Ratatouille (Jan 18, 2006 prototype)  
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=============

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A work-in-progress decompilation of [Ratatouille (Jan 18, 2006 prototype)](https://hiddenpalace.org/Disney-Pixar_Ratatouille_(Jan_18,_2006_prototype)).

This repository does **not** contain any game assets or assembly whatsoever. An existing copy of the game is required.

Full disclosure: code matched before October 21, 2026 was decompiled by hand. Since then, the project has been
AI-assisted: new code is decompiled with the help of an LLM, then reviewed and checked against the original binaries.
Matching code is byte-identical to the original, but names, types and source structure beyond what the binaries
and their debug info prove may be guesses.

Supported versions:

- `DEBUG` - ratsgc_d.elf
- `RELEASE` - ratsgc_r.elf
- `MASTERDEBUG` - ratsgc_md.elf
- `MASTER` - ratsgc_m.elf

Dependencies
============

Windows
--------

On Windows, it's **highly recommended** to use native tooling. WSL or msys2 are **not** required.  
When running under WSL, [objdiff](#diffing) is unable to get filesystem notifications for automatic rebuilds.

- Install [Python](https://www.python.org/downloads/) and add it to `%PATH%`.
  - Also available from the [Windows Store](https://apps.microsoft.com/store/detail/python-311/9NRWMJP3717K).
- Download [ninja](https://github.com/ninja-build/ninja/releases) and add it to `%PATH%`.
  - Quick install via pip: `pip install ninja`

macOS
------

- Install [ninja](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages):

  ```sh
  brew install ninja
  ```

- Install [wine-crossover](https://github.com/Gcenx/homebrew-wine):

  ```sh
  brew install --cask --no-quarantine gcenx/wine/wine-crossover
  ```

After OS upgrades, if macOS complains about `Wine Crossover.app` being unverified, you can unquarantine it using:

```sh
sudo xattr -rd com.apple.quarantine '/Applications/Wine Crossover.app'
```

Linux
------

- Install [ninja](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages).
- For non-x86(_64) platforms: Install wine from your package manager.
  - For x86(_64), [wibo](https://github.com/decompals/wibo), a minimal 32-bit Windows binary wrapper, will be automatically downloaded and used.

Building
========

- Clone the repository:

  ```sh
  git clone https://github.com/seilweiss/rat.git
  ```

- Using [Dolphin Emulator](https://dolphin-emu.org/), extract your game to `orig/RELSAB`.
![](assets/dolphin-extract.png)
  - To save space, the only necessary files are the following. Any others can be deleted.
    - `files/ratsgc_d.elf`
    - `files/ratsgc_m.elf`
    - `files/ratsgc_md.elf`
    - `files/ratsgc_r.elf`
- Configure:

  ```sh
  python configure.py -v VERSION
  ```
  Replace `VERSION` with `DEBUG`, `RELEASE`, `MASTERDEBUG`, or `MASTER`.

- Build:

  ```sh
  ninja
  ```

Visual Studio Code
==================

If desired, use the recommended Visual Studio Code settings by renaming the `.vscode.example` directory to `.vscode`.

Diffing
=======

Once the initial build succeeds, an `objdiff.json` should exist in the project root.

Download the latest release from [encounter/objdiff](https://github.com/encounter/objdiff). Under project settings, set `Project directory`. The configuration should be loaded automatically.

Select an object from the left sidebar to begin diffing. Changes to the project will rebuild automatically: changes to source files, headers, `configure.py`, `splits.txt` or `symbols.txt`.

![](assets/objdiff.png)