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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/str.h"
#include "common/stream.h"
#include "common/substream.h"
#include "gob/gob.h"
#include "gob/util.h"
#include "gob/dataio.h"
#include "gob/surface.h"
#include "gob/video.h"
#include "gob/cmpfile.h"
#include "gob/decfile.h"
namespace Gob {
DECFile::DECFile(GobEngine *vm, const Common::String &fileName,
uint16 width, uint16 height, uint8 bpp) : _vm(vm),
_width(width), _height(height), _bpp(bpp), _hasPadding(false), _backdrop(0) {
Common::SeekableReadStream *dec = _vm->_dataIO->getFile(fileName);
if (dec) {
Common::SeekableSubReadStreamEndian sub(dec, 0, dec->size(), false, DisposeAfterUse::YES);
load(sub, fileName);
return;
}
// File doesn't exist, try to open the big-endian'd alternate file
Common::String alternateFileName = fileName;
alternateFileName.setChar('_', 0);
dec = _vm->_dataIO->getFile(alternateFileName);
if (dec) {
Common::SeekableSubReadStreamEndian sub(dec, 0, dec->size(), true, DisposeAfterUse::YES);
// The big endian version pads a few fields to even size
_hasPadding = true;
load(sub, fileName);
return;
}
warning("DECFile::DECFile(): No such file \"%s\"", fileName.c_str());
}
DECFile::~DECFile() {
delete _backdrop;
for (LayerArray::iterator l = _layers.begin(); l != _layers.end(); ++l)
delete *l;
}
void DECFile::load(Common::SeekableSubReadStreamEndian &dec, const Common::String &fileName) {
dec.skip(2); // Unused
int16 backdropCount = dec.readUint16();
int16 layerCount = dec.readUint16();
// Sanity checks
if (backdropCount > 1)
warning("DECFile::load(): More than one backdrop (%d) in file \"%s\"",
backdropCount, fileName.c_str());
if (layerCount < 1)
warning("DECFile::load(): Less than one layer (%d) in file \"%s\"",
layerCount, fileName.c_str());
// Load the backdrop
if (backdropCount > 0) {
loadBackdrop(dec);
// We only support one backdrop, skip the rest
dec.skip((backdropCount - 1) * (13 + (_hasPadding ? 1 : 0)));
}
// Load the layers
_layers.reserve(MAX(0, layerCount - 1));
for (int i = 0; i < layerCount - 1; i++)
_layers.push_back(loadLayer(dec));
// Load the backdrop parts
if (backdropCount > 0)
loadParts(dec);
}
void DECFile::loadBackdrop(Common::SeekableSubReadStreamEndian &dec) {
// Interestingly, DEC files reference "FOO.LBM" instead of "FOO.CMP"
Common::String file = Util::setExtension(Util::readString(dec, 13), "");
if (_hasPadding)
dec.skip(1);
_backdrop = new CMPFile(_vm, file, _width, _height, _bpp);
}
CMPFile *DECFile::loadLayer(Common::SeekableSubReadStreamEndian &dec) {
Common::String file = Util::setExtension(Util::readString(dec, 13), "");
if (_hasPadding)
dec.skip(1);
return new CMPFile(_vm, file, _width, _height, _bpp);
}
void DECFile::loadParts(Common::SeekableSubReadStreamEndian &dec) {
dec.skip(13); // Name
if (_hasPadding)
dec.skip(1);
dec.skip(13); // File?
if (_hasPadding)
dec.skip(1);
uint16 partCount = dec.readUint16();
_parts.resize(partCount);
for (PartArray::iterator p = _parts.begin(); p != _parts.end(); ++p)
loadPart(*p, dec);
}
void DECFile::loadPart(Part &part, Common::SeekableSubReadStreamEndian &dec) {
part.layer = dec.readByte() - 1;
part.part = dec.readByte();
dec.skip(1); // Unknown
part.x = dec.readUint16();
part.y = dec.readUint16();
part.transp = dec.readByte() != 0;
}
void DECFile::draw(Surface &dest) const {
drawBackdrop(dest);
for (PartArray::const_iterator p = _parts.begin(); p != _parts.end(); ++p)
drawLayer(dest, p->layer, p->part, p->x, p->y, p->transp ? 0 : -1);
}
void DECFile::drawBackdrop(Surface &dest) const {
if (!_backdrop)
return;
_backdrop->draw(dest, 0, 0, 0);
}
void DECFile::drawLayer(Surface &dest, uint16 layer, uint16 part,
uint16 x, uint16 y, int32 transp) const {
if (layer >= _layers.size())
return;
_layers[layer]->draw(dest, part, x, y, transp);
}
} // End of namespace Gob
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