Note: Most of this article was written by AI.
Introduction
For the purpose of learning Minecraft Mod development, I created a Mod that generates a castle with a single command.
Development Environment
The technology stack used:
- Minecraft: 1.21
- Modding Framework: Fabric Mod
- Java: 21
- Development Environment: Cursor (AI-integrated editor)
- AI Assistance: Claude 4 Sonnet
Environment Setup
Java 21 installation was needed, so I installed it with Homebrew:
Project initialization was done by cloning Fabric’s official template:
Then, I launched the development environment with Cursor:
Castle Design
I asked claude-4-sonnet with the following instructions:
I want to add a command to create a Western-style castle
- Thick stone walls
- Towers
- Castle walls
- Drawbridge and gate
- Small windows
- Battlements (crenellations on castle walls)
- More rectangular structure
Implementation
Creating a Blueprint with Arrays
Rather than manually placing blocks, I created a blueprint using arrays:
Placing Blocks
Actual blocks are placed according to the numbers:
Usage
- Install the Mod
- Execute the
/western-castlecommand in-game
- A castle is generated at the player’s position
When I launched Minecraft in the development environment and executed the command…
The castle was successfully generated!
Summary
By combining with AI tools, I was able to easily verify the implementation.
Building on this experience, I would like to try creating other structures and Mods with more advanced features in the future!