private void addNewFoodSprites() {
		Collection<Food> foods = getFacade().getFood(getWorld());
		if (foods != null) {
			for (Food food : foods) {
				FoodSprite sprite = getSpriteOfTypeFor(FoodSprite.class, food);
				if (sprite == null) {
					createFoodSprite(food);
				}
			}
		}
	}