qt版本的简易五子棋 学习

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QMessageBox> #define CHESS_ROWS 18 #define CHESS_COLUMES 18 #define RECT_WIDTH 25 #define RECT_HEIGHT 25 MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { setWindowTitle(QString("简易五子棋")); setWindowFlags(windowFlags() & ~Qt::WindowMaximizeButtonHint); // 禁止最大化按钮 setFixedSize(480, 480); // 禁止拖动窗口大小 ui->setupUi(this); // resize(480,480); m_bIsBlackItem=0; m_items.clear(); } MainWindow::~MainWindow() { delete ui; } void MainWindow::paintEvent(QPaintEvent *event) { DrawChessBroad(); //绘制棋子 DrawItem(); update(); } void MainWindow::DrawChessBroad() { QPainter painter(this); QPen pen; pen.setColor(Qt::black); pen.setWidth(2); QBrush brush(QColor(Qt::darkYellow)); painter.setPen(pen); painter.setBrush(brush); for(int j=0;j<CHESS_ROWS;j++) { for(int i=0;i<CHESS_COLUMES;i++) { painter.drawRect((i+0.5)*RECT_WIDTH,(j+0.5)*RECT_HEIGHT,RECT_WIDTH,RECT_HEIGHT); } } } void MainWindow::DrawItem() { QPainter painter(this); QPen pen; QBrush brush; pen.setColor(Qt::transparent);//透明颜色 painter.setPen(pen); for(int i=0;i<m_items.size();i++) { Item item = m_items[i]; if(item.m_bBlack) { painter.setBrush(Qt::black); }else{ painter.setBrush(Qt::white); } //获取棋子的位置 QPoint ptCenter((item.m_pt.x()+0.5)*RECT_WIDTH,(item.m_pt.y()+0.5)*RECT_HEIGHT); //绘制棋子，棋子的半径为宽高的一半 painter.drawEllipse(ptCenter,RECT_WIDTH/2,RECT_HEIGHT/2); } } void MainWindow::mousePressEvent(QMouseEvent *event) { QPoint pt;//定义一个点 int chess_x = event->pos().x();//获取鼠标点击的x坐标 int chess_y = event->pos().y();//获取鼠标点击的y坐标 pt.setX(chess_x/RECT_WIDTH);//设置棋子x坐标 pt.setY(chess_y/RECT_HEIGHT);//设置棋子y坐标 //循环所有棋子判断落子处是否存在棋子 for(int i = 0;i<m_items.size();i++){ Item item = m_items[i]; if(item.m_pt == pt){ return; } } Item item(pt,m_bIsBlackItem);//设定棋子坐标及颜色 m_items.append(item);//添加棋子到所有的棋子 //判定是否赢 int Left = CountRoundItems(item,QPoint(-1,0));//获取左边棋子的数量 int Right = CountRoundItems(item,QPoint(+1,0)); int Up = CountRoundItems(item,QPoint(0,-1)); int Down = CountRoundItems(item,QPoint(0,+1)); int LeftUp = CountRoundItems(item,QPoint(-1,-1)); int LeftDown = CountRoundItems(item,QPoint(-1,+1)); int RightUp = CountRoundItems(item,QPoint(+1,-1)); int RightDown = CountRoundItems(item,QPoint(+1,+1)); //判定四种情况 if((Left+Right >= 4)|| (Up+Down)>=4 || (LeftUp+RightDown)>=4||(RightUp + LeftDown>=4)) { QString strTip = item.m_bBlack?"黑棋胜出！":"白棋胜出！";//判断当前落子的颜色给出相应的获胜提示 QMessageBox::information(this,"提示胜利",strTip,QMessageBox::Yes); m_items.clear();//清空所有落子 return; } m_bIsBlackItem = !m_bIsBlackItem;//切换棋子颜色 } int MainWindow::CountRoundItems(Item it, QPoint pt) { Item it1 = it;//通过it1来获取当前棋子 it1.m_pt += pt;//获取对应方向的棋子 int counter = 0; while (m_items.contains(it1)) {//判断it1是否在m_items中 counter++;//在这个方向的棋子数 it1.m_pt += pt; } return counter;//返回棋子数量 }