Qt 4.6: submarine.h Example File (demos/sub-attaq/submarine.h)

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# submarine.h Example File
demos/sub-attaq/submarine.h

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     #ifndef __SUBMARINE__H__
     #define __SUBMARINE__H__

     //Qt
     #include <QtCore/QVariantAnimation>
     #include <QtGui/QGraphicsWidget>
     #include <QtGui/QGraphicsTransform>

     class PixmapItem;

     class Torpedo;

     class SubMarine : public QGraphicsWidget
     {
     Q_OBJECT
     public:
         enum Movement {
            None = 0,
            Left,
            Right
         };
         enum { Type = UserType + 1 };
         SubMarine(int type, const QString &name, int points, QGraphicsItem * parent = 0, Qt::WindowFlags wFlags = 0);

         int points();

         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;
         PixmapItem *pixmapItem;
         QGraphicsRotation *graphicsRotation;
     };

     #endif //__SUBMARINE__H__