C++ InSaveFile::pos方法代码示例

Common::Error SavesManager::loadGameState(int slot) {
	Combat &combat = *g_vm->_combat;
	EventsManager &events = *g_vm->_events;
	FileManager &files = *g_vm->_files;
	Map &map = *g_vm->_map;
	Party &party = *g_vm->_party;

	Common::InSaveFile *saveFile = g_system->getSavefileManager()->openForLoading(
		generateSaveName(slot));
	if (!saveFile)
		return Common::kReadingFailed;

	// Load the savaegame header
	XeenSavegameHeader header;
	if (!readSavegameHeader(saveFile, header))
		error("Invalid savegame");

	// Set the total play time
	events.setPlayTime(header._totalFrames);

	// Loop through loading the sides' save archives
	SaveArchive *archives[2] = { File::_xeenSave, File::_darkSave };
	for (int idx = 0; idx < 2; ++idx) {
		uint fileSize = saveFile->readUint32LE();

		if (archives[idx]) {
			if (fileSize) {
				Common::SeekableSubReadStream arcStream(saveFile, saveFile->pos(),
					saveFile->pos() + fileSize);
				archives[idx]->load(arcStream);
			} else {
				archives[idx]->reset((idx == 1) ? File::_darkCc : File::_xeenCc);
			}
		} else {
			assert(!fileSize);
		}
	}

	// Read in miscellaneous
	files.load(*saveFile);

	// Load the character roster and party
	File::_currentSave->loadParty();

	// Reset any combat information from the previous game
	combat.reset();
	party._treasure.reset();

	// Load the new map
	map.clearMaze();
	map._loadCcNum = files._ccNum;
	map.load(party._mazeId);

	delete saveFile;
	return Common::kNoError;
}

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;
}

	void readSlotSavegameInformation(uint slotID) {
		// Get the information corresponding to the requested save slot.
		SavegameInformation &curSavegameInfo = _savegameInformations[slotID];
		curSavegameInfo.clear();

		// Generate the save slot file name.
		Common::String filename = generateSavegameFilename(slotID);

		// Try to open the savegame for loading
		Common::SaveFileManager *sfm = g_system->getSavefileManager();
		Common::InSaveFile *file = sfm->openForLoading(filename);

		if (file) {
			// Read in the header
			Common::String storedMarker = loadString(file);
			Common::String storedVersionID = loadString(file);
			if (storedVersionID == VERSIONIDOLD) {
				curSavegameInfo.version = 1;
			} else {
				Common::String versionNum = loadString(file);
				curSavegameInfo.version = atoi(versionNum.c_str());
			}
			Common::String gameDescription = loadString(file);
			Common::String gamedataLength = loadString(file);
			curSavegameInfo.gamedataLength = atoi(gamedataLength.c_str());
			Common::String gamedataUncompressedLength = loadString(file);
			curSavegameInfo.gamedataUncompressedLength = atoi(gamedataUncompressedLength.c_str());

			// If the header can be read in and is detected to be valid, we will have a valid file
			if (storedMarker == FILE_MARKER) {
				// The slot is marked as occupied.
				curSavegameInfo.isOccupied = true;
				// Check if the saved game is compatible with the current engine version.
				curSavegameInfo.isCompatible = (curSavegameInfo.version <= VERSIONNUM);
				// Load the save game description.
				curSavegameInfo.description = gameDescription;
				// The offset to the stored save game data within the file.
				// This reflects the current position, as the header information
				// is still followed by a space as separator.
				curSavegameInfo.gamedataOffset = static_cast<uint>(file->pos());
			}

			delete file;
		}
	}

Common::InSaveFile *SaveLoad::openForLoading(const Common::String &target, int slot, SaveStateDescriptor *descriptor) {
	// Validate the slot number
	if (!isSlotValid(slot)) {
		return nullptr;
	}

	// Open the savefile
	Common::String savename = getSlotSaveName(target, slot);
	Common::InSaveFile *savefile = g_system->getSavefileManager()->openForLoading(savename);
	if (!savefile) {
		return nullptr;
	}

	// Read the savefile version
	uint8 version;
	if (savefile->size() == 1024) {
		version = 0;
	} else {
		version = savefile->readByte();
	}

	// Verify we can read this version
	if (version > SUPPORTED_SAVEFILE_VERSION) {
		//TODO: show the error about unsupported savefile version
	}

	// Save the current position as the start for the engine data
	int metaDataSize = savefile->pos();

	// Fill the SaveStateDescriptor if it was provided
	if (descriptor) {
		// Initialize the SaveStateDescriptor
		descriptor->setSaveSlot(slot);

		// TODO: Add extra information
		//setSaveDate(int year, int month, int day)
		//setSaveTime(int hour, int min)
		//setPlayTime(int hours, int minutes)

		// Read the savegame description
		Common::String description;
		unsigned char c = 1;
		for (int i = 0; (c != 0) && (i < 15); i++) {
			c = savefile->readByte();
			switch (c) {
				case 0:
					break;
				case 16: // @
				// fall through intended
				case 254: // . (generated when pressing space)
					c = ' ';
					break;
				case 244: // $
					c = 0;
					break;
				default:
					c += 0x30;
			}
			if (c != 0) {
				description += c;
			}
		}
		descriptor->setDescription(description);
	}

	// Return a substream, skipping the metadata
	Common::SeekableSubReadStream *sub = new Common::SeekableSubReadStream(savefile, metaDataSize, savefile->size(), DisposeAfterUse::YES);

	// Move to the beginning of the substream
	sub->seek(0, SEEK_SET);

	return sub;
}

Common::Error EoBCoreEngine::loadGameState(int slot) {
	// Special slot id -1 for EOB1 party transfer
	const char *fileName = (slot == -1) ? _savegameFilename.c_str() : getSavegameFilename(slot);

	SaveHeader header;
	Common::InSaveFile *saveFile = openSaveForReading(fileName, header, (slot != -1));
	if (!saveFile)
		return Common::Error(Common::kReadingFailed);

	Common::SeekableSubReadStreamEndian in(saveFile, saveFile->pos(), saveFile->size(), !header.originalSave, DisposeAfterUse::YES);
	_loading = true;

	if (slot != -1)
		_screen->fadeToBlack(10);

	for (int i = 0; i < 6; i++) {
		EoBCharacter *c = &_characters[i];
		c->id = in.readByte();
		c->flags = in.readByte();
		in.read(c->name, 11);
		c->strengthCur = in.readSByte();
		c->strengthMax = in.readSByte();
		c->strengthExtCur = in.readSByte();
		c->strengthExtMax = in.readSByte();
		c->intelligenceCur = in.readSByte();
		c->intelligenceMax = in.readSByte();
		c->wisdomCur = in.readSByte();
		c->wisdomMax = in.readSByte();
		c->dexterityCur = in.readSByte();
		c->dexterityMax = in.readSByte();
		c->constitutionCur = in.readSByte();
		c->constitutionMax = in.readSByte();
		c->charismaCur = in.readSByte();
		c->charismaMax = in.readSByte();
		c->hitPointsCur = in.readSint16BE();
		c->hitPointsMax = in.readSint16BE();
		c->armorClass = in.readSByte();
		c->disabledSlots = in.readByte();
		c->raceSex = in.readByte();
		c->cClass = in.readByte();
		c->alignment = in.readByte();
		c->portrait = in.readSByte();
		if (slot == -1 && c->portrait < 0)
			c->portrait = -c->portrait + 43;
		c->food = in.readByte();
		in.read(c->level, 3);
		for (int ii = 0; ii < 3; ii++)
			c->experience[ii] = in.readUint32BE();
		delete[] c->faceShape;
		c->faceShape = 0;
		in.read(c->mageSpells, 80);
		in.read(c->clericSpells, 80);
		c->mageSpellsAvailableFlags = in.readUint32BE();
		for (int ii = 0; ii < 27; ii++)
			c->inventory[ii] = in.readSint16BE();
		uint32 ct = _system->getMillis();
		for (int ii = 0; ii < 10; ii++) {
			c->timers[ii] = in.readUint32BE();
			if (c->timers[ii])
				c->timers[ii] += ct;
		}
		in.read(c->events, 10);
		in.read(c->effectsRemainder, 4);
		c->effectFlags = in.readUint32BE();
		c->damageTaken = in.readByte();
		in.read(c->slotStatus, 5);
	}

	setupCharacterTimers();

	_screen->loadShapeSetBitmap("CHARGENA", 3, 3);
	for (int i = 0; i < 6; i++) {
		EoBCharacter *c = &_characters[i];
		if (!c->flags || c->portrait < 0)
			continue;
		c->faceShape = _screen->encodeShape((c->portrait % 10) << 2, (c->portrait / 10) << 5, 4, 32, true);
	}

	_screen->loadShapeSetBitmap(_flags.gameID == GI_EOB2 ? "OUTPORTS" : "OUTTAKE", 3, 3);
	for (int i = 0; i < 6; i++) {
		EoBCharacter *c = &_characters[i];
		if (!c->flags || c->portrait >= 0)
			continue;
		c->faceShape = _screen->encodeShape((-(c->portrait + 1)) << 2, _flags.gameID == GI_EOB2 ? 0 : 160, 4, 32, true);
	}
	_screen->_curPage = 0;

	if (slot == -1) {
		// Skip all settings which aren't necessary for party transfer.
		// Jump directly to the items list.
		in.skip(108);
	} else {
		_currentLevel = in.readByte();
		_currentSub = in.readSByte();
		_currentBlock = in.readUint16BE();
		_currentDirection = in.readUint16BE();
		_itemInHand = in.readSint16BE();
		_hasTempDataFlags = in.readUint32BE();
		_partyEffectFlags = in.readUint32BE();

//.........这里部分代码省略.........

Common::Error KyraEngine_HoF::loadGameState(int slot) {
	const char *fileName = getSavegameFilename(slot);

	SaveHeader header;
	Common::InSaveFile *saveFile = openSaveForReading(fileName, header);
	if (!saveFile) {
		showMessageFromCCode(0x35, 0x84, 0);
		snd_playSoundEffect(0x0D);
		return Common::kUnknownError;
	}

	if (header.originalSave)
		warning("Trying to load savegame from original interpreter, while this is possible, it is not officially supported");

	bool setFlag1EE = (queryGameFlag(0x1EE) != 0);

	_deathHandler = -1;
	if (!_unkSceneScreenFlag1) {
		_sound->beginFadeOut();
		_system->delayMillis(5 * _tickLength);
		_lastMusicCommand = -1;
	}

	int loadedZTable = _characterShapeFile;

	Common::SeekableSubReadStreamEndian in(saveFile, saveFile->pos(), saveFile->size(), !header.originalSave, DisposeAfterUse::YES);

	_screen->hideMouse();

	if (!header.originalSave) {
		_timer->loadDataFromFile(in, header.version);

		uint32 flagsSize = in.readUint32BE();
		assert(flagsSize <= sizeof(_flagsTable));
		in.read(_flagsTable, flagsSize);
	}

	// usually we have to save the flag set by opcode 10 here
	//word_2AB05 = in.readUint16();
	if (header.originalSave)
		in.readUint16();
	_lastMusicCommand = in.readSint16();
	_newChapterFile = in.readByte();
	_characterShapeFile = in.readByte();
	_cauldronState = in.readByte();
	_colorCodeFlag1 = in.readByte();
	_colorCodeFlag2 = in.readByte();
	_bookCurPage = in.readByte();
	_bookMaxPage = in.readByte();
	for (int i = 0; i < 7; ++i)
		_presetColorCode[i] = in.readByte();
	for (int i = 0; i < 7; ++i)
		_inputColorCode[i] = in.readByte();
	for (int i = 0; i < 25; ++i)
		_cauldronTable[i] = in.readSint16();
	for (int i = 0; i < 20; ++i)
		_hiddenItems[i] = in.readSint16();

	if (header.originalSave) {
		assert(sizeof(_flagsTable) >= 0x41);
		in.read(_flagsTable, 0x41);
	}

	for (int i = 0; i < 19; ++i)
		in.read(_conversationState[i], 14);

	if (!header.originalSave) {
		in.read(_newSceneDlgState, 32);
	} else {
		for (int i = 0; i < 31; ++i)
			_newSceneDlgState[i] = in.readUint16();
	}

	_cauldronUseCount = in.readSint16();

	if (header.originalSave)
		in.seek(6, SEEK_CUR);

	_mainCharacter.sceneId = in.readUint16();
	_mainCharacter.dlgIndex = in.readSint16();
	_mainCharacter.height = in.readByte();
	_mainCharacter.facing = in.readByte();
	_mainCharacter.animFrame = in.readUint16();

	if (header.version <= 10 || header.originalSave)
		in.seek(3, SEEK_CUR);

	for (int i = 0; i < 20; ++i)
		_mainCharacter.inventory[i] = in.readUint16();
	_mainCharacter.x1 = in.readSint16();
	_mainCharacter.y1 = in.readSint16();
	_mainCharacter.x2 = in.readSint16();
	_mainCharacter.y2 = in.readSint16();

	for (int i = 0; i < 30; ++i) {
		_itemList[i].id = in.readSint16();
		_itemList[i].sceneId = in.readUint16();
		_itemList[i].x = in.readSint16();
		_itemList[i].y = in.readByte();
		if (header.version <= 9 || header.originalSave)
//.........这里部分代码省略.........

Common::Error LoLEngine::loadGameState(int slot) {
	const uint16 *cdf[] = { _charDefsMan, _charDefsWoman, _charDefsKieran, _charDefsMan, _charDefsAkshel };

	const char *fileName = getSavegameFilename(slot);

	SaveHeader header;
	Common::InSaveFile *saveFile = openSaveForReading(fileName, header);
	if (!saveFile) {
		_txt->printMessage(2, "%s", getLangString(0x425d));
		return Common::kNoError;
	}

	_screen->fadeClearSceneWindow(10);
	completeDoorOperations();
	_screen->fillRect(112, 0, 287, 119, 0, 0);
	_screen->updateScreen();

	Common::SeekableSubReadStreamEndian in(saveFile, saveFile->pos(), saveFile->size(), !header.originalSave, DisposeAfterUse::YES);

	for (int i = 0; i < 4; i++) {
		LoLCharacter *c = &_characters[i];
		c->flags = in.readUint16BE();
		in.read(c->name, 11);
		c->raceClassSex = in.readByte();
		c->id = in.readSint16BE();
		c->curFaceFrame = in.readByte();
		c->tempFaceFrame = in.readByte();
		c->screamSfx = in.readByte();
		for (int ii = 0; ii < 8; ii++)
			c->itemsMight[ii] = in.readUint16BE();
		for (int ii = 0; ii < 8; ii++)
			c->protectionAgainstItems[ii] = in.readUint16BE();
		c->itemProtection = in.readUint16BE();
		c->hitPointsCur = in.readSint16BE();
		c->hitPointsMax = in.readUint16BE();
		c->magicPointsCur = in.readSint16BE();
		c->magicPointsMax = in.readUint16BE();
		c->field_41 = in.readByte();
		c->damageSuffered = in.readUint16BE();
		c->weaponHit = in.readUint16BE();
		c->totalMightModifier = in.readUint16BE();
		c->totalProtectionModifier = in.readUint16BE();
		c->might = in.readUint16BE();
		c->protection = in.readUint16BE();
		c->nextAnimUpdateCountdown = in.readSint16BE();
		for (int ii = 0; ii < 11; ii++)
			c->items[ii] = in.readUint16BE();
		for (int ii = 0; ii < 3; ii++)
			c->skillLevels[ii] = in.readByte();
		for (int ii = 0; ii < 3; ii++)
			c->skillModifiers[ii] = in.readSByte();
		for (int ii = 0; ii < 3; ii++)
			c->experiencePts[ii] = in.readUint32BE();
		for (int ii = 0; ii < 5; ii++)
			c->characterUpdateEvents[ii] = in.readByte();
		for (int ii = 0; ii < 5; ii++)
			c->characterUpdateDelay[ii] = in.readByte();

		if (c->flags & 1) {
			loadCharFaceShapes(i, c->id);
			c->defaultModifiers = cdf[c->raceClassSex];
		}
	}

	in.read(_wllBuffer4, 80);

	_currentBlock = in.readUint16BE();
	_partyPosX = in.readUint16BE();
	_partyPosY = in.readUint16BE();
	_updateFlags = in.readUint16BE();
	_scriptDirection = in.readByte();
	_selectedSpell = in.readByte();
	_sceneDefaultUpdate = in.readByte();
	_compassBroken = in.readByte();
	_drainMagic = in.readByte();
	_currentDirection = in.readUint16BE();
	_compassDirection = in.readUint16BE();
	_selectedCharacter = in.readSByte();
	_currentLevel = in.readByte();
	for (int i = 0; i < 48; i++)
		_inventory[i] = in.readSint16BE();
	_inventoryCurItem = in.readSint16BE();
	_itemInHand = in.readSint16BE();
	_lastMouseRegion = in.readSint16BE();

	if (header.version <= 15) {
		uint16 flags[40];
		memset(flags, 0, sizeof(flags));

		if (header.version == 14) {
			for (int i = 0; i < 16; i++)
				flags[i] = in.readUint16BE();
			flags[26] = in.readUint16BE();
			flags[36] = in.readUint16BE();
		} else if (header.version == 15) {
			for (int i = 0; i < 40; i++)
				flags[i] = in.readUint16BE();
		}

		memset(_flagsTable, 0, sizeof(_flagsTable));
//.........这里部分代码省略.........