diff options
Diffstat (limited to 'engines/illusions/gamestate.cpp')
-rw-r--r-- | engines/illusions/gamestate.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/engines/illusions/gamestate.cpp b/engines/illusions/gamestate.cpp new file mode 100644 index 0000000000..5f6e17cc76 --- /dev/null +++ b/engines/illusions/gamestate.cpp @@ -0,0 +1,75 @@ +/* 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 |