discord.js 你如何做一个反应收集器

Question

我正在努力做到这一点，所以当你得到一定数量的反应时，我的机器人会发送一条消息，如果有人可以帮助这里是我的代码

.then(function(sentMessage) {
            sentMessage.react('????').catch(() => console.error('emoji failed to react.')).message.reactions.cache.get('????').count;
            const filter = (reaction, user) => {
    return reaction.emoji.name === '????' && user.id === message.author.id;
};

message.awaitReactions(filter, { max: 2, time: 00, errors: ['time'] })
    .then(collected => console.log(collected.size))
    .catch(collected => {
        console.log(`After a minute, only ${collected.size} out of 4 reacted.`);
    });
        });
})

Answer 1

除了awaitReactions，您还可以使用createReactionCollector，这可能更易于使用，并且它的collector.on() 侦听器比awaitReactions 的then() 和catch() 方法更具可读性。

您无需使用message.reactions.cache.get('?').count 来检查反应数量，因为当您达到最大值时会触发end 事件，您可以在其中发送消息。

此外，在您的filter 中，您无需检查是否为user.id === message.author.id，因为您希望接受其他用户的反应。但是，您可以检查是否!user.bot 以确保您不会计算机器人的反应。如果您不想限制机器人收集反应的时间，也可以删除 time 选项。

另一个错误是您在message 本身而不是sentMessage 上调用了.awaitReactions()。

查看下面的工作代码：

// v12
client.on('message', async (message) => {
  if (message.author.bot || !message.content.startsWith(prefix)) return;

  const args = message.content.slice(prefix.length).split(/ +/);
  const command = args.shift().toLowerCase();
  const MAX_REACTIONS = 2;

  if (command === 'react') {
    try {
      // send a message and wait for it to be sent
      const sentMessage = await message.channel.send('React to this!');

      // react to the sent message
      await sentMessage.react('?');

      // set up a filter to only collect reactions with the ? emoji
      // and don't count the bot's reaction
      const filter = (reaction, user) => reaction.emoji.name === '?' && !user.bot;

      // set up the collecrtor with the MAX_REACTIONS
      const collector = sentMessage.createReactionCollector(filter, {
        max: MAX_REACTIONS,
      });

      collector.on('collect', (reaction) => {
        // in case you want to do something when someone reacts with ?
        console.log(`Collected a new ${reaction.emoji.name} reaction`);
      });

      // fires when the time limit or the max is reached
      collector.on('end', (collected, reason) => {
        // reactions are no longer collected
        // if the ? emoji is clicked the MAX_REACTIONS times
        if (reason === 'limit')
          return message.channel.send(`We've just reached the maximum of ${MAX_REACTIONS} reactions.`);
      });
    } catch (error) {
      // "handle" errors
      console.log(error);
    }
  }
});

如果您使用的是 discord.js v13，有几个变化：

• 您需要添加 GUILD_MESSAGE_REACTIONS 意图
• message 事件现在是 messageCreate
• 收集器的filter 在options 对象内

// v13
const { Client, Intents } = require('discord.js');

const client = new Client({
  intents: [
    Intents.FLAGS.GUILDS,
    Intents.FLAGS.GUILD_MESSAGES,
    Intents.FLAGS.GUILD_MESSAGE_REACTIONS,
  ],
});
const prefix = '!';

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

  const args = message.content.slice(prefix.length).split(/ +/);
  const command = args.shift().toLowerCase();
  const MAX_REACTIONS = 2;

  if (command === 'react') {
    try {
      // send a message and wait for it to be sent
      const sentMessage = await message.channel.send('React to this!');

      // react to the sent message
      await sentMessage.react('?');

      // set up a filter to only collect reactions with the ? emoji
      // and don't count the bot's reaction
      const filter = (reaction, user) => reaction.emoji.name === '?' && !user.bot;

      // set up the collecrtor with the MAX_REACTIONS
      const collector = sentMessage.createReactionCollector({
        filter,
        max: MAX_REACTIONS,
      });

      collector.on('collect', (reaction) => {
        // in case you want to do something when someone reacts with ?
        console.log(`Collected a new ${reaction.emoji.name} reaction`);
      });

      // fires when the time limit or the max is reached
      collector.on('end', (collected, reason) => {
        // reactions are no longer collected
        // if the ? emoji is clicked the MAX_REACTIONS times
        if (reason === 'limit')
          return message.channel.send(`We've just reached the maximum of ${MAX_REACTIONS} reactions.`);
      });
    } catch (error) {
      // "handle" errors
      console.log(error);
    }
  }
});

结果：

Answer 2

您想使用if 语句检查collected.size，如下所示：

let amount = 4; // any integer
if (collected.size /* returns an integer */ === amount) {
console.log(`Got ${amount} reactions`)
}

希望我的问题是正确的。

Answer 3

如果我理解正确，那么您可以更改awaitMessage 方法的参数。您可以删除 time: 00, errors: ['time'] 参数，因为它们是可选的，并保留 max: 2。这样，函数只会在有 2 反应（在这种情况下）时完成。

我建议从过滤器中删除 user.id === message.author.id;，因为您似乎希望多个用户对消息做出反应。

更多信息，您可以查看discord.js guide或documentation for awaitReactions。

代码：

message.channel.send("Message reacting to.").then(function (sentMessage) {
    sentMessage.react('?').catch(() => console.error('emoji failed to react.'));
    const filter = (reaction, user) => {
        return reaction.emoji.name === '?';
    };
    message.awaitReactions(filter, { max: 2 })
        .then(collected => console.log(collected.size))
});