public bool MoveExhibit(double oldX, double oldY, double newX, double newY)
{
var oldExhibit = GetExhibit(oldX, oldY);
var problem = IsProblemToBuild(newX, newY);
if (oldExhibit == null || problem)
{
return(false);
}
var equipment = oldExhibit.GetEquipment();
var newExhibit = new Exhibit(newX, newY, equipment);
var animals = oldExhibit.GetAnimals();
foreach (var animal in animals)
{
newExhibit.AddAnimal(animal);
}
RegisterExhibit(newExhibit);
RemoveExhibit(ref oldExhibit);
return(true);
}
private void RegisterExhibit(Exhibit newExhibit)
{
// would be some database INSERT
exhibits.Add(newExhibit);
}
private void RemoveExhibit(ref Exhibit exhibit)
{
exhibits.Remove(exhibit);
exhibit = null; //destroyed
}