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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "engines/metaengine.h"
#include "common/savefile.h"
#include "common/system.h"
#include "graphics/thumbnail.h"
const char *MetaEngine::getSavegameFile(int saveGameIdx, const char *target) const {
static char buffer[100];
snprintf(buffer, 200, "%s.s%02d", target == nullptr ? getEngineId() : target, saveGameIdx);
return buffer;
}
const char *MetaEngine::getSavegamePattern(const char *target) const {
static char buffer[100];
snprintf(buffer, 200, "%s.s##", target == nullptr ? getEngineId() : target);
return buffer;
}
void MetaEngine::appendExtendedSave(Common::OutSaveFile *saveFile, uint32 playtime, Common::String desc) {
ExtendedSavegameHeader header;
uint headerPos = saveFile->pos();
strcpy(header.id, "SVMCR");
header.version = EXTENDED_SAVE_VERSION;
TimeDate curTime;
g_system->getTimeAndDate(curTime);
header.date = ((curTime.tm_mday & 0xFF) << 24) | (((curTime.tm_mon + 1) & 0xFF) << 16) | ((curTime.tm_year + 1900) & 0xFFFF);
header.time = ((curTime.tm_hour & 0xFF) << 8) | ((curTime.tm_min) & 0xFF);
saveFile->write(header.id, 6);
saveFile->writeByte(header.version);
saveFile->writeUint32LE(header.date);
saveFile->writeUint16LE(header.time);
saveFile->writeUint32LE(playtime);
saveFile->writeByte(desc.size());
saveFile->writeString(desc);
Graphics::saveThumbnail(*saveFile); // FIXME. Render proper screen
saveFile->writeUint32LE(headerPos); // Store where the header starts
saveFile->finalize();
}
void MetaEngine::parseSavegameHeader(ExtendedSavegameHeader *header, SaveStateDescriptor *desc) {
int day = (header->date >> 24) & 0xFF;
int month = (header->date >> 16) & 0xFF;
int year = header->date & 0xFFFF;
desc->setSaveDate(year, month, day);
int hour = (header->time >> 8) & 0xFF;
int minutes = header->time & 0xFF;
desc->setSaveTime(hour, minutes);
desc->setPlayTime(header->playtime * 1000);
desc->setDescription(header->description);
}
void MetaEngine::fillDummyHeader(ExtendedSavegameHeader *header) {
// This is wrong header, perhaps it is original savegame. Thus fill out dummy values
header->date = (20 << 24) | (9 << 16) | 2016;
header->time = (9 << 8) | 56;
header->playtime = 0;
}
WARN_UNUSED_RESULT bool MetaEngine::readSavegameHeader(Common::InSaveFile *in, ExtendedSavegameHeader *header, bool skipThumbnail) {
uint oldPos = in->pos();
in->seek(-4, SEEK_END);
int headerOffset = in->readUint32LE();
// Sanity check
if (headerOffset >= in->pos() || headerOffset == 0) {
in->seek(oldPos, SEEK_SET); // Rewind the file
fillDummyHeader(header);
return false;
}
in->seek(headerOffset, SEEK_SET);
in->read(header->id, 6);
// Validate the header Id
if (strcmp(header->id, "SVMCR")) {
in->seek(oldPos, SEEK_SET); // Rewind the file
fillDummyHeader(header);
return false;
}
header->version = in->readByte();
header->date = in->readUint32LE();
header->time = in->readUint16LE();
header->playtime = in->readUint32LE();
if (header->version > 1)
header->description = in->readPascalString();
// Generate savename
SaveStateDescriptor desc;
parseSavegameHeader(header, &desc);
header->saveName = Common::String::format("%s %s", desc.getSaveDate().c_str(), desc.getSaveTime().c_str());
if (header->description.empty())
header->description = header->saveName;
// Get the thumbnail
if (!Graphics::loadThumbnail(*in, header->thumbnail, skipThumbnail)) {
in->seek(oldPos, SEEK_SET); // Rewind the file
return false;
}
in->seek(oldPos, SEEK_SET); // Rewind the file
return true;
}
///////////////////////////////////////
// MetaEngine default implementations
///////////////////////////////////////
SaveStateList MetaEngine::listSaves(const char *target) const {
if (!hasFeature(kSavesUseExtendedFormat))
return SaveStateList();
Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
Common::StringArray filenames;
Common::String pattern(getSavegamePattern());
filenames = saveFileMan->listSavefiles(pattern);
SaveStateList saveList;
for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
// Obtain the last 2 digits of the filename, since they correspond to the save slot
int slotNum = atoi(file->c_str() + file->size() - 2);
if (slotNum >= 0 && slotNum <= getMaximumSaveSlot()) {
Common::ScopedPtr<Common::InSaveFile> in(saveFileMan->openForLoading(*file));
if (in) {
ExtendedSavegameHeader header;
if (!readSavegameHeader(in.get(), &header)) {
continue;
}
SaveStateDescriptor desc;
parseSavegameHeader(&header, &desc);
desc.setSaveSlot(slotNum);
saveList.push_back(desc);
}
}
}
// Sort saves based on slot number.
Common::sort(saveList.begin(), saveList.end(), SaveStateDescriptorSlotComparator());
return saveList;
}
void MetaEngine::removeSaveState(const char *target, int slot) const {
if (!hasFeature(kSavesUseExtendedFormat))
return;
g_system->getSavefileManager()->removeSavefile(getSavegameFile(slot, target));
}
SaveStateDescriptor MetaEngine::querySaveMetaInfos(const char *target, int slot) const {
if (!hasFeature(kSavesUseExtendedFormat))
return SaveStateDescriptor();
Common::ScopedPtr<Common::InSaveFile> f(g_system->getSavefileManager()->openForLoading(
getSavegameFile(slot)));
if (f) {
ExtendedSavegameHeader header;
if (!readSavegameHeader(f.get(), &header, false)) {
return SaveStateDescriptor();
}
// Create the return descriptor
SaveStateDescriptor desc;
parseSavegameHeader(&header, &desc);
desc.setSaveSlot(slot);
desc.setThumbnail(header.thumbnail);
return desc;
}
return SaveStateDescriptor();
}
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