Game Installer Script (v2.8) Based on JC141 Script

#!/bin/bash
#
# My Game Installer Script Based on the JC141 Script from BG3. v2.8
#
# Takes a folder name on the command line, searches for applicable .EXE files in it, displays the list asking
# for input, creates all the applicable directories and a WINE prefix if the prefix doesn't already exist,
# calls WINE to run the user-selected setup, downloads and installs the newest version of VULKAN, checks the
# install folder for another .EXE, asking you to pick one from the list, and writes a Game Starter Script out
# containing everything required to run the game in a WINE prefix, a secondary check for Vulkan updates, and
# ultimately run the chosen .EXE in WINE.
#
# Changes from v2.75:
# - Fixed the broken ".exe" finder loop that looks for the installer and moved variable declarations up top.
# - Cleaned up EXE finder result string by stripping the path out, leaving just the filename.
#
# Changes from v2.5:
# - Changed game installer from "setup.exe" to a user-selectable one using the same loop idea I added in 2.0 to
#   search for the game .EXE after install since not all games use "setup.exe" explicitly, and some GoG games
#   will fail if you rename the installer to "setup.exe" to accommodate the script - which I learned the hard
#   way. I plan to consolidate this into a single function in the next version but BASH functions are a little
#   persnickety sometimes, so this will do for now.
#
# Changes from v2.0:
# - Added a loop to locate any ".exe" files in $GAMEDEST and store them in an array, print array as numbered list,
#   ask user to select a listed ".exe" and write it to $GSS, verified with error-checking.
# - Modified MSVC loop

IFS=$'\n'
# Basic checks
cd "$(dirname "$(readlink -f "$0")")" || exit; [ "$EUID" = "0" ] && echo "Please don't run as root!" && exit; [ "$1" = "" ] && echo "Command line can't be blank - please choose a game folder." && exit

if [ ! -d "$1" ]; then
    echo "I can't find \"$1\" and suggest checking your spelling."
    exit 255
fi

# Declarations
export G="${1// /_}"
export GAMESRC="$PWD/$1"
export WINEPREFIX="/home/$(whoami)/Games/jc141" #Create Wineprefix
export GAMEDIR="$WINEPREFIX/drive_c/Games/$1"
export GSS="$WINEPREFIX/drive_c/${G}.sh" #Convert spaces to underscores, if they exist, for the launcher script
export RSRC="$PWD/redist"
export WINE="$(command -v wine)"
export WINEDLLOVERRIDES="winemenubuilder.exe=d;mshtml=d;nvapi,nvapi64=n"
export WINE_LARGE_ADDRESS_AWARE=1

cd "$GAMESRC"

echo "Select game installer from the following list:"
SETUPEXE=( $(find "$GAMESRC" -type f -name "*.exe") )
echo ""
PS3="#: "

select file in "${SETUPEXE[@]}"; do
    if [[ -z $file ]]; then
        echo "Uh... Excuse me? Let's try that again." >&2
    else
        EXE="${file##*/}"
        echo ""
        echo "You've selected \"$EXE\" - it's too late to change your mind now."
        echo ""
        break
    fi
done

echo ""
echo "Declarations:"
echo ""
echo "G=\"${1// /_}\""
echo "GAMESRC=\"$PWD/$1\""
echo "WINEPREFIX=\"/home/$(whoami)/Games/jc141\""
echo "GAMEDIR=\"$WINEPREFIX/drive_c/Games"
echo "GSS=\"$WINEPREFIX/drive_c/${G}.sh\""
echo "RSRC=\"$PWD/redist\""
echo "WINE=\"$(command -v wine)\""
echo "WINEDLLOVERRIDES=\"winemenubuilder.exe=d;mshtml=d;nvapi,nvapi64=n\""
echo "Game Instraller=$SETUPFILE"
echo ""
echo "Variables Declared. Starting Vulkan setup."
echo ""
echo ""

# external vulkan translation
#export DXVK_ASYNC=1

[ ! -d "$GAMEDEST" ] && mkdir -p "$GAMEDEST" #If $GAMEDEST doesn't exist, create it

ping -c 1 github.com >/dev/null || { echo "Possibly no network. This may mean that booting will fail." ; }; VLKLOG="$WINEPREFIX/vulkan.log"; VULKAN="$PWD/vulkan"
VLKVER="$(curl -s -m 5 https://api.github.com/repos/jc141x/vulkan/releases/latest | awk -F '["/]' '/"browser_download_url":/ {print $11}' | cut -c 1-)"
status-vulkan() { [[ ! -f "$VLKLOG" || -z "$(awk "/^${FUNCNAME[1]}\$/ {print \$1}" "$VLKLOG" 2>/dev/null)" ]] || { echo "${FUNCNAME[1]} present" && return 1; }; }
vulkan() { DL_URL="$(curl -s https://api.github.com/repos/jc141x/vulkan/releases/latest | awk -F '["]' '/"browser_download_url":/ {print $4}')"; VLK="$(basename "$DL_URL")"
[ ! -f "$VLK" ] && command -v curl >/dev/null 2>&1 && curl -LO "$DL_URL" && tar -xvf "vulkan.tar.xz" || { rm "$VLK" && echo "ERROR: Failed to extract vulkan translation." && return 1; }
rm -rf "vulkan.tar.xz" && bash "$PWD/vulkan/setup-vulkan.sh" && rm -Rf "$VULKAN"; }
vulkan-dl() { echo "Using external vulkan translation (dxvk,vkd3d,dxvk-nvapi)." && vulkan && echo "$VLKVER" >"$VLKLOG"; }
[[ ! -f "$VLKLOG" && -z "$(status-vulkan)" ]] && vulkan-dl;
[[ -f "$VLKLOG" && -n "$VLKVER" && "$VLKVER" != "$(awk '{print $1}' "$VLKLOG")" ]] && { rm -f vulkan.tar.xz || true; } && vulkan-dl; export DXVK_ENABLE_NVAPI=1

echo ""
if [ "$2" == "skip" ]
then
    YN="n"
else
    read -p "Install MSVC redistributables? (y/n) " YN
fi
echo ""
case $YN in
    [yY] ) echo "Proceeding with install.";
      cd "$RSRC";
      for i in *.exe;
        do
            echo "Installing $i into $WINEPREFIX";
            "$WINE" "$i";
        done;;
    [nN] ) echo "Skipping redistributables. Don't blame me if something breaks.";;
    * ) echo "Invalid response.";
        break;;
esac

# start installer
echo ""
echo "Starting \"$1\" installer..."
echo ""

cd "$GAMESRC"
"$WINE" "$EXE" "$@"

if [ $? -ne 0 ]; then
    echo ""
    echo "Looks like something went wrong. The error was \"$?\"."
    echo ""
    exit 1
fi

EXE="" # Blanking it, just in case

cd "$GAMEDEST"
echo "Select your executable from the following list:"
echo ""
EXELIST=( $(find $GAMEDEST -type f -name "*.exe") )
PS3="#: "

select file in "${EXELIST[@]}"; do
    if [[ -z $file ]]; then
        echo "Uh... Excuse me? Let's try that again." >&2
    else
        EXE="${file##*/}"
        echo ""
        echo "You've selected: \"$EXE\""
        echo "Not my fault if it doesn't work."
        echo ""
        break
    fi
done

echo ""
echo "Writing Game Starter Script (GSS) for $1 to $GSS ..."
echo ""

#create game starter script
cat << EOL > "$GSS"
#!/bin/bash

# $GSS #

cd "\$(dirname "\$(readlink -f "\$0")")" || exit; [ "\$EUID" = "0" ] && echo "Please don't run as root!" && exit

# wine
export WINE="\$(command -v wine)"
export WINEPREFIX="/home/\$(whoami)/Games/jc141"
export WINEDLLOVERRIDES="winemenubuilder.exe=d;mshtml=d;nvapi,nvapi64=n"
export WINE_LARGE_ADDRESS_AWARE=1
export GAMEDIR="\$WINEPREFIX/drive_c/Games/$1"

# external vulkan translation
#export DXVK_ASYNC=1

ping -c 1 github.com >/dev/null || { echo "Possibly no network. This may mean that booting will fail." ; }; VLKLOG="\$WINEPREFIX/vulkan.log"; VULKAN="\$PWD/vulkan"
VLKVER="\$(curl -s -m 5 https://api.github.com/repos/jc141x/vulkan/releases/latest | awk -F '["/]' '/"browser_download_url":/ {print \$11}' | cut -c 1-)"
status-vulkan() { [[ ! -f "\$VLKLOG" || -z "\$(awk "/^\${FUNCNAME[1]}\$/ {print \$1}" "\$VLKLOG" 2>/dev/null)" ]] || { echo "\${FUNCNAME[1]} present" && return 1; }; }
vulkan() { DL_URL="\$(curl -s https://api.github.com/repos/jc141x/vulkan/releases/latest | awk -F '["]' '/"browser_download_url":/ {print \$4}')"; VLK="\$(basename "\$DL_URL")"
[ ! -f "\$VLK" ] && command -v curl >/dev/null 2>&1 && curl -LO "\$DL_URL" && tar -xvf "vulkan.tar.xz" || { rm "\$VLK" && echo "ERROR: Failed to extract vulkan translation." && return 1; }
rm -rf "vulkan.tar.xz" && bash "\$PWD/vulkan/setup-vulkan.sh" && rm -Rf "\$VULKAN"; }
vulkan-dl() { echo "Using external vulkan translation (dxvk,vkd3d,dxvk-nvapi)." && vulkan && echo "\$VLKVER" >"\$VLKLOG"; }
[[ ! -f "\$VLKLOG" && -z "\$(status-vulkan)" ]] && vulkan-dl;
[[ -f "\$VLKLOG" && -n "\$VLKVER" && "\$VLKVER" != "\$(awk '{print \$1}' "\$VLKLOG")" ]] && { rm -f vulkan.tar.xz || true; } && vulkan-dl

# start
export DXVK_ENABLE_NVAPI=1
cd "\$GAMEDEST"
"\$WINE" "$EXE" "\$@"
EOL

chmod a+x "$GSS"
echo ""
cat $GSS
echo ""
echo "\"$GSS\" written and made executable."
echo ""

echo ""
echo "Path of the $1 wineprefix is: $WINEPREFIX"
echo ""
echo "Be sure to verify that the game executable written to \"$GSS\" is actually \"$EXE\" and modify if necessary."
echo ""