C++ InSaveFile::readSint16LE方法代码示例

SaveStateDescriptor GnapMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
	Common::String fileName = Common::String::format("%s.%03d", target, slot);
	Common::InSaveFile *file = g_system->getSavefileManager()->openForLoading(fileName);
	if (file) {
		char saveIdentBuffer[5];
		file->read(saveIdentBuffer, 5);

		int32 version = file->readByte();
		if (version > GNAP_SAVEGAME_VERSION) {
			delete file;
			return SaveStateDescriptor();
		}

		Common::String saveName;
		char ch;
		while ((ch = (char)file->readByte()) != '\0')
			saveName += ch;

		SaveStateDescriptor desc(slot, saveName);

		if (version != 1) {
			Graphics::Surface *const thumbnail = Graphics::loadThumbnail(*file);
			desc.setThumbnail(thumbnail);
		}

		int year = file->readSint16LE();
		int month = file->readSint16LE();
		int day = file->readSint16LE();
		int hour = file->readSint16LE();
		int minutes = file->readSint16LE();

		desc.setSaveDate(year, month, day);
		desc.setSaveTime(hour, minutes);

		delete file;
		return desc;
	}

	return SaveStateDescriptor();
}

void SagaEngine::load(const char *fileName) {
	Common::InSaveFile *in;
	int commonBufferSize;
	int sceneNumber, insetSceneNumber;
	int mapx, mapy;
	char title[TITLESIZE];

	if (!(in = _saveFileMan->openForLoading(fileName))) {
		return;
	}

	_saveHeader.type = in->readUint32BE();
	_saveHeader.size = in->readUint32LE();
	_saveHeader.version = in->readUint32LE();
	in->read(_saveHeader.name, sizeof(_saveHeader.name));

	// Some older saves were not written in an endian safe fashion.
	// We try to detect this here by checking for extremly high version values.
	// If found, we retry with the data swapped.
	if (_saveHeader.version > 0xFFFFFF) {
		warning("This savegame is not endian safe, retrying with the data swapped");
		_saveHeader.version = SWAP_BYTES_32(_saveHeader.version);
	}

	debug(2, "Save version: 0x%X", _saveHeader.version);

	if (_saveHeader.version < 4)
		warning("This savegame is not endian-safe. There may be problems");

	if (_saveHeader.type != MKTAG('S','A','G','A')) {
		error("SagaEngine::load wrong save game format");
	}

	if (_saveHeader.version > 4) {
		in->read(title, TITLESIZE);
		debug(0, "Save is for: %s", title);
	}

	if (_saveHeader.version >= 6) {
		// We don't need the thumbnail here, so just read it and discard it
		Graphics::skipThumbnail(*in);

		in->readUint32BE();	// save date
		in->readUint16BE(); // save time

		if (_saveHeader.version >= 8) {
			uint32 playTime = in->readUint32BE();
			g_engine->setTotalPlayTime(playTime * 1000);
		}
	}

	// Clear pending events here, and don't process queued music events
	_events->clearList(false);

	// Surrounding scene
	sceneNumber = in->readSint32LE();
#ifdef ENABLE_IHNM
	if (getGameId() == GID_IHNM) {
		int currentChapter = _scene->currentChapterNumber();
		_scene->setChapterNumber(in->readSint32LE());
		in->skip(4);	// obsolete, was used for setting the protagonist
		if (_scene->currentChapterNumber() != currentChapter)
			_scene->changeScene(-2, 0, kTransitionFade, _scene->currentChapterNumber());
		_scene->setCurrentMusicTrack(in->readSint32LE());
		_scene->setCurrentMusicRepeat(in->readSint32LE());
		_music->stop();
		if (_scene->currentChapterNumber() == 8)
			_interface->setMode(kPanelChapterSelection);
		if (!isIHNMDemo()) {
			_music->play(_music->_songTable[_scene->getCurrentMusicTrack()], _scene->getCurrentMusicRepeat() ? MUSIC_LOOP : MUSIC_NORMAL);
		} else {
			_music->play(3, MUSIC_LOOP);
		}
	}
#endif

	// Inset scene
	insetSceneNumber = in->readSint32LE();

#ifdef ENABLE_IHNM
	if (getGameId() == GID_IHNM) {
		_globalFlags = in->readUint32LE();
		for (int i = 0; i < ARRAYSIZE(_ethicsPoints); i++)
			_ethicsPoints[i] = in->readSint16LE();
	}
#endif

	_interface->loadState(in);

	_actor->loadState(in);

	commonBufferSize = in->readSint16LE();
	_script->_commonBuffer.resize(commonBufferSize);
	in->read(_script->_commonBuffer.getBuffer(), commonBufferSize);

	if (getGameId() == GID_ITE) {
		mapx = in->readSint16LE();
		mapy = in->readSint16LE();
		_isoMap->setMapPosition(mapx, mapy);
	}
//.........这里部分代码省略.........

bool AvalancheEngine::loadGame(const int16 slot) {
	Common::String fileName = getSaveFileName(slot);
	Common::InSaveFile *f = g_system->getSavefileManager()->openForLoading(fileName);
	if (!f)
		return false;

	uint32 signature = f->readUint32LE();
	if (signature != MKTAG('A', 'V', 'A', 'L'))
		return false;

	// Check version. We can't restore from obsolete versions.
	byte saveVersion = f->readByte();
	if (saveVersion > kSavegameVersion) {
		warning("Savegame of incompatible version!");
		delete f;
		return false;
	}

	// Read the description.
	uint32 descSize = f->readUint32LE();
	Common::String description;
	for (uint32 i = 0; i < descSize; i++) {
		char actChar = f->readByte();
		description += actChar;
	}

	description.toUppercase();
	Graphics::skipThumbnail(*f);

	// Read the time the game was saved.
	TimeDate t;
	t.tm_mday = f->readSint16LE();
	t.tm_mon = f->readSint16LE();
	t.tm_year = f->readSint16LE();

	resetAllVariables();

	Common::Serializer sz(f, NULL);
	synchronize(sz);
	delete f;

	_isLoaded = true;

	_animationsEnabled = false;

	if (_holdTheDawn) {
		_holdTheDawn = false;
		fadeIn();
	}

	_background->release();
	minorRedraw();
	_dropdown->setup();
	setRoom(kPeopleAvalot, _room);
	_alive = true;
	refreshObjectList();
	_animation->updateSpeed();
	drawDirection();
	_animation->animLink();
	_background->update();

	Common::String tmpStr = Common::String::format("%cLoaded: %c%s.ASG%c%c%c%s%c%csaved on %s.",
		kControlItalic, kControlRoman, description.c_str(), kControlCenter, kControlNewLine,
		kControlNewLine, _roomnName.c_str(), kControlNewLine, kControlNewLine,
		expandDate(t.tm_mday, t.tm_mon, t.tm_year).c_str());
	_dialogs->displayText(tmpStr);

	AnimationType *avvy = _animation->_sprites[0];
	if (avvy->_quick && avvy->_visible)
		_animation->setMoveSpeed(0, _animation->getDirection()); // We push Avvy in the right direction is he was moving.

	return true;
}