ZVISION: Create class for decoding .zcr cursor files

3 files changed, 167 insertions, 0 deletions

diff --git a/engines/zvision/cursor.cpp b/engines/zvision/cursor.cpp
new file mode 100644
index 0000000000..601c58fa2c
--- /dev/null
+++ b/engines/zvision/cursor.cpp
@@ -0,0 +1,100 @@
+/* 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/scummsys.h"
+
+#include "common/str.h"
+#include "common/file.h"
+
+#include "zvision/cursor.h"
+
+
+namespace ZVision {
+
+ZorkCursor::ZorkCursor() 
+	: _width(0),
+	  _height(0),
+	  _hotspotX(0),
+	  _hotspotY(0),
+	  _surface(0) {
+}
+
+ZorkCursor::ZorkCursor(const Common::String &fileName) 
+		: _width(0),
+		  _height(0),
+		  _hotspotX(0),
+		  _hotspotY(0),
+		  _surface(0) {
+	Common::File file;
+	if (!file.open(fileName))
+		return;
+
+	uint32 magic = file.readUint32BE();
+	if (magic != MKTAG('Z', 'C', 'R', '1')) {
+		warning("%s is not a Zork Cursor file", fileName.c_str());
+		return;
+	}
+
+	_hotspotX = file.readUint16LE();
+	_hotspotY = file.readUint16LE();
+	_width = file.readUint16LE();
+	_height = file.readUint16LE();
+
+	uint dataSize = _width * _height * 2;
+	_surface = new byte[dataSize];
+	uint32 bytesRead = file.read(_surface, dataSize);
+	assert(bytesRead == dataSize);
+}
+
+ZorkCursor::ZorkCursor(const ZorkCursor &other) {
+	_width = other._width;
+	_height = other._height;
+	_hotspotX = other._hotspotX;
+	_hotspotY = other._hotspotY;
+
+	uint dataSize = _width * _height * 2;
+	_surface = new byte[dataSize];
+
+	memcpy(_surface, other._surface, dataSize);
+}
+
+ZorkCursor &ZorkCursor::operator=(const ZorkCursor &other) {
+	_width = other._width;
+	_height = other._height;
+	_hotspotX = other._hotspotX;
+	_hotspotY = other._hotspotY;
+
+	uint dataSize = _width * _height * 2;
+	_surface = new byte[dataSize];
+
+	memcpy(_surface, other._surface, dataSize);
+
+	return *this;
+}
+
+ZorkCursor::~ZorkCursor() {
+	if (_surface != 0) {
+		delete[] _surface;
+	}
+}
+
+} // End of namespace ZVision
diff --git a/engines/zvision/cursor.h b/engines/zvision/cursor.h
new file mode 100644
index 0000000000..0d91a48f0f
--- /dev/null
+++ b/engines/zvision/cursor.h
@@ -0,0 +1,66 @@
+/* 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.
+ *
+ */
+
+#ifndef ZVISION_CURSOR_H
+#define ZVISION_CURSOR_H
+
+#include "common/types.h"
+
+#include "graphics/cursor.h"
+
+namespace Common {
+class String;
+}
+
+namespace ZVision {
+
+class ZorkCursor : public Graphics::Cursor {
+public:
+	ZorkCursor();
+	ZorkCursor(const Common::String &fileName);
+	ZorkCursor(const ZorkCursor &other);
+	~ZorkCursor();
+
+private:
+	uint16 _width;
+	uint16 _height;
+	uint16 _hotspotX;
+	uint16 _hotspotY;
+	byte *_surface;
+
+public:
+	ZorkCursor &operator=(const ZorkCursor &other);
+
+	uint16 getWidth() const { return _width; }
+	uint16 getHeight() const { return _height; }
+	uint16 getHotspotX() const { return _hotspotX; }
+	uint16 getHotspotY() const { return _hotspotY; }
+	byte getKeyColor() const { return 0; }
+	const byte *getSurface() const { return _surface; }
+	const byte *getPalette() const { return 0; }
+	byte getPaletteStartIndex() const { return 0; }
+	uint16 getPaletteCount() const { return 0; }
+};
+
+} // End of namespace ZVision
+
+#endif
diff --git a/engines/zvision/module.mk b/engines/zvision/module.mk
index 14fc035aa1..feafad5e16 100644
--- a/engines/zvision/module.mk
+++ b/engines/zvision/module.mk
@@ -6,6 +6,7 @@ MODULE_OBJS := \
 	clock.o \
 	console.o \
 	control.o \
+	cursor.o \
 	detection.o \
 	events.o \
 	lzss_read_stream.o \