run.sh: Update SteamLaunch check with a more futureproof check

Author: arrowmaster

assets/nix/run.sh

@@ -63,12 +63,38 @@ corlib_dir=""
 
 # Special case: program is launched via Steam
 # In that case rerun the script via their bootstrapper to ensure Steam overlay works
-if [ "$2" = "SteamLaunch" ]; then
- steam="$1 $2 $3 $4 $0 $5"
- shift 5
- $steam "$@"
- exit
-fi
+steam_arg_helper() {
+ if [ "$executable_name" != "" ] && [ "$1" != "${1%"$executable_name"}" ]; then
+ return 0
+ elif [ "$executable_name" = "" ] && [ "$1" != "${1%.x86_64}" ]; then
+ return 0
+ elif [ "$executable_name" = "" ] && [ "$1" != "${1%.x86}" ]; then
+ return 0
+ else
+ return 1
+ fi
+}
+for a in "$@"; do
+ if [ "$a" = "SteamLaunch" ]; then
+ rotated=0; max=$#
+ while [ $rotated -lt $max ]; do
+ if steam_arg_helper "$1"; then
+ to_rotate=$(($# - rotated))
+ set -- "$@" "$0"
+ while [ $((to_rotate-=1)) -ge 0 ]; do
+ set -- "$@" "$1"
+ shift
+ done
+ exec "$@"
+ else
+ set -- "$@" "$1"
+ shift
+ rotated=$((rotated+1))
+ fi
+ done
+ exit 1
+ fi
+done
 
 # Handle first param being executable name
 if [ -x "$1" ] ; then