public static NullField GetInstance()
{
if (NullField.Instance == null)
{
NullField.Instance = new NullField();
}
return(NullField.Instance);
}
public void Restore(FieldMemento Memento)
{
this.SetStateSimple(Memento.State);
this.NextInChain = NullField.GetInstance();
this.Hero = null;
this.Resource = Memento.Resource == null ? null : Memento.Resource.ProduceOrigin();
}
public Field(int x, int y)
{
this.NextInChain = NullField.GetInstance();
this.Hero = null;
this.State = FieldStateNormal.GetInstance();
this.x = x;
this.y = y;
this.Observers = new List <Observer>();
}