Tools to access Assetto Corsa Competizione shared memory with python. Most information is obtained from the thread in the official forum.
ACC exposes three types of shared memory blocks, acpmf_physics, acpmf_graphics and acpmf_static.
These memory blocks can be accessed in python via a ctypes structure. The helper function get_mapped_object(name) returns
such a structure for both windows and Linux, or raises a FileNotFoundError if the mapping does not (yet) exist.
import pyacc
obj = pyacc.get_mapped_object('acpmf_physics')
print(obj.speedKmh)
The little prog acc_wrapper.exe is needed to map the shared files to linux shm. There are two ways to do this
Go to the ACC steamapps folder and rename acc.exe -> _acc.exe. Copy acc_wrapper.exe into the folder and rename it to acc.exe. When starting ACC from steam, the wrapper is invoked which then starts ACC, maps the files and waits for ACC to finish.
Use the acc_wrapper.sh script to start acc_wrapper.exe in the proton prefix of ACC. The script takes two (and an optional third) arguments:
1. proton version, eg "6.3" or "- Experimental"
2. path to the steamapps dir, eg "/games/steam/steamapps
(3. path to the steamapps dir where proton is installed)
Note: the proton version has to match the one that's select in the "Compatibility" properties page of the game.