Add nxengine

satellites/extrafiles/nxengine/nxengine.desktop

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+[Desktop Entry]
+Type=Application
+Name=NXEngine (Cave Story)
+Comment=A clone/engine-rewrite of the classic jump-and-run platformer Cave Story/Doukutsu Monogatari
+Exec=nxengine
+Icon=nxengine
+Terminal=false
+Categories=Game;AdventureGame;

satellites/extrafiles/nxengine/nxengine.sh

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+#!/bin/sh -e
+
+dir_prefix="%PREFIX%"
+dir_runtime="%RUNTIME%"
+
+files="
+    lib/nxengine/nx
+    share/nxengine/font.ttf
+    share/nxengine/smalfont.bmp
+    share/nxengine/sprites.sif
+    share/nxengine/tilekey.dat
+    share/nxengine/Doukutsu.exe
+    share/nxengine/data
+"
+
+mkdir -p "$dir_runtime"
+
+for file in $files; do
+    [ ! -L "$dir_runtime/$(basename "$file")" ] && ln -sf -t "$dir_runtime" "$dir_prefix/$file"
+done
+
+cd "$dir_runtime" && ./nx

satellites/nxengine.sat

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+name=nxengine
+version=1006
+update_url="http://nxengine.sourceforge.net/"
+
+dlextract "http://nxengine.sourceforge.net/dl/nx-src-$version.tar.bz2" \
+          "cc0d1f5608bba70df86a6f5a3b4dd3bd"
+download "http://www.cavestory.org/downloads/cavestoryen.zip" \
+         "5aad47f1cb72185d6e7f4c8c392f6b6e"
+
+extrafile "nxengine.sh"
+extrafile "nxengine.desktop"
+extrafile "nxengine.png"
+header_end
+
+extract "cavestoryen.zip" '' "unzip -qd {dst} {src}"
+
+# Some keyboards don't have an accessible backtick.
+console_key="$(safe_sed $(option console_key=\`))"
+sed -i -e "s/\`/$console_key/" nx/input.cpp
+sed -i -e "s/\`/$console_key/" nx/console.cpp
+
+# Allow custom CFLAGS to the Makefile
+sed -i -e '/g++/s/-o/$(CFLAGS) -o/g' nx/Makefile
+
+# Build the nx executable
+make -C nx
+
+# Install the nxengine executable
+install -Dm755 nx/nx "$dir_install/$dir_prefix/lib/nxengine/nx"
+
+# Install the necessary data
+mkdir -p "$dir_install/$dir_prefix/share/nxengine"
+install -m644 nx/font.ttf nx/smalfont.bmp nx/sprites.sif nx/tilekey.dat CaveStory/Doukutsu.exe "$dir_install/$dir_prefix/share/nxengine/"
+cp -r CaveStory/data "$dir_install/$dir_prefix/share/nxengine/data"
+
+# Install the run script
+# Where the files will be copied to on runtime.
+dir_runtime="$(option dir_runtime=\$HOME/.nxengine)"
+sed -i -e "s/%PREFIX%/$(safe_sed "$dir_prefix")/" \
+       -e "s/%RUNTIME%/$(safe_sed "$dir_runtime")/" \
+       nxengine.sh
+install -Dm755 nxengine.sh "$dir_install/$dir_prefix/bin/nxengine"
+
+# Install desktop file and icon
+install -Dm644 nxengine.png "$dir_install/$dir_prefix/share/pixmaps/nxengine.png"
+install -Dm644 nxengine.desktop "$dir_install/$dir_prefix/share/applications/nxengine.desktop"
+
+# vim:set tabstop=4 shiftwidth=4 syntax=sh et: