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 #ifndef CANNONFIELD_H
 #define CANNONFIELD_H
 
 #include <QWidget>
 
 class QTimer;
 
 class CannonField : public QWidget
 {
     Q_OBJECT
 
 public:
     CannonField(QWidget *parent = 0);
 
     int angle() const { return currentAngle; }
     int force() const { return currentForce; }
     bool gameOver() const { return gameEnded; }
     bool isShooting() const;
     QSize sizeHint() const;
 
 public slots:
     void setAngle(int angle);
     void setForce(int force);
     void shoot();
     void newTarget();
     void setGameOver();
     void restartGame();
 
 private slots:
     void moveShot();
 
 signals:
     void hit();
     void missed();
     void angleChanged(int newAngle);
     void forceChanged(int newForce);
     void canShoot(bool can);
 
 protected:
     void paintEvent(QPaintEvent *event);
     void mousePressEvent(QMouseEvent *event);
     void mouseMoveEvent(QMouseEvent *event);
     void mouseReleaseEvent(QMouseEvent *event);
 
 private:
     void paintShot(QPainter &amp;painter);
     void paintTarget(QPainter &amp;painter);
     void paintBarrier(QPainter &amp;painter);
     void paintCannon(QPainter &amp;painter);
     QRect cannonRect() const;
     QRect shotRect() const;
     QRect targetRect() const;
     QRect barrierRect() const;
     bool barrelHit(const QPoint &amp;pos) const;
 
     int currentAngle;
     int currentForce;
 
     int timerCount;
     QTimer *autoShootTimer;
     float shootAngle;
     float shootForce;
 
     QPoint target;
 
     bool gameEnded;
     bool barrelPressed;
 };
 
 #endif