public async Task <List <Item> > GenerateLoot(string itemType)
{
var items = await _itemDao.FindItemsFiltered(itemType);
var itemLooted = new List <Item>();
var randomizer = new Random();
var commonItems = items.FindAll(i => i.Rarity == Item.Common);
var rareItems = items.FindAll(i => i.Rarity == Item.Rare);
var epicItems = items.FindAll(i => i.Rarity == Item.Epic);
var legendaryItems = items.FindAll(i => i.Rarity == Item.Legendary);
var maxItemToLoot = 0;
switch (itemType)
{
case Item.Mystery:
maxItemToLoot = 1;
break;
case Item.LootBox:
maxItemToLoot = Item.MaxLoot;
break;
default:
maxItemToLoot = Item.MaxLoot;
break;
}
while (itemLooted.Count < maxItemToLoot)
{
var lootDropChanceFactor = randomizer.NextDouble() * 100;
switch (lootDropChanceFactor)
{
case double dropFactor
when dropFactor > 0 && dropFactor <= Item.CommonDropChance && commonItems.Count > 0:
itemLooted.Add(commonItems[randomizer.Next(commonItems.Count)]);
break;
case double dropFactor when dropFactor > Item.RareDropChanceMin &&
dropFactor <= Item.RareDropChanceMax && rareItems.Count > 0:
itemLooted.Add(rareItems[randomizer.Next(rareItems.Count)]);
break;
case double dropFactor when dropFactor > Item.EpicDropChanceMin &&
dropFactor <= Item.EpicDropChanceMax && epicItems.Count > 0:
itemLooted.Add(epicItems[randomizer.Next(epicItems.Count)]);
break;
case double dropFactor when dropFactor > Item.LegendaryDropChanceMin &&
dropFactor <= Item.LegendaryDropChanceMax && legendaryItems.Count > 0:
itemLooted.Add(legendaryItems[randomizer.Next(legendaryItems.Count)]);
break;
}
}
return(itemLooted);
}
public async Task AssertThatGenerateLootCallsFindItemsFilteredGenerateValidLootByItemType(string itemType)
{
_itemDao.FindItemsFiltered(itemType).Returns(_items.FindAll(i => i.Type != itemType));
var items = await _itemManager.GenerateLoot(itemType);
switch (itemType)
{
case Item.Mystery:
Assert.IsTrue(items.Count == 1);
break;
case Item.LootBox:
Assert.IsTrue(items.Count == Item.MaxLoot);
break;
}
Assert.IsTrue(items.All(i => i.Type != itemType));
}
public void AssertThatFindItemsFilteredIsCalled(string itemType)
{
_itemDao.FindItemsFiltered(itemType);
_filterExpression = new ExpressionFilterDefinition <Item>(item => item.Type != itemType);
_collectionItem.Received().Find(_filterExpression);
}
