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# Copyright 1999-2010 Gentoo Foundation

# Distributed under the terms of the GNU General Public License v2

# $Header: $

EAPI=3

inherit eutils games

MY_PN="${PN//-/_}"

DESCRIPTION="Amnesia: The Dark Descent is a first person survival horror. A game about immersion, discovery and living through a nightmare."

HOMEPAGE="http://www.amnesiagame.com"

SRC_URI="${MY_PN}_${PV}.sh"

RESTRICT="fetch strip"

LICENSE="Frictional_Games-EULA"

SLOT="0"

KEYWORDS="amd64 x86"

IUSE="doc linguas_de linguas_en linguas_es linguas_fr linguas_it"

DEPEND="app-arch/xz-utils"

RDEPEND="media-libs/freealut

	media-libs/glew

	media-libs/jpeg:62

	media-libs/libogg

	media-libs/libvorbis

	media-libs/libpng:1.2

	media-libs/libtheora

	media-libs/openal

	media-libs/sdl-image

	media-libs/sdl-ttf

	sys-libs/zlib

	x11-libs/fltk:1

	x11-libs/libX11

	x11-libs/libXau

	x11-libs/libxcb

	x11-libs/libXdmcp

	x11-libs/libXext

	virtual/glu

	virtual/opengl"

S="${WORKDIR}/${PN}"

GAMEDIR="${GAMES_PREFIX_OPT}/${PN}"

GAMES_CHECK_LICENSE="yes"

pkg_nofetch() {

	einfo "Please buy and download \"${SRC_URI}\" from:"

	einfo "  ${HOMEPAGE}"

	einfo "and move it to \"${DISTDIR}\""

	einfo

}

src_unpack() {

	mkdir "tmp" || die "mkdir \"tmp\" failed"

	cd "./tmp" || die "cd \"tmp\" failed"

	unpack_makeself || die "unpack_makeself failed"

	mv "subarch" "installer.tar.lzma" || die "move \"subarch\" failed"

	unpack "./installer.tar.lzma" || die "unpack \"installer.tar.lzma\" failed"

	mv "instarchive_all" "../${P}.tar.lzma" || die "move \"instarchive_all\" failed"

	if use amd64

	then

		mv "instarchive_all_x86_64" "../${P}-amd64.tar.lzma" || die "move \"instarchive_all_x86_64\" failed"

	fi

	if use x86

	then

		mv "instarchive_all_x86" "../${P}-x86.tar.lzma" || die "move \"instarchive_all_x86\" failed"

	fi

	mv "icon.xpm" "../${PN}.xpm"

	cd "${WORKDIR}" || die "cd \"${WORKDIR}\" failed"

	unpack ./*.tar.lzma || die "unpack failed"

	mv "Amnesia" "${PN}" || die "mv \"Amnesia\" failed"

	rm ./*.tar.lzma

	rm -r "./tmp"

}

src_prepare() {

	# Files to remove.

	REMOVE="libs*/all

		Amnesia.png

		AmnesiaPDF.png

		checklibs*.sh"

	# Collect infos about languages...

	LINGUAS_ARRAY=()

	LANG_ARRAY=()

	LANGUAGE_ARRAY=()

	USE_ARRAY=()

	DEF_ARRAY=()

	DOC_ARRAY=()

	local linguas_def="0"

	local linguas_in_use="0"

	for use in ${IUSE}

	do

		if [[ "${use%%_*}" == "linguas" ]]

		then

			local tmp="${use}"

			LINGUAS_ARRAY=(${LINGUAS_ARRAY[@]} "${tmp}")

			tmp="${tmp##linguas_}"

			LANG_ARRAY=(${LANG_ARRAY[@]} "${tmp}")

			case "${tmp}" in

			    "de") tmp="german";;

			    "en") tmp="english";;

			    "es") tmp="spanish";;

			    "fr") tmp="french";;

			    "it") tmp="italian";;

			    *) tmp="";;

			esac

			LANGUAGE_ARRAY=(${LANGUAGE_ARRAY[@]} "${tmp}")

			if use ${use}

			then

				USE_ARRAY=(${USE_ARRAY[@]} "1")

				case "${use}" in

					"linguas_${LANG:0:2}") DEF_ARRAY=(${DEF_ARRAY[@]} "2"); linguas_def="2";;

					"linguas_en") DEF_ARRAY=(${DEF_ARRAY[@]} "1"); linguas_def="$(( ${linguas_def:-0} < 2 ? 1 : 2 ))";;

					*) DEF_ARRAY=(${DEF_ARRAY[@]} "0");;

				esac

				if use doc

				then

					DOC_ARRAY=(${DOC_ARRAY[@]} "1")

				else

					DOC_ARRAY=(${DOC_ARRAY[@]} "0")

				fi

				linguas_in_use="$(( ${linguas_in_use} + 1 ))"

			else

				USE_ARRAY=(${USE_ARRAY[@]} "0")

				DEF_ARRAY=(${DEF_ARRAY[@]} "0")

				DOC_ARRAY=(${DOC_ARRAY[@]} "0")

			fi

		fi

	done

	# ...then process them.

	local n="0"

	local linguas_set="0"

	while [[ "${n}" -lt "${#LINGUAS_ARRAY[@]}" ]]

	do

		if [[ "${USE_ARRAY[${n}]}" != "1" ]]

		then

			# If no linguas keep at least english.

			if [[ "${linguas_in_use}" == "0" && "${LINGUAS_ARRAY[${n}]}" == "linguas_en" ]]

			then

				if use doc

				then

					DOC_ARRAY[${n}]="1"

				fi

			else

				REMOVE="${REMOVE} config/base_${LANGUAGE_ARRAY[${n}]}.lang config/lang_main/${LANGUAGE_ARRAY[${n}]}.lang"

			fi

		else

			# Prefer languages in this order: system lang - english - first of others. Don't change anything if english (linguas_def == 1).

			if [[ "${DEF_ARRAY[${n}]}" == "${linguas_def}" && "${linguas_def}" != "1" && "${linguas_set}" != "1" ]]

			then

				sed -e "s#english.lang#${LANGUAGE_ARRAY[${n}]}.lang#g" \

				    -i "./config/main_init.cfg" || die "sed \"./config/main_init.cfg\" failed"

				linguas_set="1"

			fi

		fi

		if [[ "${DOC_ARRAY[${n}]}" != "1" ]]

		then

			REMOVE="${REMOVE} EULA_${LANG_ARRAY[${n}]}.rtf Manual_${LANG_ARRAY[${n}]}.pdf"

		fi

		n="$(( ${n} + 1 ))"

	done

	einfo " Removing useless files ..."

	for remove in ${REMOVE}

	do

		rm -r "${S}/"${remove} || die "rm \"${remove}\" failed"

	done

	if use amd64

	then

		mv "Amnesia.bin64" "Amnesia.bin" || die "mv \"Amnesia.bin64\" failed"

		mv "Launcher.bin64" "Launcher.bin" || die "mv \"Launcher.bin64\" failed"

	fi

}

src_install() {

	# Install data

	insinto "${GAMEDIR}" || die "insinto \"${GAMEDIR}\" failed"

	einfo " Installing game data files ..."

	for directory in $(find * -maxdepth 0 -type d ! -name "libs*")

	do

		doins -r ${directory} || die "doins game data files failed"

	done

	# Other files

	find . -maxdepth 1 -type f ! -name "*.bin" \

				   ! -name "*.pdf" \

				   ! -name "*.png" \

				   ! -name "*.rtf" \

				   ! -name "*.sh" \

				   -exec doins '{}' \; || die "doins other files failed"

	# Install libraries and executables

	einfo " Installing libraries and executables ..."

	if use amd64

	then

		local libsdir="${GAMEDIR}/libs64"

	fi

	if use x86

	then

		local libsdir="${GAMEDIR}/libs"

	fi

	# Used LibIL (media-libs/devil) isn't in portage as too old

	exeinto "${libsdir}" || die "exeinto \"${libsdir}\" failed"

	doexe libs*/libIL* || die "doexe \"libs\" failed"

	# Used LibGlEW may not be installed the game is using 1.5, there is 1.6 in portage

	doexe libs*/libGLEW* die "doexe \"libs\" failed"

	exeinto "${GAMEDIR}" || die "exeinto \"${GAMEDIR}\" failed"

	doexe *.bin || die "doexe \".bin\" binaries failed"

	# Make game wrapper

	mkdir -p "${D}/${GAMES_BINDIR}" || die "mkdir \"${D}/${GAMES_BINDIR}\" failed"

	local wrapper="${D}/${GAMES_BINDIR}/${PN}"

	touch "${wrapper}" || die "touch \"${wrapper}\" failed"

	cat << EOF >> "${wrapper}" || die "echo failed"

#!/bin/sh

cd "${GAMEDIR}"

if [[ -w "\${HOME}/.frictionalgames/Amnesia/Main/main_settings.cfg" ]]

then

  exec ./Amnesia.bin "\${@}"

else

  exec ./Launcher.bin "\${@}"

fi

EOF

	# Install icon and desktop file

	doicon "../${PN}.xpm" || die "newicon \"icon.xpm\" failed"

	make_desktop_entry "${PN}" "Amnesia: The Dark Descent" || die "make_desktop_entry failed"

	# Install documentation

	if use doc

	then

		docinto ${PN}

		dodoc *.rtf *.pdf || die "dodoc failed"

	fi

	# Setting permissions.

	einfo " Setting permissions ..."

	prepgamesdirs

}

pkg_postinst() {

	ewarn ""

	ewarn "Amnesia: The Dark Descent needs video drivers"

	ewarn "that provide a complete GLSL 1.20 implementation."

	ewarn ""

	ewarn "Please visit \"http://www.frictionalgames.com/forum/thread-3760.html\""

	ewarn "for more infos."

	ewarn ""

	ewarn "--------------------------------------------------------------------"

	ewarn ""

	ewarn "If you was playing version 1.0 you might experience some oddities"

	ewarn "due to save game differences between 1.0 and 1.0.1."

	ewarn ""

}