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diff --git a/engines/titanic/star_control/viewport.h b/engines/titanic/star_control/viewport.h
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+++ b/engines/titanic/star_control/viewport.h
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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 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 TITANIC_VIEWPORT_H
+#define TITANIC_VIEWPORT_H
+
+#include "titanic/support/simple_file.h"
+#include "titanic/star_control/base_stars.h"
+#include "titanic/star_control/fpose.h"
+#include "titanic/star_control/fmatrix.h"
+
+namespace Titanic {
+
+/**
+ * Implements the viewport functionality for viewing the star field in
+ * a given position and orientation
+ */
+class CViewport {
+private:
+	double _fieldC;
+	double _field18;
+	double _field1C;
+	int _width;
+	int _height;
+	FMatrix _matrix;
+	FPose _sub1;
+	FPose _sub2;
+	FPoint _center;
+	bool _flag;
+private:
+	void reset();
+public:
+	FVector _position;
+	double _field10;
+	double _field14;
+	int _field24;
+	double _valArray[5];
+	FVector _centerVector;
+public:
+	CViewport();
+	CViewport(CViewport *src);
+
+	/**
+	 * Copys the data from another instance
+	 */
+	void copyFrom(const CViewport *src);
+
+	/**
+	 * Load the data for the class from file
+	 */
+	void load(SimpleFile *file, int param);
+
+	/**
+	 * Save the data for the class to file
+	 */
+	void save(SimpleFile *file, int indent);
+
+	/**
+	 * Sets the position
+	 */
+	void setPosition(const FVector &v);
+
+	/**
+	 * Sets the position
+	 */
+	void setPosition(const FPose &pose);
+
+	/**
+	 * Sets the matrix
+	 */
+	void setMatrix(const FMatrix &m);
+
+	void fn11(const FVector &v);
+	void fn12();
+	void fn13(StarMode mode, double val);
+	void reposition(double factor);
+	void fn15(const FMatrix &matrix);
+	FPose getSub1();
+	FPose getSub2();
+	FVector fn16(int index, const FVector &src);
+	FVector fn17(int index, const FVector &src);
+	FVector fn18(int index, const FVector &src);
+	void fn19(double *v1, double *v2, double *v3, double *v4);
+
+	/**
+	 * Returns the instance's matrix
+	 */
+	const FMatrix &getMatrix() const;
+
+	void setC(double v);
+	void set10(double v);
+	void set14(double v);
+	void set18(double v);
+	void set1C(double v);
+};
+
+} // End of namespace Titanic
+
+#endif /* TITANIC_VIEWPORT_H */