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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 "mohawk/resource.h"
#include "mohawk/riven.h"
#include "mohawk/riven_card.h"
#include "mohawk/riven_saveload.h"
#include "mohawk/riven_stack.h"
#include "common/system.h"
#include "graphics/thumbnail.h"
namespace Mohawk {
RivenSaveMetadata::RivenSaveMetadata() {
saveDay = 0;
saveMonth = 0;
saveYear = 0;
saveHour = 0;
saveMinute = 0;
totalPlayTime = 0;
autoSave = false;
}
bool RivenSaveMetadata::sync(Common::Serializer &s) {
static const Common::Serializer::Version kCurrentVersion = 2;
if (!s.syncVersion(kCurrentVersion)) {
return false;
}
s.syncAsByte(saveDay);
s.syncAsByte(saveMonth);
s.syncAsUint16BE(saveYear);
s.syncAsByte(saveHour);
s.syncAsByte(saveMinute);
s.syncString(saveDescription);
s.syncAsUint32BE(totalPlayTime);
s.syncAsByte(autoSave, 2);
return true;
}
const int RivenSaveLoad::kAutoSaveSlot = 0;
RivenSaveLoad::RivenSaveLoad(MohawkEngine_Riven *vm, Common::SaveFileManager *saveFileMan) : _vm(vm), _saveFileMan(saveFileMan) {
}
RivenSaveLoad::~RivenSaveLoad() {
}
Common::String RivenSaveLoad::buildSaveFilename(const int slot) {
return Common::String::format("riven-%03d.rvn", slot);
}
Common::String RivenSaveLoad::querySaveDescription(const int slot) {
Common::String filename = buildSaveFilename(slot);
Common::InSaveFile *loadFile = g_system->getSavefileManager()->openForLoading(filename);
if (!loadFile) {
return "";
}
MohawkArchive mhk;
if (!mhk.openStream(loadFile)) {
return "";
}
if (!mhk.hasResource(ID_META, 1)) {
return "";
}
Common::SeekableReadStream *metaStream = mhk.getResource(ID_META, 1);
if (!metaStream) {
return "";
}
Common::Serializer serializer = Common::Serializer(metaStream, nullptr);
RivenSaveMetadata metadata;
if (!metadata.sync(serializer)) {
delete metaStream;
return "";
}
delete metaStream;
return metadata.saveDescription;
}
SaveStateDescriptor RivenSaveLoad::querySaveMetaInfos(const int slot) {
Common::String filename = buildSaveFilename(slot);
Common::InSaveFile *loadFile = g_system->getSavefileManager()->openForLoading(filename);
SaveStateDescriptor descriptor;
descriptor.setWriteProtectedFlag(slot == kAutoSaveSlot);
if (!loadFile) {
return descriptor;
}
MohawkArchive mhk;
if (!mhk.openStream(loadFile)) {
return descriptor;
}
if (!mhk.hasResource(ID_META, 1)) {
return descriptor;
}
Common::SeekableReadStream *metaStream = mhk.getResource(ID_META, 1);
if (!metaStream) {
return descriptor;
}
Common::Serializer serializer = Common::Serializer(metaStream, nullptr);
RivenSaveMetadata metadata;
if (!metadata.sync(serializer)) {
delete metaStream;
return descriptor;
}
descriptor.setDescription(metadata.saveDescription);
descriptor.setPlayTime(metadata.totalPlayTime);
descriptor.setSaveDate(metadata.saveYear, metadata.saveMonth, metadata.saveDay);
descriptor.setSaveTime(metadata.saveHour, metadata.saveMinute);
if (metadata.autoSave) // Allow non-saves to be deleted, but not autosaves
descriptor.setDeletableFlag(slot != kAutoSaveSlot);
delete metaStream;
if (!mhk.hasResource(ID_THMB, 1)) {
return descriptor;
}
Common::SeekableReadStream *thmbStream = mhk.getResource(ID_THMB, 1);
if (!thmbStream) {
return descriptor;
}
Graphics::Surface *thumbnail;
if (!Graphics::loadThumbnail(*thmbStream, thumbnail)) {
return descriptor;
}
descriptor.setThumbnail(thumbnail);
delete thmbStream;
return descriptor;
}
bool RivenSaveLoad::isAutoSaveAllowed() {
// Open autosave slot and see if it an autosave
// Autosaving will be enabled if it is an autosave or if there is no save in that slot
Common::String filename = buildSaveFilename(kAutoSaveSlot);
Common::InSaveFile *loadFile = g_system->getSavefileManager()->openForLoading(filename);
if (!loadFile) {
return true; // There is no save in the autosave slot, enable autosave
}
MohawkArchive mhk;
if (!mhk.openStream(loadFile)) {
return true; // Corrupt save, enable autosave
}
if (!mhk.hasResource(ID_META, 1)) {
return false; // don't autosave over saves that don't have a meta section (like saves from the original)
}
Common::ScopedPtr<Common::SeekableReadStream> metaStream(mhk.getResource(ID_META, 1));
if (!metaStream) {
return true; // corrupt save, enable autosave
}
Common::Serializer serializer = Common::Serializer(metaStream.get(), nullptr);
RivenSaveMetadata metadata;
if (!metadata.sync(serializer)) {
return true; // corrupt save, enable autosave
}
return metadata.autoSave;
}
Common::Error RivenSaveLoad::loadGame(const int slot) {
if (_vm->getFeatures() & GF_DEMO) // Don't load games in the demo
return Common::kNoError;
Common::String filename = buildSaveFilename(slot);
Common::InSaveFile *loadFile = _saveFileMan->openForLoading(filename);
if (!loadFile)
return Common::kReadingFailed;
debug(0, "Loading game from \'%s\'", filename.c_str());
MohawkArchive *mhk = new MohawkArchive();
if (!mhk->openStream(loadFile)) {
warning("Save file is not a Mohawk archive");
delete mhk;
return Common::Error(Common::kUnknownError, "Invalid save file");
}
// First, let's make sure we're using a saved game file from this version of Riven by checking the VERS resource
Common::SeekableReadStream *vers = mhk->getResource(ID_VERS, 1);
uint32 saveGameVersion = vers->readUint32BE();
delete vers;
if ((saveGameVersion == kCDSaveGameVersion && (_vm->getFeatures() & GF_DVD))
|| (saveGameVersion == kDVDSaveGameVersion && !(_vm->getFeatures() & GF_DVD))) {
warning("Unable to load: Saved game created using an incompatible game version - CD vs DVD");
delete mhk;
return Common::Error(Common::kUnknownError, "Saved game created using an incompatible game version - CD vs DVD");
}
// Now, we'll read in the variable values.
Common::SeekableReadStream *vars = mhk->getResource(ID_VARS, 1);
Common::Array<uint32> rawVariables;
while (!vars->eos()) {
// The original engine stores the variables values in an array. All the slots in
// the array may not be in use, which is why it needs a reference counter and
// a flag to tell if the value has been set.
vars->readUint32BE(); // Reference counter
vars->readUint32BE(); // Variable initialized flag
rawVariables.push_back(vars->readUint32BE());
}
delete vars;
// Next, we set the variables based on the name found by the index in the VARS resource.
// TODO: Merge with code in mohawk.cpp for loading names?
Common::SeekableReadStream *names = mhk->getResource(ID_NAME, 1);
uint16 namesCount = names->readUint16BE();
uint16 *stringOffsets = new uint16[namesCount];
for (uint16 i = 0; i < namesCount; i++)
stringOffsets[i] = names->readUint16BE();
for (uint16 i = 0; i < namesCount; i++)
names->readUint16BE(); // Skip unknown values
uint32 curNamesPos = names->pos();
for (uint32 i = 0; i < namesCount && !names->eos(); i++) {
names->seek(curNamesPos);
names->seek(stringOffsets[i], SEEK_CUR);
Common::String name;
char c = (char)names->readByte();
while (c) {
name += c;
c = (char)names->readByte();
}
// These are timing variables used with the DVD version of Riven for the whark
// puzzle and are not needed at all. See xjschool280_resetleft() and
// xjschool280_resetright.
if (name == "dropLeftStart" || name == "dropRightStart")
continue;
uint32 &var = _vm->_vars[name];
name.toLowercase();
// WORKAROUND: time variables are reset here for one main reason:
// The save does not store any start point for the time, so we don't know the real time.
// Because of this, in many cases, the original would just give a 'free' Ytram upon saving
// since the time would be used in a new (improper) time frame.
if (name.contains("time"))
var = 0;
else
var = rawVariables[i];
}
_vm->_gfx->setTransitionMode((RivenTransitionMode) _vm->_vars["transitionmode"]);
_vm->changeToStack(_vm->_vars["CurrentStackID"]);
_vm->changeToCard(_vm->_vars["CurrentCardID"]);
delete names;
delete[] stringOffsets;
// Reset zip mode data
_vm->_zipModeData.clear();
// Finally, we load in zip mode data.
Common::SeekableReadStream *zips = mhk->getResource(ID_ZIPS, 1);
uint16 zipsRecordCount = zips->readUint16BE();
for (uint16 i = 0; i < zipsRecordCount; i++) {
ZipMode zip;
uint16 zipsNameLength = zips->readUint16BE();
for (uint16 j = 0; j < zipsNameLength; j++)
zip.name += zips->readByte();
zip.id = zips->readUint16BE();
_vm->_zipModeData.push_back(zip);
}
delete zips;
// Load the ScummVM specific save metadata
if (mhk->hasResource(ID_META, 1)) {
Common::SeekableReadStream *metadataStream = mhk->getResource(ID_META, 1);
Common::Serializer serializer = Common::Serializer(metadataStream, nullptr);
RivenSaveMetadata metadata;
metadata.sync(serializer);
// Set the saved total play time
_vm->setTotalPlayTime(metadata.totalPlayTime);
delete metadataStream;
}
delete mhk;
return Common::kNoError;
}
Common::MemoryWriteStreamDynamic *RivenSaveLoad::genVERSSection() {
Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic(DisposeAfterUse::YES);
if (_vm->getFeatures() & GF_DVD)
stream->writeUint32BE(kDVDSaveGameVersion);
else
stream->writeUint32BE(kCDSaveGameVersion);
return stream;
}
Common::MemoryWriteStreamDynamic *RivenSaveLoad::genVARSSection() {
Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic(DisposeAfterUse::YES);
for (RivenVariableMap::const_iterator it = _vm->_vars.begin(); it != _vm->_vars.end(); it++) {
stream->writeUint32BE(1); // Reference counter
stream->writeUint32BE(1); // Variable initialized flag
stream->writeUint32BE(it->_value);
}
return stream;
}
static int stringCompareToIgnoreCase(const Common::String &s1, const Common::String &s2) {
return s1.compareToIgnoreCase(s2) < 0;
}
Common::MemoryWriteStreamDynamic *RivenSaveLoad::genNAMESection() {
Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic(DisposeAfterUse::YES);
stream->writeUint16BE(_vm->_vars.size());
uint16 curPos = 0;
for (RivenVariableMap::const_iterator it = _vm->_vars.begin(); it != _vm->_vars.end(); it++) {
stream->writeUint16BE(curPos);
curPos += it->_key.size() + 1;
}
// The original engine does not store the variables in a HashMap, but in a "NameList"
// for the keys and an array for the values. The NameList data structure maintains an array
// of indices in the string table sorted by case insensitive key alphabetical order.
// It is used to perform fast key -> index lookups.
// ScummVM does not need the sorted array, but has to write it anyway for the saved games
// to be compatible with original engine.
Common::Array<Common::String> sortedKeys;
for (RivenVariableMap::const_iterator it = _vm->_vars.begin(); it != _vm->_vars.end(); it++) {
sortedKeys.push_back(it->_key);
}
Common::sort(sortedKeys.begin(), sortedKeys.end(), stringCompareToIgnoreCase);
for (uint i = 0; i < sortedKeys.size(); i++) {
uint16 varIndex = 0;
for (RivenVariableMap::const_iterator it = _vm->_vars.begin(); it != _vm->_vars.end(); it++) {
if (it->_key == sortedKeys[i]) {
stream->writeUint16BE(varIndex);
break;
}
varIndex++;
}
}
for (RivenVariableMap::const_iterator it = _vm->_vars.begin(); it != _vm->_vars.end(); it++) {
stream->write(it->_key.c_str(), it->_key.size());
stream->writeByte(0);
}
return stream;
}
Common::MemoryWriteStreamDynamic *RivenSaveLoad::genZIPSSection() {
Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic(DisposeAfterUse::YES);
stream->writeUint16BE(_vm->_zipModeData.size());
for (uint16 i = 0; i < _vm->_zipModeData.size(); i++) {
stream->writeUint16BE(_vm->_zipModeData[i].name.size());
stream->write(_vm->_zipModeData[i].name.c_str(), _vm->_zipModeData[i].name.size());
stream->writeUint16BE(_vm->_zipModeData[i].id);
}
return stream;
}
Common::MemoryWriteStreamDynamic *RivenSaveLoad::genTHMBSection(const Graphics::Surface *thumbnail) const {
Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic(DisposeAfterUse::YES);
if (thumbnail) {
Graphics::saveThumbnail(*stream, *thumbnail);
} else {
Graphics::saveThumbnail(*stream);
}
return stream;
}
Common::MemoryWriteStreamDynamic *RivenSaveLoad::genMETASection(const Common::String &desc, bool autoSave) const {
Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic(DisposeAfterUse::YES);
Common::Serializer serializer = Common::Serializer(nullptr, stream);
TimeDate t;
_vm->_system->getTimeAndDate(t);
RivenSaveMetadata metadata;
metadata.saveDay = t.tm_mday;
metadata.saveMonth = t.tm_mon + 1;
metadata.saveYear = t.tm_year + 1900;
metadata.saveHour = t.tm_hour;
metadata.saveMinute = t.tm_min;
metadata.saveDescription = desc;
metadata.totalPlayTime = _vm->getTotalPlayTime();
metadata.autoSave = autoSave;
metadata.sync(serializer);
return stream;
}
Common::Error RivenSaveLoad::saveGame(const int slot, const Common::String &description,
const Graphics::Surface *thumbnail, bool autoSave) {
// NOTE: This code is designed to only output a Mohawk archive
// for a Riven saved game. It's hardcoded to do this because
// (as of right now) this is the only place in the engine
// that requires this feature. If the time comes when other
// games need this, we should think about coming up with some
// more common way of outputting resources to an archive.
Common::String filename = buildSaveFilename(slot);
Common::OutSaveFile *saveFile = _saveFileMan->openForSaving(filename);
if (!saveFile)
return Common::kWritingFailed;
debug (0, "Saving game to \'%s\'", filename.c_str());
Common::MemoryWriteStreamDynamic *metaSection = genMETASection(description, autoSave);
Common::MemoryWriteStreamDynamic *nameSection = genNAMESection();
Common::MemoryWriteStreamDynamic *thmbSection = genTHMBSection(thumbnail);
Common::MemoryWriteStreamDynamic *varsSection = genVARSSection();
Common::MemoryWriteStreamDynamic *versSection = genVERSSection();
Common::MemoryWriteStreamDynamic *zipsSection = genZIPSSection();
// Let's calculate the file size!
uint32 fileSize = 194;
fileSize += metaSection->size();
fileSize += nameSection->size();
fileSize += thmbSection->size();
fileSize += varsSection->size();
fileSize += versSection->size();
fileSize += zipsSection->size();
// MHWK Header (8 bytes - total: 8)
saveFile->writeUint32BE(ID_MHWK);
saveFile->writeUint32BE(fileSize - 8);
// RSRC Header (20 bytes - total: 28)
saveFile->writeUint32BE(ID_RSRC);
saveFile->writeUint16BE(0x100); // Resource Version (1.0)
saveFile->writeUint16BE(1); // Compaction -- original saves have this too
saveFile->writeUint32BE(fileSize); // Subtract off the MHWK header size
saveFile->writeUint32BE(28); // Absolute offset: right after both headers
saveFile->writeUint16BE(102); // File Table Offset
saveFile->writeUint16BE(64); // File Table Size (4 bytes count + 6 entries * 10 bytes per entry)
// Type Table (4 bytes - total: 32)
saveFile->writeUint16BE(52); // String table offset After the Type Table Entries
saveFile->writeUint16BE(6); // 6 Type Table Entries
// Hardcode Entries (48 bytes - total: 80)
// The original engine relies on the entries being sorted by tag alphabetical order
// to optimize its lookup algorithm.
saveFile->writeUint32BE(ID_META);
saveFile->writeUint16BE(66); // Resource table offset
saveFile->writeUint16BE(54); // String table offset
saveFile->writeUint32BE(ID_NAME);
saveFile->writeUint16BE(72);
saveFile->writeUint16BE(56);
saveFile->writeUint32BE(ID_THMB);
saveFile->writeUint16BE(78);
saveFile->writeUint16BE(58);
saveFile->writeUint32BE(ID_VARS);
saveFile->writeUint16BE(84);
saveFile->writeUint16BE(60);
saveFile->writeUint32BE(ID_VERS);
saveFile->writeUint16BE(90);
saveFile->writeUint16BE(62);
saveFile->writeUint32BE(ID_ZIPS);
saveFile->writeUint16BE(96);
saveFile->writeUint16BE(64);
// Pseudo-String Table (2 bytes - total: 82)
saveFile->writeUint16BE(0); // We don't need a name list
// Pseudo-Name Tables (12 bytes - total: 94)
saveFile->writeUint16BE(0);
saveFile->writeUint16BE(0);
saveFile->writeUint16BE(0);
saveFile->writeUint16BE(0);
saveFile->writeUint16BE(0);
saveFile->writeUint16BE(0);
// META Section (Resource Table) (6 bytes - total: 100)
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(1);
// NAME Section (Resource Table) (6 bytes - total: 106)
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(2);
// THMB Section (Resource Table) (6 bytes - total: 112)
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(3);
// VARS Section (Resource Table) (6 bytes - total: 118)
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(4);
// VERS Section (Resource Table) (6 bytes - total: 124)
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(5);
// ZIPS Section (Resource Table) (6 bytes - total: 130)
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(1);
saveFile->writeUint16BE(6);
// File Table (4 bytes - total: 134)
saveFile->writeUint32BE(6);
// META Section (File Table) (10 bytes - total: 144)
saveFile->writeUint32BE(194);
saveFile->writeUint16BE(metaSection->size() & 0xFFFF);
saveFile->writeByte((metaSection->size() & 0xFF0000) >> 16);
saveFile->writeByte(0);
saveFile->writeUint16BE(0);
// NAME Section (File Table) (10 bytes - total: 154)
saveFile->writeUint32BE(194 + metaSection->size());
saveFile->writeUint16BE(nameSection->size() & 0xFFFF);
saveFile->writeByte((nameSection->size() & 0xFF0000) >> 16);
saveFile->writeByte(0);
saveFile->writeUint16BE(0);
// THMB Section (File Table) (10 bytes - total: 164)
saveFile->writeUint32BE(194 + metaSection->size() + nameSection->size());
saveFile->writeUint16BE(thmbSection->size() & 0xFFFF);
saveFile->writeByte((thmbSection->size() & 0xFF0000) >> 16);
saveFile->writeByte(0);
saveFile->writeUint16BE(0);
// VARS Section (File Table) (10 bytes - total: 174)
saveFile->writeUint32BE(194 + metaSection->size() + nameSection->size() + thmbSection->size());
saveFile->writeUint16BE(varsSection->size() & 0xFFFF);
saveFile->writeByte((varsSection->size() & 0xFF0000) >> 16);
saveFile->writeByte(0);
saveFile->writeUint16BE(0);
// VERS Section (File Table) (10 bytes - total: 184)
saveFile->writeUint32BE(194 + metaSection->size() + nameSection->size() + thmbSection->size() + varsSection->size());
saveFile->writeUint16BE(versSection->size() & 0xFFFF);
saveFile->writeByte((versSection->size() & 0xFF0000) >> 16);
saveFile->writeByte(0);
saveFile->writeUint16BE(0);
// ZIPS Section (File Table) (10 bytes - total: 194)
saveFile->writeUint32BE(194 + metaSection->size() + nameSection->size() + thmbSection->size() + varsSection->size() + versSection->size());
saveFile->writeUint16BE(zipsSection->size() & 0xFFFF);
saveFile->writeByte((zipsSection->size() & 0xFF0000) >> 16);
saveFile->writeByte(0);
saveFile->writeUint16BE(0);
saveFile->write(metaSection->getData(), metaSection->size());
saveFile->write(nameSection->getData(), nameSection->size());
saveFile->write(thmbSection->getData(), thmbSection->size());
saveFile->write(varsSection->getData(), varsSection->size());
saveFile->write(versSection->getData(), versSection->size());
saveFile->write(zipsSection->getData(), zipsSection->size());
saveFile->finalize();
delete saveFile;
delete metaSection;
delete nameSection;
delete thmbSection;
delete varsSection;
delete versSection;
delete zipsSection;
return Common::kNoError;
}
void RivenSaveLoad::deleteSave(const int slot) {
Common::String filename = buildSaveFilename(slot);
debug (0, "Deleting save file \'%s\'", filename.c_str());
g_system->getSavefileManager()->removeSavefile(filename);
}
} // End of namespace Mohawk
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