qt图形视图、动画框架游戏demo

#include "gamewindow.h" #include "ui_gamewindow.h" #include <QFile> #include <QGraphicsView> #include <QSequentialAnimationGroup> #include <QPropertyAnimation> #include <QStyleOption> #include <buttonitem.h> #include <QTimer> #include <QKeyEvent> #include "roaditem.h" #include "pipeitem.h" GameWindow::GameWindow(QWidget *parent) : QWidget(parent), m_startGame(false), ui(new Ui::GameWindow) { ui->setupUi(this); initControl(); initBackgroundMusic(); this->setWindowTitle("飞翔的小鸟"); } GameWindow::~GameWindow() { delete ui; } void GameWindow::GameOver() { //“墙都不扶，就服你！” const int nLetters = 9; struct{ char const *pix; qreal initX, initY; qreal destX, destY; }letterData[nLetters] = { {"墙", -1000, -1000, 200, 160 },//第一行 {"都", -800, -1000, 250, 160 }, {"不", -600, -1000, 300, 160 }, {"扶", -400, -1000, 350, 160 },//第二行 {"，", 1000, 2000, 400, 160 }, {"就", 800, 2000, 225, 220 }, {"服", 600, 2000, 275, 220 }, {"你", 400, 2000, 325, 220 }, {"！", 200, 2000, 375, 220 } }; //game over 文字动画组 QParallelAnimationGroup* lettersGroupMoving = new QParallelAnimationGroup(this); for(int i = 0; i < nLetters; ++i) { //文本图形项 QString htmlText = QString("<span style=\"font-family:'Berlin Sans FB';font-size:38px;font-weight:600;color:#194819;\">%1</span>").arg(letterData[i].pix); QGraphicsTextItem *letter = new QGraphicsTextItem(); letter->setHtml(htmlText); letter->setPos(letterData[i].initX,letterData[i].initY); //文本项属性动画 QPropertyAnimation *moveAnimation = new QPropertyAnimation(letter,"pos",lettersGroupMoving); moveAnimation->setEndValue(QPointF(letterData[i].destX,letterData[i].destY));//设置字符动画结束的位置 moveAnimation->setDuration(200);//动画时长200ms moveAnimation->setEasingCurve(QEasingCurve::OutElastic);//动画曲线效果 //文本图形项添加到游戏场景中去 m_scene->addItem(letter); } lettersGroupMoving->start(QAbstractAnimation::DeleteWhenStopped); //将小鸟图形项移除 m_scene->removeItem(m_birdItem); //游戏结束的音效 m_welcomePlayer->stop(); m_welcomePlayerList->clear(); m_welcomePlayer->setMedia(QUrl("qrc:/BirdGame/Resources/sound/gameover.wav")); m_welcomePlayer->setVolume(100); m_welcomePlayer->play(); } void GameWindow::initControl() { loadStyleSheet("GameWindow"); m_scene = new GameScene(this,rect()); //初始化游戏视图，将场景添加到视图中 QGraphicsView* view = new QGraphicsView(m_scene,this); view->setScene(m_scene);//设置游戏场景 view->setStyleSheet("border:none;background:transparent;");//视图边框透明 view->setCacheMode(QGraphicsView::CacheBackground);//设置缓存为背景模式，无改变不刷新 startWelcome();//启动欢迎界面 } void GameWindow::initBackgroundMusic() { m_welcomePlayer = new QMediaPlayer(this); //播放一次 // { // m_welcomePlayer->setMedia(QUrl("qrc:/BirdGame/Resources/sound/welcome.mp3")); // m_welcomePlayer->setVolume(88); // m_welcomePlayer->play(); // } m_welcomePlayerList = new QMediaPlaylist(this); m_welcomePlayerList->addMedia(QUrl("qrc:/BirdGame/Resources/sound/welcome.mp3")); m_welcomePlayerList->setPlaybackMode(QMediaPlaylist::CurrentItemInLoop);//循环播放 m_welcomePlayer->setPlaylist(m_welcomePlayerList);//将播放列表放置到播放器 m_welcomePlayer->play(); } //加载样式 void GameWindow::loadStyleSheet(const QString &sheetName) { QFile file(":/BirdGame/Resources/qss/"+sheetName+".css"); if(file.open(QFile::ReadOnly)) { QString strStyleSheet = this->styleSheet();//读取当前样式 strStyleSheet+=file.readAll(); this->setStyleSheet(strStyleSheet); file.close(); } } void GameWindow::startWelcome() { m_birdItem = new BirdItem(m_scene);//小鸟对象 //游戏状态检测 m_checkGameStatusTimer = new QTimer(this); //定时检测游戏状态 connect(m_checkGameStatusTimer,SIGNAL(timeout()),this,SLOT(onCheckGameStatus())); //管道 PipeItem* pipe = new PipeItem(m_scene); //道路 RoadItem* road = new RoadItem(m_scene); //文字 const int nLetters = 15; struct{ char const* pix; qreal initx,inity; qreal destx,desty; } letterData[nLetters]= { {"飞",-1000,-1000,250,100}, {"吧",-800,-1000,300,100}, {"，",-6000,-1000,350,100}, {"像",-400,-1000,150,160}, {"风",1000,2000,200,160}, {"一",800,2000,250,160}, {"样",600,2000,300,160}, {"自",400,2000,350,160}, {"由",200,2000,400,160}, {"，",0,2000,450,160}, {"无",0,2000,175,220}, {"法",0,2000,225,220}, {"挽",0,2000,275,220}, {"留",0,2000,325,220}, {"...",0,2000,375,220}, }; //连续动画组 QSequentialAnimationGroup* letterGroupMoving = new QSequentialAnimationGroup(this); //并行动画组 m_letterGroupFading = new QParallelAnimationGroup(this); for(int i=0;i<nLetters;i++) { //文本图形项 QString htmlText = QString("<span style=\"font-family:'Berlin Sans FB';font-size:38px;font-weight:600;color:#194819\">%1</span>").arg(letterData[i].pix); QGraphicsTextItem* letter = new QGraphicsTextItem(); letter->setHtml(htmlText); letter->setPos(letterData[i].initx,letterData[i].inity);//位置初始值 QPropertyAnimation* moveAnimation = new QPropertyAnimation(letter,"pos",letterGroupMoving); moveAnimation->setEndValue(QPoint(letterData[i].destx,letterData[i].desty));//位置结束值 moveAnimation->setDuration(200);//动画时长 moveAnimation->setEasingCurve(QEasingCurve::OutElastic);//动画曲线效果 letterGroupMoving->addPause(50); //渐渐消失动画 QPropertyAnimation* fadeAnimation = new QPropertyAnimation(letter,"opacity",m_letterGroupFading); fadeAnimation->setDuration(1000); fadeAnimation->setEndValue(0); fadeAnimation->setEasingCurve(QEasingCurve::OutQuad); m_scene->addItem(letter);//往游戏场景中添加字符项 } //启动字符动画 letterGroupMoving->start(QAbstractAnimation::DeleteWhenStopped); //按钮图形项目 QPixmap pix(":/BirdGame/Resources/image/startButton.png"); ButtonItem* btnItem = new ButtonItem(pix,m_scene); btnItem->setPos(QPointF(220,340)); //按钮渐渐消失动画 QPropertyAnimation* fadeAnimation = new QPropertyAnimation(btnItem,"opacity",m_letterGroupFading); fadeAnimation->setDuration(600); fadeAnimation->setEndValue(0);//透明度为0，1为完全不透明 fadeAnimation->setEasingCurve(QEasingCurve::OutQuad); connect(btnItem,SIGNAL(clicked()),this,SLOT(onStartBtnClicked()));//开始游戏 connect(fadeAnimation,&QPropertyAnimation::finished,[this](){ m_startGame = true; m_checkGameStatusTimer->start(50); m_birdItem->flyLandfallAnimation(); m_welcomePlayerList->clear(); m_welcomePlayerList->addMedia(QUrl("qrc:/BirdGame/Resources/sound/background.mp3")); m_welcomePlayer->play(); }); } void GameWindow::paintEvent(QPaintEvent *event) { //自定义paint事件 QStyleOption opt; opt.init(this); QPainter p(this); style()->drawPrimitive(QStyle::PE_Widget,&opt,&p,this); } void GameWindow::keyPressEvent(QKeyEvent *event) { if(m_startGame) { m_birdItem-