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#ifndef CANNONFIELD_H
#define CANNONFIELD_H

#include <QWidget>

QT_BEGIN_NAMESPACE
class QTimer;
QT_END_NAMESPACE

class CannonField : public QWidget
{
    Q_OBJECT

public:
    CannonField(QWidget *parent = 0);

    int angle() const { return currentAngle; }
    int force() const { return currentForce; }

public slots:
    void setAngle(int angle);
    void setForce(int force);
//! [0]
    void shoot();
//! [0]

//! [1]
private slots:
    void moveShot();
//! [1]

signals:
    void angleChanged(int newAngle);
    void forceChanged(int newForce);

protected:
    void paintEvent(QPaintEvent *event);

//! [2]
private:
//! [2] //! [3]
    void paintShot(QPainter &painter);
//! [3]
    void paintCannon(QPainter &painter);
    QRect cannonRect() const;
//! [4]
    QRect shotRect() const;
//! [4]

    int currentAngle;
    int currentForce;

//! [5]
    int timerCount;
    QTimer *autoShootTimer;
    float shootAngle;
    float shootForce;
//! [5] //! [6]
};
//! [6]

#endif
