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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.
*
* $URL$
* $Id$
*/
#include "surface.h"
#include "pack.h"
#include "common/stream.h"
#include "common/debug.h"
using namespace TeenAgent;
Surface::Surface() : x(0), y(0) {
memset(flags, 0, sizeof(flags));
}
void Surface::load(Common::SeekableReadStream *stream, Type type) {
//debug(0, "load()");
free();
x = y = 0;
memset(flags, 0, sizeof(flags));
if (type == TypeOn) {
byte fn = stream->readByte();
if (stream->eos())
return;
for(byte i = 0; i < fn; ++i) {
flags[i] = stream->readUint16LE();
debug(0, "flags[%u] = %u (0x%04x)", i, flags[i], flags[i]);
}
}
uint16 w_ = stream->readUint16LE();
uint16 h_ = stream->readUint16LE();
if (type != TypeLan) {
uint16 pos = stream->readUint16LE();
x = pos % 320;
y = pos / 320;
}
//debug(0, "declared info: %ux%u (%04xx%04x) -> %u,%u", w_, h_, w_, h_, x, y);
if (stream->eos() || w_ == 0)
return;
if (w_ * h_ > stream->size()) {//rough but working
debug(0, "invalid surface %ux%u -> %u,%u", w_, h_, x, y);
return;
}
//debug(0, "creating surface %ux%u -> %u,%u", w_, h_, x, y);
create(w_, h_, 1);
stream->read(pixels, w_ * h_);
}
void Surface::render(Graphics::Surface * surface, int dx, int dy, bool mirror) {
assert(x + w <= surface->w);
assert(y + h <= surface->h);
byte *src = (byte *)pixels;
byte *dst = (byte *)surface->getBasePtr(dx + x, dy + y);
for(int i = 0; i < h; ++i) {
for(int j = 0; j < w; ++j) {
byte p = src[j];
if (p != 0xff)
dst[mirror? w - j - 1: j] = p;
}
dst += surface->pitch;
src += pitch;
}
}
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