GraphicsButtonItem::GraphicsButtonItem(const QPixmap &pixmap, QGraphicsScene *scene) : pix(pixmap)
{
scene->addItem(this);
setCursor(QCursor(Qt::PointingHandCursor));
}
void GraphicsButtonItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
if (event->button() == Qt::LeftButton)
{
emit clicked();
}
__super::mousePressEvent(event);
}
QSizeF GraphicsButtonItem::size() const
{
return pix.size();
}
QRectF GraphicsButtonItem::boundingRect() const
{
return QRectF(QPointF(0, 0), pix.size());
}
void GraphicsButtonItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
painter->drawPixmap(0, 0, pix);
}
管道组件绘制
#define PIPE_WIDTH 60
GraphicsPipeitem::GraphicsPipeitem(QGraphicsScene *scene)
{
m_scene = scene;
m_scene->addItem(this);
createPipeHeight();
startMove();
}
void GraphicsPipeitem::createPipeHeight()
{
m_upPipeHeight = qrand() % 100 + 80;
m_downPipeHeight = m_scene->height() - m_upPipeHeight - 178;
}
QRectF GraphicsPipeitem::boundingRect() const
{
return QRectF(m_scene->width(), 0, PIPE_WIDTH, m_scene->height());
}
QPainterPath GraphicsPipeitem::shape() const
{
QPainterPath path;
path.addRect(QRectF(m_scene->width(), 0, PIPE_WIDTH, m_upPipeHeight));
path.addRect(QRectF(m_scene->width(), m_upPipeHeight + 140, PIPE_WIDTH, m_downPipeHeight));
return path;
}
void GraphicsPipeitem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
painter->save();
painter->drawImage(QRectF(m_scene->width(), 0, PIPE_WIDTH, m_upPipeHeight), QImage(":/FlappyBird/Resources/texture/tubeup.png").scaled(PIPE_WIDTH, m_upPipeHeight));
painter->drawImage(QRectF(m_scene->width(), m_upPipeHeight + 140, PIPE_WIDTH, m_downPipeHeight), QImage(":/FlappyBird/Resources/texture/tubedown.png").scaled(PIPE_WIDTH, m_downPipeHeight));
painter->restore();
}
void GraphicsPipeitem::startMove()
{
QPropertyAnimation* moveAnimation = new QPropertyAnimation(this, "pos");
moveAnimation->setLoopCount(-1);
moveAnimation->setDuration(3000);
moveAnimation->setStartValue(QPoint(0, pos().y()));
moveAnimation->setEndValue(QPoint(-1 * m_scene->width() - PIPE_WIDTH, pos().y()));
moveAnimation->start();
connect(moveAnimation, &QPropertyAnimation::currentLoopChanged, [this](int loopCount){
createPipeHeight();
});
}
地面绘制
#define ROAD_ITEM_HEIGHT 38
GraphicsRoadItem::GraphicsRoadItem(QGraphicsScene *scene) :m_scene(scene)
{
scene->addItem(this);
startMove();
}
QRectF GraphicsRoadItem::boundingRect() const
{
return QRectF(0, m_scene->height() - ROAD_ITEM_HEIGHT, m_scene->width() * 2, ROAD_ITEM_HEIGHT);
}
void GraphicsRoadItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
painter->drawImage(QRectF(0, m_scene->height() - ROAD_ITEM_HEIGHT, m_scene->width(), ROAD_ITEM_HEIGHT), QImage(":/FlappyBird/Resources/texture/road.png"));
painter->drawImage(QRectF(m_scene->width(), m_scene->height() - ROAD_ITEM_HEIGHT, m_scene->width(), ROAD_ITEM_HEIGHT), QImage(":/FlappyBird/Resources/texture/road.png"));
}
void GraphicsRoadItem::startMove()
{
QPropertyAnimation* moveAnimation = new QPropertyAnimation(this, "pos");
moveAnimation->setLoopCount(-1);
moveAnimation->setDuration(6000);
moveAnimation->setStartValue(QPoint(0, pos().y()));
moveAnimation->setEndValue(QPoint(0 - m_scene->width(), pos().y()));
moveAnimation->setEasingCurve(QEasingCurve::Linear);
moveAnimation->start();
}
