#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
}
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