# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit cmake desktop xdg

DESCRIPTION="A modder-friendly OpenGL source port based on the DOOM engine"
HOMEPAGE="https://zdoom.org"
SRC_URI="https://github.com/coelckers/${PN}/archive/g${PV}.tar.gz -> ${P}.tar.gz"

LICENSE="BSD BZIP2 DUMB-0.9.3 GPL-3 LGPL-3 MIT
	non-free? ( Activision ChexQuest3 DOOM-COLLECTORS-EDITION freedist )"
SLOT="0"
KEYWORDS="~amd64 ~arm ~x86"
IUSE="alsa fluidsynth gtk gtk2 mpg123 +non-free openmp sndfile"

DEPEND="
	media-libs/libsdl2[opengl]
	media-libs/openal
	sys-libs/zlib
	virtual/jpeg:0
	alsa? ( media-libs/alsa-lib )
	fluidsynth? ( media-sound/fluidsynth:= )
	gtk? (
		gtk2? ( x11-libs/gtk+:2 )
		!gtk2? ( x11-libs/gtk+:3 )
	)
	mpg123? ( media-sound/mpg123 )
	sndfile? ( media-libs/libsndfile )"
RDEPEND="${DEPEND}"

S="${WORKDIR}/${PN}-g${PV}"

PATCHES=(
	"${FILESDIR}/${PN}-4.2.1-install_soundfonts.patch"
	"${FILESDIR}/${PN}-4.2.1-Introduce-the-BUILD_NONFREE-option.patch"
)

src_prepare() {
	rm -rf docs/licenses || die
	if ! use non-free ; then
		rm -rf wadsrc_bm wadsrc_extra || die
	fi

	cmake_src_prepare
}

src_configure() {
	local mycmakeargs=(
		-DINSTALL_DOCS_PATH="${EPREFIX}/usr/share/doc/${PF}"
		-DINSTALL_PK3_PATH="${EPREFIX}/usr/share/doom"
		-DINSTALL_SOUNDFONT_PATH="${EPREFIX}/usr/share/doom"
		-DDYN_FLUIDSYNTH=OFF
		-DDYN_OPENAL=OFF
		-DDYN_SNDFILE=OFF
		-DDYN_MPG123=OFF
		-DNO_GTK="$(usex !gtk)"
		-DNO_OPENAL=OFF
		-DNO_OPENMP="$(usex !openmp)"
		-DBUILD_NONFREE="$(usex non-free)"
		-DCMAKE_DISABLE_FIND_PACKAGE_ALSA="$(usex !alsa)"
		-DCMAKE_DISABLE_FIND_PACKAGE_FluidSynth="$(usex !fluidsynth)"
		-DCMAKE_DISABLE_FIND_PACKAGE_MPG123="$(usex !mpg123)"
		-DCMAKE_DISABLE_FIND_PACKAGE_SndFile="$(usex !sndfile)"
	)
	cmake_src_configure
}

src_install() {
	newicon src/posix/zdoom.xpm "${PN}.xpm"
	make_desktop_entry "${PN}" "GZDoom" "${PN}" "Game;ActionGame"
	cmake_src_install
}

pkg_postinst() {
	xdg_pkg_postinst

	if ! use non-free ; then
		ewarn
		ewarn "GZDoom installed without non-free components."
		ewarn "Note: The non-free game_support.pk3 file is needed to play"
		ewarn "      games natively supported by GZDoom."
		ewarn "A list of games natively supported by GZDoom is available"
		ewarn "on the ZDoom wiki: https://zdoom.org/wiki/IWAD"
		ewarn
	fi
}