Qt简单版贪吃?游戏

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    resize(480,500);
    //设置窗体背景色为黑色
    setStyleSheet("QWidget{background:black}");
    setWindowOpacity(0.8);//设置窗口的透明度
 
    snake.append(QRectF(200,500,snakeNodeWidth,snakeNodeHeight));
    addTopRectF();
    addTopRectF();
    //首先生成一个奖励节点
    rewardNode.append(QRectF(100,100,snakeNodeWidth,snakeNodeWidth));
 
    timer = new QTimer;
    connect(timer, SIGNAL(timeout()),this,SLOT(timeOut()));
    //timer->start(time);
 
    rewardTimer = new QTimer;
    connect(rewardTimer,SIGNAL(timeout()),this,SLOT(rewardTimeOut()));

    }

//向上移动
void Widget::addTopRectF()
{
    if(snake.at(0).y()-snakeNodeHeight < 0){
        snake.insert(0,QRectF(QPointF(snake.at(0).x(),this->height()-snakeNodeHeight),
                              QPointF(snake.at(0).x()+snakeNodeWidth,this->height())));
    }else{
        snake.insert(0,QRectF(snake.at(0).topLeft()+QPointF(0,-snakeNodeHeight),snake.at(0).topRight()));
    }
}
//向下移动
void Widget::addDownRectF()
{
    if(snake.at(0).y()+snakeNodeHeight*2 > this->height()){
        snake.insert(0,QRectF(QPointF(snake.at(0).x(),snakeNodeHeight),
                              QPointF(snake.at(0).x()+snakeNodeWidth,0)));
    }else{
        snake.insert(0,QRectF(snake.at(0).bottomLeft(),snake.at(0).bottomRight()+QPointF(0,snakeNodeHeight)));
    }
}
//向左移动
void Widget::addLeftRectF()
{
    if(snake.at(0).x()-snakeNodeWidth < 0){
        snake.insert(0,QRectF(QPointF(this->width()-snakeNodeWidth,snake.at(0).y()),
                              QPointF(this->width(),snake.at(0).y()+snakeNodeHeight)));
    }else{
        snake.insert(0,QRectF(snake.at(0).topLeft()+QPointF(-snakeNodeWidth,0),snake.at(0).bottomLeft()));
    }
}
//向右移动
void Widget::addRightRectF()
{
    if(snake.at(0).x()+snakeNodeWidth*2 > this->width()){
        snake.insert(0,QRectF(QPointF(0,snake.at(0).y()),
                              QPointF(snakeNodeWidth,snake.at(0).y()+snakeNodeHeight)));
    }else{
        snake.insert(0,QRectF(snake.at(0).topRight(),snake.at(0).bottomRight()+QPointF(snakeNodeWidth,0)));
    }
}
//删除结尾数据
void Widget::deleteLastRectF()
{
    snake.removeLast();

}