Qt--2048小游戏

主要内容

1. 2048

一.2048小游戏

1.功能

1. 上下左右控制数字格子的移动 WASD
2. 4*4 格子移动操作，加操作
3. 开始游戏的按钮，重新游戏按钮
4. 得分计算
5. 判断游戏是否结束

2.源程序

代码如下（示例）:

MainWindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QKeyEvent>
#include <QPushButton>
#include <QPainter>
#include <QTime>
#include <QDebug> //用来 Debug
#include <QMessageBox>//自定义消息提示框
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = nullptr);
~MainWindow();
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=0;
bool state;
struct Ns{
int i;
int j;
};
public slots:
void slotStart();
private:
Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H

Main.cpp

#include "MainWindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.setFixedSize(320,480);
w.setWindowTitle("2048");
w.show();
return a.exec();
}

MainWindow.cpp

#include "MainWindow.h"
#include "ui_MainWindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
//初始化
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);//从(60,400)做一个 200*50 的按钮
//随机函数
qsrand(uint(QTime(0,0,0).secsTo(QTime::currentTime())));
connect(button,SIGNAL(clicked()),this,SLOT(slotStart()));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::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));
//在方块中 绘制 Text， 并且文本位置位于中部
p.drawText(QRectF(i*60+40,j*60+120,55,55),QString::number(2),QTextOption(Qt::Al
ignCenter));
}
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::Al
ignCenter));
}
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::Al
ignCenter));
}
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::A
lignCenter));
}
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::A
lignCenter));
}
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::A
lignCenter));
}
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 MainWindow::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;//忽略其他按钮
}
myRand();
update();
}
void MainWindow::slotStart(){
QMessageBox::about(this,"游戏规则","WSAD 控制方块上下左右移动");
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 MainWindow::PressUp(){
//移动
for (int i=0;i<4;i++) {
for (int j=1;j<4;j++) {
if(s[i][j]==0)continue;
for (int p=0;p<j;p++) {
//查看前面是否有空格子可移动
if(s[i][p]==0){
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]=2*s[i][j];
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 MainWindow::PressDown(){
//移动
for (int i=0;i<4;i++) {
for (int j=2;j>=0;j--) {
if(s[i][j]==0)continue;
for (int p=3;p>j;p--) {
//查看前面是否有空格子可移动
if(s[i][p]==0){
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]=2*s[i][j];
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 MainWindow::PressLeft(){
//移动
for (int j=0;j<4;j++) {
for (int i=1;i<4;i++) {
if(s[i][j]==0){
continue;
}
for (int p=0;p<i;p++) {
//查看前面是否有空格可移入
if(s[p][j] == 0){
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;
score+=s[i][j];
s[i+1][j]=0;
for(int p=i+2;p<4;p++){
s[p-1][j] = s[p][j];
}
}
}
}
}
void MainWindow::PressRight(){
//移动
for (int j=0;j<4;j++) {
for (int i=2;i>=0;i--) {
if(s[i][j]==0){
continue;
}
for (int p=3;p>i;p--) {
//查看前面是否有空格可移入
if(s[p][j] == 0){
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 MainWindow::myRand(){
int i=0,j=0;
//找出格子
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","分数为："+QString::number(score)+"
");
return;
}
int rand=qrand()%ni;
s[n[rand].i][n[rand].j]=2;
}

5.结果

---

总结

以上是今天要讲的内容，练习了2048小游戏。