Package demos.tutorials.user_input

Class KeyEventDemo

java.lang.Object

pi.Scene

demos.tutorials.user_input.KeyEventDemo

All Implemented Interfaces:

FrameUpdateListenerRegistration, KeyStrokeListener, KeyStrokeListenerRegistration, MouseClickListenerRegistration, MouseScrollListenerRegistration, RenderSource

public class KeyEventDemo
extends Scene
implements KeyStrokeListener

Constructor Summary

Constructors

Constructor	Description
KeyEventDemo()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)
void	onKeyDown(KeyEvent keyEvent)	Wird bei einem angemeldeten Beobachter aufgerufen, sobald eine Taste gedrückt wird.

Methods inherited from class pi.Scene

actors, add, addedActors, addLayer, backgroundColor, backgroundColor, backgroundColor, camera, center, clear, focus, focusCenter, frameUpdateListeners, gravity, gravity, gravity, gravityOfEarth, info, info, info, info, info, isPhysicsPaused, keyStrokeListeners, layer, meter, mouseClickListeners, mousePosition, mouseScrollListeners, physicsPaused, remove, removeLayer, render, renderOverlay, scene, visibleArea, visibleArea

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface pi.event.FrameUpdateListenerRegistration

addFrameUpdateListener, defer, delay, removeFrameUpdateListener, repeat, repeat, repeat, repeat, repeat

Methods inherited from interface pi.event.KeyStrokeListener

onKeyUp

Methods inherited from interface pi.event.KeyStrokeListenerRegistration

addKeyStrokeListener, removeKeyStrokeListener

Methods inherited from interface pi.event.MouseClickListenerRegistration

addMouseClickListener, removeMouseClickListener

Methods inherited from interface pi.event.MouseScrollListenerRegistration

addMouseScrollListener, removeMouseScrollListener

Constructor Details

KeyEventDemo

public KeyEventDemo()

Method Details

onKeyDown

public void onKeyDown(KeyEvent keyEvent)

Description copied from interface: KeyStrokeListener

Wird bei einem angemeldeten Beobachter aufgerufen, sobald eine Taste gedrückt wird. Die Methode wird erst dann wieder aufgerufen, wenn die Taste losgelassen und erneut gedrückt wurde.

 
 @Override
 public void onKeyDown(KeyEvent event)
 {
     switch (event.getKeyCode())
     {
     case KeyEvent.VK_UP:
         circle.moveBy(0, 1);
         break;

     case KeyEvent.VK_RIGHT:
         circle.moveBy(1, 0);
         break;
     }
 }
 
 

Specified by:

onKeyDown in interface KeyStrokeListener

Parameters:

keyEvent - Ein KeyEvent-Objekt, das Informationen enthält, welche Taste gedrückt würde. Die Tastennummer kann zum Beispiel über die Methode event.getKeyCode() abgefragt werden.

main

public static void main(String[] args)