PEGASUS: Add the compass class

engines/pegasus/compass.cpp

@@ -0,0 +1,82 @@
+/* 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.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995-1997 Presto Studios, Inc.
+ *
+ * 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 "pegasus/compass.h"
+
+namespace Pegasus {
+
+Compass *g_compass = 0;
+
+Compass::Compass() : FaderAnimation(kCompassID) {
+	// Initialize it to east...
+	setFaderValue(90);
+	g_compass = this;
+}
+
+Compass::~Compass() {
+	g_compass = 0;
+}
+
+void Compass::initCompass() {
+	if (!isCompassValid()) {
+		Common::Rect r;
+		_compassImage.initFromPICTFile("Images/Compass/Compass");
+		_compassImage.getSurfaceBounds(r);
+		r.right = kCompassWidth;
+		setBounds(r);
+	}
+}
+
+void Compass::deallocateCompass() {
+	_compassImage.deallocateSurface();
+}
+
+void Compass::setFaderValue(const uint32 angle) {
+	int16 a = (int32)angle % 360;
+
+	if (a < 0)
+		a += 360;
+
+	FaderAnimation::setFaderValue(a);
+}
+
+void Compass::draw(const Common::Rect &r1) {	
+	if (_compassImage.isSurfaceValid()) {
+		Common::Rect bounds;
+		getBounds(bounds);
+
+		Common::Rect r2;
+		_compassImage.getSurfaceBounds(r2);
+
+		tCoordType width = r2.width();
+		tCoordType offsetH = width / 10 - bounds.width() / 2 + (getFaderValue() * width) / 450 - bounds.left;
+		tCoordType offsetV = -bounds.top;
+		r2 = r1;
+		r2.translate(offsetH, offsetV);
+		_compassImage.drawImage(r2, r1);
+	}
+}
+
+} // End of namespace Pegasus

engines/pegasus/compass.h

@@ -0,0 +1,58 @@
+/* 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.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995-1997 Presto Studios, Inc.
+ *
+ * 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 PEGASUS_COMPASS_H
+#define PEGASUS_COMPASS_H
+
+#include "pegasus/fader.h"
+#include "pegasus/surface.h"
+
+namespace Pegasus {
+
+// Compass is defined with 0 as north, 90 east, 180 south, 270 west.
+// Clockwise rotation increases the angle, counterclockwise rotation decreases the angle.
+
+class Compass : public FaderAnimation {
+public:
+	Compass();
+	virtual ~Compass();
+
+	void initCompass();
+	void deallocateCompass();
+	bool isCompassValid() const { return _compassImage.isSurfaceValid(); }
+
+	void setFaderValue(const uint32);
+
+protected:
+	void draw(const Common::Rect &);
+
+	Frame _compassImage;
+};
+
+extern Compass *g_compass;
+
+} // End of namespace Pegasus
+
+#endif

engines/pegasus/module.mk

@@ -1,6 +1,7 @@
 MODULE := engines/pegasus
 
 MODULE_OBJS = \
+	compass.o \
 	console.o \
 	cursor.o \
 	detection.o \