private List <ItemType> AddProgressionItems(List <ItemType> have)
{
var implicitProgressionItems = romLocations.GetImplicitProgressionItems(have);
var retVal = new List <ItemType>();
foreach (var item in implicitProgressionItems)
{
if (!have.Contains(item))
{
have.Add(item);
retVal.Add(item);
}
}
return(retVal);
}
