue")
async def skip_(self, ctx):
"""Skip the song."""
vc = ctx.voice_client
if not vc or not vc.is_connected():
embed = discord.Embed(title="", description="I'm not connected to a voice channel", color=discord.Color.green())
return await ctx.send(embed=embed)
if vc.is_paused():
pass
elif not vc.is_playing():
return
vc.stop()
@commands.command(name='remove', aliases=['rm', 'rem'], description="removes specified song from queue")
async def remove_(self, ctx, pos : int=None):
"""Removes specified song from queue"""
vc = ctx.voice_client
if not vc or not vc.is_connected():
embed = discord.Embed(title="", description="I'm not connected to a voice channel", color=discord.Color.green())
return await ctx.send(embed=embed)
player = self.get_player(ctx)
if pos == None:
player.queue._queue.pop()
else:
try:
s = player.queue._queue[pos-1]
del player.queue._queue[pos-1]
embed = discord.Embed(title="", description=f"Removed [{s['title']}]({s['webpage_url']}) [{s['requester'].mention}]", color=discord.Color.green())
await ctx.send(embed=embed)
except:
embed = discord.Embed(title="", description=f'Could not find a track for "{pos}"', color=discord.Color.green())
await ctx.send(embed=embed)
@commands.command(name='clear', aliases=['clr', 'cl', 'cr'], description="clears entire queue")
async def clear_(self, ctx):
"""Deletes entire queue of upcoming songs."""
vc = ctx.voice_client
if not vc or not vc.is_connected():
embed = discord.Embed(title="", description="I'm not connected to a voice channel", color=discord.Color.green())
return await ctx.send(embed=embed)
player = self.get_player(ctx)
player.queue._queue.clear()
await ctx.send('? **Cleared**')
@commands.command(name='queue', aliases=['q', 'playlist', 'que'], description="shows the queue")
async def queue_info(self, ctx):
"""Retrieve a basic queue of upcoming songs."""
vc = ctx.voice_client
if not vc or not vc.is_connected():
embed = discord.Embed(title="", description="I'm not connected to a voice channel", color=discord.Color.green())
return await ctx.send(embed=embed)
player = self.get_player(ctx)
if player.queue.empty():
embed = discord.Embed(title="", description="queue is empty", color=discord.Color.green())
return await ctx.send(embed=embed)
seconds = vc.source.duration % (24 * 3600)
hour = seconds // 3600
seconds %= 3600
minutes = seconds // 60
seconds %= 60
if hour > 0:
duration = "%dh %02dm %02ds" % (hour, minutes, seconds)
else:
duration = "%02dm %02ds" % (minutes, seconds)
# Grabs the songs in the queue...
upcoming = list(itertools.islice(player.queue._queue, 0, int(len(player.queue._queue))))
fmt = '\n'.join(f"`{(upcoming.index(_)) + 1}.` [{_['title']}]({_['webpage_url']}) | ` {duration} Requested by: {_['requester']}`\n" for _ in upcoming)
fmt = f"\n__Now Playing__:\n[{vc.source.title}]({vc.source.web_url}) | ` {duration} Requested by: {vc.source.requester}`\n\n__Up Next:__\n" + fmt + f"\n**{len(upcoming)} songs in queue**"
embed = discord.Embed(title=f'Queue for {ctx.guild.name}', description=fmt, color=discord.Color.green())
embed.set_footer(text=f"{ctx.author.display_name}", icon_url=ctx.author.avatar_url)
await ctx.send(embed=embed)
@commands.command(name='np', aliases=['song', 'current', 'currentsong', 'playing'], description="shows the current playing song")
async def now_playing_(self, ctx):
"""Display information about the currently playing song."""
vc = ctx.voice_client
if not vc or not vc.is_connected():
embed = discord.Embed(title="", description="I'm not connected to a voice channel", color=discord.Color.green())
return await ctx.send(embed=embed)
player = self.get_player(ctx)
if not player.current:
embed = discord.Embed(title="", description="I am currently not playing anything", color=discord.Color.green())
return await ctx.send(embed=embed)
seconds = vc.source.duration % (24 * 3600)
hour = seconds // 3600
seconds %= 3600
minutes = seconds // 60
seconds %= 60
if hour > 0:
duration = "%dh %02dm %02ds" % (hour, minutes, seconds)
else:
duration = "%02dm %02ds" % (minutes, seconds)
embed = discord.Embed(title="", description=f"[{vc.source.title}]({vc.source.web_url}) [{vc.source.requester.mention}] | `{duration}`", color=discord.Color.green())
embed.set_author(icon_url=self.bot.user.avatar_url, name=f"Now Playing ?")
await ctx.send(embed=embed)
@commands.command(name='volume', aliases=['vol', 'v'], description="changes Kermit's volume")
async def change_volume(self, ctx, *, vol: float=None):
"""Change the player volume.
Parameters
------------
volume: float or int [Required]
The volume to set the player to in percentage. This must be between 1 and 100.
"""
vc = ctx.voice_client
if not vc or not vc.is_connected():
embed = discord.Embed(title="", description="I am not currently connected to voice", color=discord.Color.green())
return await ctx.send(embed=embed)
if not vol:
embed = discord.Embed(title="", description=f"? **{(vc.source.volume)*100}%**", color=discord.Color.green())
return await ctx.send(embed=embed)
if not 0 < vol < 101:
embed = discord.Embed(title="", description="Please enter a value between 1 and 100", color=discord.Color.green())
return await ctx.send(embed=embed)
player = self.get_player(ctx)
if vc.source:
vc.source.volume = vol / 100
player.volume = vol / 100
embed = discord.Embed(title="", description=f'**`{ctx.author}`** set the volume to **{vol}%**', color=discord.Color.green())
await ctx.send(embed=embed)
@commands.command(name='leave', aliases=["stop", "dc", "disconnect", "bye"], description="stops music and disconnects from voice")
async def leave_(self, ctx):
"""Stop the currently playing song and destroy the player.
!Warning!
This will destroy the player assigned to your guild, also deleting any queued songs and settings.
"""
vc = ctx.voice_client
if not vc or not vc.is_connected():
embed = discord.Embed(title="", description="I'm not connected to a voice channel", color=discord.Color.green())
return await ctx.send(embed=embed)
if (random.randint(0, 1) == 0):
await ctx.message.add_reaction('?')
await ctx.send('**Successfully disconnected**')
await self.cleanup(ctx.guild)
def setup(bot):
bot.add_cog(Music(bot))