Java Swing 实现字母连连看小游戏的代码

以下是一个简单的 Java Swing 实现字母连连看小游戏的代码：

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

public class LetterLinkGame extends JFrame {

    private static final long serialVersionUID = 1L;

    private static final int ROWS = 6;
    private static final int COLS = 9;
    private static final int BUTTON_WIDTH = 60;
    private static final int BUTTON_HEIGHT = 60;
    private static final String[] LETTERS = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J"};

    private JButton[][] buttons;
    private List<String> letters;
    private JButton selectedButton;
    private int movesLeft;
    private int score;

    public LetterLinkGame() {
        setTitle("Letter Link Game");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setResizable(false);

        letters = new ArrayList<>();
        for (int i = 0; i < ROWS * COLS / 2; i++) {
            letters.add(LETTERS[i]);
            letters.add(LETTERS[i]);
        }
        Collections.shuffle(letters);

        JPanel mainPanel = new JPanel(new GridLayout(ROWS, COLS));
        buttons = new JButton[ROWS][COLS];
        for (int i = 0; i < ROWS; i++) {
            for (int j = 0; j < COLS; j++) {
                JButton button = new JButton();
                button.setPreferredSize(new java.awt.Dimension(BUTTON_WIDTH, BUTTON_HEIGHT));
                button.setOpaque(true);
                button.setBackground(Color.WHITE);
                button.addActionListener(new ActionListener() {
                    @Override
                    public void actionPerformed(ActionEvent e) {
                        JButton clickedButton = (JButton) e.getSource();
                        if (selectedButton == null) {
                            selectedButton = clickedButton;
                            selectedButton.setBackground(Color.LIGHT_GRAY);
                        } else if (selectedButton == clickedButton) {
                            selectedButton.setBackground(Color.WHITE);
                            selectedButton = null;
                        } else if (selectedButton.getText().equals(clickedButton.getText())) {
                            selectedButton.setBackground(Color.GREEN);
                            clickedButton.setBackground(Color.GREEN);
                            selectedButton.setEnabled(false);
                            clickedButton.setEnabled(false);
                            selectedButton = null;
                            score += 10;
                            movesLeft--;
                            checkEndGame();
                        } else {
                            selectedButton.setBackground(Color.WHITE);
                            selectedButton = clickedButton;
                            selectedButton.setBackground(Color.LIGHT_GRAY);
                            movesLeft--;
                            checkEndGame();
                        }
                        updateScoreLabel();
                        updateMovesLeftLabel();
                    }
                });
                mainPanel.add(button);
                buttons[i][j] = button;
            }
        }

        JPanel scorePanel = new JPanel(new BorderLayout());
        scorePanel.add(createScoreLabel(), BorderLayout.WEST);
        scorePanel.add(createMovesLeftLabel(), BorderLayout.EAST);

        add(mainPanel, BorderLayout.CENTER);
        add(scorePanel, BorderLayout.SOUTH);

        pack();
        setLocationRelativeTo(null);
        setVisible(true);

        movesLeft = ROWS * COLS / 2;
    }

    private void checkEndGame() {
        if (movesLeft == 0) {
            JOptionPane.showMessageDialog(this, "Game Over! Your score is " + score + ".");
            System.exit(0);
        }
    }

    private void updateScoreLabel() {
        ((JButton) getContentPane().getComponent(ROWS * COLS)).setText("Score: " + score);
    }

    private void updateMovesLeftLabel() {
        ((JButton) getContentPane().getComponent(ROWS * COLS + 1)).setText("Moves Left: " + movesLeft);
    }

    private JButton createScoreLabel() {
        JButton scoreLabel = new JButton("Score: 0");
        scoreLabel.setPreferredSize(new java.awt.Dimension(100, BUTTON_HEIGHT));
        scoreLabel.setFocusable(false);
        scoreLabel.setEnabled(false);
        return scoreLabel;
    }

    private JButton createMovesLeftLabel() {
        JButton movesLeftLabel = new JButton("Moves Left: " + movesLeft);
        movesLeftLabel.setPreferredSize(new java.awt.Dimension(100, BUTTON_HEIGHT));
        movesLeftLabel.setFocusable(false);
        movesLeftLabel.setEnabled(false);
        return movesLeftLabel;
    }

    public static void main(String[] args) {
        new LetterLinkGame();
    }
}

该游戏的基本思路是：将所有字母随机打乱并排列在按钮上，玩家需要选择两个相同的字母按钮并将它们消除，直到所有字母按钮都被消除为止。在游戏过程中，程序会记录玩家的分数和剩余步数，并在所有字母按钮都被消除时结束游戏。