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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/scummsys.h"
#include "common/config-manager.h"
#include "common/debug-channels.h"
#include "common/events.h"
#include "engines/util.h"
#include "graphics/scaler.h"
#include "graphics/thumbnail.h"
#include "xeen/xeen.h"
#include "xeen/resources.h"
namespace Xeen {
XeenEngine::XeenEngine(OSystem *syst, const XeenGameDescription *gameDesc)
: _gameDescription(gameDesc), Engine(syst), _randomSource("Xeen") {
_debugger = nullptr;
}
XeenEngine::~XeenEngine() {
delete _debugger;
}
void XeenEngine::initialize() {
// Set up debug channels
DebugMan.addDebugChannel(kDebugPath, "Path", "Pathfinding debug level");
DebugMan.addDebugChannel(kDebugScripts, "scripts", "Game scripts");
DebugMan.addDebugChannel(kDebugGraphics, "graphics", "Graphics handling");
DebugMan.addDebugChannel(kDebugSound, "sound", "Sound and Music handling");
// Create sub-objects of the engine
_debugger = new Debugger(this);
Resources::init(this);
// Set graphics mode
initGraphics(320, 200, false);
// If requested, load a savegame instead of showing the intro
if (ConfMan.hasKey("save_slot")) {
int saveSlot = ConfMan.getInt("save_slot");
if (saveSlot >= 0 && saveSlot <= 999)
_loadSaveSlot = saveSlot;
}
}
Common::Error XeenEngine::run() {
initialize();
playGame();
return Common::kNoError;
}
int XeenEngine::getRandomNumber(int maxNumber) {
return _randomSource.getRandomNumber(maxNumber);
}
Common::Error XeenEngine::saveGameState(int slot, const Common::String &desc) {
Common::OutSaveFile *out = g_system->getSavefileManager()->openForSaving(
generateSaveName(slot));
if (!out)
return Common::kCreatingFileFailed;
XeenSavegameHeader header;
header._saveName = desc;
writeSavegameHeader(out, header);
Common::Serializer s(nullptr, out);
synchronize(s);
out->finalize();
delete out;
return Common::kNoError;
}
Common::Error XeenEngine::loadGameState(int slot) {
Common::InSaveFile *saveFile = g_system->getSavefileManager()->openForLoading(
generateSaveName(slot));
if (!saveFile)
return Common::kReadingFailed;
Common::Serializer s(saveFile, nullptr);
// Load the savaegame header
XeenSavegameHeader header;
if (!readSavegameHeader(saveFile, header))
error("Invalid savegame");
if (header._thumbnail) {
header._thumbnail->free();
delete header._thumbnail;
}
// Load most of the savegame data
synchronize(s);
delete saveFile;
return Common::kNoError;
}
Common::String XeenEngine::generateSaveName(int slot) {
return Common::String::format("%s.%03d", _targetName.c_str(), slot);
}
bool XeenEngine::canLoadGameStateCurrently() {
return true;
}
bool XeenEngine::canSaveGameStateCurrently() {
return true;
}
void XeenEngine::synchronize(Common::Serializer &s) {
// TODO
}
const char *const SAVEGAME_STR = "XEEN";
#define SAVEGAME_STR_SIZE 6
bool XeenEngine::readSavegameHeader(Common::InSaveFile *in, XeenSavegameHeader &header) {
char saveIdentBuffer[SAVEGAME_STR_SIZE + 1];
header._thumbnail = nullptr;
// Validate the header Id
in->read(saveIdentBuffer, SAVEGAME_STR_SIZE + 1);
if (strncmp(saveIdentBuffer, SAVEGAME_STR, SAVEGAME_STR_SIZE))
return false;
header._version = in->readByte();
if (header._version > XEEN_SAVEGAME_VERSION)
return false;
// Read in the string
header._saveName.clear();
char ch;
while ((ch = (char)in->readByte()) != '\0')
header._saveName += ch;
// Get the thumbnail
header._thumbnail = Graphics::loadThumbnail(*in);
if (!header._thumbnail)
return false;
// Read in save date/time
header._year = in->readSint16LE();
header._month = in->readSint16LE();
header._day = in->readSint16LE();
header._hour = in->readSint16LE();
header._minute = in->readSint16LE();
header._totalFrames = in->readUint32LE();
return true;
}
void XeenEngine::writeSavegameHeader(Common::OutSaveFile *out, XeenSavegameHeader &header) {
// Write out a savegame header
out->write(SAVEGAME_STR, SAVEGAME_STR_SIZE + 1);
out->writeByte(XEEN_SAVEGAME_VERSION);
// Write savegame name
out->writeString(header._saveName);
out->writeByte('\0');
// Write a thumbnail of the screen
/*
uint8 thumbPalette[768];
_screen->getPalette(thumbPalette);
Graphics::Surface saveThumb;
::createThumbnail(&saveThumb, (const byte *)_screen->getPixels(),
_screen->w, _screen->h, thumbPalette);
Graphics::saveThumbnail(*out, saveThumb);
saveThumb.free();
*/
// Write out the save date/time
TimeDate td;
g_system->getTimeAndDate(td);
out->writeSint16LE(td.tm_year + 1900);
out->writeSint16LE(td.tm_mon + 1);
out->writeSint16LE(td.tm_mday);
out->writeSint16LE(td.tm_hour);
out->writeSint16LE(td.tm_min);
// out->writeUint32LE(_events->getFrameCounter());
}
void XeenEngine::playGame() {
}
} // End of namespace Xeen
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