Project Wiki

1. Managing Accounts

The launcher supports three types of accounts:

• Microsoft Account: Authenticate via browser. Skins/username sync automatically.
• Ely.by: Enter credentials. Supports automatic skin injection.
• Offline: Enter username. Supports local skin files via settings.

2. Creating Installations

Navigate to the Installations tab to manage versions.

• Create New: Click "+" button.
• Loader: Choose Vanilla, Fabric, or Forge (auto-installed).
• Icon: Select a Minecraft block or custom image.

3. Settings & Customization

• RAM: Adjust slider for memory allocation.
• Wallpapers: Choose pre-loaded or custom images from wallpapers/.
• Rich Presence: Discord status integration.

Refactored (v1.4) structure:

• alt.py: Main entry point and UI.
• auth.py: Ely.by authentication logic.
• handlers.py: HTTP handlers (Skin Server, Microsoft Auth).
• utils.py: Helper functions.

Building from Source

pyinstaller alt.spec

Building for Linux (AppImage)

chmod +x linux/build_appimage.sh
./linux/build_appimage.sh

1. Microsoft/Mojang

Standard OAuth2 flow. Game client contacts Mojang servers directly.

2. Ely.by

Uses authlib-injector to redirect auth requests to Ely.by servers.

3. Offline (Local Injection)

Allows offline skins without modifying the game JAR:

1. Launcher starts a local HTTP server on a random port.
2. Game is launched with authlib-injector pointing to localhost.
3. Local server intercepts profile requests and serves a JSON profile pointing to the local skin file.
4. Game client downloads the texture from the local server.