Game Installer Script (v2) Based on JC141 Script

#!/bin/bash
#
# V2 of my Game Installer Script Based on the original JC141 Script as it appeared in BG3.
# Assumes multiple games are stored in conveniently-named subdirectories with a 'setup.exe' in them, and
# takes a folder name on the command line, creates all the applicable directories and a WINE prefix for
# it, downloads and installs, the newest version of VULKAN, starts the setup.exe located in the folder
# provided on the command line, and writes a version of the installer script out as the game start script.
#
# Changes from v1:
# - Rather than create individually named bottles each time it gets run as V1 did, this version installs
#   the game to a named folder in a pre-set prefix to conserve disk space, which I plan to make optional in V3.
# - Replaces whitespace in the command line with underscores to make a custom named starting script for the game
#   which replaces the original version of starting script, reflecting changes made to this installer.
# - Copies and runs all MSVCPP redistributables from the folder REDIST, located in the script's starting directory.
# - Removed WAN blocking
# - Removed dwarfs checking
# - Added some extra directory and CLI parameter verification checks
# - Added some notes
# - Added a loop to copy and install MSVC 2022 redistributables
# - Made installer script partially interactive
# TO DO in v3:
# - Add colour to prompts and output (probably)

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

if [ ! -d "$1" ]; then
    echo "Sorry... I can't find \"$1\" in this folder."
    exit 255
elif [ ! -f "$1/setup.exe" ]; then
    echo "Sorry... \"$1\" doesn't have a \"setup.exe\" installer."
    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/$1"; [ ! -d "$GAMEDIR" ] && mkdir -p "$GAMEDIR" #If $GAMEDIR doesn't exist, create it
export GSS="$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

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 ""
echo "Variables Declared. Starting Vulkan setup."
echo ""
echo ""

# 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; export DXVK_ENABLE_NVAPI=1

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

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 "\$GAMEDIR"
"\$WINE" "setup.exe" "\$@"
EOL

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

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

cd "$GAMESRC"; "$WINE" "setup.exe" "$@"

echo ""
echo "Path of the $1 wineprefix is: $WINEPREFIX"
echo ""
echo "Be sure to change the name of the game executable in \"$GSS\" from \"setup.exe\"."