使用QT实现地弹球游戏最终版

#include "downwidget.h" downWidget::downWidget(QWidget *parent) : QWidget(parent) { x = 50, y = 50; n = m = 1; this->setStyleSheet("background: #ada"); setFocusPolicy(Qt::StrongFocus ); //使得键盘控制此窗口 ball = new QLabel(this); //球 ball->resize(50, 50); ball->move(100, 100); ball->setStyleSheet("background-color: red; border-radius: 25px;"); // bat = new QPushButton(this); //底板 换成Qlabel可以?????? bat = new QLabel(this); //底板 bat->resize(70, 40); bat->move(200, 300); bat->setStyleSheet("background-color: green; border-radius: 5px;"); timer = new QTimer(this); timer->start(10); connect(timer, SIGNAL(timeout()), this, SLOT(mymove())); } void downWidget::mymove(){ //球移动 slottime(); bat->setGeometry(this->bat->x(), this->height() - 40, 100, 40); //动态获取设置bat：位置， 大小 if(x < 0 || x > this->width() - 50) //左右相撞 n = -n; if(y < 0) // 与上面相撞 m = -m; if(this->ball->y() + this->ball->height() >= this->bat->y() && this->ball->x() + 25 > this->bat->x() && this->ball->x() + 25 < this->bat->x() + this->bat->width()){ //与底板相撞 m = -m; slotClick(); } if(this->ball->y() > this->height()){ //没接住，则关闭窗口，结束游戏 this->close(); this->slotgameover(); this->timer->stop(); } x += n; y += m; this->ball->move(x, y); } void downWidget::slotClick(){ //转化信号 emit signalScore(); //发出信号 } void downWidget::slottime(){ emit signaltime(); } void downWidget::slotgameover(){ emit signalgameover(); } void downWidget::paintEvent(QPaintEvent *e){ //使子窗口可以调色 QStyleOption opt; opt.init(this); QPainter p(this); style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this); } void downWidget::keyPressEvent(QKeyEvent *event){ qDebug() << event->key(); //输出所按键 if(event->key() == Qt::Key_A && this->bat->x() >= 10) //a = 65, 按下a左移 // 移动的同时保证木块不移出去 this->bat->move(this->bat->x() - 10, this->bat->y()); if(event->key() == Qt::Key_D && this->bat->x() + this->bat->width() + 5 <= this->width()) //d = 68，按d右移 this->bat->move(this->bat->x() + 10, this->bat->y()); if(event->key() == Qt::Key_Left && this->bat->x() > 5) this->bat->move(this->bat->x() - 10, this->bat->y()); if(event->key() == Qt::Key_Right && this->bat->x() + this->bat->width() < this->width() - 5) this->bat->move(this->bat->x() + 10, this->bat->y()); }