Java小项目之：五子棋，你下棋下得过电脑吗？

Java小项目之：五子棋，你下棋下得过电脑吗？
Java五子棋功能要求：
1.创建窗口和设计一个棋盘界面
2.实现鼠标点击，棋子出现，黑白棋轮流下
3.能够判断五子相连输赢
4.添加重新开始，悔棋，退出按钮功能
这个java五子棋玩法丰富，但是界面简陋，十分适合java小白上手。界面是这样子的：

代码：
package fivechess1;

import java.awt.Color;
import java.awt.Font;

import java.awt.Graphics;

import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.Arrays;

import javax.swing.JOptionPane;
import javax.swing.JPanel;

public class GamePanel extends JPanel {

/**
 * 
 */
private static final long serialVersionUID = 5372121135068238487L;
private final int w = 20, h = 20, s = 20;
private int X, Y;
private int[] x = {}, y = {};
private Color[] c = {};
private String[][] str = new String[w][h];
private String white = "w", black = "b";
private String display = "开始游戏，黑棋先下";
private Controller controller;

public void setController(Controller controller) {
	this.controller = controller;
}

public void init() {
	display = "开始游戏，黑棋先下";
	x = Arrays.copyOf(x, 0);
	y = Arrays.copyOf(y, 0);
	c = Arrays.copyOf(c, 0);
	getStr();
}

public int getW() {
	return w;
}

public int getH() {
	return h;
}

public int getS() {
	return s;
}

public GamePanel() {
	this.setSize(w * s, h * s + 50);
	getStr();
	repaint();
	this.addMouseListener(new MouseListener() {

		@Override
		public void mouseReleased(MouseEvent e) {
			// TODO Auto-generated method stub

		}

		@Override
		public void mousePressed(MouseEvent e) {
			// TODO Auto-generated method stub
			X = e.getX();
			Y = e.getY();
			startGame();

		}

		@Override
		public void mouseExited(MouseEvent e) {
			// TODO Auto-generated method stub

		}

		@Override
		public void mouseEntered(MouseEvent e) {
			// TODO Auto-generated method stub

		}

		@Override
		public void mouseClicked(MouseEvent e) {
			// TODO Auto-generated method stub

		}
	});
}

@Override
protected void paintComponent(Graphics g) {
	super.paintComponent(g);
	g.setColor(Color.RED);
	for (int x = 0; x < w; x++) {
		for (int y = 0; y < h; y++) {
			g.fill3DRect(x * s, y * s, s, s, true);
		}
	}

	if (x.length > 0 && y.length > 0) {
		for (int i = 0; i < x.length; i++) {
			g.setColor(c[i]);
			g.fillOval(x[i] / s * s, y[i] / s * s, s, s);
		}

	}
	Font f = new Font("楷书", Font.PLAIN, 20);
	g.setColor(Color.BLUE);
	g.setFont(f);
	g.drawString(display, 10, h * s + 25);
}

public void startGame() {

	if (c.length % 2 == 0) {

		if (str[X / s][Y / s].equals("*")) {
			display = "黑方已下子，请白方下子";
			str[X / s][Y / s] = black;
			x = Arrays.copyOf(x, x.length + 1);
			x[x.length - 1] = X;
			y = Arrays.copyOf(y, y.length + 1);
			y[y.length - 1] = Y;
			c = Arrays.copyOf(c, c.length + 1);
			c[c.length - 1] = Color.BLACK;
			repaint();
			if (isSuccess(black)) {
				int options = JOptionPane.showConfirmDialog(GamePanel.this,
						"黑方胜,是否新开一局");
				if (options == JOptionPane.YES_OPTION) {
					controller.returnButton();
				} else if (options == JOptionPane.NO_OPTION) {
					System.exit(0);
				}

			}
		}

		else if (str[X / s][Y / s].equals(white)) {
			display = "所下位置被白方所占，请黑方重新下子";
			repaint();
		} else {
			display = "所下位置黑方已经占了，请黑方重新下子";
			repaint();
		}

	} else {

		if (str[X / s][Y / s].equals("*")) {
			display = "白方已下子，请黑方下子";
			str[X / s][Y / s] = white;
			x = Arrays.copyOf(x, x.length + 1);
			x[x.length - 1] = X;
			y = Arrays.copyOf(y, y.length + 1);
			y[y.length - 1] = Y;
			c = Arrays.copyOf(c, c.length + 1);
			c[c.length - 1] = Color.WHITE;
			repaint();
			if (isSuccess(white)) {
				int option = JOptionPane.showConfirmDialog(GamePanel.this,
						"白方胜,是否新开一局");
				if (option == JOptionPane.YES_OPTION) {
					controller.returnButton();
				} else if (option == JOptionPane.NO_OPTION) {
					System.exit(0);
				}
			}
		}

		else if (str[X / s][Y / s].equals(black)) {
			display = "所下位置被黑方所占，请白方重新下子";
			repaint();
		} else {
			display = "所下位置白方已經占了，请白方重新下子";
			repaint();
		}

	}

}

public void getStr() {
	for (int i = 0; i < str.length; i++) {
		for (int j = 0; j < str[i].length; j++) {
			str[i][j] = "*";
		}
	}
}

public boolean isSuccess(String player) {
	int left, right, up, down, lu, rd, ld, ru;
	left = getLeft(player);
	right = getRight(player);
	up = getUp(player);
	down = getDown(player);
	lu = getLU(player);
	rd = getRD(player);
	ld = getLD(player);
	ru = getRU(player);
	return left + right >= 4 || up + down >= 4 || lu + rd >= 4
			|| ld + ru >= 4;
}

public int getLeft(String player) {
	int left = 0;
	int i = X / s, j = Y / s;
	while (true) {
		if (i == 0) {
			break;
		}
		i--;
		if (!str[i][j].equals(player)) {
			break;
		}
		left++;
	}
	return left;
}

public int getRight(String player) {
	int right = 0;
	int i = X / s, j = Y / s;
	while (true) {
		if (i == w - 1) {
			break;
		}
		i++;
		if (!str[i][j].equals(player)) {
			break;
		}
		right++;
	}
	return right;
}

public int getUp(String player) {
	int up = 0;
	int i = X / s, j = Y / s;
	while (true) {
		if (j == 0) {
			break;
		}
		j--;
		if (!str[i][j].equals(player)) {
			break;
		}
		up++;
	}
	return up;
}

public int getDown(String player) {
	int down = 0;
	int i = X / s, j = Y / s;
	while (true) {
		if (j == h - 1) {
			break;
		}
		j++;
		if (!str[i][j].equals(player)) {
			break;
		}
		down++;
	}
	return down;
}

public int getLU(String player) {
	int lu = 0;
	int i = X / s, j = Y / s;
	while (true) {
		if (i == 0 || j == 0) {
			break;
		}
		i--;
		j--;
		if (!str[i][j].equals(player)) {
			break;
		}
		lu++;
	}
	return lu;
}

public int getRD(String player) {
	int rd = 0;
	int i = X / s, j = Y / s;
	while (true) {
		if (i == w - 1 || j == h - 1) {
			break;
		}
		i++;
		j++;
		if (!str[i][j].equals(player)) {
			break;
		}
		rd++;
	}
	return rd;
}

public int getRU(String player) {
	int ru = 0;
	int i = X / s, j = Y / s;
	while (true) {
		if (j == 0 || i == w - 1) {
			break;
		}
		i++;
		j--;
		if (!str[i][j].equals(player)) {
			break;
		}
		ru++;
	}
	return ru;
}

public int getLD(String player) {
	int ld = 0;
	int i = X / s, j = Y / s;
	while (true) {
		if (i == 0 || j == h - 1) {
			break;
		}
		i--;
		j++;
		if (!str[i][j].equals(player)) {
			break;
		}
		ld++;
	}
	return ld;
}

}
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