#!/usr/bin/env mksh
# Script by Ypnose - http://ywstd.fr
# 4 Ultraviolent, 5 Nightmare. Previous skill levels are designed for milksops.
# Make sure your DOOM2.WAD is in $HOME/.prboom(-plus)

function usage {
	print "usage: doosh [-d WAD DIRECTORY] [-h] [-s SKILL LVL]"
	exit
}

function p_err {
	print -ru2 -- "$1"
	exit 1
}

while getopts ":d:s:" opt; do
	case "$opt" in
		d) DOO_MLDIR="$OPTARG"
			;;
		s) DOO_SKIW="$OPTARG"
			;;
		*) usage
			;;
	esac
done
shift $(( OPTIND - 1 ))

if [[ -z $DOO_MLDIR ]]; then
	p_err "WAD directory not specified"
elif [[ ! -d $DOO_MLDIR ]]; then
	p_err "$DOO_MLDIR is missing"
fi

if [[ -n $DOO_SKIW ]] && (( DOO_SKIW < 1 || DOO_SKIW > 5 )); then
	p_err "Wrong skill level"
fi

PS3='Choose the Master Levels WAD: '
select DOO_NAMW in ATTACK BLACKTWR BLOODSEA CANYON CATWALK COMBINE \
	FISTULA GARRISON GERYON MANOR MEPHISTO MINOS NESSUS PARADOX \
	SUBSPACE SUBTERRA TEETH TTRAP VESPERAS VIRGIL; do
	case $REPLY in
		1)  DOO_LVLW="01" ;;
		2)  DOO_LVLW="25" ;;
		3)  DOO_LVLW="07" ;;
		4)  DOO_LVLW="01" ;;
		5)  DOO_LVLW="01" ;;
		6)  DOO_LVLW="01" ;;
		7)  DOO_LVLW="01" ;;
		8)  DOO_LVLW="01" ;;
		9)  DOO_LVLW="08" ;;
		10) DOO_LVLW="01" ;;
		11) DOO_LVLW="07" ;;
		12) DOO_LVLW="05" ;;
		13) DOO_LVLW="07" ;;
		14) DOO_LVLW="01" ;;
		15) DOO_LVLW="01" ;;
		16) DOO_LVLW="01" ;;
		17) DOO_LVLW="31" ;; # 32 Secret Level
		18) DOO_LVLW="01" ;;
		19) DOO_LVLW="09" ;;
		20) DOO_LVLW="03" ;;
		*)  p_err "Wrong number" ;;
	esac
	if [[ -f "${DOO_MLDIR}/${DOO_NAMW}.WAD" ]]; then
		prboom -complevel 2 -iwad DOOM2.WAD -file "${DOO_MLDIR}/${DOO_NAMW}.WAD" \
			-warp "$DOO_LVLW" -skill "${DOO_SKIW:-4}"
	else
		p_err "${DOO_NAMW}.WAD is missing in $DOO_MLDIR"
	fi
done

exit