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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 "teenagent/surface.h"
#include "teenagent/pack.h"
#include "teenagent/teenagent.h"
#include "common/stream.h"
#include "common/debug.h"
namespace TeenAgent {
Surface::Surface() : x(0), y(0) {
}
Surface::~Surface() {
free();
}
void Surface::load(Common::SeekableReadStream &stream, Type type) {
debugC(0, kDebugSurface, "load()");
free();
x = y = 0;
uint16 w_ = stream.readUint16LE();
uint16 h_ = stream.readUint16LE();
if (type != kTypeLan) {
uint16 pos = stream.readUint16LE();
x = pos % kScreenWidth;
y = pos / kScreenWidth;
}
debugC(0, kDebugSurface, "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()) {
debugC(0, kDebugSurface, "invalid surface %ux%u -> %u,%u", w_, h_, x, y);
return;
}
debugC(0, kDebugSurface, "creating surface %ux%u -> %u,%u", w_, h_, x, y);
create(w_, h_, Graphics::PixelFormat::createFormatCLUT8());
stream.read(pixels, w_ * h_);
}
Common::Rect Surface::render(Graphics::Surface *surface, int dx, int dy, bool mirror, Common::Rect srcRect, uint zoom) const {
if (srcRect.isEmpty()) {
srcRect = Common::Rect(0, 0, w, h);
}
Common::Rect dstRect(x + dx, y + dy, x + dx + zoom * srcRect.width() / 256, y + dy + zoom * srcRect.height() / 256);
if (dstRect.left < 0) {
srcRect.left = -dstRect.left;
dstRect.left = 0;
}
if (dstRect.right > surface->w) {
srcRect.right -= dstRect.right - surface->w;
dstRect.right = surface->w;
}
if (dstRect.top < 0) {
srcRect.top -= dstRect.top;
dstRect.top = 0;
}
if (dstRect.bottom > surface->h) {
srcRect.bottom -= dstRect.bottom - surface->h;
dstRect.bottom = surface->h;
}
if (srcRect.isEmpty() || dstRect.isEmpty())
return Common::Rect();
if (zoom == 256) {
const byte *src = (const byte *)getBasePtr(0, srcRect.top);
byte *dstBase = (byte *)surface->getBasePtr(dstRect.left, dstRect.top);
for (int i = srcRect.top; i < srcRect.bottom; ++i) {
byte *dst = dstBase;
for (int j = srcRect.left; j < srcRect.right; ++j) {
byte p = src[(mirror ? w - j - 1 : j)];
if (p != 0xff)
*dst++ = p;
else
++dst;
}
dstBase += surface->pitch;
src += pitch;
}
} else {
byte *dst = (byte *)surface->getBasePtr(dstRect.left, dstRect.top);
for (int i = 0; i < dstRect.height(); ++i) {
for (int j = 0; j < dstRect.width(); ++j) {
int px = j * 256 / zoom;
const byte *src = (const byte *)getBasePtr(srcRect.left + (mirror ? w - px - 1 : px), srcRect.top + i * 256 / zoom);
byte p = *src;
if (p != 0xff)
dst[j] = p;
}
dst += surface->pitch;
}
}
return dstRect;
}
} // End of namespace TeenAgent
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