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#!/bin/sh
#
# Zelda Classic bug workaround - (c) exponential 2022

#SKIP="true"
#
SKIP="false"

if [ "$SKIP" = "false" ] && [ -n "$(command -v Xephyr 2>/dev/null)" ]; then

  if echo "$@" | grep -q -- "-fullscreen" 2>/dev/null || echo "$@" | grep -vq -- "-windowed" 2>/dev/null && cat "ag.cfg" | grep "^fullscreen" | tail -n 1 | grep -q "1" 2>/dev/null ; then

  screen="$(xrandr -q  | grep '*' | sed 's/^\s*//' | sed 's/\s.*$//')"
  fullscreen="-fullscreen"

  else
     if echo "$@" | grep -q "-windowed" 2>/dev/null ; then

        screen="$(echo ""$@"" | sed 's!.*res \([0-9]*\) \([0-9]*\).*!\1x\2!')"

     else

        screenx="$( cat ag.cfg | grep resx | sed 's/resx *= *\([0-9]*\).*/\1/')"
        screeny="$( cat ag.cfg | grep resy | sed 's/resy *= *\([0-9]*\).*/\1/')"
        screen="${screenx}x${screeny}"
     fi
   fi

  Xephyr -br $fullscreen -reset -terminate -screen "$screen" :10 &
  DISPLAY=:10 exec /usr/libexec/zelda-classic/zelda-l.real "$@"

else

  exec /usr/libexec/zelda-classic/zelda-l.real "$@"

fi