# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils flag-o-matic versionator games

MY_PV=$(replace_version_separator 1 '' )

DESCRIPTION="Enhanced engine for iD Software's Quake 1"
HOMEPAGE="http://icculus.org/twilight/darkplaces/"
SRC_URI="http://icculus.org/twilight/${PN}/files/${PN}engine${MY_PV}.zip
	mod? ( http://icculus.org/twilight/${PN}/files/${PN}mod${MY_PV}.zip )"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="alsa cdinstall cdsound dedicated mod opengl oss sdl"
RESTRICT="primaryuri strip"

RDEPEND="sys-libs/glibc
	alsa? ( media-libs/alsa-lib )
	cdinstall? ( games-fps/quake1-data )
	opengl? (
		virtual/opengl
		|| (
			(
				x11-libs/libX11
				x11-libs/libXau
				x11-libs/libXdmcp
				x11-libs/libXext
				x11-libs/libXxf86dga
				x11-libs/libXxf86vm )
			virtual/x11 )
		)
	sdl? (
		media-libs/libsdl
		media-libs/sdl-mixer
		|| (
			(
				x11-libs/libX11
				x11-libs/libXau
				x11-libs/libXdmcp
				x11-libs/libXext )
			virtual/x11 )
		)"
DEPEND="${RDEPEND}
	app-arch/unzip"

S=${WORKDIR}/${PN}
dir=${GAMES_DATADIR}/quake1

pkg_setup() {
	games_pkg_setup

	# A gamer should have opengl and/or sdl in the /etc/make.conf USE flags.
	# opengl, rather than sdl, is best for this game.
	(use opengl || use sdl || use dedicated) || \
		die "At least one of the USE flags 'opengl', 'sdl' and 'dedicated' are required."
}

src_unpack() {
	unpack ${A}

	cd "${WORKDIR}"
	unpack ./${PN}*.zip
	find "${WORKDIR}" -name CVS -type d | xargs rm -r
	cd "${S}"

	# Make the game automatically look in the correct data directory
	sed -i "s:strcpy(fs_basedir, \"\"):strcpy(fs_basedir, \"${dir}\"):" fs.c \
		|| die "sed fs.c failed"

	# Only CFLAGS optimization is the -march flag
	local MARCH=$(get-flag -march)
	sed -i "s:CPUOPTIMIZATIONS=:CPUOPTIMIZATIONS=${MARCH}:" makefile.inc \
		|| die "sed MARCH failed"

	if ! use cdsound ; then
		sed -i "s:cd_linux:cd_null:" makefile.inc \
			|| die "sed cdsound failed"
	fi

	# Default sound is alsa.
	if ! use alsa ; then
		if use oss ; then
			sed -i "s:DEFAULT_SNDAPI=ALSA:DEFAULT_SNDAPI=OSS:" makefile \
				|| die "sed oss failed"
		else
			sed -i "s:DEFAULT_SNDAPI=ALSA:DEFAULT_SNDAPI=NULL:" makefile \
				|| die "sed null failed"
		fi
	fi
}

src_compile() {
	if use opengl ; then
		emake cl-release || die "emake cl-release failed"
	fi

	if use sdl ; then
		emake sdl-release || die "emake sdl-release failed"
	fi

	if use dedicated ; then
		emake sv-release || die "emake sv-release failed"
	fi
}

src_install() {
	local icon="darkplaces72x72.png"

	if use opengl ; then
		dogamesbin ${PN}-glx || die "dogamesbin glx failed"
		newicon "${icon}" ${PN}.png
		make_desktop_entry ${PN}-glx "Dark Places" ${PN}.png
	fi

	if use sdl ; then
		dogamesbin ${PN}-sdl || die "dogamesbin sdl failed"
		if use opengl ; then
			make_desktop_entry ${PN}-sdl "Dark Places (SDL)" ${PN}.png
		else
			newicon "${icon}" ${PN}.png
			make_desktop_entry ${PN}-sdl "Dark Places" ${PN}.png
		fi
	fi

	if use dedicated ; then
		newgamesbin ${PN}-dedicated ${PN}-ded || die "newgamesbin ded failed"
	fi

	if use mod ; then
		insinto "${dir}"
		doins -r "${WORKDIR}"/dpmod || die "doins dpmod failed"
	fi

	dodoc ${PN}.txt ChangeLog todo "${WORKDIR}"/{${PN}-cvschangelog,*.qc}

	prepgamesdirs
}

pkg_postinst() {
	games_pkg_postinst

	if [[ ! -e "${ROOT}/${dir}"/id1/pak0.pak ]] ; then
		einfo "Put the data files into "${ROOT}${dir}"/id1"
		echo
	fi
	if use mod ; then
		einfo "To use the mod, start the game with:"
		einfo "     darkplaces-<gfxmode> -game dpmod"
		einfo "e.g. darkplaces-glx -game dpmod"
		echo
	fi
	if use sdl ; then
		ewarn "If there is an audio delay problem, then try the OpenGL client."
		echo
	fi
}