Programming Minecraft with WebSockets in Python

Minecraft lets you connect to a WebSocket server when you’re in a game. The server can receive and send any commands. This lets you build a bot that you can do almost anything.

This tutorial explains how to create a Python WebSocket server that Minecraft can connect to, send messages using the undocumented MCWSS protocol.

0:00 - We'll show how you can use Python to automate Minecraft
0:27 - You need Minecraft, Python, and an editor
0:56 - Import WebSockets
1:22 - Create a WebSocket server
2:40 - Connect to the WebSocket server
4:36 - Troubleshooting
6:17 - Listen to player messages
9:12 - Print player messages
10:18 - Structure of a player message response
11:14 - Listen for a "pyramid" message
14:06 - Structure of commands to set blocks
14:42 - Sending commands to set blocks
16:43 - Algorithm to draw a pyramid
20:05 - Need for queueing messages
21:24 - Create a queue for messages
24:12 - Conclusion & uses

[towu]

Great video, it's been ages since I've seen a good video talking about web sockets with Minecraft, I really like how you used the websockets library compared to stdlib's socket, and your code was asynchronous too, pretty cool. Audio and video were great quality, and it was easy to follow along. Good job :)

[ocaly]

great to see someone make a professional tutorial for such an unknown thing

[towu]

To reduce the amount of entries in the queue, you can use /fill abc xyz block to do what you're doing, but this would create a structure that's not hollow, in contrast to how it is currently. To amend that, you could use two fill commands per layer, the second one with a narrower range to make it hollow, which would still be more efficient than blasting out setblock messages

[towu]

I don't think you need ~0 at 14:20, an integer after a special character leads to Minecraft first substituting the character for your coordinates, and then parsing the integer, so if your current position is 12 13 14, ~-1 ~2 ~3, turning into ~-1 ~+2 ~+3, then 12-1 13+2 14+3, you get your final coordinates of 11 15 17, so 0 is redundant, doesn't make much of a difference though

[devloper_hs]

Sir why we didn't created any environment for project?

[s_smerch]

Hello, is it possible to react to command execution in a command block? For example, it would be nice when a player receives a tag.

[nicki]

Everyone who can't connect to websocket via Minecraft: You need to enable loopback to communicate with localhost in windows apps:

CheckNetIsolation LoopbackExempt -a (Powershell with Admin rights)

[alexroper]

how can i get wss to work with my bedrock server