This program enables other programs which are running under Wine to send Rich Presence data to a Linux Discord client.
This is mainly a proof-of-concept, demonstrating that this is possible, the code itself is a mish-mash of copy-paste from Microsoft docs and linux-discord-rpc.dll.
The way it works is simply by bridging the gap between Windows named pipes
(\\.\pipe\discord-ipc-0) and Unix domain sockets
(/run/user/{userid}/discord-ipc-0).
i686-w64-mingw32-gcc -masm=intel main.c -o winediscordipcbridge
Just run the bridge first, wait for it to start listening to the pipe, and then launch your program/game. The two programs need to be running under the same wineprefix.
If you're using Steam Play/Proton, download and follow the instructions in
winediscordipcbridge-steam.sh. This currently starts the bridge in the
background to act as a 'debugger' before the game starts and opens up the folder
the Linux Discord socket lives in to be read/write. This worked for Deep Rock
Galactic, hopefully the timing of the bridge works correctly for other games.
Alternatively, you can directly use the command below instead of the shell
script. Replace {userid} with your user id (probably 1000). Properties ->
General -> Launch Options:
PROTON_REMOTE_DEBUG_CMD=/path/to/winediscordipcbridge.exe PRESSURE_VESSEL_FILESYSTEMS_RW="/run/user/{userid}/discord-ipc-0" %command%
The bridge should automatically stop once the connecting program terminates, although it'll keep running if nothing ever connects.
I've personally tested this with osu! on both 32-bit and 64-bit wineprefixes, and Muse Dash using the script to launch from Steam with Proton 6.3-8.
https://github.com/lhark/truckersmp-cli also reported success.