120 lines
3.0 KiB
C++
120 lines
3.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ultima/ultima8/misc/common_types.h"
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#include "ultima/ultima8/gfx/shape_frame.h"
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#include "ultima/ultima8/gfx/raw_shape_frame.h"
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namespace Ultima {
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namespace Ultima8 {
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ShapeFrame::ShapeFrame(const RawShapeFrame *rawframe) :
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_width(_surface.w), _height(_surface.h),
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_xoff(rawframe->_xoff), _yoff(rawframe->_yoff),
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_keycolor(0xFF) {
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_surface.create(rawframe->_width, rawframe->_height, Graphics::PixelFormat::createFormatCLUT8());
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// load adjusting keycolor until success
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if (!load(rawframe, _keycolor)) {
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_keycolor = 0;
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while (!load(rawframe, _keycolor) && _keycolor < 0xFF) {
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_keycolor++;
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}
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}
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}
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ShapeFrame::~ShapeFrame() {
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_surface.free();
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}
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bool ShapeFrame::load(const RawShapeFrame *rawframe, uint8 keycolor) {
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bool result = true;
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uint8 *pixels = reinterpret_cast<uint8 *>(_surface.getPixels());
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memset(pixels, keycolor, _surface.w * _surface.h);
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for (int y = 0; y < _surface.h; y++) {
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int32 xpos = 0;
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const uint8 *linedata = rawframe->_rle_data + rawframe->_line_offsets[y];
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do {
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xpos += *linedata++;
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if (xpos >= _surface.w)
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break;
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int32 dlen = *linedata++;
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int type = 0;
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if (rawframe->_compressed) {
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type = dlen & 1;
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dlen >>= 1;
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}
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for (int doff = 0; doff < dlen; doff++) {
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if (*linedata == keycolor)
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result = false;
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pixels[y * _surface.w + xpos + doff] = *linedata;
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if (!type) {
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linedata++;
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}
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}
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xpos += dlen;
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if (type) {
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linedata++;
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}
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} while (xpos < _surface.w);
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}
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return result;
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}
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// Checks to see if the frame has a pixel at the point
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bool ShapeFrame::hasPoint(int x, int y) const {
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// Add the offset
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x += _xoff;
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y += _yoff;
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// First gross culling based on dims
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if (x < 0 || y < 0 || x >= _surface.w || y >= _surface.h)
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return false;
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return _surface.getPixel(x, y) != _keycolor;
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}
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// Get the pixel at the point
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uint8 ShapeFrame::getPixel(int x, int y) const {
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// Add the offset
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x += _xoff;
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y += _yoff;
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// First gross culling based on dims
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if (x < 0 || y < 0 || x >= _surface.w || y >= _surface.h)
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return _keycolor;
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return _surface.getPixel(x, y);
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}
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} // End of namespace Ultima8
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} // End of namespace Ultima
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