public ItemGenerator(List <Item> seedPool, WorldWealth wealth)
{
// Make a copy
var treasurePool = seedPool.ToList();
// Make sure we copy all the input lists so we don't modify anything static.
List <List <Item> > tiers = new List <List <Item> >
{
ItemLists.UberTier.Where(item => treasurePool.Remove(item)).ToList(),
ItemLists.LegendaryWeaponTier.Where(item => treasurePool.Remove(item)).ToList(),
ItemLists.LegendaryArmorTier.Where(item => treasurePool.Remove(item)).ToList(),
ItemLists.RareWeaponTier.Where(item => treasurePool.Remove(item)).ToList(),
ItemLists.RareArmorTier.Where(item => treasurePool.Remove(item)).ToList(),
ItemLists.CommonWeaponTier.Where(item => treasurePool.Remove(item)).ToList(),
ItemLists.CommonArmorTier.Where(item => treasurePool.Remove(item)).ToList(),
ItemLists.AllConsumables.Where(item => treasurePool.Remove(item)).ToList(),
treasurePool.Where(x => x >= Item.Gold10 && x <= Item.Gold65000).ToList(),
};
List <int> ratios = Ratios[(int)wealth];
System.Diagnostics.Debug.Assert(tiers.Count == ratios.Count);
System.Diagnostics.Debug.Assert(Enum.GetValues(typeof(WorldWealth)).Length == Ratios.Length);
// Now populate the comined pool with a weighted average of all those above lists.
_pool = new List <List <Item> >();
for (int i = 0; i < ratios.Count(); ++i)
{
for (int j = 0; j < ratios[i]; ++j)
{
if (tiers[i].Any())
{
_pool.Add(tiers[i]);
}
}
}
}
public ItemShopSlot ShuffleShops(MT19337 rng, bool earlyAilments, bool randomizeWeaponsAndArmor, IEnumerable <Item> excludeItemsFromRandomShops, WorldWealth wealth)
{
var pointers = Get(ShopPointerOffset, ShopPointerCount * ShopPointerSize).ToUShorts();
RepackShops(pointers);
ShuffleShopType(ShopType.Weapon, pointers, rng, randomizeWeaponsAndArmor, excludeItemsFromRandomShops, wealth);
ShuffleShopType(ShopType.Armor, pointers, rng, randomizeWeaponsAndArmor, excludeItemsFromRandomShops, wealth);
ItemShopSlot result = null;
do
{
result = ShuffleShopType(ShopType.Item, pointers, rng);
} while (earlyAilments && !AilmentsCovered(pointers));
if (result == null)
{
throw new InvalidOperationException("Shop Location for Bottle was not set");
}
Put(ShopPointerOffset, Blob.FromUShorts(pointers));
return(result);
}
private ItemShopSlot ShuffleShopType(ShopType shopType, ushort[] pointers, MT19337 rng, bool randomize = false, IEnumerable <Item> excludeItemsFromRandomShops = null, WorldWealth wealth = WorldWealth.Normal)
{
var shops = GetShops(shopType, pointers);
bool shopsBlocked;
List <byte>[] newShops;
do
{
shopsBlocked = false;
newShops = new List <byte> [ShopSectionSize];
var allEntries = shops.SelectMany(list => list).ToList();
allEntries.Shuffle(rng);
int entry = 0;
for (int i = 0; i < ShopSectionSize; i++)
{
newShops[i] = new List <byte>();
if (pointers[(int)shopType + i] != ShopNullPointer)
{
newShops[i].Add(allEntries[entry++]);
}
}
while (entry < allEntries.Count)
{
var eligibleShops = new List <int>();
for (int i = 0; i < newShops.Length; i++)
{
if (newShops[i].Count > 0 && newShops[i].Count < 5 && !newShops[i].Contains(allEntries[entry]))
{
eligibleShops.Add(i);
}
}
// We might be unable to place an item in any shop because they're all full, or they already have that item. Start over.
if (eligibleShops.Count == 0)
{
shopsBlocked = true;
break;
}
int shopIndex = eligibleShops[rng.Between(0, eligibleShops.Count - 1)];
newShops[shopIndex].Add(allEntries[entry++]);
}
} while (shopsBlocked);
if (randomize)
{
if (shopType == ShopType.Weapon || shopType == ShopType.Armor)
{
// Shuffle up a byte array of random weapons or armor and assign them in place of the existing items.
var baseIndex = shopType == ShopType.Armor ? Item.Cloth : Item.WoodenNunchucks;
var indeces = Enumerable.Range((int)baseIndex, 40).Select(i => (Item)i).ToList();
foreach (var exclusion in excludeItemsFromRandomShops ?? new List <Item>())
{
indeces.Remove(exclusion);
}
ItemGenerator generator = new ItemGenerator(indeces, wealth);
for (int i = 0; i < newShops.Length; i++)
{
newShops[i] = newShops[i].Select(x => (byte)generator.SpliceItem(rng)).ToList();
}
}
}
// Zero-terminate the new shops.
foreach (var newShop in newShops)
{
newShop.Add(0);
}
ItemShopSlot result = null;
var pointer = pointers[(int)shopType];
for (int i = 0; i < ShopSectionSize; i++)
{
if (newShops[i].Count > 1)
{
var bottle =
newShops[i]
.Select((item, index) => new { item, index })
.FirstOrDefault(x => ((Item)x.item) == Item.Bottle);
if (bottle != null)
{
var location = ShopMapLocationsByIndex[i];
result = new ItemShopSlot(ShopPointerBase + pointer + bottle.index,
$"{Enum.GetName(typeof(MapLocation), location)}Shop{bottle.index + 1}",
location,
Item.Bottle);
}
Put(ShopPointerBase + pointer, newShops[i].ToArray());
pointers[(int)shopType + i] = pointer;
pointer += (ushort)newShops[i].Count;
}
}
return(result);
}
