Qt五子棋_qt五子棋代码

功能演示：

整体思路：

！！！！！！(只讲大概实现，源码最后会给，代码段只是一些伪代码)

1.画棋盘

1.1确定画板大小

#define ROW 15   //行
#define COL 15   //列
#define xsize 80
#define ysize 80   
 
//handchess_color用于之后颜色变化
 
void MainWindow::InitUI()
{
    QFont font;
    this->resize((ROW+7)*xsize,(COL+1)*ysize);//绘制画板大小
    this->setFixedSize((ROW+7)*xsize,(COL+1)*ysize);//固定了画板大小
    this->setWindowTitle("Qtchess");
    handchess_color = false; // false -> 黑色 true -> 白色
}

1.2在画板上画棋盘

格子x的边界距离为0.5个xsize，y的边界距离为0.5yszie

棋盘长为ROW * xsize

       宽为COL * ysize

void MainWindow::drawchessboard()
{
    QPainter painter(this);//创建画家对象
    painter.setPen(QPen(QColor(Qt::black),4));//给边框线颜色和大小
    painter.setBrush(Qt::gray);//给其他格子颜色
    for(int i = 0;i < COL;i++)
      for(int j = 0;j < ROW;j++)
           painter.drawRect((0.5+i)*xsize,(0.5+j)*ysize,xsize,ysize);//绘制棋盘
}

2.画跟随在鼠标棋子

void MainWindow::drawhandchess()
{
    QPainter painter(this);
    painter.setPen(QPen(QColor(Qt::transparent)));//给棋子边框设置透明
    if(handchess_color == true)
        painter.setBrush(Qt::white);
    else
        painter.setBrush(Qt::black);
    //获得鼠标单击点的全局位置，长度，宽度
    painter.drawEllipse(mapFromGlobal(QCursor::pos()),xsize/2,ysize/2);

3.显示上面的棋盘与跟随在鼠标上的棋子

利用绘画事件painterEvent与update()

void MainWindow::paintEvent(QPaintEvent *)
{
    drawchessboard();
    drawhandchess();
    drawchessitem();
    update();//会触发paintEvent事件
}

4.画棋盘上的棋子

4.1定义一个棋子的类

chessitem.h与chessitem.c

需要给定棋子颜色与位置

//chessitem.h
#ifndef CHESSITEM_H
#define CHESSITEM_H
#include <QPoint>
 
class ChessItem
{
public:
    ChessItem();
    ChessItem(QPoint point,bool iscolor);//构造函数 -- 完成对象的初始化
 
    //重载运算符 用于比较 位置,颜色
    bool operator==(const ChessItem &t1)const
    {
        return ((_pt == t1._pt) && (_color == t1._color));
    }
 
    QPoint _pt;//棋子位置
    bool _color;//棋子颜色
};
 
#endif // CHESSITEM_H
 
 
//chessitem.c
#include "chessitem.h"
 
ChessItem::ChessItem()
{
 
}
 
ChessItem::ChessItem(QPoint point,bool iscolor)
{
  _pt = point;
  _color = iscolor;
}

4.2利用鼠事件记录棋子数据

如果按下位置有棋子 return; 否则用Qvector记录下来

//QVector<ChessItem> p_chessItem;定义棋子集合
 
void MainWindow::mousePressEvent(QMouseEvent *event)
{
    QPoint pt;
    if(event->pos().x()/xsize >= 16)
        return;
    pt.setX(event->pos().x()/xsize);
    pt.setY(event->pos().y()/ysize);
    qDebug()<<"x:"<<event->pos().x()/xsize<<"y:"<<event->pos().y()/ysize<<' ';
    for(int i = 0;i <p_chessItem.size();i++)
    {
        ChessItem item = p_chessItem[i];
        if(item._pt == pt)
        return;
    }
 
    ChessItem item(pt,handchess_color);
    p_chessItem.append(item);//添加元素
}

4.3按下棋子实现函数

//在棋盘上形成棋子
void MainWindow::drawchessitem()
{
    QPainter painter(this);
    painter.setPen(QPen(QColor(Qt::transparent)));
    for(int i = 0;i < p_chessItem.size();i++)
    {
        ChessItem item = p_chessItem[i];
        if(item._color == true)
        {
            painter.setBrush(Qt::white);
        }
        else
        {
            painter.setBrush(Qt::black);
        }
        drawchessplace(painter,item._pt);
    }
}
 
void MainWindow::drawchessplace(QPainter &painter, QPoint &point)
{
    QPoint ptCenter((point.x() + 0.5) * xsize,(point.y() + 0.5) * ysize);
    painter.drawEllipse(ptCenter,xsize/2,ysize/2);
}

4.4检查是否五子连线

 
    int left = checkchess(item,QPoint(-1,0));
    int right = checkchess(item,QPoint(1,0));
    int leftup = checkchess(item,QPoint(-1,-1));
    int rightup = checkchess(item,QPoint(1,-1));
    int leftdown = checkchess(item,QPoint(-1,1));
    int rightdown = checkchess(item,QPoint(1,1));
    int up = checkchess(item,QPoint(0,-1));
    int down = checkchess(item,QPoint(0,1));
 
    if((left + right)>= 4 || (up + down)>=4 ||(leftup+rightdown)>=4 || (leftdown+rightup)>=4)
    {
        QString str = handchess_color ?"White victory!" : "Black victory";
        QMessageBox::information(NULL,"Game Over",str,QMessageBox::Yes);
        p_chessItem.clear();
    }
    handchess_color = !handchess_color;

int MainWindow::checkchess(ChessItem item,QPoint pt)
{
    int count = 0;
    item._pt += pt;
    //contains() -> This function requires the value type to have an implementation of operator==().
    while(p_chessItem.contains(item))
    {
        count++;
        item._pt+=pt;
    }
    return count;
}

5.悔棋功能

利用一个Button去实现

    font.setPointSize(20);
    button = new QPushButton("悔棋",this);
    button->setFont(font);
    button->move((ROW+1)*xsize,13.5*ysize);
    button->resize(5.5*xsize,2.0*ysize);
    connect(button,SIGNAL(clicked(void)),this,SLOT(chessback()));
 
//悔棋功能:
void MainWindow::chessback()
{
   if(!p_chessItem.empty())
   {
       QPainter painter(this);
       ChessItem item = p_chessItem[p_chessItem.size()-1];
       qDebug() << item._pt << ' ';
       p_chessItem.pop_back();
   }
   else
       qDebug()<<"empty";
}

 6.总结

1.棋子棋盘显示都是通过paintEvent()去显示,鼠标按下容器记录下数据再paintEvent()中drawchessitem()去显示。

2.不懂函数可以通过F1打开Qt assitant查看或上网搜搜。个人不展开说，主要体会思路

7.源码

链接：https://pan.baidu.com/s/1N69Ic5mA6Q9kSRayIMBQ9Q?pwd=y259 
提取码：y259