mxywes / Proton multiplayer desync script

I wanted to play Sins of the solar Empire 2 with my friends. Proton and Lutris works great for SP, but MP was broke. First blocker was [forcing](https://steamcommunity.com/app/1575940/discussions/1/7026264603287932608/#c7026264603289995255) the CPU architecture: (you can also edit this via ctrl+shift+s while in game) The second was that there were desync issues, which the [community found and fixed](https://steamcommunity.com/app/1575940/discussions/1/7026264603287932608/#c7026264836515783746) for [other games](https://gist.github.com/reneklacan/7825b82723bf0534cbd2eae014e121ca). These desync issues seem to be fairly common with multiplayer games using proton. So you can always try this and copy the backup files back (.bak) if it didn't work. This version adds sha256 checksums of the .exe files. If you run into issues with "command not found", try `dos2unix steam_patch_mp_desync.sh` then retry. The below script is a more agnostic version of the original script to be more generic and work with most games by passing the APP ID ``` chmod +x steam_patch_mp_desync.sh ./steam_patch_mp_desync.sh 111011 ``` To get a list of installed apps run it without a app id ``` ./steam_patch_mp_desync.sh Provide a steam ID from below 1493710 Proton Experimental 1575940 Sins of a Solar Empire II 1628350 Steam Linux Runtime 3.0 (sniper) 1782120 ZERO Sievert 1794680 Vampire Survivors 228980 Steamworks Common Redistributables 250900 The Binding of Isaac: Rebirth 2805730 Proton 9.0 2828860 The Forever Winter 427520 Factorio 469600 Legion TD 2 example for 'Legion TD 2' would be ./steam_patch_mp_desync.sh ``` For deck users just override the `STEAM_USER` variable while running it if it doesn't default to the right user. ``` STEAM_USER=deck ./steam_patch_mp_desync.sh 11011 ``` If you have additional drives setup in steam you'll need to set the full path to `steamapps` directory ``` STEAM_DIR="/mnt/games/steam/steamapps" ./steam_patch_mp_desync.sh 11011 ```

#!/bin/bash set -e APP_ID=${1} STEAM_USER=$USER STEAM_DIR="/home/${STEAM_USER}/.steam/steam/steamapps" APP_DIR="${STEAM_DIR}/compatdata/${APP_ID}" WIN_DIR="${APP_DIR}/pfx/drive_c/windows" WIN_SYS32_DIR="${WIN_DIR}/system32" WIN_SYS64_DIR="${WIN_DIR}/syswow64" VC_REDIST_x64_CKSUM=5eea714e1f22f1875c1cb7b1738b0c0b1f02aec5ecb95f0fdb1c5171c6cd93a3 VC_REDIST_x86_CKSUM=fdd1e1f0dcae2d0aa0720895eff33b927d13076e64464bb7c7e5843b7667cd14 function list_apps() { echo "Provide a steam ID from below" for d in ${STEAM_DIR}/appmanifest*.acf; do id=$(sed -rn 's/\s+"appid"\s+"(.+)\"/\1/p' < $d) name=$(sed -rn 's/\s+"name"\s+"(.+)\"/\1/p' < $d) echo -e "$id\t\t$name" done echo echo echo example for \'$name\' would be $0 $appid echo } function check_deps() { which sha256sum > /dev/null || (echo "sha256sum is required (on Ubuntu you can install it with 'sudo apt-get install coreutils')" && exit 1) which curl > /dev/null || (echo "curl is required (on Ubuntu you can install it with 'sudo apt-get install curl')" && exit 1) which cabextract > /dev/null || (echo "cabextract is required (on Ubuntu you can install it with 'sudo apt-get install cabextract')" && exit 1) test -d ${APP_DIR} || ( echo "$APP_DIR does not exist; application is not supported or installed" && exit 1) test -d ${WIN_DIR} || ( echo "$WIN_DIR does not exist; application is not supported or installed" && exit 1) } function cleanup() { local arch=$1 rm -f vc_redist.$arch.exe rm -rf 0 a{0..11} u{0..31} } function backup() { files="ucrtbase.dll concrt140.dll msvcp140.dll vcamp140.dll vccorlib140.dll vcomp140.dll vcruntime140.dll" for f in $files; do test -f $f || continue echo "Backing up $f => ${f}.bak" cp -n $f ${f}.bak 2> /dev/null || true done } function download_and_replace() { local arch=$1 echo "Downloading vc_redist.$arch.exe" curl -s -O https://download.microsoft.com/download/9/3/F/93FCF1E7-E6A4-478B-96E7-D4B285925B00/vc_redist.$arch.exe echo "Validating archive" csum="VC_REDIST_${arch}_CKSUM" rm -f tmp.sha256 echo "${!csum} vc_redist.$arch.exe" > tmp.sha256 sha256sum -c tmp.sha256 || rm -f tmp.sha256 echo "Extracting archive" cabextract -q vc_redist.$arch.exe 2>/dev/null cabextract -q a10 2>/dev/null echo "Extraction done" } function replace_dlls() { local dir=$1 local arch=$2 echo "Patching $dir with arch $2" pushd "${dir}" > /dev/null backup cleanup $arch download_and_replace $arch cleanup $arch popd > /dev/null echo "Patching complete!" } if [ -z "${APP_ID}" ]; then list_apps exit 1 fi check_deps replace_dlls "${WIN_SYS32_DIR}" x64 replace_dlls "${WIN_SYS64_DIR}" x86