The bot ignores blocks if y < 0

[Erdef119]

• The FAQ doesn't contain a resolution to my issue

Versions

• mineflayer: 4.33.0
• server: Leaf 1.21.8 behind Velocity
• node: 24.11.0

Detailed description of a problem

bot.blockAt(bot.entity.position.offset(0, -1, 0)).displayName returns 'Air' if bot's y position is below 0

What did you try yet?

Did you try any method from the API? only bot.blockAt
Did you try any example? no

Your current code

const mineflayer = require('mineflayer');

const readline = require('readline');

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

rl.on('line', (line) => {
    const msg = (line || '').trim();
    if (!msg) return;
    if (!bot || typeof bot.chat !== 'function') {
        console.log('Not ready');
        return;
    }
    if (msg === '!quit' || msg === '!exit') {
        try { bot.quit(); } catch(e) {}
        rl.close();
        process.exit(0);
    }
    if (msg === '!jump') {
        bot.setControlState('jump', true);
        bot.setControlState('jump', false);
        return;
    }
    if (msg === '!blockunder') {
      console.log(bot.blockAt(bot.entity.position.offset(0, -1, 0)).displayName);
      return;
    }
    if (msg === '!whereami') {
      console.log(bot.entity.position);
      console.log(bot.entity.world);
      return;
    }
    try {
        bot.chat(msg);
    } catch (err) {
        console.error(err);
    }
});

const bot = mineflayer.createBot({
  host: '...',
  port: 25565,
  version: '1.19.3',
  username: '...',
  auth: 'offline'
});


bot.on('message', (message) => {
  console.log(message.toAnsi());
  if (message.toString().toLowerCase().includes('login using /login')) {
    bot.chat('/login ...');
  }
});

Expected behavior

bot.blockAt should work to y -64

Additional context

I can suggest a fix, that got it to work:

in mineflayer\lib\plugins\game.js
bot.game.minY = 0
bot.game.height = 256
to
bot.game.minY = -64
bot.game.height = 320

[Erdef119]

made a PR #3773