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, 157 insertions, 0 deletions

diff --git a/libs/game_bethesda/src/games/skyrimse/skyrimsesavegame.cpp b/libs/game_bethesda/src/games/skyrimse/skyrimsesavegame.cpp
new file mode 100644
index 0000000..d68ba19
--- /dev/null
+++ b/libs/game_bethesda/src/games/skyrimse/skyrimsesavegame.cpp
@@ -0,0 +1,157 @@
+#include "skyrimsesavegame.h"
+
+#ifdef _WIN32
+#include <Windows.h>
+#else
+#include <QDateTime>
+
+// Windows ULARGE_INTEGER union for 64-bit FILETIME math
+union _ULARGE_INTEGER {
+  struct {
+    uint32_t LowPart;
+    uint32_t HighPart;
+  };
+  uint64_t QuadPart;
+};
+
+// SYSTEMTIME is _SYSTEMTIME (defined in gamebryosavegame.h for Linux)
+using SYSTEMTIME = _SYSTEMTIME;
+
+// Portable FileTimeToSystemTime: converts Windows FILETIME to SYSTEMTIME
+// FILETIME = 100ns intervals since Jan 1, 1601 UTC
+static void FileTimeToSystemTime(const FILETIME* ft, SYSTEMTIME* st)
+{
+  _ULARGE_INTEGER ull;
+  ull.LowPart  = ft->dwLowDateTime;
+  ull.HighPart = ft->dwHighDateTime;
+
+  // 11644473600 seconds between 1601-01-01 and 1970-01-01 epochs
+  int64_t unixSecs = static_cast<int64_t>(ull.QuadPart / 10000000ULL) - 11644473600LL;
+  uint64_t remainderHns = ull.QuadPart % 10000000ULL;  // leftover 100ns units
+
+  QDateTime dt = QDateTime::fromSecsSinceEpoch(unixSecs, Qt::UTC);
+  QDate d      = dt.date();
+  QTime t      = dt.time();
+
+  st->wYear         = static_cast<uint16_t>(d.year());
+  st->wMonth        = static_cast<uint16_t>(d.month());
+  st->wDayOfWeek    = static_cast<uint16_t>(d.dayOfWeek() % 7);  // Qt Mon=1..Sun=7 → Win Sun=0..Sat=6
+  st->wDay          = static_cast<uint16_t>(d.day());
+  st->wHour         = static_cast<uint16_t>(t.hour());
+  st->wMinute       = static_cast<uint16_t>(t.minute());
+  st->wSecond       = static_cast<uint16_t>(t.second());
+  st->wMilliseconds = static_cast<uint16_t>(remainderHns / 10000);
+}
+#endif
+
+SkyrimSESaveGame::SkyrimSESaveGame(QString const& fileName, GameSkyrimSE const* game)
+    : GamebryoSaveGame(fileName, game, true)
+{
+  FileWrapper file(fileName, "TESV_SAVEGAME");  // 10bytes
+
+  uint32_t version;
+  FILETIME ftime;
+  fetchInformationFields(file, version, m_PCName, m_PCLevel, m_PCLocation, m_SaveNumber,
+                         ftime);
+
+  // A file time is a 64-bit value that represents the number of 100-nanosecond
+  // intervals that have elapsed since 12:00 A.M. January 1, 1601 Coordinated Universal
+  // Time (UTC). So we need to convert that to something useful
+
+  // For some reason, the file time is off by about 6 hours.
+  // So we need to subtract those 6 hours from the filetime.
+  _ULARGE_INTEGER time;
+  time.LowPart  = ftime.dwLowDateTime;
+  time.HighPart = ftime.dwHighDateTime;
+  time.QuadPart -= 216000000000ULL;  // 6 hours in 100ns intervals
+  ftime.dwHighDateTime = time.HighPart;
+  ftime.dwLowDateTime  = time.LowPart;
+
+  SYSTEMTIME ctime;
+  ::FileTimeToSystemTime(&ftime, &ctime);
+
+  setCreationTime(ctime);
+}
+
+void SkyrimSESaveGame::fetchInformationFields(FileWrapper& file, uint32_t& version,
+                                              QString& playerName,
+                                              unsigned short& playerLevel,
+                                              QString& playerLocation,
+                                              uint32_t& saveNumber,
+                                              FILETIME& creationTime) const
+{
+  uint32_t headerSize;
+  file.read(headerSize);  // header size "TESV_SAVEGAME"
+  file.read(version);
+  file.read(saveNumber);
+  file.read(playerName);
+
+  uint32_t temp;
+  file.read(temp);
+  playerLevel = static_cast<unsigned short>(temp);
+  file.read(playerLocation);
+
+  QString timeOfDay;
+  file.read(timeOfDay);
+
+  QString race;
+  file.read(race);  // race name (i.e. BretonRace)
+
+  file.skip<unsigned short>();  // Player gender (0 = male)
+  file.skip<float>(2);          // experience gathered, experience required
+
+  file.read(creationTime);  // filetime
+}
+
+std::unique_ptr<GamebryoSaveGame::DataFields> SkyrimSESaveGame::fetchDataFields() const
+{
+  FileWrapper file(getFilepath(), "TESV_SAVEGAME");  // 10bytes
+
+  uint32_t version = 0;
+  {
+    QString dummyName, dummyLocation;
+    unsigned short dummyLevel;
+    uint32_t dummySaveNumber;
+    FILETIME dummyTime;
+
+    fetchInformationFields(file, version, dummyName, dummyLevel, dummyLocation,
+                           dummySaveNumber, dummyTime);
+  }
+
+  std::unique_ptr<DataFields> fields = std::make_unique<DataFields>();
+
+  uint32_t width;
+  uint32_t height;
+  file.read(width);
+  file.read(height);
+
+  bool alpha = false;
+
+  // compatibility between LE and SE:
+  //  SE has an additional uin16_t for compression
+  //  SE uses an alpha channel, whereas LE does not
+  uint16_t compressionType = 0;
+  if (version == 12) {
+    file.read(compressionType);
+    alpha = true;
+  }
+
+  fields->Screenshot = file.readImage(width, height, 320, alpha);
+
+  file.setCompressionType(compressionType);
+  file.openCompressedData();
+
+  uint8_t saveGameVersion = file.readChar();
+  uint8_t pluginInfoSize  = file.readChar();
+  uint16_t other          = file.readShort();  // Unknown
+
+  fields->Plugins = file.readPlugins(1);  // Just empty data
+
+  if (saveGameVersion >= 78) {
+    fields->LightPlugins = file.readLightPlugins();
+  }
+
+  file.closeCompressedData();
+
+  return fields;
+}