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 allow fixes to persist after game updates.

Current fixes include:

• Final Fantasy IX
• Oddworld: Abe's Oddysee
• Forts

# sudo pip install protonfixes

# sudo python setup.py install

In the steamapps/common/Proton* directory, add the following line to user_settings.py:

import protonfixes

If there is no user_settings.py file, make a copy of the user_settings.sample.py file.

Game fixes written in python and are named by the Steam game ID with the extension .py. For example, the file gamefixes/377840.py will be loaded when the game FINAL FANTASY IX is run. 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.
• Pull requests are welcome!

377840.py - Changing the executable launched

import os
import sys


def main():
    """ Changes the proton argument from the launcher to the game
    """

    print('Applying FINAL FANTASY IX Game Fixes')

    # Fix crackling audio
    os.environ['PULSE_LATENCY_MSEC'] = '60'

    # Replace launcher with game exe in proton arguments
    for idx, env in enumerate(sys.argv):
        if 'FF9_Launcher' in env:
            sys.argv[idx] = env.replace('FF9_Launcher.exe', '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')

    if not util.checkinstalled('ole32'):
        util.protontricks('ole32')