addChattPattern.js

import * as mineflayer from "mineflayer";

const username = process.env.BOT_USERNAME || 'SAMPLE[bot]';
const host = "127.0.0.1";
const port = process.env.MINECRAFT_SERVER_PORT || 25565; // /publish true adventure 25565

console.log(`chicken bot ${host}:${port}`)
const bot = mineflayer.createBot({host, port, username});
// Log errors and kick reasons:
bot.on('kicked', console.log)
bot.on('error', console.log)
bot.on("death", console.log)
bot.on('spawn', () => {
    const simpleRegex = "simpleRegex";
    bot.addChatPattern(simpleRegex, /coucou/, {})
    bot.on(`chat:${simpleRegex}`, (arg0,arg1,arg2,arg3,arg4,arg5,arg6) => {
        console.log(JSON.stringify({arg0,arg1,arg2,arg3,arg4,arg5,arg6}));
        // [t] coucou toi
        // example : {"arg0":["<boly38> coucou toi"]}
        const botUsername = bot.username;
        if (arg0[0].includes(botUsername)) {
            console.warn(`chat:${simpleRegex}: OH WAIT : dont trigger pattern on my own tchat`);
        } else {
            bot.chat(`${simpleRegex}oh You say coucou`)// including pattern "coucou" here would cause infinite loop when trigger my own tchat is allowed
        }
    });

    const withOneGroupRegex = "withOneGroupRegex";
    bot.addChatPattern(withOneGroupRegex, /salut ([a-zA-Z]*)$/, {})
    bot.on(`chat:${withOneGroupRegex}`, (arg0,arg1,arg2,arg3,arg4,arg5,arg6) => {
        console.log(JSON.stringify({arg0,arg1,arg2,arg3,arg4,arg5,arg6}));
        // [t] salut toi
        // example : {"arg0":["<boly38> salut toi"]}
        const botUsername = bot.username;
        if (arg0[0].includes(botUsername)) {
            console.warn(`chat:${withOneGroupRegex}: OH WAIT : dont trigger pattern on my own tchat`);
        } else {
            bot.chat(`${withOneGroupRegex} oh You say >salut xxx`)// including pattern
        }
    });

    const withGroupRegexParseTrue = "withGroupRegexParseTrue";
    bot.addChatPattern(withGroupRegexParseTrue, /bonjour ([a-zA-Z]*)$/, {"parse": true})
    bot.on(`chat:${withGroupRegexParseTrue}`, (arg0,arg1,arg2,arg3,arg4,arg5,arg6) => {
        console.log(JSON.stringify({arg0,arg1,arg2,arg3,arg4,arg5,arg6}));
        // [t] bonjour toi
        // example :{"arg0":[["toi"]]}
    });
})
/**

 $ node tests/manual/addChatPattern.js
 chicken bot 127.0.0.1:25565
 {"arg0":["<boly38> coucou toi"]}
 {"arg0":["<SAMPLE[bot]> simpleRegexoh You say coucou"]}
 chat:simpleRegex: OH WAIT : dont trigger pattern on my own tchat
 {"arg0":["<boly38> salut toi"]}
 {"arg0":["<SAMPLE[bot]> withOneGroupRegex oh You say >salut xxx"]}
 chat:withOneGroupRegex: OH WAIT : dont trigger pattern on my own tchat
 {"arg0":[["toi"]]}

 */