做个简单的黑白棋(2)

public class JMyButton extends JButton {
    private static final long serialVersionUID = -5948631467254568191L;

    public JMyButton(int x, int y) {
        this.x = x;
        this.y = y;

        if (!inited) {
             try {
                 black = new ImageIcon(ImageIO.read(new File("black.jpg")));
             } catch (IOException e) {}
             try {
                 white = new ImageIcon(ImageIO.read(new File("white.jpg")));
             } catch (IOException e) {}
             inited = true;
        }
    }

    public void setContent(int state) {
        switch (state) {
            case 0:
                this.setBackground(new Color(0, 128, 0));
                break;
            case 10:                               // 这个格子是个valid move, 高亮显示
                this.setBackground(new Color(0, 230, 0));
                break;
            case 1:
                if (black != null)
                    this.setIcon(black);
                this.setBackground(Color.BLACK);
                break;
            case -1:
                if (white != null)
                    this.setIcon(white);
                this.setBackground(Color.WHITE);
                break;
        }
        this.state = state;
    }
    public int getContent() {
        return state;
    }

    private int state;
    public int x, y;

    private static ImageIcon black;
    private static ImageIcon white;
    private static boolean inited;
}

    public void run() {
        jUndoButton.setEnabled(true);
        while (!board.isEndOfGame()) {
            ShowBoard(board);
            getPlayer(currentColor).play(board);
        }
        int val = board.getBlackScore() - board.getWhiteScore();
        String msg;
        if (val > 0)
            msg = "Black won by " + val + " stones";
        else if (val < 0)
            msg = "White won by " + -val + " stones";
        else
            msg = "Draw";
        jUndoButton.setEnabled(false);
        jStartButton.setEnabled(true);
        JOptionPane.showMessageDialog(this, msg);
    }

    public void actionPerformed(ActionEvent arg0) {
        synchronized (boardGUI) {
            JMyButton cell = (JMyButton) arg0.getSource();
            if (cell.getContent() == 10) {                   // 这个个子是一个valid move
                shootMoveEvent(cell.x, cell.y);
            }
        }
    }

package myothello;
public class HumanPlayer implements Player {
    public HumanPlayer(int color, Othello othello) {
        this.color = color;
        othello.addMoveListener(new Othello.MoveListener() {
            public void onMove(int x, int y, int color) {
                synchronized (HumanPlayer.this) {
                    if (color != HumanPlayer.this.color) return;
                    HumanPlayer.this.x = x;
                    HumanPlayer.this.y = y;
                    HumanPlayer.this.played = true;
                    HumanPlayer.this.notifyAll();
                }
            }
        });
    }

    public void play(Board board) {
        synchronized (this) {
            while (!played) {
                try {
                    this.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            if (x != -1) board.putStone(x, y);
            else board.pass();
            played = false;
        }
    }
    public int getColor() {
        return color;
    }
    private volatile int x, y;
    private boolean played;
    private int color;
}