1 files changed, 157 insertions, 0 deletions
diff --git a/libs/game_bethesda/src/games/starfield/starfieldsavegame.cpp b/libs/game_bethesda/src/games/starfield/starfieldsavegame.cpp
new file mode 100644
index 0000000..49653cb
--- /dev/null
+++ b/libs/game_bethesda/src/games/starfield/starfieldsavegame.cpp
@@ -0,0 +1,157 @@
+#include "starfieldsavegame.h"
+
+#ifdef _WIN32
+#include <Windows.h>
+#else
+#include <QDateTime>
+
+using SYSTEMTIME = _SYSTEMTIME;
+
+static void FileTimeToSystemTime(const FILETIME* ft, SYSTEMTIME* st)
+{
+  const uint64_t ticks = (static_cast<uint64_t>(ft->dwHighDateTime) << 32) |
+                         static_cast<uint64_t>(ft->dwLowDateTime);
+  const int64_t unixSecs = static_cast<int64_t>(ticks / 10000000ULL) - 11644473600LL;
+  const uint64_t remainderHns = ticks % 10000000ULL;
+
+  const QDateTime dt = QDateTime::fromSecsSinceEpoch(unixSecs, Qt::UTC);
+  const QDate d      = dt.date();
+  const 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);
+  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
+
+#include "gamestarfield.h"
+
+StarfieldSaveGame::StarfieldSaveGame(QString const& fileName, GameStarfield const* game)
+    : GamebryoSaveGame(fileName, game, true, true)
+{
+  FileWrapper file(getFilepath(), "BCPS");
+
+  getData(file);
+  FILETIME creationTime;
+  unsigned char saveVersion;
+  fetchInformationFields(file, m_SaveNumber, saveVersion, m_PCName, m_PCLevel,
+                         m_PCLocation, creationTime);
+  file.closeCompressedData();
+  file.close();
+
+  // 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
+  SYSTEMTIME ctime;
+  ::FileTimeToSystemTime(&creationTime, &ctime);
+
+  setCreationTime(ctime);
+}
+
+void StarfieldSaveGame::getData(FileWrapper& file) const
+{
+  file.skip<uint32_t>();  // header version
+  file.skip<uint64_t>();  // chunk compressed size array start location
+  file.skip<uint64_t>();  // unknown (0?)
+  file.setCompressionType(1);
+  /*
+   * Parse following variables then begin decompressing data
+   * - 64-bit int = compressed data start location
+   * - 64-bit int = complete uncompressed data size
+   */
+  file.openCompressedData();
+  /*
+   * Remaining headers before start of compressed data:
+   * - 32-bit float (version? appears to be 2.0)
+   * - 64-bit int - size of uncompressed chunks (250 KiB)
+   * - 64-bit int - size of byte rows? (16 bytes) used to determine start of each
+   *   compressed chunk
+   * - 32-bit int - number of chunks?
+   * - 'ZIP ' - denotes start of chunk compressed size array
+   * - compressed size array - array of 32-bit ints containing the compressed size of
+   *   each compressed chunk (see number of chunks above)
+   */
+}
+
+void StarfieldSaveGame::fetchInformationFields(
+    FileWrapper& file, uint32_t& saveNumber, unsigned char& saveVersion,
+    QString& playerName, unsigned short& playerLevel, QString& playerLocation,
+    FILETIME& creationTime) const
+{
+  char fileID[12];  // SFS_SAVEGAME
+  unsigned int headerSize;
+  unsigned int version;
+  // file.read(fileID, 12);
+  headerSize  = file.readInt(12);
+  version     = file.readInt();
+  saveVersion = file.readChar();
+  saveNumber  = file.readInt();
+  file.read(playerName);
+
+  unsigned int temp;
+  temp        = file.readInt();
+  playerLevel = static_cast<unsigned short>(temp);
+  file.read(playerLocation);
+
+  QString ignore;
+  file.read(ignore);  // playtime as ascii hh.mm.ss
+  file.read(ignore);  // race name (i.e. BretonRace)
+
+  unsigned short gender;
+  gender = file.readShort();  // Player gender (0 = male)
+  float experience, experienceRequired;
+  experience         = file.readFloat();
+  experienceRequired = file.readFloat();
+
+  unsigned long long time     = file.readLong();
+  creationTime.dwLowDateTime  = (DWORD)time;
+  creationTime.dwHighDateTime = time >> 32;
+}
+
+std::unique_ptr<GamebryoSaveGame::DataFields> StarfieldSaveGame::fetchDataFields() const
+{
+  FileWrapper file(getFilepath(), "BCPS");  // 10bytes
+
+  getData(file);
+  FILETIME creationTime;
+  unsigned char saveVersion;
+
+  {
+    QString dummyName, dummyLocation;
+    unsigned short dummyLevel;
+    uint32_t dummySaveNumber;
+    FILETIME dummyTime;
+
+    fetchInformationFields(file, dummySaveNumber, saveVersion, dummyName, dummyLevel,
+                           dummyLocation, dummyTime);
+  }
+
+  int extraInfo = 0;
+  if (saveVersion >= 122)
+    extraInfo = 1;
+  if (saveVersion >= 140)
+    extraInfo = 2;
+  QStringList gamePlugins = m_Game->primaryPlugins() + m_Game->enabledPlugins();
+
+  QString ignore;
+  std::unique_ptr<DataFields> fields = std::make_unique<DataFields>();
+
+  file.readChar(12);
+  file.read(ignore);  // game version
+  file.read(ignore);  // game version again?
+  file.readInt();     // plugin info size
+
+  fields->Plugins      = file.readPlugins(0, extraInfo, gamePlugins);
+  fields->LightPlugins = file.readLightPlugins(0, extraInfo, gamePlugins);
+  if (saveVersion >= 122)
+    fields->MediumPlugins = file.readMediumPlugins(0, extraInfo, gamePlugins);
+  file.closeCompressedData();
+  file.close();
+
+  return fields;
+}