Black market merchant shelves, bulk discount, bulk merchants, volume-driven taint, list-all

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/Decentralized.Domain/BmOrders.cs

@@ -5,6 +5,8 @@ using System.Linq;
 namespace Decentralized.Domain
 {
     public enum PayMode { Escrow, Advance }
+    /// <summary>商家类型：全新矿卡经销商、二手矿卡贩子、模组高科技、军火、证件芯片、药物，大宗商家随机出现。</summary>
+    public enum MerchantType { GpuNew, GpuUsed, Mods, Arms, Docs, Pharma, Bulk }
     public enum OrderState { Pending, Ready, Done, Refunded, Lost }
 
     /// <summary>黑市上的卖家：成交数与好评率公开；是不是骗子是隐藏的。</summary>
@@ -14,14 +16,19 @@ namespace Decentralized.Domain
         public int Trades;
         public int Rating;   // 好评率 %
         public bool Scam;
+        public MerchantType Type;
+        /// <summary>商家的价格系数（订单价 = 基础价 × 系数，各家不同）。</summary>
+        public double Factor;
+        public int Days => Type == MerchantType.Bulk ? Tuning.BmBulkDays : Tuning.BmDoorDays;
         /// <summary>只有成交数够多的卖家才接受提前放款。</summary>
         public bool Advance => Trades >= Tuning.BmAdvanceMinTrades;
     }
 
-    /// <summary>订单目录里的一件货：卖家、货、价格（订单价，已折扣）。</summary>
+    /// <summary>商家货架上的一种货：卖家、货、单价（订单价）、库存。</summary>
     public sealed class BmListing : BmGood
     {
         public int Seller;
+        public int Qty;
     }
 
     public sealed class BmOrder
@@ -30,6 +37,7 @@ namespace Decentralized.Domain
         public string Seller;
         public bool SellerScam;
         public PayMode Mode;
+        public int Count = 1;
         public string Model, FakeOf;
         public double Health;
         public int Price;
@@ -87,47 +95,114 @@ namespace Decentralized.Domain
         /// <summary>托管中和已提前放款但尚未交付的资金（信用点），平台跑路的概率随它增加。</summary>
         public double Held => Orders.Where(o => o.State == OrderState.Pending).Sum(o => (double)o.Price) + HeldSales;
 
-        public static int OrderPrice(long baseValue, GoodKind k = GoodKind.Contraband) => (int)Math.Max(1, Math.Round(baseValue * (1 + Extra(k)) * (1 - Tuning.BmOrderDiscount)));
+        /// <summary>批量折扣：一次订 5 件以上 95 折，10 件以上 9 折。</summary>
+        public static double BulkDiscount(int count) => count >= Tuning.BmBulk2Count ? Tuning.BmBulk2Discount : count >= Tuning.BmBulk1Count ? Tuning.BmBulk1Discount : 0;
+        public static int OrderTotal(int unit, int count) => (int)Math.Max(1, Math.Round(unit * count * (1 - BulkDiscount(count))));
         public static int EscrowFee(int price) => (int)Math.Ceiling(price * Tuning.BmEscrowFee);
         /// <summary>下单实付（信用点）：托管 = 订单价 + 托管费；提前放款 = 订单价打折。</summary>
         public static int Pay(int price, PayMode m) => m == PayMode.Escrow ? price + EscrowFee(price) : (int)Math.Round(price * (1 - Tuning.BmAdvanceDiscount));
 
         public double RugChance => Math.Min(Tuning.BmRugMax, Tuning.BmRugBase + Held / 10000.0 * Tuning.BmRugPerTenK);
 
-        /// <summary>每周重新生成卖家、目录和论坛情报（与现货同一天刷新）。</summary>
+        private static readonly MerchantType[] Regular = { MerchantType.GpuNew, MerchantType.GpuUsed, MerchantType.Mods, MerchantType.Arms, MerchantType.Docs, MerchantType.Pharma };
+
+        private static double F(Rng rng, double lo, double hi) => lo + rng.NextDouble() * (hi - lo);
+
+        /// <summary>商家类型对应的货（含货种、库存），按声望放开违禁等级。</summary>
+        private List<BmListing> MerchantGoods(int idx, BmSeller s, int day, int rep, Rng rng, Func<string, long> value)
+        {
+            var list = new List<BmListing>();
+            int n = s.Type == MerchantType.Bulk ? 2 : Tuning.BmMerchantListings;
+            var contra = new List<KeyValuePair<string, int>>();
+            switch (s.Type)
+            {
+                case MerchantType.Arms: contra = Pool.Where(x => ArmsIds.Contains(x.Key)).ToList(); break;
+                case MerchantType.Docs: contra = Pool.Where(x => !ArmsIds.Contains(x.Key)).ToList(); break;
+                case MerchantType.Pharma: contra = PharmaPool.ToList(); break;
+                case MerchantType.Bulk: contra = Pool.Concat(PharmaPool).ToList(); break;
+            }
+            contra = contra.Where(x => x.Value <= MaxLevel(rep)).ToList();
+            var tech = TechPool.ToList();
+            var gpus = UsedDealers.Pool(day);
+            for (int i = 0; i < n; i++)
+            {
+                int qty = s.Type == MerchantType.Bulk ? rng.Range(Tuning.BmBulkQtyMin, Tuning.BmBulkQtyMax) : s.Type == MerchantType.GpuNew ? rng.Range(Math.Max(1, Tuning.BmQtyMin - 1), Tuning.BmQtyMax - 2) : rng.Range(Tuning.BmQtyMin, Tuning.BmQtyMax);
+                double jitter = F(rng, 0.97, 1.03);
+                BmListing l = null;
+                bool gpuKind = s.Type == MerchantType.GpuNew || s.Type == MerchantType.GpuUsed;
+                if (s.Type == MerchantType.Bulk) gpuKind = false;
+                if (gpuKind)
+                {
+                    bool fresh = s.Type == MerchantType.GpuNew;
+                    var c = UsedDealers.Card(gpus, fresh ? 0 : Tuning.BmGpuFake, 0, rng);
+                    if (fresh) c.Health = 100;
+                    l = new BmListing { Item = "gpu:" + c.Model, Kind = GoodKind.Gpu, Level = 2, Model = c.Model, FakeOf = c.FakeOf, Health = c.Health, Price = (int)Math.Max(1, Math.Round(CardValue.Of(c.Model, c.Health) * s.Factor * jitter)) };
+                }
+                else if (s.Type == MerchantType.Mods || (s.Type == MerchantType.Bulk && tech.Count > 0 && (contra.Count == 0 || rng.Chance(0.4))))
+                {
+                    if (tech.Count == 0) continue;
+                    int k = rng.Range(0, tech.Count - 1);
+                    string id = tech[k]; tech.RemoveAt(k);
+                    long v = value(id);
+                    if (v <= 0) continue;
+                    l = new BmListing { Item = id, Kind = GoodKind.Tech, Level = 3, Price = (int)Math.Max(1, Math.Round(v * s.Factor * jitter)) };
+                }
+                else
+                {
+                    if (contra.Count == 0) continue;
+                    int k = rng.Range(0, contra.Count - 1);
+                    var pick = contra[k]; contra.RemoveAt(k);
+                    long v = value(pick.Key);
+                    if (v <= 0) continue;
+                    l = new BmListing { Item = pick.Key, Kind = GoodKind.Contraband, Level = pick.Value, Price = (int)Math.Max(1, Math.Round(v * s.Factor * jitter)) };
+                }
+                l.Seller = idx; l.Qty = qty;
+                list.Add(l);
+            }
+            return list;
+        }
+
+        private static readonly HashSet<string> ArmsIds = new HashSet<string> { "handmade_pistol", "printed_gun", "stun_baton", "revolver", "heavy_handmade_pistol", "flashbang_grenade", "smoke_grenade", "shotgun", "smg", "c4" };
+
+        /// <summary>每周重新生成商家、货架和论坛情报（与现货同一天刷新）：从 6 种类型里抽 BmMerchantCount 家，另有概率出现一家大宗商家。</summary>
         public void RefreshOrders(int day, int rep, Rng rng, Func<string, long> value)
         {
             Sellers.Clear(); Catalog.Clear(); Forum.Clear();
-            for (int i = 0; i < Tuning.BmSellerCount; i++)
+            var types = Regular.OrderBy(_ => rng.NextDouble()).Take(Tuning.BmMerchantCount).ToList();
+            if (rng.Chance(Tuning.BmBulkChance)) types.Add(MerchantType.Bulk);
+            foreach (var t in types)
             {
                 bool scam = rng.Chance(Tuning.BmScamSellerShare);
                 // 骗子多半是新号，也有刷过好评的老号
                 bool fresh = scam ? rng.Chance(0.6) : rng.Chance(0.25);
+                double lo = t == MerchantType.GpuNew ? Tuning.BmFactorNewMin : t == MerchantType.GpuUsed ? Tuning.BmFactorUsedMin : t == MerchantType.Bulk ? Tuning.BmFactorBulkMin : Tuning.BmFactorMin;
+                double hi = t == MerchantType.GpuNew ? Tuning.BmFactorNewMax : t == MerchantType.GpuUsed ? Tuning.BmFactorUsedMax : t == MerchantType.Bulk ? Tuning.BmFactorBulkMax : Tuning.BmFactorMax;
                 var s = new BmSeller
                 {
                     Name = NameA[rng.Range(0, NameA.Length - 1)] + "_" + NameB[rng.Range(0, NameB.Length - 1)] + rng.Range(1, 99),
-                    Scam = scam,
+                    Scam = scam, Type = t, Factor = F(rng, lo, hi),
                     Trades = fresh ? rng.Range(1, 12) : rng.Range(25, 220),
                     Rating = scam && !fresh ? rng.Range(94, 99) : fresh ? rng.Range(70, 100) : rng.Range(90, 99),
                 };
                 Sellers.Add(s);
                 if (scam && rng.Chance(0.5)) Forum.Add("scam:" + s.Name);
             }
-            int n = 0;
-            foreach (var g in Roll(Tuning.BmSellerCount * 2, day, rep, rng, value, OrderPrice))
-                Catalog.Add(new BmListing { Seller = n++ % Sellers.Count, Item = g.Item, Kind = g.Kind, Level = g.Level, Price = g.Price, Model = g.Model, FakeOf = g.FakeOf, Health = g.Health });
+            for (int i = 0; i < Sellers.Count; i++) Catalog.AddRange(MerchantGoods(i, Sellers[i], day, rep, rng, value));
             if (RugChance > Tuning.BmRugBase * 3) Forum.Add("rug");
         }
 
+        /// <summary>目录里全部货按订单价算的总值（信用点），用来核对每周周转量。</summary>
+        public double CatalogValue => Catalog.Sum(l => (double)l.Price * l.Qty);
+
         /// <summary>下单：钱包里的币按实付折算扣除，污点与成本按比例留在卖家那边（记在订单上）。成功返回订单。</summary>
-        public BmOrder Place(BmListing l, PayMode mode, Wallet w, string asset, int day, Func<string, double> price)
+        public BmOrder Place(BmListing l, int count, PayMode mode, Wallet w, string asset, int day, Func<string, double> price)
         {
-            if (l == null || asset == Assets.CRC || Closed(day)) return null;
+            if (l == null || count < 1 || count > l.Qty || asset == Assets.CRC || Closed(day)) return null;
             var seller = Sellers[l.Seller];
             if (mode == PayMode.Advance && !seller.Advance) return null;
             double p = price(asset);
             if (p <= 0) return null;
-            int credits = Pay(l.Price, mode);
+            int credits = Pay(OrderTotal(l.Price, count), mode);
             double qty = credits / p;
             if (w.Avail(asset) + 1e-9 < qty) return null;
             double total = w.Value(price);
@@ -137,9 +212,11 @@ namespace Decentralized.Domain
             w.Add(asset, -qty);
             var o = new BmOrder
             {
-                Item = l.Item, Seller = seller.Name, SellerScam = seller.Scam, Mode = mode, Model = l.Model, FakeOf = l.FakeOf, Health = l.Health, Price = credits, Asset = asset, Qty = qty,
-                Taint = taint, Basis = basis, PlacedDay = day, DueDay = day + Tuning.BmDoorDays,
+                Item = l.Item, Seller = seller.Name, SellerScam = seller.Scam, Mode = mode, Count = count, Model = l.Model, FakeOf = l.FakeOf, Health = l.Health, Price = credits, Asset = asset, Qty = qty,
+                Taint = taint, Basis = basis, PlacedDay = day, DueDay = day + seller.Days,
             };
+            l.Qty -= count;
+            if (l.Qty <= 0) Catalog.Remove(l);
             Orders.Add(o);
             if (Honeypot(day)) Traps.Add(new BmTrap { Day = day + Tuning.BmTrapDelay, Amount = credits, Why = "honeypot", Item = l.Item });
             return o;