Java Swing 2D 面板数组不使用 Swing 计时器重新绘制

Question

我是 Java Swing 的新手，我一直致力于创建一个 Connect 4 游戏，该游戏通过带有 gameRoom 的服务器支持多人游戏。我已经解决这个特殊问题将近 2 天，在解决它的同时解决了一些问题，例如停止使用 Thread.sleep 并彻底测试了游戏对象是否正确地传入和传出服务器。

我的架构方式是通过模型的 make move 命令提交每个动作。为了刷新 GUI，服务器将一个新的 Game 对象发送回模型并将控制器属性“setRepaint”标记为 true。然后，计时器会定期检查该属性是否为真并调用 repaintGrid() 方法。

经过数小时的尝试，我无法重新绘制游戏面板。

可能有帮助的几点：

• 如果我退出应用程序并使用已在其上移动的 Game 对象重新启动它，则会绘制面板。问题在于重绘方法。

• 模型是静态的，每次调用 Connect4App.model.getGameFromServer() 时都会更新它的游戏属性。不确定这是否会导致问题，但如果我打印正在重新绘制为红色/蓝色的面板，我可以验证服务器在每次迭代中成功更新了游戏对象。

• 框架层次结构如下： guiMain 是 gamePanel 的容器，它有一个网格布局，每个都由一个 GridPanel 面板填充。 Grid 面板本质上是 Connect4 游戏令牌的插槽，这些是我尝试在 repaintGrid 方法中更新的插槽

  import java.awt.GridLayout;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.awt.event.MouseAdapter;
  import java.awt.event.MouseEvent;
  import javax.swing.JPanel;
  import javax.swing.Timer;
  
  public class GameController {
  
  MouseAdapter me;
  private JPanel gamePanel;
  private boolean setRepaint = false;
  
  /**
   * Constructor for the Game Controller. Takes in a view and a model
   * 
   * @param view
   * @param model
   */
  public GameController() {
      setupGridPanels();
      setupMouseAdapter();
      Connect4App.frame.setContentPane(Connect4App.guiMain);
      Connect4App.frame.setTitle("Game View");
      goIntoTimer();
  
  }
  
  /**
   * Repaint Boolean used by timer. Set to true by external program
   */
  public void setRepaint() {
      this.setRepaint = true;
  }
  
  /**
   * Swing Timer which checks if it needs to repaint every 8 seconds and if
   * so, calls repaintGrid
   */
  private void goIntoTimer() {
      Timer timer = new Timer(50, new ActionListener() {
          @Override
          public void actionPerformed(ActionEvent e) {
              Connect4App.model.getGameFromServer();
  
              if (setRepaint == true) {
                  repaintGrid();
                  setRepaint = false;
              }
  
          }
      });
      timer.setRepeats(true);
      timer.setDelay(8000);
      timer.start();
  
  }
  
  /**
   * Sets up the Initial Game Panels in the Connect4App.guiMain panel
   */
  private void setupGridPanels() {
      this.gamePanel = new JPanel();
      this.gamePanel.removeAll();
  
      // setting up the layout for, the game board.
      this.gamePanel.setLayout(new GridLayout(0, Connect4App.model.getGame().getGrid()[0].length));
  
      int numberOfRows = Connect4App.model.getGame().getGrid().length;
      int numberOfColumns = Connect4App.model.getGame().getGrid()[0].length;
  
      for (int r = 0; r < numberOfRows; r++) {
          for (int c = 0; c < numberOfColumns; c++) {
              Connect4App.guiMain.setCircleArc(r, c, new GridPanel(r, c));
              this.gamePanel.add(Connect4App.guiMain.getCircleArcs()[r][c]);
          }
      }
      Connect4App.guiMain.add(this.gamePanel);
  }
  
  /**
   * Sets up the mouse pressed event handleres for every panel
   */
  private void setupMouseAdapter() {
      MouseAdapter mc = new MouseAdapter() {
  
          @Override
          public void mousePressed(MouseEvent mc) {
  
              GridPanel cell = (GridPanel) mc.getSource();
  
              // this is the column that should go in the MakeMove message
              int column = cell.getColumn();
              int row = cell.getRow();
  
              if (Connect4App.model.getGame().getGrid()[row][column].getState() == 0) {
                  System.out.println("attempting to make move");
                  Connect4App.model.makeMove(column);
              }
          }
      };
  
      for (int r = 0; r < Connect4App.model.getGame().getGrid().length; r++) {
          for (int c = 0; c < Connect4App.model.getGame().getGrid()[0].length; c++) {
              Connect4App.guiMain.getCircleArcs()[r][c].addMouseListener(mc);
          }
      }
  }
  
  void repaintGrid() {
  
      // --> This is supposed to be working
      System.out.println("repainting");
  
      for (int r = 0; r < Connect4App.model.getGame().getGrid().length; r++) {
          for (int c = 0; c < Connect4App.model.getGame().getGrid()[0].length; c++) {
              Connect4App.guiMain.getCircleArcs()[r][c].validate();
              Connect4App.guiMain.getCircleArcs()[r][c].repaint();
          }
      }
  }
  }
  

任何帮助将不胜感激：-D

Answer 1

事实证明，我在通过 objectoutputstreams（游戏状态）发送回和第四个对象时遇到问题，而没有重置流，因此这导致客户端始终无法接收更新。上面的重绘代码正在工作。关闭线程，再次感谢。