1 files changed, 102 insertions, 0 deletions
diff --git a/pkgs/games/humblebundle/owlboy.nix b/pkgs/games/humblebundle/owlboy.nix
new file mode 100644
index 00000000..a6c42577
--- /dev/null
+++ b/pkgs/games/humblebundle/owlboy.nix
@@ -0,0 +1,102 @@
+{ stdenv, lib, buildGame, fetchHumbleBundle, unzip, makeWrapper, mono50
+, SDL2, SDL2_image, openal, libvorbis
+, writeText
+}:
+
+buildGame rec {
+  name = "owlboy-${version}";
+  version = "20171229";
+
+  src = fetchHumbleBundle {
+    suffix = "bin";
+    machineName = "owlboy_linux";
+    md5 = "c2e99502013c7d2529bc2aefb6416dcf";
+  };
+
+  unpackCmd = "${unzip}/bin/unzip -qq \"$curSrc\" 'data/*' || :";
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  libdir = if stdenv.system == "x86_64-linux" then "lib64" else "lib";
+
+  prePatch = ''
+    find -type f -name '*.ini' -exec sed -i -e 's/${"\r"}$//' {} +
+  '';
+
+  buildPhase = let
+    dllmap = {
+      SDL2 = "${SDL2}/lib/libSDL2.so";
+      SDL2_image = "${SDL2_image}/lib/libSDL2_image.so";
+      soft_oal = "${openal}/lib/libopenal.so";
+      libvorbisfile-3 = "${libvorbis}/lib/libvorbisfile.so";
+      MojoShader = "$out/lib/owlboy/libmojoshader.so";
+    };
+  in ''
+    cc -Werror -shared "$preloader" -o preloader.so -ldl -fPIC \
+      -DSTOREPATH=\"$out\"
+  '' + lib.concatStrings (lib.mapAttrsToList (dll: target: ''
+    sed -i -e '/<dllmap.*dll="${dll}\.dll".*os="linux"/ {
+      s!target="[^"]*"!target="'"${target}"'"!
+    }' FNA.dll.config
+  '') dllmap);
+
+  # The game tries to open data files in read-write mode, so use LD_PRELOAD to
+  # avoid this whenever a store path is involved.
+  preloader = writeText "owlboy-preloader.c" ''
+    #define _GNU_SOURCE
+    #include <dlfcn.h>
+    #include <fcntl.h>
+    #include <stdarg.h>
+    #include <stdio.h>
+    #include <stdbool.h>
+    #include <string.h>
+    #include <sys/stat.h>
+
+    static bool isDataPath(const char *path) {
+      return strncmp(path, "content/", 8) == 0
+          || strncmp(path, STOREPATH, sizeof(STOREPATH) - 1) == 0;
+    }
+
+    int access(const char *path, int mode) {
+      static int (*_access) (const char *, int) = NULL;
+      if (_access == NULL) _access = dlsym(RTLD_NEXT, "access");
+      if (isDataPath(path) && mode & W_OK)
+        mode = mode & ~W_OK | R_OK;
+      return _access(path, mode);
+    }
+
+    int open(const char *path, int flags, ...) {
+      va_list ap;
+      mode_t mode;
+      static int (*_open) (const char *, int, mode_t) = NULL;
+      if (_open == NULL) _open = dlsym(RTLD_NEXT, "open");
+      va_start(ap, flags);
+      mode = va_arg(ap, mode_t);
+      va_end(ap);
+      if (isDataPath(path) && flags & O_RDWR)
+        flags = flags & ~O_RDWR | O_RDONLY;
+      return _open(path, flags, mode);
+    }
+  '';
+
+  installPhase = ''
+    mkdir -p "$out/bin" "$out/share" "$out/libexec/owlboy"
+    install -vD preloader.so "$out/lib/owlboy/preloader.so"
+    cp -rv content "$out/share/owlboy"
+    cp -rv monoconfig "$out/libexec/owlboy/Owlboy.exe.config"
+    cp -rvt "$out/libexec/owlboy" Owlboy.exe \
+      FNA.dll* GamedevUtility.dll MoonSharp.Interpreter.dll TimSort.dll
+    cp -rvt "$out/lib/owlboy" "$libdir/libmojoshader.so"
+    ln -vs "$out/share/owlboy" "$out/libexec/owlboy/content"
+
+    makeWrapper ${lib.escapeShellArg mono50}/bin/mono \
+      "$out/bin/owlboy" \
+      --set LD_PRELOAD "$out/lib/owlboy/preloader.so" \
+      --add-flags "$out/libexec/owlboy/Owlboy.exe" \
+      --run "cd '$out/libexec/owlboy'"
+  '';
+
+  sandbox.paths.required = [
+    "$XDG_DATA_HOME/Owlboy" "$XDG_CONFIG_HOME/Owlboy"
+  ];
+}