#!/bin/bash

# Slackware build script for acidwarp

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

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

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

PRGNAM=acidwarp
VERSION=${VERSION:-4.10+20221127_cf5e52f}
COMMIT=${COMMIT:-cf5e52ff7793df1cb2dffaf693b672b66cca3049}
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 $PRGNAM-$COMMIT
tar xvf $CWD/$PRGNAM-$COMMIT.tar.gz
cd $PRGNAM-$COMMIT
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 {} +

# Build with SDL2 and OpenGL by default. OpenGL builds are only possible
# with SDL2.
if [ "${SDL2:-yes}" = "no" ]; then
  SDLOPT="-DSDL2=OFF"
  GL="${GL:-no}"
else
  SDLOPT="-DSDL2=ON"
fi

if [ "${GL:-yes}" = "no" ]; then
  GLOPT="-DGL=OFF"
else
  GLOPT="-DGL=ON -DCMAKE_EXE_LINKER_FLAGS=-lGL"
fi

echo "===> SDLOPT: $SDLOPT"
echo "===> GLOPT:  $GLOPT"

mkdir -p build
cd build
  cmake \
    $SDLOPT $GLOPT \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_BUILD_TYPE=Release ..
  make VERBOSE=1
cd ..

# no make install target, do it the hard way.
install -D -m755 -s bin/$PRGNAM $PKG/usr/games/$PRGNAM

mkdir -p $PKG/usr/share/{applications,pixmaps}

# acidwarp.desktop is slightly modified from upstream.
# acidwarp-fs.desktop makes it run fullscreen, since the window size
# comes out smaller than a pack of smokes on a modern-ish display (or
# postage-stamp-sized, on 4k).
for i in acidwarp acidwarp-fs; do
  cat $CWD/$i.desktop > $PKG/usr/share/applications/$i.desktop
done

for px in 32 48 64 256; do
  sz=${px}x${px}
  dir=$PKG/usr/share/icons/hicolor/$sz/apps
  mkdir -p $dir
  convert -resize $sz $PRGNAM.png $dir/$PRGNAM.png
done

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

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

objdump -p bin/$PRGNAM | grep NEEDED > tmp
SDLVER=1.2; RENDER=software
grep -q libSDL2 tmp && SDLVER=2.0
grep -q libGL   tmp && RENDER=OpenGL

mkdir -p $PKG/install
sed -e "s,@SDLVER@,$SDLVER," -e "s,@RENDER@,$RENDER," \
    < $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