In-game Console

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In-game Console

By dumnotdumOwner

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A console that allows ingame script execution.

Mod Loaders
Minecraft
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About

Description

What it does

Open a live console overlay while you play. Type commands, run JavaScript, save multi-line scripts to files, and bind actions to keys. Everything runs on the client tick thread, so it stays stable while the game keeps running behind it.

Scripting

Three ways to run code:

Prefix What it runs
(none) Console commands
> JavaScript (GraalJS) — live game access
>> Real Java via JShell (dev/JDK only)
Scripts get mc, player, world, lc (feature toggles), and fx — a helper API for particles, movement, HUD text, and more that works on a normal install.
Run code every tick with tick <code>, or save proper multi-line scripts as files:
script new myscript → create & open in your editor script run myscript → run once script tick myscript → run every tick

Scripts live in config/live-console/scripts/.

Aliases

Set a shortcut for a visual effect:

alias ring > (function(){for(var i=0;i<16;i++){var a=i/16*6.283;fx.particle('flame',fx.px()+Math.cos(a)*2,fx.py()+0.5,fx.pz()+Math.sin(a)*2);}})()

Now when you type ring in the console, it spawns a flame ring. Remove it with unalias ring. Bind it to a key: bind r ring

Press R in-game and you get a ring of fire around your feet.

Interactions with the chat enviroment

var lines = [
    "3",
    "2",
    "1",
    "GO!"
];

for (var i = 0; i < lines.length; i++) {
    // one message per run — run 4 times manually, or use tick with a timer
    fx.say(lines[i].replace(/&/g, "&"));
}

fx.say(">>> GO! <<<");

To run it: script new chat Copy paste the content provided above into the new file Save script run chat

Console features

  • Tab completion and command history
  • Scrollback with mouse wheel / Page Up & Down
  • Ctrl+C copies the full log; click a line to copy just that line
  • In-game docs command for the full guide
  • Logo and header in the console UI

Requirements

  • Minecraft 1.21.1+
  • Fabric Loader + Fabric API
  • Java 21+