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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "common/savefile.h"
#include "graphics/thumbnail.h"
#include "neverhood/neverhood.h"
#include "neverhood/gamemodule.h"
#include "neverhood/gamevars.h"
namespace Neverhood {
#define NEVERHOOD_SAVEGAME_VERSION 0
WARN_UNUSED_RESULT NeverhoodEngine::kReadSaveHeaderError NeverhoodEngine::readSaveHeader(Common::SeekableReadStream *in, SaveHeader &header, bool skipThumbnail) {
header.version = in->readUint32LE();
if (header.version > NEVERHOOD_SAVEGAME_VERSION)
return kRSHEInvalidVersion;
byte descriptionLen = in->readByte();
header.description = "";
while (descriptionLen--)
header.description += (char)in->readByte();
if (!Graphics::loadThumbnail(*in, header.thumbnail, skipThumbnail)) {
return kRSHEIoError;
}
// 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 NeverhoodEngine::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(NEVERHOOD_SAVEGAME_VERSION);
byte descriptionLen = strlen(description);
out->writeByte(descriptionLen);
out->write(description, descriptionLen);
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
_gameVars->setGlobalVar(V_CURRENT_SCENE, _gameState.sceneNum);
_gameVars->setGlobalVar(V_CURRENT_SCENE_WHICH, _gameState.which);
_gameVars->saveState(out);
out->finalize();
delete out;
return true;
}
bool NeverhoodEngine::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, header);
if (errorCode != kRSHENoError) {
warning("Error loading savegame '%s'", filename);
delete in;
return false;
}
g_engine->setTotalPlayTime(header.playTime * 1000);
_gameVars->loadState(in);
// If user has changed NHC it may have changed the correct solution for
// crystal puzzle. If it did and it was already solved, changed solors to the new solution
// if it wasn't solved, just let the code do full reinit.
if (_gameVars->getGlobalVar(V_CRYSTAL_COLORS_INIT)) {
TextResource textResource(this);
const char *textStart, *textEnd;
bool colorsChanged = false, colorsAreCorrect = true;
textResource.load(0x46691611);
textStart = textResource.getString(0, textEnd);
byte newCorrectColorNum[5];
for (uint index = 0; index < 5; index++) {
newCorrectColorNum[index] = GameModule::parseCrystalColor(textStart[index]);
}
for (uint index = 0; index < 5; index++) {
if (_gameVars->getSubVar(VA_GOOD_CRYSTAL_COLORS, index) != newCorrectColorNum[index]) {
colorsChanged = true;
}
if (_gameVars->getSubVar(VA_GOOD_CRYSTAL_COLORS, index) != _gameVars->getSubVar(VA_CURR_CRYSTAL_COLORS, index)) {
colorsAreCorrect = false;
}
}
if (colorsChanged && colorsAreCorrect) {
for (uint index = 0; index < 5; index++) {
_gameVars->setSubVar(VA_GOOD_CRYSTAL_COLORS, index, newCorrectColorNum[index]);
_gameVars->setSubVar(VA_CURR_CRYSTAL_COLORS, index, newCorrectColorNum[index]);
}
}
if (colorsChanged && !colorsAreCorrect) {
_gameVars->setGlobalVar(V_CRYSTAL_COLORS_INIT, 0);
}
}
_gameState.sceneNum = _gameVars->getGlobalVar(V_CURRENT_SCENE);
_gameState.which = _gameVars->getGlobalVar(V_CURRENT_SCENE_WHICH);
_gameModule->requestRestoreGame();
delete in;
return true;
}
Common::Error NeverhoodEngine::loadGameState(int slot) {
Common::String fileName = getSaveStateName(slot);
if (!loadgame(fileName.c_str()))
return Common::kReadingFailed;
return Common::kNoError;
}
Common::Error NeverhoodEngine::saveGameState(int slot, const Common::String &description, bool isAutosave) {
Common::String fileName = getSaveStateName(slot);
if (!savegame(fileName.c_str(), description.c_str()))
return Common::kWritingFailed;
return Common::kNoError;
}
Common::Error NeverhoodEngine::removeGameState(int slot) {
Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
Common::String filename = Neverhood::NeverhoodEngine::getSavegameFilename(_targetName, slot);
saveFileMan->removeSavefile(filename.c_str());
return Common::kNoError;
}
Common::String NeverhoodEngine::getSaveStateName(int slot) const {
return getSavegameFilename(_targetName, slot);
}
Common::String NeverhoodEngine::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 Neverhood
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