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{ stdenv, lib, buildGame, fetchItch, makeWrapper, p7zip, unzip, mono50
, SDL2, SDL2_image, libGL, libvorbis, openal
, writeScriptBin, coreutils
, fetchNuGet, writeText
, darkWorldExpansion ? true
}:
let
cecil = fetchNuGet {
baseName = "Mono.Cecil";
version = "0.10-beta7";
sha256 = "03bina3llcnylrfrvp5psnwrfn757j7zch5r360rpdn7gmcjjcpl";
outputFiles = [ "lib/net40/*" ];
};
# We need to patch a few occurences of System.IO.FileStream which are used
# with the default arguments for FileAccess. The defaults open the file in
# read-write mode and given that all the game data files are in the read-only
# Nix store, we'd get an UnauthorizedAccessException.
patcher = writeText "patcher.cs" ''
using System.Linq;
using System.Collections.Generic;
using Mono.Cecil;
using Mono.Cecil.Cil;
using Mono.Cecil.Rocks;
public class patcher {
private ModuleDefinition module;
private patcher(List<string> typesToPatch) {
this.module = ModuleDefinition.ReadModule("TowerFall.exe");
var filtered = this.module.Types
.Where(p => typesToPatch.Contains(p.Name));
foreach (var toPatch in filtered) {
patch_class(toPatch);
}
this.module.Write("TowerFallPatched.exe");
}
private void patch_method(MethodDefinition md) {
var il = md.Body.GetILProcessor();
var fileStreams = md.Body.Instructions
.Where(i => i.OpCode == OpCodes.Newobj)
.Where(i => (i.Operand as MethodReference).DeclaringType
.FullName == "System.IO.FileStream");
foreach (Instruction i in fileStreams.ToList()) {
var fileAccessRead = il.Create(OpCodes.Ldc_I4_1);
il.InsertBefore(i, fileAccessRead);
var ctorType = this.module.AssemblyReferences.Select(
x => new {
type = this.module.AssemblyResolver.Resolve(x)
.MainModule.GetType("System.IO.FileStream")
}
).Where(x => x.type != null).Select(x => x.type).First();
string wantedCtor = "System.Void System.IO.FileStream"
+ "::.ctor(System.String,"
+ "System.IO.FileMode,"
+ "System.IO.FileAccess)";
var newCtor = ctorType.GetConstructors()
.Single(x => x.ToString() == wantedCtor);
var refCtor = this.module.ImportReference(newCtor);
il.Replace(i, il.Create(OpCodes.Newobj, refCtor));
}
}
private void patch_class(TypeDefinition td) {
foreach (var nested in td.NestedTypes) patch_class(nested);
foreach (MethodDefinition md in td.Methods) patch_method(md);
}
public static void Main() {
var typesToPatch = new List<string>() {
"Texture", "IntroScene", "SFX", "SFXVaried"
};
new patcher(typesToPatch);
}
}
'';
in buildGame rec {
name = "towerfall-ascension-${version}";
version = "20160723";
srcs = lib.singleton (fetchItch {
name = "${name}.bin";
gameId = 22755;
uploadId = 243755;
sha256 = "01ipq3z0c2k4h88r7j17nfp43p5sav12a9syangqm0syflvwqxb6";
}) ++ lib.optional darkWorldExpansion (fetchItch {
name = "towerfall-darkworld.zip";
gameId = 24962;
uploadId = 216070;
sha256 = "1nb26m2l74rsnlwv9mv33l2s5n873867k9zypc84sm3iljvrdkmg";
});
unpackCmd = ''
case "$curSrc" in
*.bin) ${p7zip}/bin/7z x "$curSrc" data;;
*.zip) ${unzip}/bin/unzip -qq "$curSrc" -d data;;
*) false;;
esac
'';
patchPhase = ''
{ export MONO_PATH=${cecil}/lib/dotnet/Mono.Cecil
mcs ${lib.escapeShellArg patcher} -out:patcher \
-lib:${cecil}/lib/dotnet/Mono.Cecil \
-r:Mono.Cecil -r:Mono.Cecil.Rocks
mono patcher
mv TowerFallPatched.exe TowerFall.exe
}
'';
nativeBuildInputs = [ makeWrapper mono50 ];
libdir = if stdenv.system == "x86_64-linux" then "lib64" else "lib";
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 = "$out/libexec/towerfall-ascension/libmojoshader.so";
};
in lib.concatStrings (lib.mapAttrsToList (dll: target: ''
sed -i -e '/<dllmap.*dll="${dll}\.dll".*os="linux"/ {
s!target="[^"]*"!target="'"${target}"'"!
}' FNA.dll.config
'') dllmap);
dummyXdgOpen = writeScriptBin "xdg-open" ''
#!${stdenv.shell} -e
if [ "''${1##*.}" = txt ]; then
exec ${coreutils}/bin/head -v -n 20 "$1"
else
echo "Unable to open file $1" >&2
exit 1
fi
'';
installPhase = ''
mkdir -p "$out/bin" \
"$out/share/towerfall-ascension" \
"$out/libexec/towerfall-ascension"
cp -rvt "$out/share/towerfall-ascension" Content
cp -rv mono/config "$out/libexec/towerfall-ascension/TowerFall.exe.config"
cp -rvt "$out/libexec/towerfall-ascension" TowerFall.exe FNA.dll* \
"$libdir/libmojoshader.so"
ln -s "$out/share/towerfall-ascension/Content" \
"$out/libexec/towerfall-ascension/Content"
if [ -e "TowerFall Dark World Expansion" ]; then
cp -rvt "$out/share/towerfall-ascension" \
"TowerFall Dark World Expansion/DarkWorldContent"
fi
makeWrapper ${lib.escapeShellArg mono50}/bin/mono \
"$out/bin/towerfall-ascension" \
--set SDL_OPENGL_LIBRARY ${lib.escapeShellArg "${libGL}/lib/libGL.so"} \
--set PATH "$dummyXdgOpen/bin" \
--add-flags "$out/libexec/towerfall-ascension/TowerFall.exe" \
--run "cd '$out/share/towerfall-ascension'"
'';
sandbox.paths.required = [ "$XDG_DATA_HOME/TowerFall" ];
}
|
