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, 100 insertions, 0 deletions

diff --git a/libs/basic_games/games/game_mountandblade2.py b/libs/basic_games/games/game_mountandblade2.py
new file mode 100644
index 0000000..df2c157
--- /dev/null
+++ b/libs/basic_games/games/game_mountandblade2.py
@@ -0,0 +1,100 @@
+from pathlib import Path
+
+from PyQt6.QtCore import QDir, QFileInfo
+
+import mobase
+
+from ..basic_features import BasicLocalSavegames
+from ..basic_game import BasicGame, BasicGameSaveGame
+
+
+class MountAndBladeIIModDataChecker(mobase.ModDataChecker):
+    _valid_folders: list[str] = [
+        "native",
+        "sandbox",
+        "sandboxcore",
+        "storymode",
+        "custombattle",
+    ]
+
+    def __init__(self):
+        super().__init__()
+
+    def dataLooksValid(
+        self, filetree: mobase.IFileTree
+    ) -> mobase.ModDataChecker.CheckReturn:
+        for e in filetree:
+            if e.isDir():
+                if e.name().lower() in self._valid_folders:
+                    return mobase.ModDataChecker.VALID
+                if e.exists("SubModule.xml", mobase.IFileTree.FILE):  # type: ignore
+                    return mobase.ModDataChecker.VALID
+
+        return mobase.ModDataChecker.INVALID
+
+
+class MountAndBladeIIGame(BasicGame):
+    Name = "Mount & Blade II: Bannerlord"
+    Author = "Holt59"
+    Version = "0.1.1"
+    Description = "Adds support for Mount & Blade II: Bannerlord"
+
+    GameName = "Mount & Blade II: Bannerlord"
+    GameShortName = "mountandblade2bannerlord"
+    GameDataPath = "Modules"
+    GameSupportURL = (
+        r"https://github.com/ModOrganizer2/modorganizer-basic_games/wiki/"
+        "Game:-Mount-&-Blade-II:-Bannerlord"
+    )
+
+    GameBinary = "bin/Win64_Shipping_Client/TaleWorlds.MountAndBlade.Launcher.exe"
+
+    GameDocumentsDirectory = "%DOCUMENTS%/Mount and Blade II Bannerlord/Configs"
+    GameSavesDirectory = "%DOCUMENTS%/Mount and Blade II Bannerlord/Game Saves"
+
+    GameNexusId = 3174
+    GameSteamId = 261550
+
+    def init(self, organizer: mobase.IOrganizer):
+        super().init(organizer)
+        self._register_feature(MountAndBladeIIModDataChecker())
+        self._register_feature(BasicLocalSavegames(self))
+        return True
+
+    def listSaves(self, folder: QDir) -> list[mobase.ISaveGame]:
+        save_paths = list(Path(folder.absolutePath()).glob("*.sav")) + list(
+            Path(folder.absolutePath()).glob("*.sav.cleaner_backup_*")
+        )
+        return [BasicGameSaveGame(path) for path in save_paths]
+
+    def executables(self):
+        return [
+            mobase.ExecutableInfo(
+                "Mount & Blade II: Bannerlord (Launcher)",
+                QFileInfo(
+                    self.gameDirectory(),
+                    "bin/Win64_Shipping_Client/TaleWorlds.MountAndBlade.Launcher.exe",
+                ),
+            ),
+            mobase.ExecutableInfo(
+                "Mount & Blade II: Bannerlord",
+                QFileInfo(
+                    self.gameDirectory(),
+                    "bin/Win64_Shipping_Client/Bannerlord.exe",
+                ),
+            ),
+            mobase.ExecutableInfo(
+                "Mount & Blade II: Bannerlord (Native)",
+                QFileInfo(
+                    self.gameDirectory(),
+                    "bin/Win64_Shipping_Client/Bannerlord.Native.exe",
+                ),
+            ),
+            mobase.ExecutableInfo(
+                "Mount & Blade II: Bannerlord (BE)",
+                QFileInfo(
+                    self.gameDirectory(),
+                    "bin/Win64_Shipping_Client/Bannerlord_BE.exe",
+                ),
+            ),
+        ]