Initial commit

engines/darkseed/pic.cpp

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