如何在JavaFX中实现游戏的控制系统？

Question

I am trying to create a control system for my simple 2D game using javaFX. I did extensive research and was unable to come up with anything.

What I want to do: I want to set a series of special key events to control a ship and to bring up a pause menu. When I was trying to get a pause menu to display using something similar to this

gameScene.setOnKeyPressed(new EventHandler<KeyEvent>() {
        public void handle(KeyEvent e) {
            if (e.equals(KeyCode.P) {

            }
        }
    }); 

I get a "The method setOnKeyPressed(EventHandler) in the type Scene is not applicable for the arguments (new EventHandler(){})" warning in reference to the type argument of EventHandler. I have seen examples of this expression being used in this exact way. I want 'P' to be the key to pull up the pause menu. I am unsure why I receive this error. On a side vote I am wondering what method I should call to display a Scene or Pane?

Answer 1

The way I have done it is having the onKeyPressed set on the Root Pane of the Scene.

So something like

BorderPane root = new BorderPane();
root.setOnKeyPressed((KeyEvent e) -> {
    if (e.getCode().equals(KeyCode.P) {
        //Open Pause Menu  
    }
});

EDIT 1: Don't forget to use the root to open your scene.

Scene gameScene = new Scene(root);
stage.setScene(gameScene);
stage.show();