public SearchingState(Blob b) : base(b) { }
public HomeState(Blob b) : base(b) { }
public HomewardState(Blob b) : base(b) { }
public BlobState(Blob b) { this.blob = b; }
public AtFoodSiteState(Blob b, FoodSite foodSite) : base(b) { this.foodSite = foodSite; }