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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 "illusions/gamestate.h"
namespace Illusions {
GameState::GameState()
: _writeBufferSize(0), _writeBuffer(0), _readStream(0) {
}
GameState::~GameState() {
free(_writeBuffer);
}
bool GameState::readState(uint32 &sceneId, uint32 &threadId) {
sceneId = _readStream->readUint32LE();
threadId = _readStream->readUint32LE();
return readStateInternal(_readStream);
}
void GameState::writeState(uint32 sceneId, uint32 threadId) {
Common::WriteStream *writeStream = newWriteStream();
writeStream->writeUint32LE(sceneId);
writeStream->writeUint32LE(threadId);
writeStateInternal(writeStream);
}
void GameState::read(Common::ReadStream *in) {
uint32 size = in->readUint32LE();
_readStream = in->readStream(size);
}
void GameState::write(Common::WriteStream *out) {
out->writeUint32LE(_writeBufferSize);
out->write(_writeBuffer, _writeBufferSize);
}
void GameState::deleteReadStream() {
delete _readStream;
_readStream = 0;
}
Common::WriteStream *GameState::newWriteStream() {
if (_writeBufferSize == 0 || !_writeBuffer) {
_writeBufferSize = calcWriteBufferSize();
_writeBuffer = (byte*)malloc(_writeBufferSize);
}
return new Common::MemoryWriteStream(_writeBuffer, _writeBufferSize);
}
uint32 GameState::calcWriteBufferSize() {
return calcWriteBufferSizeInternal() + 4 + 4;
}
} // End of namespace Illusions
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