// when something is destroyed it needs to call this so as to register with the AllObserver
public void RegisterDestruction(ObjectDetails entity)
{
RegisteredEntities.Remove(entity);
Console.WriteLine();
WriteMessage("{0} have fallen out of favour and entered the nothing.", entity.Name);
}
// when something is created it needs to call this so as to register with the AllObserver
public void RegisterCreation(ObjectDetails entity)
{
RegisteredEntities.Add(entity);
WriteMessage("{0} have arisen from the tincture of time.", entity.Name);
}
