当特定用户玩特定游戏时，如何让我的不和谐机器人发送消息？

Question

I want to add a code to my bot where it will send a message when a specific user plays a specific game (ie Left 4 Dead 2). How do I do that? I don't want any commands anymore.

// Game Art Sender //
if (message.channel.id === '573671522116304901') {
  if (msg.includes('!L4D2')) { // THIS is what I want to change.
    message.channel.send('***[MATURE CONTENT]*** **Joining Game:**', {
      files: [
        "https://cdn.discordapp.com/attachments/573671522116304901/573676850920947733/SPOILER_l4d2.png"
      ]
    });
  }
});

Answer 1

Try this

if(GuildMember.username === 'Specific_Username_here')
    if(GuildMember.presence.game === 'Specific_Game_here')
        // do whatever here

GuildMember.id could also be used if you know that user's specific id string. I haven't tested this myself and I'd have rather posted this as a comment, but I don't have that permission yet.

Answer 2

To send a message to a specific channel, use this:

const channel = message.guild.channels.find(ch => ch.name === 'CHANNEL_NAME_GOES_HERE')
channel.send("MESSAGE GOES HERE")

or

const channel = message.guild.channels.find(ch => ch.name === 'CHANNEL_NAME_GOES_HERE')
channel.send(VARIABLE_GOES_HERE)

Summing it up, your code should be something like this:

if(GuildMember.username === 'Specific_Username_here')
    if(GuildMember.presence.game === 'Specific_Game_here') {
        const channel = message.guild.channels.find(ch => ch.name === 'CHANNEL_NAME_GOES_HERE)
        channel.send("MESSAGE GOES HERE")
}

Answer 3

So I just figured it out. It was a long journey to figuring this one out. Here's the code:

// Game Detector \\
client.on("presenceUpdate", (oldMember, newMember) => {
if(newMember.id === '406742915352756235') {
    if(newMember.presence.game.name === 'ROBLOX') { // New Example: ROBLOX
        console.log('ROBLOX detected!');
        client.channels.get('573671522116304901').send('**Joining Game:**', {
            files: [
                "https://cdn.discordapp.com/attachments/567519197052272692/579177282283896842/rblx1.png"
                ]
            });
        }
    }
});

However, I need one more problem solved: It says "null" when I close the application.

How do I fix this?