JSM is a mod loader for rd-132211

JSM allows you to write mods for the first version of Minecraft in JavaScript (not Java!)

JSM adds APIs for player and level mutation, registering custom blocks, HUD rendering, keybinds, and event hooks. Just drop the .js into the mods/ folder!

Look how easy it is to make a mod!

var $ = {
    getModDetails: () => ({
        name: "My First Mod",
        description: "I made this!",
        authors: ["numenmc"]
    }),
    getModNamespace: () => "mymod",

    start: () => {
        Game.registerBlock({
            texture: ...,
            name: "My Custom Block",
            identifier: "custom_block"
        });
    }
}

Here, we've made a custom block called "My Custom Block."

• The whole mod goes in the $ variable.
• We can include information about the mod by returning a ModDetails which the mod loader can interpret.
• We can define a block by giving it properties then using Game.registerBlock to add it to the game.

Install JSM

1.	Make sure you have Prism Launcher or MultiMC installed.
2.	Download the .zip file by clicking the "Download latest" button above.
3.	Create a new instance in Prism or MultiMC and set the version to rd-132211
4.	Edit the instance and click the "Version" tab. Then click "Add to Minecraft.jar" and select the .zip you just downloaded.
5.	If the instance fails to launch go to the "Settings" tab and turn on "Skip Java compatability tests."
6.	You can now place mod .js files into the mods/ folder

Core mods

These mods are written by me, they provide useful features you would otherwise have to write yourself.

Develop JSM mods

• API Documentation is available here and is generated by TSDoc.
• If your editor supports IntelliSense from .d.ts files, you can download the typings here. Just include this at the top of your file:

  // @ts-check
  /// <reference path="/path/to/jsm_api.d.ts" />

• You can download a template mod here.

PixelArray generator

Your output will appear here...