PRINCE: Parallax bitmaps loading, showParallax() implementation

1 files changed, 90 insertions, 0 deletions

diff --git a/engines/prince/pscr.cpp b/engines/prince/pscr.cpp
new file mode 100644
index 0000000000..7402e46e43
--- /dev/null
+++ b/engines/prince/pscr.cpp
@@ -0,0 +1,90 @@
+/* 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 "common/archive.h"
+#include "common/debug-channels.h"
+#include "common/debug.h"
+#include "common/stream.h"
+
+#include "graphics/surface.h"
+
+#include "prince/pscr.h"
+
+namespace Prince {
+
+PScr::PScr() :_file(0), _x(0), _y(0), _step(0), _addr(0), _len(0), _surface(NULL)
+{
+}
+
+PScr::~PScr() {
+	if (_surface) {
+		_surface->free();
+		delete _surface;
+		_surface = NULL;
+	}
+}
+
+void PScr::loadSurface(Common::SeekableReadStream &stream) {
+	//stream.skip(4);
+	int x = stream.readUint16LE();
+	int y = stream.readUint16LE();
+	int width = stream.readUint16LE();
+	int height = stream.readUint16LE();
+	debug("x: %d, y: %d", x, y);
+	debug("w: %d, h: %d", width, height);
+	_surface = new Graphics::Surface();
+	_surface->create(width, height, Graphics::PixelFormat::createFormatCLUT8());
+
+	for (int h = 0; h < _surface->h; h++) {
+		stream.read(_surface->getBasePtr(0, h), _surface->w);
+	}
+}
+
+bool PScr::loadFromStream(Common::SeekableReadStream &stream) {
+	int32 pos = stream.pos();
+	uint16 file = stream.readUint16LE();
+	if (file == 0xFFFF)
+		return false;
+	_file = file;
+	_x = stream.readUint16LE();
+	_y = stream.readUint16LE();
+	_step = stream.readUint16LE();
+	_addr = stream.readUint32LE();
+
+	const Common::String pscrStreamName = Common::String::format("PS%02d", _file);
+	Common::SeekableReadStream *pscrStream = SearchMan.createReadStreamForMember(pscrStreamName);
+	if (!pscrStream) {
+		error("Can't load %s", pscrStreamName.c_str());
+		return false;
+	}
+
+	loadSurface(*pscrStream);
+	delete pscrStream;
+	
+	stream.seek(pos + 12); // size of PScrList struct
+
+	debug("Parallex nr %d, x %d, y %d, step %d", _file, _x, _y, _step);
+
+	return true;
+}
+
+}
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