Bot not taking knockback on online servers

[1tzkaos]

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

Versions

• mineflayer: 3.7.0
• server: spigot?? maybe?? 1.8.9
• node: 14.15.0

Detailed description of a problem

I am building a robot that can fight (not with the PVP plugin though as I need to configure it). One of the problems I have been facing is the bot does not take knockback on servers. I have checked the ping of the bot and it was around 30-60, so it isn't a connection-related problem.

What did you try yet?

• [x] Did you try any method from the API?
• [x] Did you try any examples? Any error from those?

Your current code

just join any server such as hypixel or mineplex or something and it wont take any knockback in pvp

Expected behavior

I expect the bot to take normal knockback. I originally tested the bot on a lan server and the bot showed normal behaviors such as knockback.

Additional context

I hope you have a great day or night :)

[1tzkaos]

const Discord = require('discord.js');
const mineflayer = require('mineflayer')
const pathfinder = require('mineflayer-pathfinder').pathfinder
const Movements = require('mineflayer-pathfinder').Movements
const { GoalNear } = require('mineflayer-pathfinder').goals
const armorManager = require('mineflayer-armor-manager')
const vec3 = require('vec3')

module.exports = {
    name: "duel",
    //aliases: ["h"],
    description: "Commands for the bot",
    execute(message, args) {
        const bot = mineflayer.createBot({
            host: 'hypixel.net', // minecraft server ip
            username: 'USERNAME', // minecraft username
            password: 'PASSWORD', // minecraft password, comment out if you want to log into online-mode=false servers
            port: args[1], // only set if you need a port that isn't 25565
            version: '1.8.9', // only set if you need a specific version or snapshot (ie: "1.8.9" or "1.16.5"), otherwise it's set automatically
            // auth: 'mojang'              // only set if you need microsoft auth, then set this to 'microsoft'
        })
        if (args[0] === "start") {
            bot.on('spawn', (username) => {
                message.channel.send("The bot has joined the server!")
                console.log('Joined Server (on login)')
                bot.chat("/duel PLAYERUSERNAME Sumo")
            })
        }
    }

}

I censored out the names of players as well as username and passwords, but this basic thing going into a duel, but won't take any knockback. I have also tested if the bot can move and the bot CAN move such as bot.setControlState('forward', true).

[u9g]

please put your code in codeblocks like so:

```js code() ```

to get:

code()

[1tzkaos]

There we go is that better

[1tzkaos]

const Discord = require('discord.js');
const mineflayer = require('mineflayer')
const pathfinder = require('mineflayer-pathfinder').pathfinder
const Movements = require('mineflayer-pathfinder').Movements
const { GoalNear } = require('mineflayer-pathfinder').goals
const armorManager = require('mineflayer-armor-manager')
const vec3 = require('vec3')

module.exports = {
    name: "duel",
    //aliases: ["h"],
    description: "Commands for the bot",
    execute(message, args) {
        const bot = mineflayer.createBot({
            host: 'hypixel.net', // minecraft server ip
            username: 'USERNAME', // minecraft username
            password: 'PASSWORD', // minecraft password, comment out if you want to log into online-mode=false servers
            port: args[1], // only set if you need a port that isn't 25565
            version: '1.8.9', // only set if you need a specific version or snapshot (ie: "1.8.9" or "1.16.5"), otherwise it's set automatically
            // auth: 'mojang'              // only set if you need microsoft auth, then set this to 'microsoft'
        })
        if (args[0] === "start") {
            bot.on('spawn', (username) => {
                message.channel.send("The bot has joined the server!")
                console.log('Joined Server (on login)')
                bot.chat("/duel PLAYERUSERNAME Sumo")
            })
        }
    }

}

[u9g]

At a certain mc version, kb is calculated server side, but on 1.8.9, it’s calculated client side, but not implemented in prismarine-physics yet, feel free to contribute it, but that’s why it doesn’t work now.

[1tzkaos]

should I change to a different mc version? Which mc version would cause kb to be calculated server-side?

[1tzkaos]

also is there a discord or something like that for mineflayer?

[u9g]

also is there a discord or something like that for mineflayer?

Yep, https://discord.gg/tWaPBNtkaq

[u9g]

should I change to a different mc version? Which mc version would cause kb to be calculated server-side?

I have no idea, you can either google around or try versions until it works, but I believe hypixel only supports 1.8.9 and 1.16.5, so you can try 1.16.5