Python module for applying fixes at runtime for games not supported by Steam Proton
A module for applying fixes at runtime to unsupported games with Steam Proton without changing game installation files. The idea is to include seperate fixes that are only loaded when a game matching that ID is run. This should keep the individual game fixes from affecting any other games. Applying the fixes at runtime should also them to persist after game updates.
Current fixes include:
- Final Fantasy IX
- Oddworld: Abe's Oddysee
- Styx: Master of Shadows
Current utilities available:
- installs a winetricks verb
- creates and uses a win32 (32bit) wineprefix
- util.replace_command('original', 'replacement')
- replaces text in the game's launch command
- adds an argument to the game's launch command
- returns the path of the current wineprefix used by Proton
If you want to be able to use fixes with winetricks it must be installed and be in your $PATH. Fixes that do not use winetricks will still work without winetricks being installed.
Winetricks can take a long time to load
If you want to use a win32 (32bit) prefix, you need to have wine installed and be in your $PATH. Currently creating a 32bit prefix with Proton wine doesn't work because the wineserver is already running by the time
user_settings.py is loaded.
For the splashscreen to work, you need to have
cefpython3 installed. It can be installed with pip using
sudo pip install cefpython3. The splashscreen can help let you know that protonfixes is running a long task, for example installing
Install from PIP
# sudo pip install protonfixes
Install using setuptools
# sudo python setup.py install
Add to user_settings.py
In the steamapps/common/Proton* directory, add the following line to the
If there is no
user_settings.py file, make a copy of the
user_settings.sample.py file included with Proton.
Writing Game Fixes
Game fixes are written in python and are named by the Steam game ID with the extension .py. For example, the file
377840.py will be loaded when the game FINAL FANTASY IX is run. Gamefixes can be added to the
~/.config/protonfixes/localfixes/ directory. Here are some things to consider when writing fixes:
- Only import libraries that are part of the Python standard library for portability.
- Use docstrings and comment thoroughly. There will likely be people without python experience making game fixes and good commented examples will help
- Do not use any hard-coded paths, Steam may not always be installed in the same location.
- Check your gamefix with pylint. You can safely disable warning C0103, modules named by Steam ID will never conform to snake_case naming style.
When testing, local fixes can be added to
~/.config/protonfixes/localfixes/. They should be imported the same way as an included fix would be. For example,
~/.config/protonfixes/localfixes/377840.py would be loaded for FFIX. Please feel free to submit working gamefixes to improve the project.
Example game fixes
377840.py - Changing the executable launched and setting an environment variable
import os from protonfixes import util def main(): """ Bypass the launcher and fix audio """ print('Applying FINAL FANTASY IX Game Fixes') # Fix crackling audio os.environ['PULSE_LATENCY_MSEC'] = '60' # Replace launcher with game exe in proton arguments util.replace_command('FF9_Launcher', 'x64/FF9.exe')
410900.py - Running a winetricks verb
from protonfixes import util def main(): """ Uses winetricks to install the ole32 verb """ print('Applying fixes for Forts') util.protontricks('ole32')
15700.py - Example using a win32 prefix
Oddworld doesn't actually require a win32 prefix or dotnet35, but I used it for testing since it's 32bit
import sys from protonfixes import util def main(): """ Adds -interline to arguments, uses a win32 prefix, and installs dotnet35 """ print('Applying fixes for Oddworld: Abe\'s Oddysee') # Adding -interline fixes slow video but adds scanlines util.append_argument('-interline') print('Using a win32 prefix') util.use_win32_prefix() # Make sure any winetricks are run after changing to a win32 prefix util.protontricks('dotnet35')
Pull requests are welcome! If you're not comfortable doing pull requests, send your fixes to me by any other means and you will be credited in the comments.
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