通过单击gui类中的新游戏按钮来启动JavaFx中的游戏

Question

我是初学者。我正在制作一个简单的2D游戏。我有以下JavaFx游戏应用程序...我想通过单击另一个gui类的“新建游戏”按钮来启动游戏。我怎样才能做到这一点？我应该调用启动方法还是什么？我想点击“新游戏”按钮来运行我的游戏

我的代码：

public class ColorRun extends Application {

private static final double KEYBOARD_MOVEMENT_DELTA = 5;
private static final double RECT_WIDTH = 200;
private static final double RECT_HEIGHT = 70;
private static final double RECT_MAX_Y = 800;

private static Rectangle createRectangle(double x) {
    Rectangle rect = new Rectangle(x, 0, RECT_WIDTH, RECT_HEIGHT);
    rect.setStroke(Color.BLACK);
    rect.setArcWidth(10);
    rect.setArcHeight(10);
    return rect;
}

private final Random random = new Random();

private void randomizeColors(Rectangle[] rects, Circle circle, List<Color> colors) {
    Collections.shuffle(colors, random);
    for (int i = 0; i < rects.length; i++) {
        rects[i].setFill(colors.get(i));
    }
    circle.setFill(colors.get(random.nextInt(colors.size())));
}

@Override
public void start(Stage primaryStage) {
    List<Color> colors = Arrays.asList(Color.RED, Color.GREEN, Color.BLUE, Color.YELLOW, Color.GREY);

    Circle circle = new Circle(650, 700, 20);
    Rectangle[] rectangles = new Rectangle[5];
    for (int i = 0; i < rectangles.length; i++) {
        rectangles[i] = createRectangle(RECT_WIDTH * i);
    }

    Pane root = new Pane();
    root.setPrefHeight(RECT_MAX_Y);
    for (Rectangle rect : rectangles) {
        root.getChildren().add(rect);
    }
    root.getChildren().add(circle);

    final double frameDuration = 16;
    final double iterationDuration = 4000;
    final int framesPerIteration = (int) (iterationDuration / frameDuration + 1);
    randomizeColors(rectangles, circle, colors);

    Timeline timeline = new Timeline();

    class FrameHandler implements EventHandler<ActionEvent> {

        KeyCode code;
        private int frame = 1;

        @Override
        public void handle(ActionEvent event) {
            if (frame == 0) {
                randomizeColors(rectangles, circle, colors); // change colors when iteration is done
            }

            // move circle, if key is pressed
            if (code != null) {
                switch (code) {
                    case RIGHT:
                        circle.setCenterX(circle.getCenterX() + KEYBOARD_MOVEMENT_DELTA);
                        break;
                    case LEFT:
                        circle.setCenterX(circle.getCenterX() - KEYBOARD_MOVEMENT_DELTA);
                        break;
                }
            }

            // move rects & check intersection
            final Paint color = circle.getFill();
            final double cx = circle.getCenterX();
            final double cy = circle.getCenterY();
            final double r2 = circle.getRadius() * circle.getRadius();
            boolean lost = false;
            for (Rectangle rect : rectangles) {
                rect.setY(frame * RECT_MAX_Y / framesPerIteration);
                // check for intersections with rects of wrong color
                if (rect.getFill() != color) {

                    double dy = Math.min(Math.abs(rect.getY() - cy),
                            Math.abs(rect.getY() + rect.getHeight() - cy));
                    dy = dy * dy;

                    if (dy > r2) {
                        continue; // y-distance too great for intersection
                    }
                    if (cx >= rect.getX() && cx <= rect.getX() + rect.getWidth()) {
                        lost = true;
                    } else {
                        double dx = Math.min(Math.abs(rect.getX() - cx),
                                Math.abs(rect.getX() + rect.getWidth() - cx));
                        if (dx * dx + dy <= r2) {
                            lost = true;
                        }
                    }
                }
            }
            frame = (frame + 1) % framesPerIteration;
            if (lost) {
                timeline.stop();
            }

        }
    }

    FrameHandler frameHandler = new FrameHandler();

    Scene scene = new Scene(root);

    // keep track of the state of the arrow keys
    scene.setOnKeyPressed(evt -> {
        KeyCode code = evt.getCode();
        switch (code) {
            case RIGHT:
            case LEFT:
                frameHandler.code = code;
                break;
        }
    });
    scene.setOnKeyReleased(evt -> {
        KeyCode code = evt.getCode();
        if (frameHandler.code == code) {
            frameHandler.code = null;
        }
    });

    primaryStage.setScene(scene);

    timeline.getKeyFrames()
            .add(new KeyFrame(Duration.millis(frameDuration), frameHandler));
    timeline.setCycleCount(Timeline.INDEFINITE);

    timeline.play();

    primaryStage.show();
}


    public static void main(String[] args) {
        launch(args);

    }
}