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Eaglercraft 1.21.4 – Web Workspace

🚧 Warning: Work in Progress
This is an experimental workspace aiming to port Minecraft 1.21.4 to EaglercraftJS/WASM-GC, enabling it to run directly in modern web browsers.

There will only be updates to this repo at least once a week because I do my stuff mostly locally. If you want to see the current stauts look at my webape: Eaglercraft Client Collection

⚠️ This version is not playable yet. Only the base source code is available.
❌ Forge mod support is not planned due to deep engine changes.

🔍 About

Eaglercraft is a client-side reimplementation of Minecraft that runs entirely in the browser using JavaScript and WebAssembly.
This repository is a work-in-progress port of Minecraft 1.21.4, targeting WASM-GC and modern browser runtimes.

Because of significant changes in the Minecraft internals (e.g. class names, directory structures, rendering internals), this version is much more complex than previous Eaglercraft ports.

🎯 Project Goals

  • ✅ Compile and run Minecraft 1.21.4 in the browser (JS/WASM-GC)
  • ⚙️ Provide a clean, open development workspace
  • ❌ No Forge/mod support planned
  • 🔧 Modern WebAssembly toolchain and Gradle-based build system
  • 📢 Community contributions welcome via GitHub

🔧 Build Instructions (early dev phase)

Requirements:

  • Java 21 (e.g. from Adoptium)
  • Node.js (for bundling)
  • Git + Gradle (Gradle wrapper included)

Steps:

git clone https://github.com/mil1dude/eaglercraft-1.21.4.git
cd eaglercraft-1.21.4
./CompileJS

The final web build (WASM + JS + HTML) will appear in the build/ directory.

Build scripts are not final – changes expected frequently.

🌐 Live Versions

Looking to play right now?
Fully working Eaglercraft versions are available here:

The 1.21.4 version is currently only available as source code and not yet playable.

🤝 Contributing

This project is open for contributions.
If you'd like to help port, fix, test, or improve any part of the codebase:

  1. Fork the repository
  2. Create a feature or fix branch
  3. Submit a pull request

Please open an issue beforehand for large features or structural changes.

📄 License & Disclaimer

This project includes modified decompiled code from Minecraft by Mojang Studios, which is © Mojang and Microsoft.
It is published for educational and preservation purposes only.

Do not use this code for commercial purposes or to distribute official Minecraft assets.

🧑‍💻 Maintainer

mil1dude
🔗 Website: https://eaglercraft.42web.io
📧 GitHub: github.com/mil1dude

Stay tuned – the project is progressing slowly but steadily.