////////////////
internal void InitializeBanners()
{
this.BannerItemTypesToNpcTypes = new Dictionary <int, ISet <int> >();
this.NpcTypesToBannerItemTypes = NPCBannerHelpers.GetNpcToBannerItemTypes();
foreach (var kv in this.NpcTypesToBannerItemTypes)
{
if (!this.BannerItemTypesToNpcTypes.ContainsKey(kv.Value))
{
this.BannerItemTypesToNpcTypes[kv.Value] = new HashSet <int>();
}
this.BannerItemTypesToNpcTypes[kv.Value].Add(kv.Key);
}
this.BannerItemTypes = new HashSet <int>(this.BannerItemTypesToNpcTypes.Keys);
}