mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-16 22:58:09 +00:00
392 lines
11 KiB
C++
392 lines
11 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "mohawk/riven.h"
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#include "mohawk/riven_saveload.h"
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#include "common/util.h"
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namespace Mohawk {
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RivenSaveLoad::RivenSaveLoad(MohawkEngine_Riven *vm, Common::SaveFileManager *saveFileMan) : _vm(vm), _saveFileMan(saveFileMan) {
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_loadFile = new MohawkFile();
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}
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RivenSaveLoad::~RivenSaveLoad() {
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delete _loadFile;
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}
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Common::StringList RivenSaveLoad::generateSaveGameList() {
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return _saveFileMan->listSavefiles("*.rvn");
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}
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// Note: The stack numbers we use do not match up to what the original executable,
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// so, match them ;)
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static uint16 mapOldStackIDToNew(uint16 oldID) {
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switch (oldID) {
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case 1:
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return ospit;
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case 2:
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return pspit;
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case 3:
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return rspit;
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case 4:
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return tspit;
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case 5:
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return bspit;
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case 6:
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return gspit;
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case 7:
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return jspit;
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case 8:
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return aspit;
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}
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error ("Unknown old stack ID %d", oldID);
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return 0;
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}
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static uint16 mapNewStackIDToOld(uint16 newID) {
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switch (newID) {
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case aspit:
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return 8;
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case bspit:
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return 5;
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case gspit:
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return 6;
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case jspit:
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return 7;
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case ospit:
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return 1;
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case pspit:
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return 2;
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case rspit:
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return 3;
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case tspit:
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return 4;
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}
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error ("Unknown new stack ID %d", newID);
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return 0;
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}
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bool RivenSaveLoad::loadGame(Common::String filename) {
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if (_vm->getFeatures() & GF_DEMO) // Don't load games in the demo
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return false;
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Common::InSaveFile *loadFile;
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if (!(loadFile = _saveFileMan->openForLoading(filename.c_str())))
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return false;
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debug (0, "Loading game from \'%s\'", filename.c_str());
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_loadFile->open(loadFile);
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// First, let's make sure we're using a saved game file from this version of Riven by checking the VERS resource
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Common::SeekableReadStream *vers = _loadFile->getRawData(ID_VERS, 1);
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uint32 saveGameVersion = vers->readUint32BE();
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delete vers;
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if ((saveGameVersion == kCDSaveGameVersion && (_vm->getFeatures() & GF_DVD))
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|| (saveGameVersion == kDVDSaveGameVersion && !(_vm->getFeatures() & GF_DVD))) {
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warning ("Incompatible saved game versions. No support for this yet.");
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delete _loadFile;
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return false;
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}
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// Now, we'll read in the variable values.
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Common::SeekableReadStream *vars = _loadFile->getRawData(ID_VARS, 1);
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Common::Array<uint32> rawVariables;
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while (!vars->eos()) {
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vars->readUint32BE(); // Unknown (Stack?)
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vars->readUint32BE(); // Unknown (0 or 1)
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rawVariables.push_back(vars->readUint32BE());
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}
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delete vars;
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// Next, we set the variables based on the name found by the index in the VARS resource.
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// TODO: Merge with code in mohawk.cpp for loading names?
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Common::SeekableReadStream *names = _loadFile->getRawData(ID_NAME, 1);
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uint16 namesCount = names->readUint16BE();
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uint16 *stringOffsets = new uint16[namesCount];
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for (uint16 i = 0; i < namesCount; i++)
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stringOffsets[i] = names->readUint16BE();
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for (uint16 i = 0; i < namesCount; i++)
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names->readUint16BE(); // Skip unknown values
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uint32 curNamesPos = names->pos();
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uint16 stackID = 0;
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uint16 cardID = 0;
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for (uint32 i = 0; i < rawVariables.size() && i < namesCount && !names->eos(); i++) {
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names->seek(curNamesPos);
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names->seek(stringOffsets[i], SEEK_CUR);
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Common::String name;
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char c = (char)names->readByte();
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while (c) {
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name += c;
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c = (char)names->readByte();
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}
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uint32 *var = _vm->matchVarToString(name);
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*var = rawVariables[i];
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if (!scumm_stricmp(name.c_str(), "CurrentStackID"))
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stackID = mapOldStackIDToNew(rawVariables[i]);
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else if (!scumm_stricmp(name.c_str(), "CurrentCardID"))
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cardID = rawVariables[i];
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else if (!scumm_stricmp(name.c_str(), "ReturnStackID"))
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*var = mapOldStackIDToNew(rawVariables[i]);
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}
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_vm->changeToStack(stackID);
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_vm->changeToCard(cardID);
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delete names;
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delete[] stringOffsets;
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// Reset zip mode data
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_vm->_zipModeData.clear();
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// Finally, we load in zip mode data.
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Common::SeekableReadStream *zips = _loadFile->getRawData(ID_ZIPS, 1);
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uint16 zipsRecordCount = zips->readUint16BE();
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for (uint16 i = 0; i < zipsRecordCount; i++) {
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ZipMode zip;
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uint16 zipsNameLength = zips->readUint16BE();
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for (uint16 j = 0; j < zipsNameLength; j++)
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zip.name += zips->readByte();
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zip.id = zips->readUint16BE();
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_vm->_zipModeData.push_back(zip);
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}
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delete zips;
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delete _loadFile;
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_loadFile = NULL;
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return true;
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}
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Common::MemoryWriteStreamDynamic *RivenSaveLoad::genVERSSection() {
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Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic();
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if (_vm->getFeatures() & GF_DVD)
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stream->writeUint32BE(kDVDSaveGameVersion);
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else
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stream->writeUint32BE(kCDSaveGameVersion);
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return stream;
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}
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Common::MemoryWriteStreamDynamic *RivenSaveLoad::genVARSSection() {
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Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic();
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for (uint32 i = 0; i < _vm->getVarCount(); i++) {
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stream->writeUint32BE(0); // Unknown
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stream->writeUint32BE(0); // Unknown
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stream->writeUint32BE(_vm->getGlobalVar(i));
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}
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return stream;
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}
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Common::MemoryWriteStreamDynamic *RivenSaveLoad::genNAMESection() {
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Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic();
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stream->writeUint16BE((uint16)_vm->getVarCount());
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uint16 curPos = 0;
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for (uint16 i = 0; i < _vm->getVarCount(); i++) {
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stream->writeUint16BE(curPos);
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curPos += _vm->getGlobalVarName(i).size() + 1;
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}
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for (uint16 i = 0; i < _vm->getVarCount(); i++)
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stream->writeUint16BE(i);
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for (uint16 i = 0; i < _vm->getVarCount(); i++) {
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stream->write(_vm->getGlobalVarName(i).c_str(), _vm->getGlobalVarName(i).size());
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stream->writeByte(0);
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}
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return stream;
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}
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Common::MemoryWriteStreamDynamic *RivenSaveLoad::genZIPSSection() {
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Common::MemoryWriteStreamDynamic *stream = new Common::MemoryWriteStreamDynamic();
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stream->writeUint16BE(_vm->_zipModeData.size());
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for (uint16 i = 0; i < _vm->_zipModeData.size(); i++) {
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stream->writeUint16BE(_vm->_zipModeData[i].name.size());
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stream->write(_vm->_zipModeData[i].name.c_str(), _vm->_zipModeData[i].name.size());
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stream->writeUint16BE(_vm->_zipModeData[i].id);
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}
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return stream;
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}
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bool RivenSaveLoad::saveGame(Common::String filename) {
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// Note, this code is still WIP. It works quite well for now.
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// Make sure we have the right extension
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if (!filename.hasSuffix(".rvn") && !filename.hasSuffix(".RVN"))
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filename += ".rvn";
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// Convert class variables to variable numbers
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*_vm->matchVarToString("currentstackid") = mapNewStackIDToOld(_vm->getCurStack());
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*_vm->matchVarToString("currentcardid") = _vm->getCurCard();
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*_vm->matchVarToString("returnstackid") = mapNewStackIDToOld(*_vm->matchVarToString("returnstackid"));
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Common::OutSaveFile *saveFile;
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if (!(saveFile = _saveFileMan->openForSaving(filename.c_str())))
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return false;
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debug (0, "Saving game to \'%s\'", filename.c_str());
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Common::MemoryWriteStreamDynamic *versSection = genVERSSection();
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Common::MemoryWriteStreamDynamic *nameSection = genNAMESection();
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Common::MemoryWriteStreamDynamic *varsSection = genVARSSection();
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Common::MemoryWriteStreamDynamic *zipsSection = genZIPSSection();
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// Let's calculate the file size!
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uint32 fileSize = 0;
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fileSize += versSection->size();
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fileSize += nameSection->size();
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fileSize += varsSection->size();
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fileSize += zipsSection->size();
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fileSize += 16; // RSRC Header
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fileSize += 4; // Type Table Header
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fileSize += 4 * 8; // Type Table Entries
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fileSize += 2; // Pseudo-Name entries
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// IFF Header
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saveFile->writeUint32BE(ID_MHWK);
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saveFile->writeUint32BE(fileSize);
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// RSRC Header
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saveFile->writeUint32BE(ID_RSRC);
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saveFile->writeUint32BE(16); // Size of RSRC
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saveFile->writeUint32BE(fileSize + 8); // Add on the 8 from the IFF header
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saveFile->writeUint32BE(28); // IFF + RSRC
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saveFile->writeUint16BE(62); // File Table Offset
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saveFile->writeUint16BE(44); // 4 + 4 * 10
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//Type Table
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saveFile->writeUint16BE(36); // After the Type Table Entries
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saveFile->writeUint16BE(4); // 4 Type Table Entries
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// Hardcode Entries
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saveFile->writeUint32BE(ID_VERS);
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saveFile->writeUint16BE(38);
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saveFile->writeUint16BE(36);
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saveFile->writeUint32BE(ID_NAME);
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saveFile->writeUint16BE(44);
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saveFile->writeUint16BE(36);
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saveFile->writeUint32BE(ID_VARS);
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saveFile->writeUint16BE(50);
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saveFile->writeUint16BE(36);
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saveFile->writeUint32BE(ID_ZIPS);
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saveFile->writeUint16BE(56);
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saveFile->writeUint16BE(36);
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// Pseudo-Name Table/Name List
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saveFile->writeUint16BE(0); // We don't need a name list
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// VERS Section (Resource Table)
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saveFile->writeUint16BE(1);
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saveFile->writeUint16BE(1);
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saveFile->writeUint16BE(1);
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// NAME Section (Resource Table)
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saveFile->writeUint16BE(1);
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saveFile->writeUint16BE(1);
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saveFile->writeUint16BE(2);
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// VARS Section (Resource Table)
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saveFile->writeUint16BE(1);
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saveFile->writeUint16BE(1);
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saveFile->writeUint16BE(3);
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// ZIPS Section (Resource Table)
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saveFile->writeUint16BE(1);
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saveFile->writeUint16BE(1);
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saveFile->writeUint16BE(4);
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// File Table
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saveFile->writeUint32BE(4);
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// VERS Section (File Table)
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saveFile->writeUint32BE(134);
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saveFile->writeUint16BE(versSection->size() & 0xFFFF);
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saveFile->writeByte((versSection->size() & 0xFF0000) >> 16);
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saveFile->writeByte(0);
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saveFile->writeUint16BE(0);
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// NAME Section (File Table)
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saveFile->writeUint32BE(134 + versSection->size());
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saveFile->writeUint16BE(nameSection->size() & 0xFFFF);
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saveFile->writeByte((nameSection->size() & 0xFF0000) >> 16);
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saveFile->writeByte(0);
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saveFile->writeUint16BE(0);
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// VARS Section (File Table)
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saveFile->writeUint32BE(134 + versSection->size() + nameSection->size());
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saveFile->writeUint16BE(varsSection->size() & 0xFFFF);
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saveFile->writeByte((varsSection->size() & 0xFF0000) >> 16);
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saveFile->writeByte(0);
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saveFile->writeUint16BE(0);
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// ZIPS Section (File Table)
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saveFile->writeUint32BE(134 + versSection->size() + nameSection->size() + varsSection->size());
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saveFile->writeUint16BE(zipsSection->size() & 0xFFFF);
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saveFile->writeByte((zipsSection->size() & 0xFF0000) >> 16);
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saveFile->writeByte(0);
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saveFile->writeUint16BE(0);
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saveFile->write(versSection->getData(), versSection->size());
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saveFile->write(nameSection->getData(), nameSection->size());
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saveFile->write(varsSection->getData(), varsSection->size());
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saveFile->write(zipsSection->getData(), zipsSection->size());
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saveFile->finalize();
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delete saveFile;
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delete versSection;
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delete nameSection;
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delete varsSection;
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delete zipsSection;
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return true;
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}
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void RivenSaveLoad::deleteSave(Common::String saveName) {
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debug (0, "Deleting save file \'%s\'", saveName.c_str());
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_saveFileMan->removeSavefile(saveName.c_str());
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}
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} // End of namespace Mohawk
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