A sonic engine written in pure rust.
Reverse engineered Sonic, but building a new, entirely open, moddable engine instead of RSDK.
- Pure rust Sonic implementation with fewest dependencies possible
- Simpler modding / level editing through postprocessing assets
- 8 bit alpha compositing (vs 1-bit on rsdk)
- Run anywhere cargo builds (baseline software pixel framebuffer engine)
- Emphasis on open formats, clear code, extensibility, and modding
- Fastest, lowest resource open Sonic implementation ever
You'll need a retail sonic to extract the assets.
- Learn how sonic was built and perhaps improve upon and extend its design.
- A starting point for sonic modders or someone wanting to create a retro style game.
- Research adapting older game architecture to rust.
- RSDKv3
- RSDKv4 archives
- Unpacking
- Decryption
- Processing of assets (.bin -> .json)
- GlobalConfig.bin
- StageConfig.bin
- Act.bin
- RSDKv5
- Basic game engine
- Software Renderer (minifb)
- Hardware Renderer (pixel)
- Audio
- Sonic 1
- Sonic 2
- Sonic CD
Tested with following Data.rsdk files (md5 sum):
MD5 Size Origin
2881d2492be3ba5d3b6106cdbf82c3e5 38198396 Sonic the Hedgehog Classic apk v3.7.0
Here's some arweave txids:
Release Arweave TXID
Sonic 1 nwwbTljMYHScY6fgbQkuNdH5127wAidBYrCH9w8dpAk
cargo run --package rsdk-extract -- <file>Because for some reason Sonic reversers publish weird windows code and I don't really want to touch it with a 10 foot clownpole.
cargo run