Qt 2048

最近在学习Qt，就编个2048练练手，界面是不怎么好看，但算法应该是没什么问题的，要是有哪些可以优化的或者那些有错的地方，帮忙告知一下，3Q。

1.界面：

    界面是新建一个QDialog，然后再里面建一个 QWidget,再往QWidget内添加16个QLabel，在QWdiget的上面添加2个LCDNumber，一个用于显示步数，一个用于显示最大值。界面如图：

2，代码：

  (1) Dialog.h

#ifndef DIALOG_H#define DIALOG_H#include <QDialog>#include <QLabel>#include <QTime>#include <QFont>#include <QPalette>#include <QObject>#include <QKeyEvent>#include <QEvent>#include <QHash>#include <QLayout>#include <QtMath>namespace Ui {class Dialog;}class Dialog : public QDialog{    Q_OBJECT  public:    explicit Dialog(QWidget *parent = 0);    void newgame(); //开始游戏    void upmove(); //上移    void downmove(); //下移    void leftmove(); //左移    void rightmove(); //右移    void upremoveblank();    void downremoveblank();    void leftremoveblank();    void rightremoveblank();    int testup(); //能否上移测试    int testdown(); //能否上移测试    int testright(); //能否上移测试    int testleft(); //能否上移测试    int panemax(); //棋盘最大数    int ifwin(); //判断是否胜利    int ifGameOver();  //判断是否游戏结束    void update(const int& t);    ~Dialog();protected:    void keyPressEvent(QKeyEvent *event);private:    QWidget * widget;    int pane[4][4]; //棋盘    Ui::Dialog *ui;    QHash<int,QLabel*>labelHash;    QGridLayout *layout;};#endif // DIALOG_H

(2) Dialog.cpp

  

#include "dialog.h"#include "ui_dialog.h"#include <QKeyEvent>#include <QDebug>#include <QMessageBox>Dialog::Dialog(QWidget *parent) :    QDialog(parent),    ui(new Ui::Dialog){    ui->setupUi(this);    layout = new QGridLayout;    labelHash.insert(0,ui->label1);    labelHash.insert(1,ui->label2);    labelHash.insert(2,ui->label3);    labelHash.insert(3,ui->label4);    labelHash.insert(4,ui->label5);    labelHash.insert(5,ui->label6);    labelHash.insert(6,ui->label7);    labelHash.insert(7,ui->label8);    labelHash.insert(8,ui->label9);    labelHash.insert(9,ui->label10);    labelHash.insert(10,ui->label11);    labelHash.insert(11,ui->label12);    labelHash.insert(12,ui->label13);    labelHash.insert(13,ui->label14);    labelHash.insert(14,ui->label15);    labelHash.insert(15,ui->label16);    for(int i=0;i<16;i++)    {        labelHash.value(i)->setFrameShape(QLabel::Box);        labelHash.value(i)->setText(" ");        layout->addWidget(labelHash.value(i),i/4,i%4,1,1);    }    layout->setSpacing(4);    this->ui->widget->setLayout(layout);    this->ui->widget->resize(300,300);    newgame();}void Dialog::newgame() //开始游戏{     QTime time;     time = QTime::currentTime();     qsrand(time.msec()+time.second()*1000);     for(int i=0;i<=3;i++) //初始化棋盘        for(int j=0;j<=3;j++)             pane[i][j]=0;     int m=qrand()%4;     int n=qrand()%4;     int b=qrand()%4;     int q=qrand()%4;     pane[m][n]=pane[b][q]=2;     update(0);}void Dialog::upremoveblank(){    for(int j=0;j<4;j++){        int k = 0;        for(int i=0;i<4;i++){            if(pane[i][j] != 0)                pane[k++][j] = pane[i][j];            }        while(k<4)        {            pane[k][j] = 0;            k++;        }    }}void Dialog::downremoveblank(){    for(int j=0;j<4;j++){        int k = 3;        for(int i=3;i>=0;i--){            if(pane[i][j] != 0)                pane[k--][j] = pane[i][j];            }        while(k>=0)        {            pane[k][j] = 0;            k--;        }    }}void Dialog::leftremoveblank(){    for(int i=0;i<4;i++){        int k = 0;        for(int j=0;j<4;j++){            if(pane[i][j] != 0)                pane[i][k++] = pane[i][j];            }        while(k<4)        {            pane[i][k] = 0;            k++;        }    }}void Dialog::rightremoveblank(){    for(int i=0;i<4;i++){        int k = 3;        for(int j=3;j>=0;j--){            if(pane[i][j] != 0)                pane[i][k--] = pane[i][j];            }        while(k>=0)        {            pane[i][k] = 0;            k--;        }    }}void Dialog::upmove() //上移{     for(int j=0;j<4;j++){//每一列         for(int i=0;i<3;i++){             if(pane[i][j]==pane[i+1][j]){                 pane[i][j]=pane[i][j]+pane[i+1][j];                 pane[i+1][j]=0;                 //移除空格                 upremoveblank();             }         }     }}void Dialog::downmove() //下移{   for(int j=0;j<4;j++){//每一列       for(int i=3;i>=1;i--){           if(pane[i][j]==pane[i-1][j]){               pane[i][j]=pane[i][j]+pane[i-1][j];               pane[i-1][j]=0;               //移除空格               downremoveblank();           }       }   }}void Dialog::leftmove() //左移{   for(int i = 0;i < 4;i++){       for(int j = 0;j<3;j++){           if(pane[i][j]==pane[i][j+1]){               pane[i][j]+=pane[i][j+1];               pane[i][j+1]=0;               leftremoveblank();           }       }   }}void Dialog::rightmove() //右移{    for(int i=0;i<4;i++){        for(int j=3;j >= 1;j--){            if(pane[i][j]==pane[i][j-1]){                pane[i][j]+=pane[i][j-1];                pane[i][j-1]=0;                rightremoveblank();            }        }    }}int Dialog::testup() //能否上移测试{    int flag=0;    for(int j=0;j<=3;j++)        for(int i=0;i<3;i++)        {            if(pane[i][j] == pane[i+1][j] || pane[i][j] == 0)            {                flag=1;            }        }    return flag;}int Dialog::testdown() //测试能否下移{    int flag=0;    for(int j=0;j<=3;j++)        for(int i=3;i>0;i--)        {            if(pane[i][j] == pane[i-1][j] || pane[i][j] == 0)            {                 flag=1;            }        }    return flag;}int Dialog::testleft() //测试能否左移{    int flag=0;    for(int i=0;i<=3;i++)        for(int j=0;j<3;j++)        {           if(pane[i][j] == pane[i][j+1] || pane[i][j] == 0)            {                 flag=1;            }        }    return flag;}int Dialog::testright() //测试能否右移{    int flag=0;    for(int i=0;i<=3;i++)        for(int j=3;j>0;j--)        {           if(pane[i][j] == pane[i][j-1] || pane[i][j] == 0)            {                 flag=1;            }        }    return flag;}int Dialog::panemax() //棋盘最大数{    int max=pane[0][0];    for(int i=0;i<=3;i++)        for(int j=0;j<=3;j++)            if(pane[i][j]>max)                max=pane[i][j];    return max;}int Dialog::ifwin() //判断是否胜利{    int flag=0;    if(panemax()==2048)    {        QMessageBox::about(this,"Congratulation","You Win!");        flag=1;    }    return flag;}int Dialog::ifGameOver()  //判断是否游戏结束{    int flag=0;    if(testup()+ testdown() + testleft() + testright() == 0)    {        QMessageBox::about(this,"Failed","Game Over!");        flag=1;    }    return flag;}void Dialog::keyPressEvent(QKeyEvent *event){    QTime time;    static int t = 0;    time = QTime::currentTime();    qsrand(time.msec()+time.second()*1000);    switch (event->key()) {    case Qt::Key_Up:        upremoveblank();        upmove();        for(int i = 0,timer =0 ; i< 4,timer < 1; i ++){            if(pane[3][i] == 0)                if(qrand()%2){                    pane[3][i] = 2;                    timer++;                }            }        t++;        update(t);        break;    case Qt::Key_Down:        downremoveblank();        downmove();        for(int i = 0,timer =0 ; i< 4,timer < 1; i ++){            if(pane[0][i] == 0)                if(qrand()%2){                    pane[0][i] = 2;                    timer++;                }        }         t++;        update(t);        break;    case Qt::Key_Left:        leftremoveblank();        leftmove();       for(int i = 0,timer =0 ; i< 4,timer < 1; i ++){            if(pane[i][3] == 0)                if(qrand()%2){                    pane[i][3] = 2;                    timer ++;                }       }        t++;       update(t);        break;    case Qt::Key_Right:        rightremoveblank();        rightmove();        for(int i = 0,timer =0 ; i< 4,timer < 1; i ++){            if(pane[i][0] == 0)                if(qrand()%2){                    pane[i][0] = 2;                    timer++;                }        }         t++;        update(t);        break;    default:        break;    }}void Dialog::update(const int &t){    ifGameOver();    ifwin();    for(int i = 0 ; i < 4 ; i++)        for(int j = 0; j < 4; j++)        {            int p = i*4+j;            if(pane[i][j])            {                labelHash.value(p)->setText(QString::number(pane[i][j]));            }            else                labelHash.value(p)->setText(" ");            QFont ftt;            ftt.setPointSize(24);            labelHash.value(p)->setFont(ftt);            QPalette pa;            pa.setColor(QPalette::WindowText,Qt::white);            labelHash.value(p)->setPalette(pa);            labelHash.value(p)->setAlignment(Qt::AlignCenter);            labelHash.value(p)->setStyleSheet("background-color:red");        }    ui->lcdNumber->display(QString::number(panemax()));    ui->lcdNumber_2->display(QString::number(t));}Dialog::~Dialog(){    delete layout;    delete widget;    delete ui;}

(3) Main.cpp

#include "dialog.h"#include <QApplication>int main(int argc, char *argv[]){    QApplication a(argc, argv);    Dialog *mainwindow = new Dialog;    mainwindow->exec();    return a.exec();}