Fluorine Manager: full Linux port of Mod Organizer 2

Complete native Linux port with FUSE-based virtual filesystem,
Proton/umu-run integration, and Flatpak packaging.

Key features:
- FUSE VFS replacing Windows USVFS (in-process + standalone helper for Flatpak)
- Proton/GE-Proton/umu-run launcher with env var forwarding
- Flatpak support (sandbox-aware VFS, NXM handler, umu-run)
- Wine prefix management UI
- Case-insensitive path resolution for Linux filesystems
- QSettings-safe INI handling (avoids Bethesda INI corruption)
- Portable instance support with auto-generated launcher scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/libs/basic_games/games/game_masterduel.py b/libs/basic_games/games/game_masterduel.py
new file mode 100644
index 0000000..8c23512
--- /dev/null
+++ b/libs/basic_games/games/game_masterduel.py
@@ -0,0 +1,89 @@
+from pathlib import Path
+from typing import List, Optional
+
+from PyQt6.QtCore import QDir, QFileInfo
+
+import mobase
+
+from ..basic_game import BasicGame
+
+
+class MasterDuelGame(BasicGame, mobase.IPluginFileMapper):
+    Name = "Yu-Gi-Oh! Master Duel Support Plugin"
+    Author = "The Conceptionist & uwx"
+    Version = "1.0.2"
+    Description = (
+        "Adds support for basic Yu-Gi-Oh! Master Duel mods.\n"
+        'Eligible folders for mods are "0000" and "AssetBundle".'
+    )
+
+    GameName = "Yu-Gi-Oh! Master Duel"
+    GameShortName = "masterduel"
+    GameNexusName = "yugiohmasterduel"
+    GameNexusId = 4272
+    GameSteamId = 1449850
+    GameBinary = "masterduel.exe"
+
+    def __init__(self):
+        BasicGame.__init__(self)
+        mobase.IPluginFileMapper.__init__(self)
+
+    def executables(self):
+        return [
+            mobase.ExecutableInfo(
+                "Yu-Gi-Oh! Master Duel",
+                QFileInfo(self.gameDirectory().absoluteFilePath(self.binaryName())),
+            ).withArgument("-popupwindow"),
+        ]
+
+    # dataDirectory returns the specific LocalData folder because
+    # this is where most mods will go to
+    def dataDirectory(self) -> QDir:
+        return QDir(self.userDataDir())
+
+    _userDataDirCached: Optional[str] = None
+
+    # Gets the LocalData/xxxxxxxxx directory. This directory has a different,
+    # unique, 8-character hex name for each user.
+    def userDataDir(self) -> str:
+        if self._userDataDirCached is not None:
+            return self._userDataDirCached
+
+        dir = self.gameDirectory()
+        dir.cd("LocalData")
+
+        subdirs = dir.entryList(filters=QDir.Filter.Dirs | QDir.Filter.NoDotAndDotDot)
+        dir.cd(subdirs[0])
+
+        self._userDataDirCached = dir.absolutePath()
+        return self._userDataDirCached
+
+    def mappings(self) -> List[mobase.Mapping]:
+        modsPath = Path(self._organizer.modsPath())
+        unityMods = self.getUnityDataMods()
+
+        mappings: List[mobase.Mapping] = []
+
+        for modName in unityMods:
+            m = mobase.Mapping()
+            m.createTarget = False
+            m.isDirectory = True
+            m.source = modsPath.joinpath(modName, "AssetBundle").as_posix()
+            m.destination = self.gameDirectory().filePath(
+                Path("masterduel_Data", "StreamingAssets", "AssetBundle").as_posix()
+            )
+            mappings.append(m)
+
+        return mappings
+
+    def getUnityDataMods(self) -> list[str]:
+        modsPath = Path(self._organizer.modsPath())
+        allMods = self._organizer.modList().allModsByProfilePriority()
+
+        unityMods: list[str] = []
+        for modName in allMods:
+            if self._organizer.modList().state(modName) & mobase.ModState.ACTIVE != 0:
+                if modsPath.joinpath(modName, "AssetBundle").exists():
+                    unityMods.append(modName)
+
+        return unityMods