scummvm/engines/dragons/dragonobd.cpp
2020-02-25 14:43:42 +01:00

64 lines
2.0 KiB
C++

/* 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/memstream.h"
#include "dragons/dragonobd.h"
#include "dragons/bigfile.h"
namespace Dragons {
DragonOBD::DragonOBD(BigfileArchive *bigfileArchive) {
uint32 size;
byte *optData = bigfileArchive->load("dragon.opt", size);
_optReadStream = new Common::MemoryReadStream(optData, size, DisposeAfterUse::YES);
byte *sptData = bigfileArchive->load("dragon.spt", size);
_sptReadStream = new Common::MemoryReadStream(sptData, size, DisposeAfterUse::YES);
_data = bigfileArchive->load("dragon.obd", _dataSize);
}
byte *DragonOBD::getObdAtOffset(uint32 offset) {
assert(_data);
assert(offset < _dataSize);
return &_data[offset];
}
DragonOBD::~DragonOBD() {
if (_data) {
delete _data;
}
delete _optReadStream;
delete _sptReadStream;
}
byte *DragonOBD::getFromOpt(uint32 index) {
_optReadStream->seek(index * 8);
return getObdAtOffset(_optReadStream->readUint32LE());
}
byte *DragonOBD::getFromSpt(uint32 index) {
_sptReadStream->seek(index * 4);
return getObdAtOffset(_sptReadStream->readUint32LE());
}
} // End of namespace Dragons