Question

我需要为我的一门Java课程做一个游戏（否则我对Java的面向对象编程有一些基本了解）：我在上创建了一个javaFX场景（使用JFXFrame在摆动框架上进行）一类是我的视图，然后还有另外两类：处理游戏的和用于创建Player 对象的另一类。

现在，当游戏运行时，玩家轮流玩，我想显示currentPlayer的名称：我将该属性添加到Game类中，并添加了Player的名称是SimpleStringProperty，因为我阅读它后可以更轻松地使用侦听器。

问题是：我不知道该怎么做...对不起，我的问题似乎很愚蠢，但是我确实已经尝试了两个星期来 使用监听器 ，它没有任何作用：我的javaFX场景没有更新（我们看不到currentPlayer名称的更改）。我阅读了有关 binding 的信息，认为它可能会有所帮助，但我也不知道如何使用。

有什么想法或解释吗？非常感谢！

这是我的代码：

//视图

public class TestView {
    protected static Game game = new Game("Random Game");
    protected static BorderPane root = new BorderPane();
    protected static GridPane grilleHaut = new GridPane();

    public static void main(String[] args) throws InterruptedException {
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            TestView.initialisation();
        }
    });
    game.runSomething();
}

public static void initialisation() {
    JFrame mainSwingFrame = new JFrame("Game");
    JFXPanel mainFXFrame = new JFXPanel();
    mainSwingFrame.add(mainFXFrame);
    mainSwingFrame.setSize(1200, 900);
    mainSwingFrame.setVisible(true);
    mainSwingFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    Platform.runLater(new Runnable() {
        public void run() { initFX(mainFXFrame);}
    }  );
}

public static void initFX(JFXPanel frameFX) {
    Scene scene = newScene();
    frameFX.setScene(scene);
}

public static Scene newScene() {
    Scene scene = new Scene(root, Color.LIGHTGOLDENRODYELLOW);

    Text gameName = new Text(game.name);
    grilleHaut.add(gameName, 0, 0);
    GridPane.setConstraints(gameName, 0, 0, 1, 1, HPos.CENTER, VPos.TOP);

    Text turn = new Text("It's " + game.currentPlayer.getName() + "'s turn to play.");
    game.currentPlayer.name.addListener((observable, oldValue, newValue) -> {
        turn.setText("C'est au tour de : " + newValue);
    });
    game.currentPlayer.name.addListener(new ChangeListener<String>() {
        public void changed(ObservableValue<? extends String> o,String oldv,String newv) {
            turn.setText("It's time to play for : " + newv);
            System.out.println("accessed on TestView.");
        }
    });

    grilleHaut.add(turn, 0, 1);
    GridPane.setConstraints(turn, 0, 1, 1, 1, HPos.CENTER, VPos.CENTER);
    BorderPane.setAlignment(grilleHaut, Pos.TOP_RIGHT);
    root.setTop(grilleHaut);

    return(scene);
}

}

//一个游戏

class Game {
String name;
Player p1 = new Player("Person 1");
Player p2 = new Player("Human 2");
Player currentPlayer;

public Game(String n) {
    name=n;
    currentPlayer = p1;
}

public void runSomething() {
    //here goes code to run a game
    System.out.println(currentPlayer.getName());
    currentPlayer = p2; //at some point in the game, it's p2's time to play
    String pressToContinue; Scanner ptc = new Scanner(System.in); pressToContinue = ptc.nextLine();
    System.out.println(currentPlayer.getName());
    currentPlayer = p1; //and then p1's again
    String pressToContinue2; Scanner ptc2 = new Scanner(System.in); pressToContinue2 = ptc.nextLine();
    System.out.println(currentPlayer.getName());
}

}

//玩家

class Player {
protected StringProperty name = new SimpleStringProperty();
public Player(String n) { 
    name.setValue(n); 
    name.addListener(new ChangeListener<String>() {
        public void changed(ObservableValue<? extends String> o,String oldv,String newv) {
            Text turn = new Text("It's time to play for : " + newv);
            TestView.grilleHaut.add(turn, 0, 1);
            System.out.println("accessed on Player.");
        }
    });}
public String getName() { return name.getValue(); }

}

更新javafx场景：监听字符串属性和绑定

0 个答案: