panel.addWidget(new Label(panel.getResX() - 20f, 30f, "Food level :"), 6f, 71f);
foodBar = new ProgressBar(panel.getResX() - 20f, 30f);
foodBar.setMinValue(0);
foodBar.setMaxValue(100);
panel.addWidget(foodBar, 6f, 92f);
action = new Label(panel.getResX() - 20f, 30f, "Action :");
panel.addWidget(action, 6f, 121f);
final Button button = new Button(100f, 30f, "Tuer");