QT写人与电脑石头剪刀布的小游戏

起因是看到一个判断石头剪刀布输赢的算式和一个石头剪刀布小游戏的界面图片，就想着用QT和这个算式实现一个简单的石头剪刀布游戏。具体算式和界面如下：

算式：

result = (manNum - computerNum + 4) % 3 - 1;

目标界面：

中间涉及到：

1、利用Qlabel显示图片

2、利用槽函数实现按钮触发Qlabel显示图片

3、利用vector容器实现石头剪刀布图片地址的存放，以便于利用随机数函数实现石头剪刀布的随机出现

内容比较幼稚简单，所以直接贴源码，中间各种优化大佬们可以给我讲解一下，不胜感激（也没啥优化头，很无聊了）：

代码：

1、UI

2、game.pro

#-------------------------------------------------
#
# Project created by QtCreator 2023-02-17T09:04:46
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = game
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which as been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0


SOURCES += \
        main.cpp \
        mainwindow.cpp

HEADERS += \
        mainwindow.h

FORMS += \
        mainwindow.ui

 3、mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

private slots:
    void on_pushButton_clicked();

    void on_pushButton_2_clicked();

    void on_pushButton_3_clicked();

private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

4、main.cpp

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    srand((unsigned)time(NULL)); //seed
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}

5、mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QString>
#include <QMessageBox>
#include <algorithm>
#include <iostream>
#include <iterator>
#include <random>
#include <vector>
#include <time.h>

using namespace std;
QString filename1 = "C:\\Users\\Administrator\\Desktop\\1.png";
QString filename2 = "C:\\Users\\Administrator\\Desktop\\2.png";
QString filename3 = "C:\\Users\\Administrator\\Desktop\\3.png";

//以下代码实现vector容器内三元素的随机选取（方法二）
//template<typename Iter, typename RandomGenerator>
//Iter select_randomly(Iter start, Iter end, RandomGenerator *g) {
//  std::uniform_int_distribution<> dis(0, std::distance(start, end) - 1);
//  std::advance(start, dis(*g));
//  return start;
//}

//template<typename Iter>
//Iter select_randomly(Iter start, Iter end) {
//  static std::random_device rd;
//  static std::mt19937 gen(rd());
//  return select_randomly(start, end, &gen);
//}

//比较函数，得出猜拳结果
QString competition(QString man,QString computer)
{
    int manNum = 0;
    int computerNum = 0;
    QString qstrResult = "";
    if(man == filename1)
    {
        manNum = 0;
    }
    else if(man == filename2)
    {
        manNum = 1;
    }
    else
    {
        manNum = 2;
    }

    if(computer == filename1)
    {
        computerNum = 0;
    }
    else if(computer == filename2)
    {
        computerNum = 1;
    }
    else
    {
        computerNum = 2;
    }

    int result = (manNum - computerNum + 4) % 3 - 1;
    if(result > 0)
    {
        qstrResult = "你赢了！";
    }
    else if(result == 0)
    {
        qstrResult = "平局。";
    }
    else
    {
        qstrResult = "抱歉，你输了。";
    }
    return qstrResult;
}



MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
        QImage* img1=new QImage,*img2=new QImage,*img3=new QImage;
        img1->load(filename1);
        img2->load(filename2);
        img3->load(filename3);
        ui->label_4->setPixmap(QPixmap::fromImage(*img1));
        ui->label_4->setScaledContents(true);
        ui->label_5->setPixmap(QPixmap::fromImage(*img2));
        ui->label_5->setScaledContents(true);
        ui->label_6->setPixmap(QPixmap::fromImage(*img3));
        ui->label_6->setScaledContents(true);
}



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

void MainWindow::on_pushButton_clicked()
{
    vector<QString> vec{filename1, filename2,filename3};

    //方法一：按更改vector容器下标的形式实现随机vector容器内随机图片的选择
//    srand((unsigned)time(NULL)); //seed
    int n = rand()%3;
    QString filename4 = vec[n];

    //方法二：结合select_randomly函数实现随机图片地址的赋值
    //QString filename4 = *select_randomly(vec.begin(),vec.end());
    //人选择剪刀，并展示出剪刀图品
    QImage* img=new QImage;
            if(! ( img->load(filename1) ) ) //加载图像
            {
                QMessageBox::information(this,
                                         tr("打开图像失败"),
                                         tr("打开图像失败!"));
                delete img;
                return;
            }
            ui->label_showImage->setPixmap(QPixmap::fromImage(*img));
            ui->label_showImage->setScaledContents(true);
    //电脑随机选择，并展示出图片
            QImage* img1=new QImage;
                    if(! ( img1->load(filename4) ) ) //加载图像
                    {
                        QMessageBox::information(this,
                                                 tr("打开图像失败"),
                                                 tr("打开图像失败!"));
                        delete img1;
                        return;
                    }
                    ui->label_showImage2->setPixmap(QPixmap::fromImage(*img1));
                    ui->label_showImage2->setScaledContents(true);

    QString final = competition(filename1,filename4);
    ui->label_8->setText(final);
}

void MainWindow::on_pushButton_2_clicked()
{
    vector<QString> vec{filename1, filename2,filename3};

    //方法一：按更改vector容器下标的形式实现随机vector容器内随机图片的选择
//    srand((unsigned)time(NULL)); //seed
    QString filename4 = vec[rand()%3];

    //方法二：结合select_randomly函数实现随机图片地址的赋值
    //QString filename4 = *select_randomly(vec.begin(),vec.end());
    //人选择剪刀，并展示出剪刀图品
    QImage* img=new QImage;
            if(! ( img->load(filename2) ) ) //加载图像
            {
                QMessageBox::information(this,
                                         tr("打开图像失败"),
                                         tr("打开图像失败!"));
                delete img;
                return;
            }
            ui->label_showImage->setPixmap(QPixmap::fromImage(*img));
            ui->label_showImage->setScaledContents(true);
    //电脑随机选择，并展示出图片
    QImage* img1=new QImage;
    if(! ( img1->load(filename4) ) ) //加载图像
    {
        QMessageBox::information(this,
                                 tr("打开图像失败"),
                                 tr("打开图像失败!"));
        delete img1;
        return;
    }
    ui->label_showImage2->setPixmap(QPixmap::fromImage(*img1));
    ui->label_showImage2->setScaledContents(true);
    QString final = competition(filename1,filename4);
    ui->label_8->setText(final);
}

void MainWindow::on_pushButton_3_clicked()
{
    vector<QString> vec{filename1, filename2,filename3};
    //方法一：按更改vector容器下标的形式实现随机vector容器内随机图片的选择
//    srand((unsigned)time(NULL)); //seed
    QString filename4 = vec[rand()%3];

    //方法二：结合select_randomly函数实现随机图片地址的赋值
    //QString filename4 = *select_randomly(vec.begin(),vec.end());
    //人选择剪刀，并展示出剪刀图品
    QImage* img=new QImage;
    if(! ( img->load(filename3) ) ) //加载图像
    {
        QMessageBox::information(this,
                                 tr("打开图像失败"),
                                 tr("打开图像失败!"));
        delete img;
        return;
    }
    ui->label_showImage->setPixmap(QPixmap::fromImage(*img));
    ui->label_showImage->setScaledContents(true);
    //电脑随机选择，并展示出图片
    QImage* img1=new QImage;
    if(! ( img1->load(filename4) ) ) //加载图像
    {
        QMessageBox::information(this,
                                 tr("打开图像失败"),
                                 tr("打开图像失败!"));
        delete img1;
        return;
    }
    ui->label_showImage2->setPixmap(QPixmap::fromImage(*img1));
    ui->label_showImage2->setScaledContents(true);

    QString final = competition(filename1,filename4);
    ui->label_8->setText(final);
}

最终效果：