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   源码介绍

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因为开始设计师数据类型没精确，所以吃的时候有点偏差

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QMetaType>
#include <QMessageBox>
MainWindow::MainWindow(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    qRegisterMetaType<QList<QPoint*>>("QList<QPoint*>");
    InfoInit();
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::InfoInit()
{
    int startX=this->width()/2;
    int startY=this->height()/2;
    QPoint *p1=new QPoint();
    p1->setX(startX);
    p1->setY(startY);

    QPoint *p2=new QPoint();
    p2->setX(startX-rectW);
    p2->setY(startY);

    QPoint *p3=new QPoint();
    p3->setX(startX rectW);
    p3->setY(startY);
    lengList.append(p3);
    lengList.append(p1);
    lengList.append(p2);
    GetCurrentSize();
    Direction=="Right";
    operation=new OperationClass();
    CreatT=new CreatTargetPoint();
    OperationThread=new QThread();
    thread=new QThread();
    connect(this,SIGNAL(SendMsg(QString,QList<QPoint*>)),operation,SLOT(GetListPoint(QString,QList<QPoint*>)));
    connect(operation,SIGNAL(SenReturnMsg(QList<QRect>)),this,SLOT(GetReturnMsg(QList<QRect>)));
    connect(this,SIGNAL(sendIsStart(bool)),operation,SLOT(GetIsStart(bool)));
    connect(this,SIGNAL(sendToCreatT(int,int)),CreatT,SLOT(CreatRandomSlot(int,int)));
    connect(this,SIGNAL(clearSignal()),CreatT,SLOT(ClearList()));
    connect(CreatT,SIGNAL(sendTargetRect(QList<QRect>)),this,SLOT(GetTargetRect(QList<QRect>)));
    operation->moveToThread(OperationThread);
    OperationThread->start();
    CreatT->moveToThread(thread);
    thread->start();
    emit SendMsg("",lengList);
    emit sendToCreatT(currentW,currentH);
}

void MainWindow::GetCurrentSize()
{
    currentW=this->width();
    currentH=this->height();
}

void MainWindow::PaintSnaker()
{
    CreatRandom();
    QPainter p;
    p.begin(this);
    p.setPen(QPen(Qt::red,1,Qt::SolidLine));
    p.setBrush(Qt::red);

    for(int j=0;j<targetRectTest.count();j  )
    {
        p.drawRect(targetRectTest[j]);
    }

    for(int i=0;i<DrawRectList.count();i  )
    {
        p.drawRect(DrawRectList[i]);
    }
    int x=targetRectTest[0].x() (targetRectTest[0].width()/2);
    int y=targetRectTest[0].y() (targetRectTest[0].height()/2);

    qDebug()<<"KKLLLLJJJJ::"<<DrawRectList[0].x()<<"||"<<DrawRectList[0].y()<<"||"<<targetRectTest[0].x()<<targetRectTest[0].y()<<targetRectTest[0].width()<<targetRectTest[0].height();
    if((x>DrawRectList[0].x())&&(x<=DrawRectList[0].x() DrawRectList[0].width())&&(y>=DrawRectList[0].y())&&(y<=DrawRectList[0].y() DrawRectList[0].height()))
    {
        AddItem();
        qDebug()<<"LLLLLLLLL:::"<<lengList.count();
    }


    if(DrawRectList[0].y() DrawRectList[0].height()<0)
    {
        OperationClass::iscanUpRun=false;
        StopGame();
    }
    else if((DrawRectList[0].y())>=this->height())
    {
        OperationClass::iscanDownRun=false;
        StopGame();
    }else if((DrawRectList[0].x() DrawRectList[0].width())>=this->width())
    {
        OperationClass::iscanRightRun=false;
        OperationClass::isinitRightRun=false;
        StopGame();
    }
    else if(DrawRectList[0].x()<=0)
    {
        OperationClass::iscanLeftRun=false;
        StopGame();
    }
}

void MainWindow::PaintInitSnaker()
{
    for(int i=0;i<lengList.count();i  )
    {
        QRect rect;
        rect.setX(lengList[i]->x());
        rect.setY(lengList[i]->y());
        rect.setWidth(rectW);
        rect.setHeight(rectH);
        QPainter p;
        p.begin(this);
        p.setPen(QPen(Qt::red,1,Qt::SolidLine));
        p.setBrush(Qt::red);
        p.drawRect(rect);
    }
}

void MainWindow::StopGame()
{
    OperationClass::iscanLeftRun=false;
    OperationClass::iscanRightRun=false;
    OperationClass::iscanUpRun=false;
    OperationClass::isinitRightRun=false;
    OperationClass::iscanDownRun=false;
    QWidget MBwidget;
    MBwidget.setWindowFlags(Qt::WindowStaysOnTopHint);
    QMessageBox::information(&MBwidget, tr("Waring"), tr("GameOver!"));
    OperationThread->exit(0);
    delete operation;
    delete OperationThread;

    thread->exit(0);
    delete CreatT;
    delete thread;
    this->close();
}

void MainWindow::AddItem()
{
    CreatTargetPoint::isflag=false;
    QPoint *p=new QPoint();
    p->setX(0);
    p->setY(0);
    lengList.append(p);
    targetRectTest.clear();
    emit clearSignal();
    emit SendMsg(Direction,lengList);

    return;
    if(Direction=="Left")
    {

    }
    if(Direction=="Right"||Direction=="")
    {
//        rect.setX(lengList.last()->x()-currentW);
//        rect.setY(lengList.last()->y());
//        rect.setWidth(currentW);
//        rect.setHeight(currentH);
//        lengList.append(rect);
    }
    if(Direction=="Up")
    {

    }
    if(Direction=="Bottom")
    {

    }
}

void MainWindow::CreatRandom()
{
    qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
    int PointW;
    int PointH;
    for(int i=0;i<currentW;i  )
    {
        PointW=qrand()%currentW;
    }
    for(int j=0;j<currentH;j  )
    {
        PointH=qrand()%currentH;
    }
    QPoint point;
    point.setX(PointW);
    point.setY(PointH);
    QRect rect;
    rect.setX(PointW);
    rect.setY(PointH);
    rect.setWidth(rectW);
    rect.setHeight(rectH);

    if(targetRectTest.count()==0)
    {
        targetRectTest.append(rect);
    }
}



void MainWindow::paintEvent(QPaintEvent *event)
{
    PaintSnaker();
}

void MainWindow::keyPressEvent(QKeyEvent *event)
{
    if(event->key()==Qt::Key_Left)
    {
        if(Direction=="Right"||Direction=="")
        {
            return;
        }
        Direction="Left";
        OperationClass::iscanLeftRun=true;
        OperationClass::iscanRightRun=false;
        OperationClass::iscanUpRun=false;
        OperationClass::isinitRightRun=false;
        OperationClass::iscanDownRun=false;
        emit SendMsg(Direction,lengList);
        qDebug()<<"current Operation is Key_Left";
    }
    else if(event->key()==Qt::Key_Right)
    {
        if(Direction=="Left")
        {
            return;
        }
        Direction="Right";
        OperationClass::iscanLeftRun=false;
        OperationClass::iscanRightRun=true;
        OperationClass::iscanUpRun=false;
        OperationClass::isinitRightRun=false;
        OperationClass::iscanDownRun=false;
        emit SendMsg(Direction,lengList);
        qDebug()<<"current Operation is Key_Right";
    }
    else if(event->key()==Qt::Key_Up)
    {
        if(Direction=="Down")
        {
            return;
        }
        Direction="Up";
        OperationClass::iscanUpRun=true;
        OperationClass::iscanRightRun=false;
        OperationClass::iscanLeftRun=false;
        OperationClass::iscanDownRun=false;
        OperationClass::isinitRightRun=false;
        emit SendMsg(Direction,lengList);
        qDebug()<<"current Operation is Key_Up";
    }
    else if(event->key()==Qt::Key_Down)
    {
        if(Direction=="Up")
        {
            return;
        }
        Direction="Down";
        OperationClass::iscanUpRun=false;
        OperationClass::iscanRightRun=false;
        OperationClass::iscanLeftRun=false;
        OperationClass::isinitRightRun=false;
        OperationClass::iscanDownRun=true;
        emit SendMsg(Direction,lengList);
        qDebug()<<"current Operation is Key_Down";
    }
}

void MainWindow::GetReturnMsg(QList<QRect> rectList)
{
    //qDebug()<<"Current get Rect is :::"<<rect;
    DrawRectList.clear();
    DrawRectList=rectList;
    this->update();
}

void MainWindow::GetTargetRect(QList<QRect> rectList)
{
    targetRect.clear();
    targetRect=rectList;
}