static byte *readSavegameThumbnail(const Common::String &filename, uint &fileSize, bool &isPNG) {
byte *pFileData;
Common::SaveFileManager *sfm = g_system->getSavefileManager();
Common::InSaveFile *file = sfm->openForLoading(lastPathComponent(filename, '/'));
if (!file)
error("Save file \"%s\" could not be loaded.", filename.c_str());
// Seek to the actual PNG image
loadString(*file); // Marker (BS25SAVEGAME)
Common::String storedVersionID = loadString(*file); // Version
if (storedVersionID != "SCUMMVM1")
loadString(*file);
loadString(*file); // Description
uint32 compressedGamedataSize = atoi(loadString(*file).c_str());
loadString(*file); // Uncompressed game data size
file->skip(compressedGamedataSize); // Skip the game data and move to the thumbnail itself
uint32 thumbnailStart = file->pos();
fileSize = file->size() - thumbnailStart;
// Check if the thumbnail is in our own format, or a PNG file.
uint32 header = file->readUint32BE();
isPNG = (header != MKTAG('S','C','R','N'));
file->seek(-4, SEEK_CUR);
pFileData = new byte[fileSize];
file->read(pFileData, fileSize);
delete file;
return pFileData;
}
SaveStateList WageMetaEngine::listSaves(const char *target) const {
const uint32 WAGEflag = MKTAG('W','A','G','E');
Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
Common::StringArray filenames;
char saveDesc[128] = {0};
Common::String pattern = target;
pattern += ".###";
filenames = saveFileMan->listSavefiles(pattern);
SaveStateList saveList;
for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
// Obtain the last 3 digits of the filename, since they correspond to the save slot
int slotNum = atoi(file->c_str() + file->size() - 3);
if (slotNum >= 0 && slotNum <= 999) {
Common::InSaveFile *in = saveFileMan->openForLoading(*file);
if (in) {
saveDesc[0] = 0;
in->seek(in->size() - 8);
uint32 offset = in->readUint32BE();
uint32 type = in->readUint32BE();
if (type == WAGEflag) {
in->seek(offset);
type = in->readUint32BE();
if (type == WAGEflag) {
in->read(saveDesc, 127);
}
}
saveList.push_back(SaveStateDescriptor(slotNum, saveDesc));
delete in;
}
}
}
// Sort saves based on slot number.
Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
return saveList;
}
/**
* DoRestore
*/
static bool DoRestore() {
Common::InSaveFile *f = _vm->getSaveFileMan()->openForLoading(g_savedFiles[g_RestoreGameNumber].name);
if (f == NULL) {
return false;
}
Common::Serializer s(f, 0);
SaveGameHeader hdr;
if (!syncSaveGameHeader(s, hdr)) {
delete f; // Invalid header, or savegame too new -> skip it
return false;
}
// Load in the data. For older savegame versions, we potentially need to load the data twice, once
// for pre 1.5 savegames, and if that fails, a second time for 1.5 savegames
int numInterpreters = hdr.numInterpreters;
int32 currentPos = f->pos();
for (int tryNumber = 0; tryNumber < ((hdr.ver >= 2) ? 1 : 2); ++tryNumber) {
// If it's the second loop iteration, try with the 1.5 savegame number of interpreter contexts
if (tryNumber == 1) {
f->seek(currentPos);
numInterpreters = 80;
}
// Load the savegame data
if (DoSync(s, numInterpreters))
// Data load was successful (or likely), so break out of loop
break;
}
uint32 id = f->readSint32LE();
if (id != (uint32)0xFEEDFACE)
error("Incompatible saved game");
bool failed = (f->eos() || f->err());
delete f;
if (failed) {
GUI::MessageDialog dialog(_("Failed to load game state from file."));
dialog.runModal();
}
return !failed;
}
Common::SeekableReadStream *EventRecorder::processSaveStream(const Common::String &fileName) {
Common::InSaveFile *saveFile;
switch (_recordMode) {
case kRecorderPlayback:
debugC(1, kDebugLevelEventRec, "playback:action=\"Process save file\" filename=%s len=%d", fileName.c_str(), _playbackFile->getHeader().saveFiles[fileName].size);
return new Common::MemoryReadStream(_playbackFile->getHeader().saveFiles[fileName].buffer, _playbackFile->getHeader().saveFiles[fileName].size);
case kRecorderRecord:
saveFile = _realSaveManager->openForLoading(fileName);
if (saveFile != NULL) {
_playbackFile->addSaveFile(fileName, saveFile);
saveFile->seek(0);
}
return saveFile;
default:
return NULL;
break;
}
}
SaveStateList DreamWebMetaEngine::listSaves(const char *target) const {
Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
Common::StringArray files = saveFileMan->listSavefiles("DREAMWEB.D??");
Common::sort(files.begin(), files.end());
SaveStateList saveList;
for(uint i = 0; i < files.size(); ++i) {
const Common::String &file = files[i];
Common::InSaveFile *stream = saveFileMan->openForLoading(file);
if (!stream)
error("cannot open save file %s", file.c_str());
char name[17] = {};
stream->seek(0x61);
stream->read(name, sizeof(name) - 1);
delete stream;
int slotNum = atoi(file.c_str() + file.size() - 2);
SaveStateDescriptor sd(slotNum, name);
saveList.push_back(sd);
}
return saveList;
}
bool PersistenceService::loadGame(uint slotID) {
Common::SaveFileManager *sfm = g_system->getSavefileManager();
Common::InSaveFile *file;
// Überprüfen, ob die Slot-ID zulässig ist.
if (slotID >= SLOT_COUNT) {
error("Tried to load from an invalid slot (%d). Only slot ids form 0 to %d are allowed.", slotID, SLOT_COUNT - 1);
return false;
}
SavegameInformation &curSavegameInfo = _impl->_savegameInformations[slotID];
// Überprüfen, ob der Slot belegt ist.
if (!curSavegameInfo.isOccupied) {
error("Tried to load from an empty slot (%d).", slotID);
return false;
}
// Überprüfen, ob der Spielstand im angegebenen Slot mit der aktuellen Engine-Version kompatibel ist.
// Im Debug-Modus wird dieser Test übersprungen. Für das Testen ist es hinderlich auf die Einhaltung dieser strengen Bedingung zu bestehen,
// da sich die Versions-ID bei jeder Codeänderung mitändert.
#ifndef DEBUG
if (!curSavegameInfo.isCompatible) {
error("Tried to load a savegame (%d) that is not compatible with this engine version.", slotID);
return false;
}
#endif
byte *compressedDataBuffer = new byte[curSavegameInfo.gamedataLength];
byte *uncompressedDataBuffer = new byte[curSavegameInfo.gamedataUncompressedLength];
Common::String filename = generateSavegameFilename(slotID);
file = sfm->openForLoading(filename);
file->seek(curSavegameInfo.gamedataOffset);
file->read(reinterpret_cast<char *>(&compressedDataBuffer[0]), curSavegameInfo.gamedataLength);
if (file->err()) {
error("Unable to load the gamedata from the savegame file \"%s\".", filename.c_str());
delete[] compressedDataBuffer;
delete[] uncompressedDataBuffer;
return false;
}
// Uncompress game data, if needed.
unsigned long uncompressedBufferSize = curSavegameInfo.gamedataUncompressedLength;
if (uncompressedBufferSize > curSavegameInfo.gamedataLength) {
// Older saved game, where the game data was compressed again.
if (!Common::uncompress(reinterpret_cast<byte *>(&uncompressedDataBuffer[0]), &uncompressedBufferSize,
reinterpret_cast<byte *>(&compressedDataBuffer[0]), curSavegameInfo.gamedataLength)) {
error("Unable to decompress the gamedata from savegame file \"%s\".", filename.c_str());
delete[] uncompressedDataBuffer;
delete[] compressedDataBuffer;
delete file;
return false;
}
} else {
// Newer saved game with uncompressed game data, copy it as-is.
memcpy(uncompressedDataBuffer, compressedDataBuffer, uncompressedBufferSize);
}
InputPersistenceBlock reader(&uncompressedDataBuffer[0], curSavegameInfo.gamedataUncompressedLength, curSavegameInfo.version);
// Einzelne Engine-Module depersistieren.
bool success = true;
success &= Kernel::getInstance()->getScript()->unpersist(reader);
// Muss unbedingt nach Script passieren. Da sonst die bereits wiederhergestellten Regions per Garbage-Collection gekillt werden.
success &= RegionRegistry::instance().unpersist(reader);
success &= Kernel::getInstance()->getGfx()->unpersist(reader);
success &= Kernel::getInstance()->getSfx()->unpersist(reader);
success &= Kernel::getInstance()->getInput()->unpersist(reader);
delete[] compressedDataBuffer;
delete[] uncompressedDataBuffer;
delete file;
if (!success) {
error("Unable to unpersist the gamedata from savegame file \"%s\".", filename.c_str());
return false;
}
return true;
}