/// <summary>
/// Copy constructor.
/// </summary>
/// <param name="other">a Gnu to be copied</param>
public Gnu(Gnu other) : base(other)
{
this.TonsEaten = other.TonsEaten;
}
/// <summary>
/// Return an animal of the wanted type, so that the MainForm or AnimalManager don't have to.
/// Most arguments are strings. They need to be pre-validated.
/// </summary>
/// <param name="name">the name of this individual animal</param>
/// <param name="age">the age of this individual animal</param>
/// <param name="gender">the gender of this animal</param>
/// <param name="categoryProperty">a property that is relevant for the category of this animal, such as for mammals or for birds.</param>
/// <param name="speciesProperty">a property that is relevant for the species that this animal belongs to.</param>
/// <param name="species">the species of the animal to be returned. Used to interpret the property arguments.</param>
/// <returns>an Animal of the requested kind.</returns>
public static Animal MakeAnimal(string name,
int age,
Gender gender,
string categoryProperty,
string speciesProperty,
string species)
{
int toothcount, numberEaten;
double wingspan, speed;
Animal animal = null;
switch (species)
{
case "Bear":
if (int.TryParse(categoryProperty, out toothcount))
{
if (int.TryParse(speciesProperty, out numberEaten))
{
animal = new Bear(name, gender, age, toothcount, numberEaten);
}
}
break;
case "Gnu":
if (int.TryParse(categoryProperty, out toothcount))
{
if (int.TryParse(speciesProperty, out numberEaten))
{
animal = new Gnu(name, gender, age, toothcount, numberEaten);
}
}
break;
case "Eagle":
if (double.TryParse(categoryProperty, out wingspan))
{
if (double.TryParse(speciesProperty, out speed))
{
animal = new Eagle(name, gender, age, wingspan, speed);
}
}
break;
case "Penguin":
if (double.TryParse(categoryProperty, out wingspan))
{
if (double.TryParse(speciesProperty, out speed))
{
animal = new Penguin(name, gender, age, wingspan, speed);
}
}
break;
default:
// If execution arrives here, an unsupported species has been requested.
throw new NotImplementedException();
}
return(animal);
}