java - 尝试更新记分牌 - Java

Question

我正在为学校开发一个俄罗斯方 block 项目，当我试图在我的分数增加时更新记分板时，我偶然发现了一个问题。到目前为止，当我开始游戏时它会添加分数，但当分数增加时监听器不会更新。我正在与一个 friend 同时开发另一个 java 项目，我们有类似的工作方法，但即使我尝试从该项目复制函数，我也无法更新它。

评分函数:

private void scoreKeeper(int n) {
    switch (n) {
        case 1:
            score += 100;
            break;
        case 2:
            score += 300;
            break;
        case 3:
            score += 500;
            break;
        case 4:
            score += 800;
            break;
        default:
            break;
    }
}

public int getScore() {
    System.out.println(score);
    return score;
}

和框架:

class TetrisFrame extends JFrame implements BoardListener {

private Board board;
JLabel scoreLabel;

@Override public void boardChanged() {
        scoreLabel.setText("Score: " + board.getScore());
    }

public TetrisFrame(Board board) {
    super("Tetris");
    this.board = board;
    JButton close = new JButton("Exit");
    this.scoreLabel = new JLabel("Score: " + board.getScore());
    JMenuBar menuBar = new JMenuBar();
    final TetrisComponent frame = new TetrisComponent(board);

    JComponent.setDefaultLocale(Locale.ENGLISH);
    Locale.setDefault(Locale.ENGLISH);

    this.setJMenuBar(menuBar);
    menuBar.add(close);
    menuBar.add(scoreLabel);

    close.addActionListener(e -> {
        int selectedOption = JOptionPane.showConfirmDialog(null, "Do You want to close the game?\n" + "All progress will be lost!",
                "Exit game", JOptionPane.YES_NO_OPTION);
        if (selectedOption == JOptionPane.YES_OPTION) {
            System.exit(0);
        }
    });

    this.setLayout(new BorderLayout());
    this.add(frame, BorderLayout.CENTER);

    this.pack();
    this.setSize(frame.getPreferredX(board), frame.getPreferredY(board));
    this.setVisible(true);
    this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

    setFocusable(true);
    frame.requestFocusInWindow();

    }
}

更新记分板的函数:

private void checkForFullLine() {
    boolean fullLine = false;

    for (int h = 1; h < getHeight() - 1 ; h++) {
        for (int w = 1; w < getWidth() - 1; w++) {
            if (getSquares(w, h) == SquareType.EMPTY) {
                fullLine = false;
                break;
            }
            fullLine = true;

        }
        if (fullLine) {
            amountOfFullLines += 1;
            clearRow(h);
            moveBoardDown(h);
        }
    }
    scoreKeeper(amountOfFullLines);
    amountOfFullLines = 0;
}

谢谢:)

Answer 1

如果您在 EDT，您只需从 checkForFullLine() 调用即可

boardChanged() 

否则您可以使用 SwingUtilities.invokeLater 调用 GUI 更新，因为您不允许从其他线程直接更改 GUI:

SwingUtilities.invokeLater(new Runnable() {
    public void run() {
        boardChanged();
    }
});