#!/bin/bash

# Slackware build script for xtetris

# Written by B. Watson (urchlay@slackware.uk)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# This is an ancient game. It used to be in Slackware, but got
# removed between 3.2 and 3.3, due to legal threats. These days,
# Slackware includes at least one tetris game (kblocks) and SBo has
# dozens of them, and nobody's threatening to sue... really this is
# of historical interest only. It does have one interesting feature
# I've never seen in another tetris game, which is the 'guide' at the
# bottom of the playing field. IMO, it makes the game a bit too easy.
# Also, the -bw mode might tickle someone's Mac Classic fancy (the Mac
# isn't a nostalgia platform for me, but it is for a lot of folks).

# The Slackware 3.2 source dir for this includes xtetris-quayle.patch,
# but the source tarball already has the patch applied, so it's not
# needed here.

# This SlackBuild is new code based on SBo template. I might have
# tried to use Pat V's ancient build script for Slackware 3.2 as a
# basis, but I couldn't find it.

# I had to patch the game a bit to get it to work properly on modern
# Slackware... but surprisingly, not all that much.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=xtetris
VERSION=${VERSION:-2.6}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
else
  SLKCFLAGS="-O2"
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod -h 755 {} + -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod -h 644 {} +

# Fix paths in man page FILES section.
patch -p1 < $CWD/patches/manpage.diff

# High score file is fixed-width columns. If the local hostname is longer
# than 12 characters, the layout gets messed up, and next time you run
# the game, the high scores won't display.
# Patch truncates the hostname to 12 chars or the first . (so, use the
# short hostname, not the FQDN).
# Sorta silly to keep the hostname in the score file anyway. It
# probably originated on a network full of diskless workstations,
# where the highscore file was shared via NFS.
patch -p1 < $CWD/patches/score_hostname.diff

# This patch makes everything in the left pane a bit wider, otherwise
# the text (score, button labels, etc) gets cut off. Probably this is
# due to changes in how X renders fonts, over the last 30+ years.
patch -p1 < $CWD/patches/layout.diff

# This one does two things:
# 1. Enable the window manager close button. It'll do the same thing the
#    Quit button in the UI does.
# 2. Prevent the user from resizing the window. The game looks weird
#    when resized, and even restoring the original size causes the pieces
#    that were already placed in the "well" to disappear.
patch -p1 < $CWD/patches/close_button_no_resize.diff

# Don't run xrdb to generate the *.ad files. It fails if there's no
# X server running, or if it's running but root can't connect to it.
# To generate the *.ad files, run this script with MAKE_AD=yes in
# the env, and you probably have to run "xhost +localhost" and
# make sure DISPLAY=:0 is in the script's env, too. Then copy
# the files from $PKG/etc/X11/app-defaults to the script dir and
# commit them. Nobody but me should ever have to do that.
if [ "${MAKE_AD:-no}" != "yes" ]; then
  cat $CWD/app-defaults/Xtetris.bw > Xtetris.bw.ad
  cat $CWD/app-defaults/Xtetris.c  | tee Xtetris.c.ad Xtetris.ad >/dev/null
fi

# LIBDIR=/var/games/$PRGNAM seems weird, but the only thing xtetris
# uses LIBDIR for is the high score file.
# INCDIR is where the bitmaps/ dir lives, for the stripe4 bitmap that
# it loads at runtime.
xmkmf -a
make all install install.man \
  CCOPTIONS="$SLKCFLAGS -fcommon" \
  BINDIR=/usr/games \
  LIBDIR=/var/games/$PRGNAM \
  INCDIR=/usr/include/X11 \
  INSTPGMFLAGS="-s" \
  DESTDIR=$PKG

gzip -9 $PKG/usr/man/man*/*

# Don't need in package:
rm -f $PKG/var/games/$PRGNAM/app-defaults

# Make -color the default. No need to patch the code!
cd $PKG/etc/X11/app-defaults
rm -f Xtetris
ln -s Xtetris.c Xtetris
cd -

# Run setgid games, so we can write to the global high score file.
chown root:games $PKG/usr/games/$PRGNAM
chmod 2755 $PKG/usr/games/$PRGNAM

# Set permissions on high score file and its dir.
# I made this a .new config file, but sbopkg won't prompt for it
# because it's not in /etc. No harm done, it's a tiny file.
cd $PKG/var/games/$PRGNAM
mv xtetris-scores xtetris-scores.new
chown games:games . *
chmod 775 .
chmod 664 xtetris-scores.new
cd -

# Icons made from a screenshot of the game. If you're a better graphic
# designer than me (and you almost certainly *are*), please make a
# better icon and send it to me!
for i in $CWD/icons/*.png; do
  px="$( basename $i .png )"
  sz=${px}x${px}
  dir=$PKG/usr/share/icons/hicolor/$sz/apps
  mkdir -p $dir
  cat $i > $dir/$PRGNAM.png
done

mkdir -p $PKG/usr/share/pixmaps
ln -s ../icons/hicolor/48x48/apps/$PRGNAM.png $PKG/usr/share/pixmaps/$PRGNAM.png

# .desktop file written from scratch.
mkdir -p $PKG/usr/share/applications
cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop

PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKGDOC
cp -a COPYRIGHT README TODO $PKGDOC
cat $CWD/$PRGNAM.SlackBuild > $PKGDOC/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE