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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 "common/savefile.h"
#include "graphics/thumbnail.h"
#include "illusions/illusions.h"
#include "illusions/gamestate.h"
namespace Illusions {
#define ILLUSIONS_SAVEGAME_VERSION 0
IllusionsEngine::kReadSaveHeaderError IllusionsEngine::readSaveHeader(Common::SeekableReadStream *in, bool loadThumbnail, SaveHeader &header) {
header.version = in->readUint32LE();
if (header.version > ILLUSIONS_SAVEGAME_VERSION)
return kRSHEInvalidVersion;
byte descriptionLen = in->readByte();
header.description = "";
while (descriptionLen--)
header.description += (char)in->readByte();
if (loadThumbnail) {
Graphics::loadThumbnail(*in, header.thumbnail);
} else {
Graphics::skipThumbnail(*in);
}
// Not used yet, reserved for future usage
header.gameID = in->readByte();
header.flags = in->readUint32LE();
header.saveDate = in->readUint32LE();
header.saveTime = in->readUint32LE();
header.playTime = in->readUint32LE();
return ((in->eos() || in->err()) ? kRSHEIoError : kRSHENoError);
}
bool IllusionsEngine::savegame(const char *filename, const char *description) {
Common::OutSaveFile *out;
if (!(out = g_system->getSavefileManager()->openForSaving(filename))) {
warning("Can't create file '%s', game not saved", filename);
return false;
}
TimeDate curTime;
g_system->getTimeAndDate(curTime);
// Header start
out->writeUint32LE(ILLUSIONS_SAVEGAME_VERSION);
byte descriptionLen = strlen(description);
out->writeByte(descriptionLen);
out->write(description, descriptionLen);
// TODO Probably pre-generate the thumbnail before the internal menu system is
// called to have a thumbnail without the menu system itself on it.
// Use the automatic thumbnail generation only when the ScummVM save dialog is used.
Graphics::saveThumbnail(*out);
// Not used yet, reserved for future usage
out->writeByte(0);
out->writeUint32LE(0);
uint32 saveDate = ((curTime.tm_mday & 0xFF) << 24) | (((curTime.tm_mon + 1) & 0xFF) << 16) | ((curTime.tm_year + 1900) & 0xFFFF);
uint32 saveTime = ((curTime.tm_hour & 0xFF) << 16) | (((curTime.tm_min) & 0xFF) << 8) | ((curTime.tm_sec) & 0xFF);
uint32 playTime = g_engine->getTotalPlayTime() / 1000;
out->writeUint32LE(saveDate);
out->writeUint32LE(saveTime);
out->writeUint32LE(playTime);
// Header end
_gameState->write(out);
out->finalize();
delete out;
return true;
}
bool IllusionsEngine::loadgame(const char *filename) {
Common::InSaveFile *in;
if (!(in = g_system->getSavefileManager()->openForLoading(filename))) {
warning("Can't open file '%s', game not loaded", filename);
return false;
}
SaveHeader header;
kReadSaveHeaderError errorCode = readSaveHeader(in, false, header);
if (errorCode != kRSHENoError) {
warning("Error loading savegame '%s'", filename);
delete in;
return false;
}
g_engine->setTotalPlayTime(header.playTime * 1000);
_gameState->read(in);
delete in;
return true;
}
Common::Error IllusionsEngine::loadGameState(int slot) {
_resumeFromSavegameRequested = false;
const char *fileName = getSavegameFilename(slot);
if (!loadgame(fileName))
return Common::kReadingFailed;
_resumeFromSavegameRequested = true;
_savegameSlotNum = slot;
return Common::kNoError;
}
Common::Error IllusionsEngine::saveGameState(int slot, const Common::String &description) {
const char *fileName = getSavegameFilename(slot);
if (!savegame(fileName, description.c_str()))
return Common::kWritingFailed;
return Common::kNoError;
}
Common::Error IllusionsEngine::removeGameState(int slot) {
Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
Common::String filename = Illusions::IllusionsEngine::getSavegameFilename(_targetName, slot);
saveFileMan->removeSavefile(filename.c_str());
return Common::kNoError;
}
const char *IllusionsEngine::getSavegameFilename(int num) {
static Common::String filename;
filename = getSavegameFilename(_targetName, num);
return filename.c_str();
}
Common::String IllusionsEngine::getSavegameFilename(const Common::String &target, int num) {
assert(num >= 0 && num <= 999);
return Common::String::format("%s.%03d", target.c_str(), num);
}
} // End of namespace Illusions
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