java-----五子棋小游戏(三)-----判断输赢

一、代码实现

package org.like.game.frame;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class FiveChessFrame extends JFrame implements MouseListener
{
int width = Toolkit.getDefaultToolkit().getScreenSize().width;
int height = Toolkit.getDefaultToolkit().getScreenSize().height;
BufferedImage bgImage = null;
int x = 0;
int y = 0;

int[][] allChess = new int[19][19];
boolean isBlack = true;
boolean canPlay = true;//判断游戏可以继续落子，如果哪一方胜利，就置为false，不执行mousePressed的主体
public FiveChessFrame()
{
this.setTitle("五子棋");
this.setSize(500,500);
this.setLocation((width-500)/2,(height-500)/2);
this.setResizable(false);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);

this.addMouseListener(this);
try
{
bgImage = ImageIO.read(new File("F:/mypicture/java/background.jpg"));
}
catch (IOException e)
{
e.printStackTrace();
}
}

public void paint(Graphics g)
{
g.drawImage(bgImage,3,20,this);
g.setFont(new Font("黑体",Font.BOLD,20));
g.drawString("游戏信息:", 150, 50);
g.setFont(new Font("宋体",0,14));
g.drawString("黑方时间：无限制", 45, 470);
g.drawString("白方时间：无限制", 260, 470);
for(int i=0;i<19;i++)
{
g.drawLine(13, 70+20*i, 372, 70+20*i);
g.drawLine(13+20*i,70,13+20*i,430);
}
g.fillOval(71, 128, 4, 4);
g.fillOval(311, 128, 4, 4);
g.fillOval(311, 368, 4, 4);
g.fillOval(71, 368, 4, 4);
g.fillOval(311, 248, 4, 4);
g.fillOval(191, 128, 4, 4);
g.fillOval(71, 248, 4, 4);
g.fillOval(191, 368, 4, 4);
g.fillOval(191, 248, 4, 4);

for(int i=0;i<19;i++)
for(int j=0;j<19;j++)
{
if(allChess[i][j] == 1)
{
x = i * 20 + 13;
y = j * 20 + 70;
g.fillOval(x-7, y-7, 14, 14);
}
if(allChess[i][j] == 2)
{
x = i * 20 + 13;
y = j * 20 + 70;
g.setColor(Color.WHITE);
g.fillOval(x-7, y-7, 14, 14);
g.setColor(Color.BLACK);
g.drawOval(x-7, y-7, 14, 14);
}
}
}

@Override
public void mouseClicked(MouseEvent e)
{

}

@Override
public void mousePressed(MouseEvent e)
{
if(canPlay == true)
{
x = e.getX();
y = e.getY();
if(x >= 13 && x <= 372 && y >= 70 && y <= 430)
{
x = (x - 13) / 20;
y = (y - 70) / 20;
if(allChess[x][y] == 0)
{
if(isBlack)
{
allChess[x][y] = 1;
isBlack = false;
}
else
{
allChess[x][y] = 2;
isBlack = true;
}
this.repaint();
boolean winFlag = this.checkWin();//每下一个棋子就判断输赢
if(winFlag == true)//哪一方获胜就弹出窗口并将canPlay置为false
{
JOptionPane.showMessageDialog(this, "游戏结束"+(allChess[x][y] == 1?"黑方":"白棋")+"获胜！");
canPlay = false;
}
}
else
{
JOptionPane.showMessageDialog(this, "当前位置已经有旗子了，请重新落子！");
}
}
}

}

@Override
public void mouseReleased(MouseEvent e)
{

}

@Override
public void mouseEntered(MouseEvent e)
{

}

@Override
public void mouseExited(MouseEvent e)
{

}

public static void main(String[] args)
{
FiveChessFrame ff = new FiveChessFrame();

}

private boolean checkWin()//判断输赢
{
boolean flag = false;
int count = 1;
int color = allChess[x][y];
count = this.checkCount(1, 0, color);//判断横向
if (count >= 5)
{
flag = true;
}
else
{
// 判断纵向
count = this.checkCount(0, 1, color);
if (count >= 5)
{
flag = true;
}
else
{
// 判断右上、左下
count = this.checkCount(1, -1, color);
if (count >= 5)
{
flag = true;
}
else
{
// 判断右下、左上
count = this.checkCount(1, 1, color);
if (count >= 5)
{
flag = true;
}
}
}
}

return flag;
}

private int checkCount(int xChange, int yChange, int color)
{
int count = 1;
int tempX = xChange;
int tempY = yChange;
while (x + xChange >= 0 && x + xChange <= 18 && y + yChange >= 0&& y + yChange <= 18
&& color == allChess[x + xChange][y + yChange])
{//下一个需要判断的棋子在边界内并且与上一个棋子颜色相同则执行,这是判断x的右边和y的下边
count++;
if (xChange != 0)//xChange不为零，就判断x的右上和左下
xChange++;
if (yChange != 0) {
if (yChange > 0)
yChange++;
else {
yChange--;
}
}
}
xChange = tempX;
yChange = tempY;
while (x - xChange >= 0 && x - xChange <= 18 && y - yChange >= 0&& y - yChange <= 18
&& color == allChess[x - xChange][y - yChange])
{//继续判断x的左边和y的上边
count++;
if (xChange != 0)//xChange不为零，就判断x的左上和右下
xChange++;
if (yChange != 0) {
if (yChange > 0)
yChange++;
else {
yChange--;
}
}
}
return count;//返回当前判断的方向共有多少个同色棋子相连，共四个方向，横竖对角线四个
}

}

二、效果展示