fivechessappletdemo.java

java经典10例子

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import java.io.PrintStream;
import javax.swing.JComponent;
import javax.swing.JPanel;

/*
 *main方法创建了ChessFrame类的一个实例对象（cf），
 *并启动屏幕显示显示该实例对象。
 **/
public class FiveChessAppletDemo {
	public static void main(String args[]){
		ChessFrame cf = new ChessFrame();
		cf.show();
	}
}

/*
 *类ChessFrame主要功能是创建五子棋游戏主窗体和菜单
 **/
class ChessFrame extends JFrame implements ActionListener {
	private String[] strsize={"20x15","30x20","40x30"};
	private String[] strmode={"人机对弈","人人对弈"};
	public static boolean iscomputer=true,checkcomputer=true;
	private int width,height;
	private ChessModel cm;
	private MainPanel mp;
	
	//构造五子棋游戏的主窗体
	public ChessFrame() {
		this.setTitle("五子棋游戏");
		cm=new ChessModel(1);
		mp=new MainPanel(cm);
		Container con=this.getContentPane();
		con.add(mp,"Center");
		this.setResizable(false);
		this.addWindowListener(new ChessWindowEvent());
		MapSize(20,15);
		JMenuBar mbar = new JMenuBar();
		this.setJMenuBar(mbar);
		JMenu gameMenu = new JMenu("游戏");
		mbar.add(makeMenu(gameMenu, new Object[] {
			"开局", "棋盘","模式", null, "退出"
			}, this));
		JMenu lookMenu =new JMenu("视图");
		mbar.add(makeMenu(lookMenu,new Object[] {
			"Metal","Motif","Windows"
			},this));
		JMenu helpMenu = new JMenu("帮助");
		mbar.add(makeMenu(helpMenu, new Object[] {
			"关于"
		}, this));
	}

	//构造五子棋游戏的主菜单
	public  JMenu makeMenu(Object parent, Object items[], Object target){
		JMenu m = null;
		if(parent instanceof JMenu)
			m = (JMenu)parent;
		else if(parent instanceof String)
			m = new JMenu((String)parent);
		else
			return null;
		for(int i = 0; i < items.length; i++)
			if(items[i] == null)
				m.addSeparator();
			else if(items[i] == "棋盘"){
				JMenu jm = new JMenu("棋盘");
				ButtonGroup group=new ButtonGroup();
				JRadioButtonMenuItem rmenu;
				for (int j=0;j<strsize.length;j++){
					rmenu=makeRadioButtonMenuItem(strsize[j],target);
					if (j==0)
						rmenu.setSelected(true);
					jm.add(rmenu);
					group.add(rmenu);
				}
				m.add(jm);
			}else if(items[i] == "模式"){
				JMenu jm = new JMenu("模式");
				ButtonGroup group=new ButtonGroup();
				JRadioButtonMenuItem rmenu;
				for (int h=0;h<strmode.length;h++){
					rmenu=makeRadioButtonMenuItem(strmode[h],target);
					if(h==0)
						rmenu.setSelected(true);
					jm.add(rmenu);
					group.add(rmenu);
				}
				m.add(jm);
			}else
				m.add(makeMenuItem(items[i], target));
		return m;
	}
	
	//构造五子棋游戏的菜单项
	public  JMenuItem makeMenuItem(Object item, Object target){
		JMenuItem r = null;
		if(item instanceof String)
			r = new JMenuItem((String)item);
		else if(item instanceof JMenuItem)
			r = (JMenuItem)item;
		else
			return null;
		if(target instanceof ActionListener)
			r.addActionListener((ActionListener)target);
		return r;
	}
	
	//构造五子棋游戏的单选按钮式菜单项
	public  JRadioButtonMenuItem makeRadioButtonMenuItem(
    	Object item, Object target){
    	JRadioButtonMenuItem r = null;
    	if(item instanceof String)
    		r = new JRadioButtonMenuItem((String)item);
    	else if(item instanceof JRadioButtonMenuItem)
    		r = (JRadioButtonMenuItem)item;
    	else
    		return null;
    	if(target instanceof ActionListener)
    		r.addActionListener((ActionListener)target);
    	return r;
    }
    
    public void MapSize(int w,int h){
    	setSize(w * 20+50 , h * 20+100 );
    	if(this.checkcomputer)
    		this.iscomputer=true;
    	else
    		this.iscomputer=false;
    	mp.setModel(cm);
    	mp.repaint();
    }
    
    public boolean getiscomputer(){
    	return this.iscomputer;
    }
    
    public void restart(){
    	int modeChess = cm.getModeChess();
    	if(modeChess <= 3 && modeChess >= 1){
    		cm = new ChessModel(modeChess);
    		MapSize(cm.getWidth(),cm.getHeight());
    	}else{
    		System.out.println("\u81EA\u5B9A\u4E49");
    	}
    }
    
    public void actionPerformed(ActionEvent e){
    	String arg=e.getActionCommand();
    	try{
    		if (arg.equals("Windows"))
    			UIManager.setLookAndFeel(
    				"com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    		else if(arg.equals("Motif"))
				UIManager.setLookAndFeel(
					"com.sun.java.swing.plaf.motif.MotifLookAndFeel");
			else
				UIManager.setLookAndFeel(
					"javax.swing.plaf.metal.MetalLookAndFeel" );
			SwingUtilities.updateComponentTreeUI(this);
		}catch(Exception ee){}
		if(arg.equals("20x15")){
			this.width=20;
			this.height=15;
			cm=new ChessModel(1);
			MapSize(this.width,this.height);
			SwingUtilities.updateComponentTreeUI(this);
		}
		if(arg.equals("30x20")){
			this.width=30;
			this.height=20;
			cm=new ChessModel(2);
			MapSize(this.width,this.height);
			SwingUtilities.updateComponentTreeUI(this);
		}
		if(arg.equals("40x30")){
			this.width=40;
			this.height=30;
			cm=new ChessModel(3);
			MapSize(this.width,this.height);
			SwingUtilities.updateComponentTreeUI(this);
		}
		if(arg.equals("人机对弈")){
			this.checkcomputer=true;
			this.iscomputer=true;
			cm=new ChessModel(cm.getModeChess());
			MapSize(cm.getWidth(),cm.getHeight());
			SwingUtilities.updateComponentTreeUI(this);
		}
		if(arg.equals("人人对弈")){
			this.checkcomputer=false;
			this.iscomputer=false;
			cm=new ChessModel(cm.getModeChess());
			MapSize(cm.getWidth(),cm.getHeight());
			SwingUtilities.updateComponentTreeUI(this);
		}
		if(arg.equals("开局")){
			restart();
		}
		if(arg.equals("关于"))
			JOptionPane.showMessageDialog(this, "五子棋游戏测试版本", "关于", 0);
		if(arg.equals("退出"))
			System.exit(0);
	}
}

/*
 *类ChessModel实现了整个五子棋程序算法的核心
 */
class ChessModel {
	//棋盘的宽度、高度、棋盘的模式（如20×15）
	private int width,height,modeChess;
	//棋盘方格的横向、纵向坐标
	private int x=0,y=0;
	//棋盘方格的横向、纵向坐标所对应的棋子颜色，
	//数组arrMapShow只有3个值：1，2，3，-5，
	//其中1代表该棋盘方格上下的棋子为黑子，
	//2代表该棋盘方格上下的棋子为白子，
	//3代表为该棋盘方格上没有棋子，
	//-5代表该棋盘方格不能够下棋子
	private int[][] arrMapShow;
	//交换棋手的标识，棋盘方格上是否有棋子的标识符
	private boolean isOdd,isExist;

	public ChessModel() {}
	
	//该构造方法根据不同的棋盘模式（modeChess）来构建对应大小的棋盘
	public ChessModel(int modeChess){
		this.isOdd=true;
		if(modeChess == 1){
			PanelInit(20, 15, modeChess);
		}
		if(modeChess == 2){
			PanelInit(30, 20, modeChess);
		}
		if(modeChess == 3){
			PanelInit(40, 30, modeChess);
		}
	}
	
	//按照棋盘模式构建棋盘大小
	private void PanelInit(int width, int height, int modeChess){
		this.width = width;
		this.height = height;
		this.modeChess = modeChess;
		arrMapShow = new int[width+1][height+1];
		for(int i = 0; i <= width; i++){
			for(int j = 0; j <= height; j++){
				arrMapShow[i][j] = -5;
			}
		}
	}
	
	//获取是否交换棋手的标识符
	public boolean getisOdd(){
		return this.isOdd;
	}

	//设置交换棋手的标识符
	public void setisOdd(boolean isodd){
		if(isodd)
			this.isOdd=true;
		else
			this.isOdd=false;
	}
	
	//获取某棋盘方格是否有棋子的标识值
	public boolean getisExist(){
		return this.isExist;
	}
	
	//获取棋盘宽度
	public int getWidth(){
		return this.width;
	}
	
	//获取棋盘高度
	public int getHeight(){
		return this.height;
	}
	
	//获取棋盘模式
	public int getModeChess(){
		return this.modeChess;
	}

	//获取棋盘方格上棋子的信息
	public int[][] getarrMapShow(){
		return arrMapShow;
	}

	//判断下子的横向、纵向坐标是否越界
	private boolean badxy(int x, int y){
		if(x >= width+20 || x < 0)
			return true;
		return y >= height+20 || y < 0;
	}

	//计算棋盘上某一方格上八个方向棋子的最大值，
	//这八个方向分别是：左、右、上、下、左上、左下、右上、右下
	public boolean chessExist(int i,int j){
		if(this.arrMapShow[i][j]==1 || this.arrMapShow[i][j]==2)
			return true;
		return false;
	}

	//判断该坐标位置是否可下棋子
	public void readyplay(int x,int y){
		if(badxy(x,y))
			return;
		if (chessExist(x,y))
			return;
		this.arrMapShow[x][y]=3;
	}

	//在该坐标位置下棋子
	public void play(int x,int y){
		if(badxy(x,y))
			return;
		if(chessExist(x,y)){
			this.isExist=true;
			return;
		}else
			this.isExist=false;
		if(getisOdd()){
			setisOdd(false);
		this.arrMapShow[x][y]=1;
		}else{
			setisOdd(true);
			this.arrMapShow[x][y]=2;
		}
	}

	//计算机走棋
	/*
	 *说明：用穷举法判断每一个坐标点的四个方向的的最大棋子数，
	 *最后得出棋子数最大值的坐标，下子
	 **/
	public void computerDo(int width,int height){
		int max_black,max_white,max_temp,max=0;
		setisOdd(true);
		System.out.println("计算机走棋 ...");
		for(int i = 0; i <= width; i++){
			for(int j = 0; j <= height; j++){
				if(!chessExist(i,j)){//算法判断是否下子
					max_white=checkMax(i,j,2);//判断白子的最大值
					max_black=checkMax(i,j,1);//判断黑子的最大值
					max_temp=Math.max(max_white,max_black);
					if(max_temp>max){
						max=max_temp;
						this.x=i;
						this.y=j;
					}
				}
			}
		}
		setX(this.x);
		setY(this.y);
		this.arrMapShow[this.x][this.y]=2;
	}
	
	//记录电脑下子后的横向坐标
	public void setX(int x){
		this.x=x;
	}
	
	//记录电脑下子后的纵向坐标
	public void setY(int y){
		this.y=y;
	}
	
	//获取电脑下子的横向坐标
	public int getX(){
		return this.x;