Old World Launcher

Desktop launcher for Old World Addon, a S.T.A.L.K.E.R. Anomaly gameplay and atmosphere overhaul. Built with Tauri 2 (Rust backend) and Blazor WebAssembly (.NET 10 frontend).

The launcher provides a native UI for configuring game settings before first launch — particularly video, sound, and control options that map to user.ltx console commands. After the game has been launched once, the in-game options menu takes over for fine-tuning.

What it covers

Page	Scope
Main	Launch configuration (AVX toggle, debug mode), game launch, shader cache clearing, user.ltx reset
Video	Basic settings (FOV, screen mode, HDR, lighting style) + advanced rendering (SSAO, grass, shadows — settings that trigger shader recompilation)
Sound	Volumes, EAX, dynamic music, captions
Controls	Mouse sensitivity, toggle options, pickup/PDA modes

Only options backed by a cmd= console command are included. HUD tuning, SSFX detail, night settings, and other in-game-only options are intentionally excluded.

Tech stack

• Backend: Rust via Tauri 2 (xray-oldworld-launcher/src-tauri/)
• Frontend: Blazor WebAssembly on .NET 10.0 (xray-oldworld-launcher/src/)
• UI library: MudBlazor
• IPC bridge: SyminStudio.TauriApi + __TAURI__.core.invoke

Prerequisites

• Node.js (LTS) with npm
• Rust stable toolchain
• .NET 10.0 SDK
• Linux only: system libraries for Tauri's WebKit2GTK backend:

  sudo apt install libwebkit2gtk-4.1-dev libayatana-appindicator3-dev librsvg2-dev
  

Development

All commands run from xray-oldworld-launcher/:

# Install Tauri CLI
npm install

# Start dev mode (Blazor hot-reload + Tauri window)
npm run dev

# Or with game path overrides for local testing:
npm run dev:env

dev:env runs dev.sh, which sets OWL_GAME_ROOT environment variable so the Rust backend can locate game files without a full game installation. Edit dev.sh to point at your local paths.

Production build

npm run build

This runs dotnet publish (Blazor WASM assets) then tauri build (Rust compilation + bundling). The output binary embeds all frontend assets — no external files needed.

CI

GitHub Actions builds on every push that touches xray-oldworld-launcher/:

Runner	Output
windows-latest	Standalone .exe
ubuntu-22.04	.AppImage (self-contained, no system deps required)

Artifacts are downloadable from the Actions tab. Output filenames are configured at the top of .github/workflows/build.yml.

Project structure

Old World Launcher/
├── .github/workflows/
│   ├── build.yml              # CI build (Windows + Linux)
│   └── discord-notify.yml     # Commit notifications
├── xray-oldworld-launcher/
│   ├── src/                   # Blazor WebAssembly frontend
│   │   ├── Components/Options/   # Reusable option controls
│   │   ├── Models/                # Data models
│   │   ├── OptionDefinitions/     # Video/Sound/Control page definitions
│   │   ├── Pages/                 # Routable pages (Main, Video, Sound, Control)
│   │   └── Services/              # State management, localization
│   ├── src-tauri/             # Rust backend
│   │   └── src/
│   │       ├── config/            # LTX parser, launcher config, user.ltx I/O
│   │       └── game/              # Game paths, process launcher
│   ├── package.json           # npm scripts (dev, build)
│   └── dev.sh                 # Dev launcher with env overrides
└── README.md