doc/html/t14-cannon-h.html


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<pre>/****************************************************************
**
** Definition of CannonField class, Qt tutorial 14
**
****************************************************************/

#ifndef CANNON_H
#define CANNON_H

class QTimer;


#include &lt;<a href="qwidget-h.html">qwidget.h</a>&gt;


class CannonField : public <a href="qwidget.html">QWidget</a>
{
    Q_OBJECT
public:
    CannonField( <a href="qwidget.html">QWidget</a> *parent=0, const char *name=0 );

    int   angle() const { return ang; }
    int   force() const { return f; }
    bool  gameOver() const { return gameEnded; }
    bool  isShooting() const;
    <a href="qsize.html">QSize</a> sizeHint() const;
    <a href="qsizepolicy.html">QSizePolicy</a> sizePolicy() const;

public slots:
    void  setAngle( int degrees );
    void  setForce( int newton );
    void  shoot();
    void  newTarget();
    void  setGameOver();
    void  restartGame();

private slots:
    void  moveShot();

signals:
    void  hit();
    void  missed();
    void  angleChanged( int );
    void  forceChanged( int );
    void  canShoot( bool );

protected:
    void  paintEvent( <a href="qpaintevent.html">QPaintEvent</a> * );
    void  mousePressEvent( <a href="qmouseevent.html">QMouseEvent</a> * );
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    void  mouseReleaseEvent( <a href="qmouseevent.html">QMouseEvent</a> * );

private:
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    void  paintTarget( <a href="qpainter.html">QPainter</a> * );
    void  paintBarrier( <a href="qpainter.html">QPainter</a> * );
    void  paintCannon( <a href="qpainter.html">QPainter</a> * );
    <a href="qrect.html">QRect</a> cannonRect() const;
    <a href="qrect.html">QRect</a> shotRect() const;
    <a href="qrect.html">QRect</a> targetRect() const;
    <a href="qrect.html">QRect</a> barrierRect() const;
    bool  barrelHit( const <a href="qpoint.html">QPoint</a> &amp; ) const;

    int ang;
    int f;

    int timerCount;
    <a href="qtimer.html">QTimer</a> * autoShootTimer;
    float shoot_ang;
    float shoot_f;

    <a href="qpoint.html">QPoint</a> target;

    bool gameEnded;
    bool barrelPressed;
};


#endif // CANNON_H
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