@onKeyAction(actions = {KeyAction.down, KeyAction.up, KeyAction.left, KeyAction.right, KeyAction.zoom_in, KeyAction.zoom_out}, states = {KeyState.held, KeyState.pressed})
	private void moveCamera(KeyActionEvent event){
		KeyAction action = event.getKeyAction();
		if(action.equals(KeyAction.down)){
			yD--;
		}else if(action.equals(KeyAction.up)){
			yD++;
		}else if(action.equals(KeyAction.left)){
			xD++;
		}else if(action.equals(KeyAction.right)){
			xD--;		
		}
		
		if(action.equals(KeyAction.zoom_in)){
			scaleD++;
		}else if(action.equals(KeyAction.zoom_out)){
			scaleD--;
		}
	}