汇智学堂-JAVA桌面游戏开发（五子棋之四：落子及判断输赢）

之四：落子及判断输赢
“程序主界面”上落子，判断输赢，效果见下图：


准备工作：

Images文件夹下，放置black.png及white.png图片一张。

代码实现：

package com.fivechess.view;
import javax.swing.JOptionPane;

public class WhichWin extends ChessBoard2{
//判断上下输赢 public void upOrDown(int x1,int y1,int[][] position,int whichColor) {
int sum=1; //向上判断 for(int i=0;i<5;i++) { if(position[x1][y1]==0) { return; }
if(position[x1][y1-i]==position[x1][y1-i-1]) { sum+=1; } else { break; } }
//向下判断 for(int i=0;i<5;i++) { if(position[x1][y1]==0) { return; }
if(position[x1][y1+i]==position[x1][y1+i+1]) { sum+=1; } else { break; } }
if(sum>=5) { if(whichColor==1) {
JOptionPane.showMessageDialog(null,"白棋胜利，游戏结束", "消息提示",
JOptionPane.INFORMATION_MESSAGE); } if(whichColor==0) {
JOptionPane.showMessageDialog(null,"黑棋胜利，游戏结束", "消息提示",
JOptionPane.INFORMATION_MESSAGE); } PCChessBoard2.isClose=1; initStart(); } }
//判断左右输赢
public void leftOrRight(int x1,int y1,int[][] position,int whichColor) {
int sum=1;
//向左判断
for(int i=0;i<5;i++) {
if(position[x1][y1]==0) { return; }
if(position[x1-i][y1]==position[x1-i-1][y1]) { sum+=1; } else { break; } }
//向右判断 for(int i=0;i<5;i++) { if(position[x1][y1]==0) { return; }
if(position[x1+i][y1]==position[x1+i+1][y1]) { sum+=1; } else { break; } }
if(sum>=5) { if(whichColor==1) {
JOptionPane.showMessageDialog(null,"白棋胜利，游戏结束", "消息提示",
JOptionPane.INFORMATION_MESSAGE); } if(whichColor==0) {
JOptionPane.showMessageDialog(null,"黑棋胜利，游戏结束", "消息提示",
JOptionPane.INFORMATION_MESSAGE); } PCChessBoard2.isClose=1; } }
//判断左上及右下输赢
public void Obliquedirection(int x1,int y1,int[][] position,int whichColor) {
int sum=1;
//向左上判断
for(int i=0;i<5;i++) {
if(position[x1][y1]==0) { return; }
if(position[x1-i][y1-i]==position[x1-i-1][y1-i-1]) { sum+=1; } else { break; }
} //向右判断 for(int i=0;i<5;i++) { if(position[x1][y1]==0) { return; }
if(position[x1+i][y1+i]==position[x1+i+1][y1+i+1]) { sum+=1; } else { break; }
} if(sum>=5) { if(whichColor==1) {
JOptionPane.showMessageDialog(null,"白棋胜利，游戏结束", "消息提示",
JOptionPane.INFORMATION_MESSAGE); } if(whichColor==0) {
JOptionPane.showMessageDialog(null,"黑棋胜利，游戏结束", "消息提示",
JOptionPane.INFORMATION_MESSAGE); } PCChessBoard2.isClose=1; } }
//判断右上及左下输赢
public void Obliquedirection2(int x1,int y1,int[][] position,int whichColor) {
int sum=1;
//向右上判断
for(int i=0;i<5;i++) {
if(position[x1][y1]==0) { return; }
if(position[x1+i][y1-i]==position[x1+i+1][y1-i-1]) { sum+=1; } else { break; }
} //向左下判断 for(int i=0;i<5;i++) { if(position[x1][y1]==0) { return; }
if(position[x1-i][y1+i]==position[x1-i-1][y1+i+1]) { sum+=1; } else { break; }
} if(sum>=5) { if(whichColor==1) {
JOptionPane.showMessageDialog(null,"白棋胜利，游戏结束", "消息提示",
JOptionPane.INFORMATION_MESSAGE); } if(whichColor==0) {
JOptionPane.showMessageDialog(null,"黑棋胜利，游戏结束", "消息提示",
JOptionPane.INFORMATION_MESSAGE); } PCChessBoard2.isClose=1; } }
}

修改后PCChessBoard2 类的代码

package com.fivechess.view;

import java.awt.event.MouseEvent;
import javax.swing.JOptionPane;

public class PCChessBoard2 extends ChessBoard2{
public int whichColor=0; private int ex; private int ey; public static int
isClose=0; WhichWin whichwin=new WhichWin(); //落下棋子 @Override public void
mouseMoved(MouseEvent e) { repaint(); } @Override public void
mouseClicked(MouseEvent e) { if(isClose==1) { return; } ex=e.getX();
ey=e.getY(); float x = (ex - 25) / 25; float y = (ey - 25) / 25; int x1 = (int)
x; int y1 = (int) y; if(whichColor==0&&position[x1][y1]==0) {
position[x1][y1]=1;//落下白棋子 whichColor=1; } else
if(whichColor==1&&position[x1][y1]==0) { position[x1][y1]=2;//落下黑色棋子
whichColor=0; } //判断各方向输赢 whichwin.upOrDown(x1,y1,position,whichColor);
whichwin.leftOrRight(x1,y1,position,whichColor);
whichwin.Obliquedirection(x1,y1,position,whichColor);
whichwin.Obliquedirection2(x1,y1,position,whichColor); }
}

ChessBoard2类

package com.fivechess.view;

import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

import javax.swing.JPanel;

/*

*
汇制棋盘的代码

*
*/
public class ChessBoard2 extends JPanel implements
MouseMotionListener,MouseListener{

public Image chessBoardImage;
public Image blackChess;
public Image whiteChess;

public static final int COLS=19;
public static final int RAWS=19;//棋盘的行数和列数
public int position[][]=new int[COLS][RAWS];

public ChessBoard2() {
chessBoardImage =
Toolkit.getDefaultToolkit().getImage(“images/chessBoard.jpg”);
blackChess= Toolkit.getDefaultToolkit().getImage(“images/black.png”);
whiteChess= Toolkit.getDefaultToolkit().getImage(“images/white.png”);
initStart(); addMouseListener(this);
}
/**
* 初始化数组为BLANK
*/
public void initStart()
{
for(int i=0;i<19;i++)
{
for(int j=0;j<19;j++)
{
position[i][j]= 0;//“0”代表当前无棋子
}
}
}

//汇制棋盘
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(chessBoardImage, 0, 0,null);
for (int i = 0; i < 19; i++) { for (int j = 0; j < 19; j++) { if
(position[i][j] ==2) { g.drawImage(blackChess, 13+i * 25 , 13+j * 25 , null); }
else if (position[i][j] ==1) { g.drawImage(whiteChess, 13+i * 25 , 13+j * 25 ,
null); } } }
}

@Override
public void mouseClicked(MouseEvent e) {
}
/**
* 按下鼠标时，记录鼠标的位置，并改写数组的数值，重新绘制图形
* @param e
*/
@Override
public void mousePressed(MouseEvent e) {
}
@Override
public void mouseReleased(MouseEvent e) {
}
@Override public void mouseEntered(MouseEvent e) { } @Override public void
mouseExited(MouseEvent e) { } @Override public void mouseDragged(MouseEvent e)
{ // TODO Auto-generated method stub } @Override public void
mouseMoved(MouseEvent e) { // TODO Auto-generated method stub }
}

• « 上一篇：十年阿里工作心得（月薪80k）
• » 下一篇：作为一个程序员: 这么奇葩搞笑的代码注释你见过吗?