#!/bin/sh

## by ryan@slipgate.org
## i hate having a RUN_DEPENDS on bash.
## makes use of $PREFIX, substituted with proper paths during build in
## OpenBSD ports.  I hope this can be leveraged by other package systems.
## also this removes the need for four different perl string replacements
## to the original bash script because it made very linux-y assumptions.

# define iwads
# wads that eternity can load (even though heretic support still seems bork)
export wads="doom2.wad doom2f.wad plutonia.wad tnt.wad doom.wad doomu.wad
doom1.wad heretic.wad heretic1.wad freedoom.wad freedoomu.wad freedoom1.wad
hacx.wad"

# set variables for eternity.real
export ETERNITYBASE="$HOME/.eternity/base"
export DOOMWADDIR="$HOME/.eternity/"

# PREFIX gets filled on some systems, fall back to a default if not
if [ $PREFIX='' ]; then PREFIX=/usr/local; fi

# similar to existing, check for startup.wad for eternity base
if [ ! -e "$HOME/.eternity/base/startup.wad" ]
then
	echo "$HOME/.eternity/base/startup.wad not found."
	echo "Assuming first run or corrupted base"
	mkdir -p $HOME/.eternity/
	cp -fR ${PREFIX}/share/eternity-engine/base $HOME/.eternity/base
else
	echo "Eternity base found at $HOME/.eternity/base/"
fi

# traverse iwads, install if needed
for i in $wads
do
	echo "Searching for: $i"
	if [ ! -e $HOME/.eternity/$i ]
	then
		if [ -e ${PREFIX}/share/doom/$i ]
		then
			echo "Installing: $i"
			ln -s ${PREFIX}/share/doom/$i $HOME/.eternity/$i
		fi
	else
		echo "Found: $i"
	fi
done
eternity.real $@