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, 72 insertions, 0 deletions

diff --git a/libs/basic_games/games/game_gta-3-de.py b/libs/basic_games/games/game_gta-3-de.py
new file mode 100644
index 0000000..c9fc338
--- /dev/null
+++ b/libs/basic_games/games/game_gta-3-de.py
@@ -0,0 +1,72 @@
+import os
+from pathlib import Path
+
+from PyQt6.QtCore import QDir, QFileInfo
+
+import mobase
+
+from ..basic_game import BasicGame
+
+
+class GTA3DefinitiveEditionModDataChecker(mobase.ModDataChecker):
+    def __init__(self):
+        super().__init__()
+
+    def dataLooksValid(
+        self, filetree: mobase.IFileTree
+    ) -> mobase.ModDataChecker.CheckReturn:
+        for entry in filetree:
+            if Path(entry.name().casefold()).suffix == ".pak":
+                return mobase.ModDataChecker.VALID
+
+        return mobase.ModDataChecker.INVALID
+
+
+class GTA3DefinitiveEditionGame(BasicGame):
+    Name = "Grand Theft Auto III - Definitive Edition Support Plugin"
+    Author = "dekart811"
+    Version = "1.0"
+
+    GameName = "GTA III - Definitive Edition"
+    GameShortName = "grandtheftautothetrilogy"
+    GameNexusName = "grandtheftautothetrilogy"
+    GameBinary = "Gameface/Binaries/Win64/LibertyCity.exe"
+    GameDataPath = "Gameface/Content/Paks/~mods"
+    GameDocumentsDirectory = (
+        "%USERPROFILE%/Documents/Rockstar Games/"
+        "GTA III Definitive Edition/Config/WindowsNoEditor"
+    )
+    GameSavesDirectory = "%GAME_DOCUMENTS%/../../SaveGames"
+    GameSaveExtension = "sav"
+    GameSupportURL = (
+        r"https://github.com/ModOrganizer2/modorganizer-basic_games/wiki/"
+        "Game:-Grand-Theft-Auto:-The-Trilogy-%E2%80%90-The-Definitive-Edition"
+    )
+
+    def init(self, organizer: mobase.IOrganizer) -> bool:
+        super().init(organizer)
+        self._register_feature(GTA3DefinitiveEditionModDataChecker())
+        return True
+
+    def executables(self):
+        return [
+            mobase.ExecutableInfo(
+                "GTA III - Definitive Edition",
+                QFileInfo(self.gameDirectory().absoluteFilePath(self.binaryName())),
+            ),
+            mobase.ExecutableInfo(
+                "GTA III - Definitive Edition (DirectX 12)",
+                QFileInfo(self.gameDirectory().absoluteFilePath(self.binaryName())),
+            ).withArgument("-dx12"),
+        ]
+
+    def iniFiles(self):
+        return ["GameUserSettings.ini", "CustomSettings.ini"]
+
+    def initializeProfile(self, directory: QDir, settings: mobase.ProfileSetting):
+        # Create the mods directory if it doesn't exist
+        modsPath = self.dataDirectory().absolutePath()
+        if not os.path.exists(modsPath):
+            os.mkdir(modsPath)
+
+        super().initializeProfile(directory, settings)