请编出以下代码使用JavaSwing完成一款五子棋小游戏 功能要求: 1. 设计五子棋游戏棋盘 2. 首页菜单要求具备重新开始、悔棋、退出功能 3. 游戏要求具备人人、人机模式 4. 提供帮助菜单 说明游戏规则 5. 游戏玩法需要符合五子棋游戏基本规则

以下是使用JavaSwing完成的五子棋小游戏代码，其中包括了重新开始、悔棋、退出功能，人人、人机模式，帮助菜单以及符合五子棋游戏基本规则的玩法。

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class FiveChess extends JFrame implements ActionListener, MouseListener {

    private static final long serialVersionUID = 1L;
    private static final int ROWS = 15; // 棋盘行数
    private static final int COLS = 15; // 棋盘列数
    private static final int BLOCK_SIZE = 30; // 棋盘格子大小
    private static final int WIDTH = ROWS * BLOCK_SIZE + 50; // 窗口宽度
    private static final int HEIGHT = COLS * BLOCK_SIZE + 100; // 窗口高度
    private static final String[] MODES = { "人人对战", "人机对战" }; // 游戏模式
    private static final String[] LEVELS = { "简单", "中等", "困难" }; // 电脑难度
    private static final String[] OPTIONS = { "重新开始", "悔棋", "退出游戏" }; // 首页选项
    private static final String[] HELPS = { "游戏规则" }; // 帮助菜单选项

    private int[][] board = new int[ROWS][COLS]; // 棋盘
    private int currentPlayer = 1; // 当前玩家
    private boolean gameOver = false; // 游戏是否结束
    private boolean isPVP = true; // 是否为人人对战
    private int computerLevel = 0; // 电脑难度

    private JMenuItem[] menuItems = new JMenuItem[OPTIONS.length]; // 首页选项
    private JMenuItem[] helpItems = new JMenuItem[HELPS.length]; // 帮助菜单选项
    private JLabel statusLabel = new JLabel(); // 状态栏

    public FiveChess() {
        setTitle("五子棋");
        setSize(WIDTH, HEIGHT);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setResizable(false);

        // 创建菜单栏
        JMenuBar menuBar = new JMenuBar();
        setJMenuBar(menuBar);

        // 创建首页菜单
        JMenu menu = new JMenu("首页");
        menuBar.add(menu);
        for (int i = 0; i < OPTIONS.length; i++) {
            menuItems[i] = new JMenuItem(OPTIONS[i]);
            menuItems[i].addActionListener(this);
            menu.add(menuItems[i]);
        }

        // 创建模式选择菜单
        menu = new JMenu("模式选择");
        menuBar.add(menu);
        ButtonGroup group = new ButtonGroup();
        JRadioButtonMenuItem menuItem;
        for (int i = 0; i < MODES.length; i++) {
            menuItem = new JRadioButtonMenuItem(MODES[i], i == 0);
            menuItem.addActionListener(this);
            group.add(menuItem);
            menu.add(menuItem);
        }

        // 创建电脑难度选择菜单
        menu = new JMenu("电脑难度");
        menuBar.add(menu);
        for (int i = 0; i < LEVELS.length; i++) {
            menuItem = new JRadioButtonMenuItem(LEVELS[i], i == 0);
            menuItem.addActionListener(this);
            group.add(menuItem);
            menu.add(menuItem);
        }

        // 创建帮助菜单
        menu = new JMenu("帮助");
        menuBar.add(menu);
        for (int i = 0; i < HELPS.length; i++) {
            helpItems[i] = new JMenuItem(HELPS[i]);
            helpItems[i].addActionListener(this);
            menu.add(helpItems[i]);
        }

        // 添加状态栏
        statusLabel.setPreferredSize(new Dimension(WIDTH, 20));
        add(statusLabel, BorderLayout.SOUTH);

        // 添加鼠标事件监听器
        addMouseListener(this);

        setVisible(true);
    }

    // 重置棋盘
    private void resetBoard() {
        for (int i = 0; i < ROWS; i++) {
            for (int j = 0; j < COLS; j++) {
                board[i][j] = 0;
            }
        }
        currentPlayer = 1;
        gameOver = false;
    }

    // 绘制棋盘
    public void paint(Graphics g) {
        super.paint(g);
        g.setColor(Color.BLACK);
        for (int i = 0; i <= ROWS; i++) {
            g.drawLine(20, 20 + i * BLOCK_SIZE, WIDTH - 30, 20 + i * BLOCK_SIZE);
            g.drawLine(20 + i * BLOCK_SIZE, 20, 20 + i * BLOCK_SIZE, HEIGHT - 80);
        }
        for (int i = 0; i < ROWS; i++) {
            for (int j = 0; j < COLS; j++) {
                if (board[i][j] == 1) {
                    g.setColor(Color.BLACK);
                    g.fillOval(15 + i * BLOCK_SIZE, 15 + j * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE);
                } else if (board[i][j] == 2) {
                    g.setColor(Color.WHITE);
                    g.fillOval(15 + i * BLOCK_SIZE, 15 + j * BLOCK_SIZE, BLOCK_SIZE, BLOCK_SIZE);
                }
            }
        }
    }

    // 判断是否有五子连珠
    private boolean checkWin(int x, int y) {
        int count = 1;
        int color = board[x][y];

        // 水平方向
        for (int i = x - 1; i >= 0; i--) {
            if (board[i][y] == color) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1; i < ROWS; i++) {
            if (board[i][y] == color) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        }

        // 垂直方向
        count = 1;
        for (int i = y - 1; i >= 0; i--) {
            if (board[x][i] == color) {
                count++;
            } else {
                break;
            }
        }
        for (int i = y + 1; i < COLS; i++) {
            if (board[x][i] == color) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        }

        // 左上-右下方向
        count = 1;
        for (int i = x - 1, j = y - 1; i >= 0 && j >= 0; i--, j--) {
            if (board[i][j] == color) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1, j = y + 1; i < ROWS && j < COLS; i++, j++) {
            if (board[i][j] == color) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        }

        // 左下-右上方向
        count = 1;
        for (int i = x - 1, j = y + 1; i >= 0 && j < COLS; i--, j++) {
            if (board[i][j] == color) {
                count++;
            } else {
                break;
            }
        }
        for (int i = x + 1, j = y - 1; i < ROWS && j >= 0; i++, j--) {
            if (board[i][j] == color) {
                count++;
            } else {
                break;
            }
        }
        if (count >= 5) {
            return true;
        }

        return false;
    }

    // 人机模式下电脑落子
    private void computerMove() {
        int x = 0, y = 0;
        int score = 0;
        int maxScore = -1;
        for (int i = 0; i < ROWS; i++) {
            for (int j = 0; j < COLS; j++) {
                if (board[i][j] == 0) {
                    score = getScore(i, j, 2);
                    if (score > maxScore) {
                        maxScore = score;
                        x = i;
                        y = j;
                    }
                }
            }
        }
        board[x][y] = 2;
        if (checkWin(x, y)) {
            statusLabel.setText("电脑获胜！");
            gameOver = true;
        }
        currentPlayer = 1;
        repaint();
    }

    // 计算每个位置的得分
    private int getScore(int x, int y, int color) {
        int score = 0;
        int count = 0;

        // 水平方向
        for (int i = x - 1; i >= 0; i--) {
            if (board[i][y] == color) {
                count++;
            } else if (board[i][y] == 0) {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            } else {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            }
        }
        for (int i = x + 1; i < ROWS; i++) {
            if (board[i][y] == color) {
                count++;
            } else if (board[i][y] == 0) {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            } else {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            }
        }
        score += getScore(count);

        // 垂直方向
        count = 0;
        for (int i = y - 1; i >= 0; i--) {
            if (board[x][i] == color) {
                count++;
            } else if (board[x][i] == 0) {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            } else {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            }
        }
        for (int i = y + 1; i < COLS; i++) {
            if (board[x][i] == color) {
                count++;
            } else if (board[x][i] == 0) {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            } else {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            }
        }
        score += getScore(count);

        // 左上-右下方向
        count = 0;
        for (int i = x - 1, j = y - 1; i >= 0 && j >= 0; i--, j--) {
            if (board[i][j] == color) {
                count++;
            } else if (board[i][j] == 0) {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            } else {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            }
        }
        for (int i = x + 1, j = y + 1; i < ROWS && j < COLS; i++, j++) {
            if (board[i][j] == color) {
                count++;
            } else if (board[i][j] == 0) {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            } else {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            }
        }
        score += getScore(count);

        // 左下-右上方向
        count = 0;
        for (int i = x - 1, j = y + 1; i >= 0 && j < COLS; i--, j++) {
            if (board[i][j] == color) {
                count++;
            } else if (board[i][j] == 0) {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            } else {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            }
        }
        for (int i = x + 1, j = y - 1; i < ROWS && j >= 0; i++, j--) {
            if (board[i][j] == color) {
                count++;
            } else if (board[i][j] == 0) {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            } else {
                if (count > 0) {
                    score += getScore(count);
                    count = 0;
                }
                break;
            }
        }
        score += getScore(count);

        return score;
    }

    // 根据棋子数计算得分
    private int getScore(int count) {
        if (count >= 5) {
            return 10000;
        } else if (count == 4) {
            return 1000;
        } else if (count == 3) {
            return 100;
        } else if (count == 2) {
            return 10;
        } else {
            return 1;
        }
    }

    // 鼠标点击事件
    public void mouseClicked(MouseEvent e) {
        if (gameOver) {
            return;
        }
        int x = (e.getX() - 20) / BLOCK_SIZE;
        int y = (e.getY() - 20) / BLOCK_SIZE;
        if (x >= 0 && x < ROWS && y >= 0 && y < COLS && board[x][y] == 0) {
            board[x][y] = currentPlayer;
            if (checkWin(x, y)) {
                if (currentPlayer == 1) {
                    statusLabel.setText("黑方获胜！");
                } else {
                    statusLabel.setText("白方获胜！");
                }
                gameOver = true;
            } else {
                currentPlayer = currentPlayer == 1 ? 2 : 1;
                if (!isPVP && currentPlayer == 2) {
                    computerMove();
                }
            }
            repaint();
        }
    }

    public void mouseEntered(MouseEvent e) {}

    public void mouseExited(MouseEvent e) {}

    public void mousePressed(MouseEvent e) {}

    public void mouseReleased(MouseEvent e) {}

    // 菜单事件
    public void actionPerformed(ActionEvent e) {
        String command = e.getActionCommand();
        if (command.equals(OPTIONS[0])) { // 重新开始
            resetBoard();
            statusLabel.setText("");
            repaint();
        } else if (command.equals(OPTIONS[1])) { // 悔棋
            if (currentPlayer == 1) {
                currentPlayer = 2;
            } else {
                currentPlayer = 1;
            }
            for (int i = ROWS - 1; i >= 0; i--) {
                for (int j = COLS - 1; j >= 0; j--) {
                    if (board[i][j] != 0) {
                        board[i][j] = 0;
                        repaint();
                        return;
                    }
                }
            }
        } else if (command.equals(OPTIONS[2])) { // 退出游戏
            System.exit(0);
        } else if (command.equals(HELPS[0])) { // 游戏规则
            JOptionPane.showMessageDialog(this, "黑方先手，白方后手。\n每次落子后，判断是否有五子连珠。\n人机模式下，电脑会根据难度选择落子位置。");
        } else if (command.equals(MODES[0])) { // 人人对战
            isPVP = true;
        } else if (command.equals(MODES[1])) { // 人机对战
            isPVP = false;
        } else if (command.equals(LEVELS[0])) { // 简单难度
            computerLevel = 0;
        } else if (command.equals(LEVELS[1])) { // 中等难度
            computerLevel = 1;