Hogwarts Legacy SpellCaster

Cast spells in Hogwarts Legacy with your voice. Say "Incendio" and the spell is cast, whatever is on your spell bar.

SpellCaster listens to your microphone, recognises the incantation with a speech model fine-tuned on the spell vocabulary, and casts the spell inside the game through a UE4SS mod. Everything runs locally on your machine.

Version française : README-FR.md.

How it works

 microphone ─► desktop application ─► shared memory ─► UE4SS mod ─► game
              (VAD + Whisper or Moonshine)             (casts via WandTool)

The desktop application does the listening and the recognition. It forwards each recognised spell name to the mod, which casts it through the game's own spell system. Because the mod drives the game logic directly, there is no key binding or controller layout to configure.

Two older output paths are still available for setups without the mod: a virtual Xbox controller (ViGEm) that presses the buttons of your spell bar, and a UEVR plugin for VR play.

For players

1. Download the latest HogwartsLegacy-SpellCaster-win-x64-<version>.zip from the Releases page and unzip it anywhere.
2. Run HogwartsLegacy-SpellCaster.exe. On first start it asks which microphone to use, whether you want to contribute recordings to improve the models, and installs UE4SS and the SpellCaster mod into your game folder. Steam installations are found automatically; otherwise set game_path in config.ini to your Hogwarts Legacy\Phoenix\Binaries\Win64 folder.
3. Start the game, load a save, and speak.

Requirements: Windows 10 or 11, 64-bit, a microphone. Recognition runs on the CPU by default; a Vulkan-capable GPU speeds up the Whisper engine. Choose the engine with engine=whisper or engine=moonshine in config.ini.

The spellbook folder in the release shows every recognised phrase with its pronunciation. If something does not work, the console output of the application and UE4SS_Logs\UE4SS.log in the game folder tell most of the story; bring them to the Discord linked below.

Spells

Everything the mod can cast is listed in ue4ss-mod/SpellCasterMod/dllmain.cpp. In short:

Repository layout

• Building any of the three: BUILDING.md
• Adding spells or otherwise contributing: CONTRIBUTING.md
• How the application talks to the mod: docs/ipc-protocol.md
• What is known to need work: docs/known-issues.md
• Licences of everything bundled: THIRD_PARTY_LICENSES.md

Releases

Community and support

Created by Cornebidouil. Questions, feedback and recordings for the models are all welcome:

• Discord: https://discord.gg/zE4NRsTGdw
• Training portal (help improve recognition): http://hogwartslegacyspellcaster.xyz
• GitHub: https://github.com/pierre-cheneau

If you enjoy the project and want to support its development: ETH 0x1F61fa7923d5E914A5Fdf36B584a1336fde20721

Licence

MIT, see LICENSE. Hogwarts Legacy is a trademark of Warner Bros. Entertainment Inc.; this is an independent fan project.