private void setupKeys() {
    InputManager inputManager = app.getInputManager();

    inputManager.addMapping(
        "Rotate Left", new KeyTrigger(KeyInput.KEY_A), new KeyTrigger(KeyInput.KEY_LEFT));
    inputManager.addMapping(
        "Rotate Right", new KeyTrigger(KeyInput.KEY_D), new KeyTrigger(KeyInput.KEY_RIGHT));
    inputManager.addMapping(
        "Walk Forward", new KeyTrigger(KeyInput.KEY_W), new KeyTrigger(KeyInput.KEY_UP));
    inputManager.addMapping(
        "Walk Backward", new KeyTrigger(KeyInput.KEY_S), new KeyTrigger(KeyInput.KEY_DOWN));
    inputManager.addMapping("Jump", new KeyTrigger(KeyInput.KEY_SPACE));

    //        inputManager.addListener(this, "Strafe Left", "Strafe Right");
    inputManager.addListener(this, "Rotate Left", "Rotate Right");
    inputManager.addListener(this, "Walk Forward", "Walk Backward");
    inputManager.addListener(this, "Jump");

    inputManager = null;
  }
 public void removeListener() {
   app.getInputManager().removeListener(this);
 }
 public void addListener() {
   app.getInputManager().addListener(this, mappings);
 }