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https://github.com/scummvm/scummvm.git
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108 lines
2.9 KiB
C++
108 lines
2.9 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 "darkseed/pic.h"
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#include "darkseed/darkseed.h"
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#include "common/debug.h"
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namespace Darkseed {
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bool Pic::load(const Common::Path &filename) {
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g_engine->waitForSpeech();
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Common::File file;
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Common::Path fullPath = g_engine->getPictureFilePath(filename);
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if (!file.open(fullPath)) {
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debug("Failed to load %s", fullPath.toString().c_str());
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return false;
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}
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bool ret = load(file);
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file.close();
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if (ret) {
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debug("Loaded %s (%d,%d)", fullPath.toString().c_str(), _width, _height);
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}
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return ret;
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}
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bool Pic::load(Common::SeekableReadStream &readStream) {
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_width = readStream.readUint16BE();
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_height = readStream.readUint16BE();
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_pixels.resize(_width * (_height + 1), 0);
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int curX = 0;
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int curY = 0;
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while (curY < _height) {
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int rleCommand = readNextNibble(readStream);
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if (rleCommand < 8) {
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// read nibble count of nibbles pixels
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for (int i = 0; i < rleCommand + 1; i++) {
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byte pixel = readNextNibble(readStream);
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_pixels[curX + curY * _width] = pixel;
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curX++;
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if (curX == _width) {
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curX = 0;
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curY++;
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}
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}
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} else {
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// fetch next nibble and repeat if n times.
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byte pixel = readNextNibble(readStream);
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for (int i = 16; i >= rleCommand; i--) {
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_pixels[curX + curY * _width] = pixel;
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curX++;
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if (curX == _width) {
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curX = 0;
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curY++;
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}
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}
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}
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}
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return true;
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}
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byte Pic::readNextNibble(Common::SeekableReadStream &readStream) {
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if (!_hasReadByte) {
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_currentDataByte = readStream.readByte();
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if (readStream.eos()) {
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debug("Argh!");
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}
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_hasReadByte = true;
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return _currentDataByte >> 4;
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} else {
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_hasReadByte = false;
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return _currentDataByte & 0xf;
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}
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}
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void Pic::draw() {
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draw(0, 0);
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}
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void Pic::draw(int xOffset, int yOffset) {
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g_engine->_screen->copyRectToSurface(getPixels().data(), getWidth(), xOffset, yOffset, getWidth(), getHeight());
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}
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void Pic::drawRect(const Common::Rect &rect) {
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void *ptr = getPixels().data() + rect.left + (rect.top * getWidth());
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g_engine->_screen->copyRectToSurface(ptr, getWidth(), rect.left, rect.top, rect.width(), rect.height());
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}
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} // End of namespace Darkseed
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