submarine.h Example File

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 #ifndef __SUBMARINE__H__
 #define __SUBMARINE__H__

 //Qt
 #include <QtGui/QGraphicsTransform>

 #include "pixmapitem.h"

 class Torpedo;

 class SubMarine : public PixmapItem
 {
 Q_OBJECT
 public:
     enum Movement {
        None = 0,
        Left,
        Right
     };
     enum { Type = UserType + 1 };
     SubMarine(int type, const QString &name, int points);

     int points() const;

     void setCurrentDirection(Movement direction);
     enum Movement currentDirection() const;

     void setCurrentSpeed(int speed);
     int currentSpeed() const;

     void launchTorpedo(int speed);
     void destroy();

     virtual int type() const;

     QGraphicsRotation *rotation() const { return graphicsRotation; }

 signals:
     void subMarineDestroyed();
     void subMarineExecutionFinished();
     void subMarineStateChanged();

 private:
     int subType;
     QString subName;
     int subPoints;
     int speed;
     Movement direction;
     QGraphicsRotation *graphicsRotation;
 };

 #endif //__SUBMARINE__H__