3dmc - Convert a 3D model file into your Minecraft world!

A fun project I created in less than a day. I hope you enjoy it!

Demo

In Blender:

In game:

Watch a demo in github/demo.mp4

Notes

• Only works in version 1.21.

Warning

The conversion is multi-threaded but not well optimized. It will take all your CPU power and a LOT of RAM. A model that's too big could use up all your RAM.

Configuration

The following options are available in the config.json:

• scale: Scale the Minecraft build.
  • Important: a scale that's too high could use up all your RAM and crash your PC.
  • Try something like 0.1 and see how many blocks it generates.
• rotation: The rotation to apply to the 3D model.
• datapacksFolderPath: The directory of your world datapacks (should be C:/Users/YOU/AppData/Roaming/.minecraft/saves/YOUR_WORLD/datapacks)

How to run

• Put your .stl file in the top-level directory as "input.stl"
• npm i - download dependencies
• npm run build - build the project
• npm run start - run the compiled code
• If you did not set datapacksFolderPath, manually place the 3dmc folder into your datapacks folder.
• Use /reload in your world to reload the datapack.
• Use /function 3dmc:start and stop moving. The model will be built chunk by chunk at your position.