Qt 制作2048小游戏

HEADERS +=     Widget.h

SOURCES +=     Widget.cpp     main.cpp

QT += widgets gui

RESOURCES +=     ico.qrc

RC_ICONS = 2048.ico

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QKeyEvent>
#include <QPushButton>
#include <QPainter>
#include <QTime>

class Widget : public QWidget
{
    Q_OBJECT
public:
    explicit Widget(QWidget *parent = 0);
    void paintEvent(QPaintEvent *);
    void keyPressEvent(QKeyEvent *event);

    void PressUp();
    void PressDown();
    void PressLeft();
    void PressRight();
    void myRand();

    QPushButton *button;
    int s[4][4];
    int score;
    bool state;

    struct Ns{  //保存空格
        int i;
        int j;
    };


signals:

public slots:
    void slotStart();
};

#endif // WIDGET_H

#include "Widget.h"
#include <QMessageBox>

#include <QDebug>

Widget::Widget(QWidget *parent) :
      QWidget(parent),score(0),state(false)
{
    for(int i=0;i<4;i++)
        for(int j=0;j<4;j++)
            s[i][j]=0;

    button = new QPushButton("开始游戏",this);
    button->setGeometry(60,400,200,50);
    qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));//随机函数
    connect(button,SIGNAL(clicked()),this,SLOT(slotStart()));

    //connect(timer,SIGNAL(timeout()),this,SLOT(update()));
}

void Widget::paintEvent(QPaintEvent *)
{
    QPainter p(this);
    p.setBrush(Qt::blue);
    p.setFont(QFont("微软雅黑",20,700,false));

    QString strscore;
    p.drawText(QPoint(20,60),"分数："+QString::number(score));

    for(int i=0;i<4;i++)
        for(int j=0;j<4;j++){   
            p.setPen(Qt::transparent);
            if(s[i][j] == 0){
                p.setBrush(Qt::gray);
                p.drawRect(i*60+40,j*60+120,55,55);
            }
            else if(s[i][j] == 2){
                p.setBrush(Qt::red);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(2),QTextOption(Qt::AlignCenter));
            }
            else if(s[i][j] == 4){
                p.setBrush(Qt::darkRed);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(4),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 8){
                p.setBrush(Qt::green);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(8),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 16){
                p.setBrush(Qt::darkGreen);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(16),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 32){
                p.setBrush(Qt::yellow);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(32),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 64){
                p.setBrush(Qt::darkYellow);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(64),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 128){
                p.setBrush(Qt::cyan);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(128),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 256){
                p.setBrush(Qt::darkCyan);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(256),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 512){
                p.setBrush(Qt::magenta);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(512),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 1024){
                p.setBrush(Qt::darkMagenta);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(1024),QTextOption(Qt::AlignCenter));            }
            else if(s[i][j] == 2048){
                p.setBrush(Qt::blue);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(2048),QTextOption(Qt::AlignCenter));            }
            else{
                p.setBrush(Qt::darkBlue);
                p.drawRect(i*60+40,j*60+120,55,55);
                p.setPen(Qt::black);
                p.setFont(QFont("微软雅黑",10,700,false));
               p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(s[i][j]),QTextOption(Qt::AlignCenter));
            }

        }
}

void Widget::keyPressEvent(QKeyEvent *event)
{
    if(!state)
        return;

   switch(event->key())
   {
    case Qt::Key_W:
       PressUp();
         break;
    case Qt::Key_S:
       PressDown();
         break;
    case Qt::Key_A:
       PressLeft();
         break;
    case Qt::Key_D:
       PressRight();
         break;
    default:return;//忽略其他按键
   }

   myRand();
   update();

}

void Widget::slotStart()
{
   QMessageBox::about(this,"游戏规则","亲！~用W,S,A,D分别控制方块上下左右移动，知道了吗？");
    score = 0;
    for(int i=0;i<4;i++)
        for(int j=0;j<4;j++)
            s[i][j]=0;
    button->setText("重新游戏");

    int randi = qrand() % 4;
    int randj = qrand() % 4;
    s[randi][randj] = 2;

    state = true;
    update();

}

void Widget::PressUp()
{
    //移动
    for(int i=0;i<4;i++)
         for(int j=1;j<4;j++){
             if(s[i][j] == 0){
                 continue;//前格子为空
             }
            for(int p=0;p<j;p++){
                if(s[i][p] == 0){//查看前面是否有空格可移入              {
                    s[i][p] = s[i][j];
                    s[i][j] = 0;
                    break;
                }
            }
         }
    //相加
    for(int i=0;i<4;i++)
         for(int j=0;j<3;j++){
             if(s[i][j] == s[i][j+1]){
                 s[i][j] = s[i][j]*2;
                 s[i][j+1] = 0;
                 score += s[i][j];
                 for(int p=j+2;p<4;p++)
                     s[i][p-1] = s[i][p];
             }

         }
}

void Widget::PressDown()
{
    //移动
    for(int i=0;i<4;i++)
         for(int j=2;j>=0;j--){
             if(s[i][j] == 0){
                 continue;//前格子为空
             }
            for(int p=3;p>j;p--){
                if(s[i][p] == 0){//查看前面是否有空格可移入
                    s[i][p] = s[i][j];
                    s[i][j] = 0;
                    break;
                }
            }
         }
    //相加
    for(int i=0;i<4;i++)
         for(int j=3;j>0;j--){
             if(s[i][j] == s[i][j-1]){
                 s[i][j] = s[i][j]*2;
                 s[i][j-1] = 0;
                 score += s[i][j];
                 for(int p=j-2;p>=0;p--)
                     s[i][p+1] = s[i][p];
             }

         }
}

void Widget::PressLeft()
{
    //移动
    for(int j=0;j<4;j++)
         for(int i=1;i<4;i++){
             if(s[i][j] == 0){
                 continue;//前格子为空
             }
            for(int p=0;p<i;p++){
                if(s[p][j] == 0){//查看前面是否有空格可移入
                    s[p][j] = s[i][j];
                    s[i][j] = 0;
                    break;
                }
            }
         }
    //相加
    for(int j=0;j<4;j++)
         for(int i=0;i<3;i++){
             if(s[i][j] == s[i+1][j]){
                 s[i][j] = s[i][j]*2;
                 s[i+1][j] = 0;
                 score += s[i][j];
                 for(int p=i+2;p<4;p++)
                     s[p-1][j] = s[p][j];
             }

         }

}

void Widget::PressRight()
{
    //移动
    for(int j=0;j<4;j++)
         for(int i=2;i>=0;i--){
             if(s[i][j] == 0){
                 continue;//前格子为空
             }
            for(int p=3;p>i;p--){
                if(s[p][j] == 0){//查看前面是否有空格可移入
                    s[p][j] = s[i][j];
                    s[i][j] = 0;
                    break;
                }
            }
         }
    //相加
    for(int j=0;j<4;j++)
         for(int i=3;i>0;i--){
             if(s[i][j] == s[i-1][j]){
                 s[i][j] = s[i][j]*2;
                 s[i-1][j] = 0;
                 score += s[i][j];
                 for(int p=i-2;p>=0;p--)
                     s[p+1][j] = s[p][j];
             }

         }

}

void Widget::myRand()
{
    int i,j;
    //找出空的格子
   struct Ns n[15];
   int ni=0;
   for(i=0;i<4;i++)
       for(j=0;j<4;j++){
           if(s[i][j] == 0)
           {
               n[ni].i=i;
               n[ni].j=j;
               ++ni;
           }   
       }

   //判断游戏是否结束
   if(ni == 0){
       for(i=0;i<4;i++)
           for(j=0;j<3;j++)
               if(s[i][j] == s[i][j+1])
                  return;
       for(j=0;j<4;j++)
            for(i=0;i<3;i++)
                if(s[i][j] == s[i+1][j])
                   return;
      QMessageBox::about(this,"游戏失败","亲！ 你失败了哟~~  当前分数："+QString::number(score)+"       ");
      return;
   }

   int rand = qrand() % (ni);
   s[n[rand].i][n[rand].j] = 2;

}

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


int main(int argc,char** argv)
{
    QApplication app(argc,argv);

    Widget w;
    w.setFixedSize(320,480);
    w.setWindowTitle("2048");
    w.setWindowIcon(QIcon(":/2048.ico"));
    w.show();

    return app.exec();
}