private bool Starve(IAnimal animal)
{
if (!animal.Hungry)
{
return(false);
}
if (animal.NoFreeFat)
{
return(true);
}
var fatCards = animal.Upgrades.Where(x => x.UpgradeType == UpgradeType.Fat);
var fullFatCards = fatCards.Where(x => (x as UpgradeFat).Full);
if (!fullFatCards.Any())
{
return(true);
}
if (fullFatCards.Count() < animal.FoodNeeded - animal.FoodGot)
{
return(true);
}
for (int i = 0; i < animal.FoodNeeded - animal.FoodGot; i++)
{
(fullFatCards.First(x => (x as UpgradeFat).Full) as UpgradeFat).Full = false;
animal.AddFood(new FoodToken(false), null);
if (!animal.Hungry)
{
return(false);
}
}
return(true);
}
public void Feed(IAnimal animal)
{
if (animal == null)
{
throw new ArgumentNullException();
}
if (!Animals.Contains(animal))
{
throw new AnimalNotFoundException();
}
if (animal.Hungry)
{
animal.AddFood(new FoodToken(true), null);
}
else if (animal.CanEat)
{
((UpgradeFat)animal.Upgrades.First(x => x.UpgradeType == UpgradeType.Fat)).Full = true;
}
else
{
throw new AnimalAlreadyFedException();
}
}