第十阶段 stage 2（一）：交易对改为 X/CRC 池，任意币互换经 CRC 两跳路由，币价表改为 CRC 价格

src/Decentralized.Domain/Market.cs

@@ -4,6 +4,14 @@ using System.Linq;
 
 namespace Decentralized.Domain
 {
+    /// <summary>一次互换的报价：得到数量、经过几个池、相对中间价的损失（手续费加滑点）。</summary>
+    public sealed class SwapQuote
+    {
+        public string From, To;
+        public double In, Out, Impact;
+        public int Hops;
+    }
+
     /// <summary>
     /// 影响行情的游戏事件种类。接入层把游戏的新闻事件与派系行动映射到这里（例如全站停电、电力短缺 → Blackout）。
     /// </summary>
@@ -64,14 +72,43 @@ namespace Decentralized.Domain
             var m = new Market();
             double depth = Tuning.PoolDepth(day), p = Tuning.PscStartPrice;
             m.Pools.Add(Pool.Create(Venue.Exchange, Assets.PSC, Assets.CRC, p, depth, Tuning.ExchangeFee));
-            m.Pools.Add(Pool.Create(Venue.Dex, Assets.PSC, Assets.CRT, p, depth * SideDepthShare, Tuning.DexFee));
-            m.Pools.Add(Pool.Create(Venue.Dex, Assets.PSC, Assets.CRA, p, depth * SideDepthShare, Tuning.DexFee));
+            m.Pools.Add(Pool.Create(Venue.Dex, Assets.PSC, Assets.CRC, p, depth * SideDepthShare, Tuning.DexFee));
             m.Pools.Add(Pool.Create(Venue.Dex, Assets.CRT, Assets.CRC, 1, depth * SideDepthShare, Tuning.DexFee));
+            m.Pools.Add(Pool.Create(Venue.Dex, Assets.CRA, Assets.CRC, 1, depth * SideDepthShare, Tuning.DexFee));
+            m.Pools.Add(Pool.Create(Venue.Dex, Assets.SPARK, Assets.CRC, Tuning.SparkStart, depth * Tuning.SparkDepthShare, Tuning.DexFee));
             return m;
         }
 
         public Pool Main => Pools[0];
 
+        /// <summary>DEX 上 X/CRC 的池（所有币都以 CRC 计价）。</summary>
+        public Pool DexPool(string asset) => Find(Venue.Dex, asset, Assets.CRC);
+
+        /// <summary>
+        /// 任意两币互换的报价：CRC 在一端走一个池，否则 X → CRC → Y 两跳（两次手续费、滑点叠加）。
+        /// 不改池子；没有路由（同币、没有池）返回 null。
+        /// </summary>
+        public SwapQuote Quote(string from, string to, double amount)
+        {
+            if (from == to || amount <= 0) return null;
+            var a = from == Assets.CRC ? null : DexPool(from);
+            var b = to == Assets.CRC ? null : DexPool(to);
+            if ((from != Assets.CRC && a == null) || (to != Assets.CRC && b == null)) return null;
+            double crc = a == null ? amount : a.QuoteOut(amount);
+            double mid = a == null ? amount : amount * a.Price;
+            double outAmt = b == null ? crc : b.BaseOut(crc);
+            double ideal = b == null ? mid : mid / b.Price;
+            return new SwapQuote { From = from, To = to, In = amount, Out = outAmt, Hops = (a != null ? 1 : 0) + (b != null ? 1 : 0), Impact = ideal > 0 ? Math.Max(0, 1 - outAmt / ideal) : 0 };
+        }
+
+        /// <summary>成交：按 <see cref="Quote"/> 的路由改动池子，返回得到的数量（没有路由返回 0）。</summary>
+        public double Swap(string from, string to, double amount)
+        {
+            if (Quote(from, to, amount) == null) return 0;
+            double crc = from == Assets.CRC ? amount : DexPool(from).SellBase(amount);
+            return to == Assets.CRC ? crc : DexPool(to).BuyBase(crc);
+        }
+
         public Pool Find(Venue venue, string baseAsset, string quote) =>
             Pools.FirstOrDefault(x => x.Venue == venue && x.Base == baseAsset && x.Quote == quote);
 
@@ -152,7 +189,8 @@ namespace Decentralized.Domain
                 double baseCredits = pool.Base == Assets.PSC ? p : stablePrice(pool.Base);
                 double quoteCredits = pool.Quote == Assets.PSC ? p : stablePrice(pool.Quote);
                 if (quoteCredits <= 0) continue;
-                pool.Revert(baseCredits / quoteCredits, ArbRate, depth * SideDepthShare / quoteCredits);
+                double share = pool.Base == Assets.SPARK ? Tuning.SparkDepthShare : SideDepthShare;
+                pool.Revert(baseCredits / quoteCredits, ArbRate, depth * share / quoteCredits);
             }
         }
     }

src/Decentralized.Domain/Tuning.cs

@@ -97,7 +97,7 @@ namespace Decentralized.Domain
         /// <summary>外观折价（占价值的比例）：叶片积灰 / 缺角，金手指发暗 / 氧化，挡板划痕，封条缺失。</summary>
         public const double CardFanDust = 0.04, CardFanChipped = 0.12, CardFingersDark = 0.04, CardFingersOxidized = 0.12, CardBracketScratch = 0.02, CardSealMissing = 0.06;
         /// <summary>非主交易对每晚被拉回参考价的比例，及其深度占主交易对的比例。</summary>
-        public const double SideArbRate = 0.75, SideDepthShare = 0.3;
+        public const double SideArbRate = 0.75, SideDepthShare = 0.3, SparkDepthShare = 0.15;
         /// <summary>Web3 黑市：开放所需黑市声望，中 / 高档货所需声望，现货每周刷新的天数与基础件数（每高 BmStockPerRep 声望多一件），现货溢价。</summary>
         public const int BmOpenRep = 10, BmMidRep = 40, BmHighRep = 80, BmRefreshDays = 7, BmStockBase = 4;
         public const double BmStockPerRep = 40, BmPremium = 0.30;

src/Decentralized.Domain/TuningTable.cs

@@ -324,6 +324,7 @@ namespace Decentralized.Domain
             ["SentimentVol"] = Tuning.SentimentVol,
             ["SideArbRate"] = Tuning.SideArbRate,
             ["SideDepthShare"] = Tuning.SideDepthShare,
+            ["SparkDepthShare"] = Tuning.SparkDepthShare,
             ["SparkFee"] = Tuning.SparkFee,
             ["SparkMaxMult"] = Tuning.SparkMaxMult,
             ["SparkMinMult"] = Tuning.SparkMinMult,

src/Decentralized/ModFiles/Localization/de.csv

@@ -149,8 +149,6 @@ bank.ops,Ein-/Auszahlung
 poin.account.h,Poinbase-Konto
 trade.h,Handel
 web3.wallet.h,On-Chain-Wallet
-col.peg,Preis
-col.status,Status
 stable.ok,Gekoppelt
 stable.depeg,Entkoppelt
 stable.warn,Warnung: Staking-Subventionspool knapp
@@ -902,3 +900,9 @@ rig.st.power,Verbrauch
 rig.st.hash,Hashrate
 rig.st.kj,{0} kJ/Tag
 lbl.point.model,Modell beanstanden
+col.crcprice,CRC-Preis
+swap.pay,Zahlen
+swap.get,Erhalten
+swap.preview,"Ca. {0} {1}　{2} Pool(s), Verlust {3} %"
+swap.go,Tauschen
+swap.same,Zahlungs- und Empfangswährung müssen verschieden sein.

src/Decentralized/ModFiles/Localization/en.csv

@@ -149,8 +149,6 @@ bank.ops,Deposit / withdraw
 poin.account.h,Poinbase account
 trade.h,Trade
 web3.wallet.h,On-chain wallet
-col.peg,Price
-col.status,Status
 stable.ok,Pegged
 stable.depeg,Depegged
 stable.warn,Warning: staking subsidy pool low
@@ -902,3 +900,9 @@ rig.st.power,Power
 rig.st.hash,Hashrate
 rig.st.kj,{0} kJ/day
 lbl.point.model,Point out model
+col.crcprice,CRC price
+swap.pay,Pay
+swap.get,Receive
+swap.preview,"Receive about {0} {1}　{2} pool(s), loss {3}%"
+swap.go,Swap
+swap.same,Pay and receive must be different coins.

src/Decentralized/ModFiles/Localization/es.csv

@@ -149,8 +149,6 @@ bank.ops,Depósito / retiro
 poin.account.h,Cuenta de Poinbase
 trade.h,Comercio
 web3.wallet.h,Billetera en cadena
-col.peg,Precio
-col.status,Estado
 stable.ok,Anclado
 stable.depeg,Desanclado
 stable.warn,Advertencia: fondo de subsidio de staking bajo
@@ -902,3 +900,9 @@ rig.st.power,Consumo
 rig.st.hash,Tasa de hash
 rig.st.kj,{0} kJ/día
 lbl.point.model,Señalar modelo
+col.crcprice,Precio en CRC
+swap.pay,Pagar
+swap.get,Recibir
+swap.preview,"Aprox. {0} {1}　{2} pool(s), pérdida {3} %"
+swap.go,Canjear
+swap.same,Las monedas a pagar y recibir deben ser distintas.

src/Decentralized/ModFiles/Localization/fr.csv

@@ -149,8 +149,6 @@ bank.ops,Dépôt / Retrait
 poin.account.h,Compte Poinbase
 trade.h,Trading
 web3.wallet.h,Portefeuille on-chain
-col.peg,Prix
-col.status,Statut
 stable.ok,Arrimé
 stable.depeg,Désarrimé
 stable.warn,Attention : pool de subvention de staking au plus bas
@@ -902,3 +900,9 @@ rig.st.power,Conso.
 rig.st.hash,Hachage
 rig.st.kj,{0} kJ/j
 lbl.point.model,Signaler le modèle
+col.crcprice,Prix en CRC
+swap.pay,Payer
+swap.get,Recevoir
+swap.preview,"Environ {0} {1}　{2} pool(s), perte {3} %"
+swap.go,Échanger
+swap.same,Les monnaies payée et reçue doivent différer.

src/Decentralized/ModFiles/Localization/ja.csv

@@ -149,8 +149,6 @@ bank.ops,入出金
 poin.account.h,Poinbase口座
 trade.h,取引
 web3.wallet.h,オンチェーンウォレット
-col.peg,価格
-col.status,状態
 stable.ok,ペグ正常
 stable.depeg,デペグ
 stable.warn,警告：ステーキング補助金プール残高低下
@@ -902,3 +900,9 @@ rig.st.power,消費電力
 rig.st.hash,ハッシュレート
 rig.st.kj,{0} kJ/日
 lbl.point.model,型番を指摘する
+col.crcprice,CRC 価格
+swap.pay,支払い
+swap.get,受取
+swap.preview,約 {0} {1}　プール {2} 個、損失 {3}%
+swap.go,スワップ
+swap.same,支払いと受取は別の通貨にしてください。

src/Decentralized/ModFiles/Localization/pl.csv

@@ -149,8 +149,6 @@ bank.ops,Wpłata / wypłata
 poin.account.h,Konto Poinbase
 trade.h,Handel
 web3.wallet.h,Portfel on-chain
-col.peg,Cena
-col.status,Status
 stable.ok,W parytecie
 stable.depeg,Utrata parytetu
 stable.warn,Ostrzeżenie: niska pula dotacji stakingu
@@ -902,3 +900,9 @@ rig.st.power,Pobór
 rig.st.hash,Moc obl.
 rig.st.kj,{0} kJ/dzień
 lbl.point.model,Wskaż model
+col.crcprice,Cena w CRC
+swap.pay,Płacę
+swap.get,Otrzymuję
+swap.preview,"Około {0} {1}　pule: {2}, strata {3}%"
+swap.go,Wymień
+swap.same,Waluty płatności i odbioru muszą się różnić.

src/Decentralized/ModFiles/Localization/ru.csv

@@ -149,8 +149,6 @@ bank.ops,Депозит / вывод
 poin.account.h,Счёт Poinbase
 trade.h,Торговля
 web3.wallet.h,Ончейн-кошелёк
-col.peg,Цена
-col.status,Статус
 stable.ok,Привязан
 stable.depeg,Отвязан
 stable.warn,Внимание: пул субсидий стейкинга на исходе
@@ -902,3 +900,9 @@ rig.st.power,Расход
 rig.st.hash,Хешрейт
 rig.st.kj,{0} кДж/день
 lbl.point.model,Указать модель
+col.crcprice,Цена в CRC
+swap.pay,Отдаю
+swap.get,Получаю
+swap.preview,"Около {0} {1}　пулов: {2}, потери {3}%"
+swap.go,Обменять
+swap.same,Монеты оплаты и получения должны различаться.

src/Decentralized/ModFiles/Localization/zh.csv

@@ -148,8 +148,6 @@ bank.ops,"存取"
 poin.account.h,"Poinbase 账户"
 trade.h,"交易"
 web3.wallet.h,"链上钱包"
-col.peg,"价格"
-col.status,"状态"
 stable.ok,"锚定正常"
 stable.depeg,"脱锚"
 stable.warn,"预兆：质押补贴池告急"
@@ -901,3 +899,9 @@ rig.st.power,耗电
 rig.st.hash,算力
 rig.st.kj,{0} kJ/天
 lbl.point.model,指出型号
+col.crcprice,CRC 价格
+swap.pay,支付
+swap.get,获得
+swap.preview,约得 {0} {1}　经 {2} 个池，损耗 {3}%
+swap.go,兑换
+swap.same,支付和获得的币种不能相同。

src/Decentralized/Session.cs

@@ -136,7 +136,8 @@ namespace Decentralized
             }
             catch (Exception ex) { Log.Error($"读取存档数据失败，重新开始：{ex.Message}"); }
             if (Data == null) Data = new SaveData();
-            if (Data.Market == null) Data.Market = Market.CreateDefault(StoreStation.GetDayCounter());
+            // 池子表在第十阶段改过（全部以 CRC 计价）；旧测试档里的表缺池子，重建成默认值（价格从起始价重来）
+            if (Data.Market == null || Data.Market.DexPool(Assets.SPARK) == null) Data.Market = Market.CreateDefault(StoreStation.GetDayCounter());
             // 旧存档里的商家地址没有校验位：换成合法地址
             foreach (var s in Data.Black.Sellers) if (!ChainAddress.Valid(s.Name)) s.Name = ChainAddress.Make(Data.Rng.NextUInt());
             if (Data.Story == null) Data.Story = new StoryMods();

src/Decentralized/TerminalWindow.cs

@@ -231,9 +231,6 @@ namespace Decentralized
             b.AddLabel(L.T("aml.taint", (int)Math.Round(taintRatio * 100)), taintRatio > 0.05 ? "aml_note" : "aml_dim");
         }
 
-        private static readonly float[] StableWBase = new[] { 80f, 100f, 220f };
-        private static float[] StableW => Sc(StableWBase);
-
         private static string StableStatus(Stablecoins st, string asset, int day)
         {
             double p = st.Price(asset);
@@ -242,15 +239,78 @@ namespace Decentralized
             return p < 0.99 ? L.T("stable.depeg") : L.T("stable.ok");
         }
 
-        /// <summary>稳定币行情：价格与状态（脱锚、预兆）。</summary>
-        private static void StableTable(CustomUIBuilder b)
+        private static readonly float[] PriceWBase = new[] { 100f, 160f };
+        private static float[] PriceW => Sc(PriceWBase);
+        private static readonly string[] SwapCoins = { Assets.PSC, Assets.CRC, Assets.CRT, Assets.CRA, Assets.SPARK };
+        private static string _swapFrom = Assets.CRC, _swapTo = Assets.PSC;
+
+        /// <summary>币价表：各币在 DEX 池里以 CRC 计的价格。</summary>
+        private static void PriceTable(CustomUIBuilder b)
         {
-            var st = Session.Data.Stable;
-            int day = StoreStation.GetDayCounter();
+            var m = Session.Data.Market;
             b.AddSeparator();
-            TableHeader(b, StableW, L.T("col.asset"), L.T("col.peg"), L.T("col.status"));
-            foreach (var a in new[] { Assets.CRC, Assets.CRT, Assets.CRA })
-                TableRow(b, StableW, a, Fmt.Num(st.Price(a)), StableStatus(st, a, day));
+            TableHeader(b, PriceW, L.T("col.asset"), L.T("col.crcprice"));
+            foreach (var a in SwapCoins.Where(x => x != Assets.CRC))
+                TableRow(b, PriceW, a, Fmt.Num(m.DexPool(a).Price));
+        }
+
+        /// <summary>互换：任意币对任意币，实际经 CRC 路由；预览显示得到数量、经过几个池、损耗。</summary>
+        private static void SwapBlock(CustomUIBuilder b)
+        {
+            var m = Session.Data.Market;
+            Action<string, string, bool> picker = (label, cur, from) =>
+            {
+                b.AddLabel(label);
+                b.BeginRow(4f);
+                foreach (var c in SwapCoins)
+                {
+                    var coin = c;
+                    PledgerSkin.Pick(b, coin, coin == cur, () =>
+                    {
+                        if (from) { _swapFrom = coin; if (_swapTo == coin) _swapTo = SwapCoins.First(x => x != coin); }
+                        else { _swapTo = coin; if (_swapFrom == coin) _swapFrom = SwapCoins.First(x => x != coin); }
+                        Open();
+                    }, _picked);
+                }
+                b.End();
+            };
+            AmountRow(b);
+            picker(L.T("swap.pay"), _swapFrom, true);
+            picker(L.T("swap.get"), _swapTo, false);
+            double v;
+            bool ok = double.TryParse((_amount ?? "").Trim(), NumberStyles.Float, CultureInfo.InvariantCulture, out v) && v > 0;
+            var q = ok ? m.Quote(_swapFrom, _swapTo, v) : null;
+            if (q != null) b.AddLabel(L.T("swap.preview", Fmt.Num(q.Out), _swapTo, q.Hops, (q.Impact * 100).ToString("0.0", CultureInfo.InvariantCulture)), "swap_preview_dim");
+            b.AddButton(L.T("swap.go"), () => Swap());
+        }
+
+        /// <summary>互换：DEX 是合约调用，要在硬件钱包上签名。</summary>
+        private static void Swap()
+        {
+            if (!ReadAmount(out double v)) return;
+            string from = _swapFrom, to = _swapTo;
+            var q = Session.Data.Market.Quote(from, to, v);
+            if (q == null) { _message = L.T("swap.same"); Open(); return; }
+            var w = Session.Data.Hot;
+            if (w.Avail(from) + 1e-9 < v) { _message = L.T(frozenPay(w, from) ? "msg.frozen" : "msg.balance"); Open(); return; }
+            _message = L.T("hw.wait");
+            Open();
+            WalletWindow.OpenForBill(new WalletWindow.Bill { Contract = true, Asset = from, Amount = v, Summary = L.T("hw.swap", Fmt.Num(v), from, Fmt.Num(q.Out), to), Execute = pw => DoSwap(from, to, v, pw) });
+        }
+
+        private static void DoSwap(string from, string to, double v, Wallet w)
+        {
+            if (w.Avail(from) + 1e-9 < v) { _message = L.T(frozenPay(w, from) ? "msg.frozen" : "msg.balance"); Open(); return; }
+            double got = Session.Data.Market.Swap(from, to, v);
+            if (got <= 0) { _message = L.T("swap.same"); Open(); return; }
+            double spent = v * Session.Price(from);
+            CandleChart.Trade(from, spent); CandleChart.Trade(to, spent);
+            w.Add(from, -v);
+            w.Add(to, got);
+            w.RecordBuy(to, got, spent);
+            _message = L.T("msg.trade", Fmt.Num(v), from, Fmt.Num(got), to);
+            Session.Save();
+            Open();
         }
 
         private static void TradeRows(CustomUIBuilder b, Venue venue)
@@ -1193,14 +1253,13 @@ namespace Decentralized
                 l.AddSeparator();
                 l.AddLabel(L.T("wallet.total", Fmt.Credits(w.Value(Session.Price))));
                 if (w.Taint > 0.5) l.AddLabel(L.T("wallet.taint", Fmt.Credits(w.Taint)), "taint_note");
-                StableTable(l);
+                PriceTable(l);
                 l.AddSeparator();
                 CandleChart.AddPicker(l, "web3", Assets.PSC, Open, _picked);
             }, r =>
             {
                 r.AddHeader(L.T("trade.h"));
-                AmountRow(r);
-                TradeRows(r, Venue.Dex);
+                SwapBlock(r);
                 if (Unlock.BlackUnlocked && BlackMarket.DeskOpen(StoreReputation.GetBMReputation())) PoneroBlock(r);
             });
         }
@@ -2311,18 +2370,14 @@ namespace Decentralized
             Open();
         }
 
-        /// <summary>交易：Poinbase 是托管账户，直接成交；DEX 是合约调用，要在硬件钱包上签名。</summary>
+        /// <summary>交易：Poinbase 是托管账户，直接成交。</summary>
         private static void Trade(Pool p, bool buy)
         {
             if (!ReadAmount(out double v)) return;
-            var w = p.Venue == Venue.Dex ? Session.Data.Hot : Session.Data.Poinbase;
-            string pay = buy ? p.Quote : p.Base, get = buy ? p.Base : p.Quote;
+            var w = Session.Data.Poinbase;
+            string pay = buy ? p.Quote : p.Base;
             if (w.Avail(pay) + 1e-9 < v) { _message = L.T(frozenPay(w, pay) ? "msg.frozen" : "msg.balance"); Open(); return; }
-            if (p.Venue != Venue.Dex) { DoTrade(p, buy, v, w); return; }
-            double quote = buy ? v / p.Price : v * p.Price;
-            _message = L.T("hw.wait");
-            Open();
-            WalletWindow.OpenForBill(new WalletWindow.Bill { Contract = true, Asset = pay, Amount = v, Summary = L.T("hw.swap", Fmt.Num(v), pay, Fmt.Num(quote), get), Execute = pw => DoTrade(p, buy, v, pw) });
+            DoTrade(p, buy, v, w);
         }
 
         private static void DoTrade(Pool p, bool buy, double v, Wallet w)

tests/Decentralized.Domain.Tests/Program.cs

@@ -318,17 +318,38 @@ internal static class Program
             Check(n.Anchor(new MarketEvent[0]) > Tuning.PscStartPrice * 1.05, "锚随之上移");
         });
 
-        Test("市场：其他交易对每晚被套利拉向参考价，三角价差收敛", () =>
+        Test("市场：其他交易对每晚被套利拉向参考价，价差收敛", () =>
         {
             var m = Market.CreateDefault(1);
-            var crt = m.Find(Venue.Dex, Assets.PSC, Assets.CRT);
-            crt.SetPrice(130, crt.QuoteReserve);
+            var dexPsc = m.DexPool(Assets.PSC);
+            dexPsc.SetPrice(130, dexPsc.QuoteReserve);
             for (int d = 1; d <= 5; d++) m.Night(new MarketEvent[0], new Rng((ulong)d), 1, a => 1);
-            double gap = Math.Abs(crt.Price / m.Price - 1);
-            Check(gap < 0.03, $"五晚后 PSC/CRT 与参考价相差 {gap:P1}");
-            var crtCrc = m.Find(Venue.Dex, Assets.CRT, Assets.CRC);
+            double gap = Math.Abs(dexPsc.Price / m.Price - 1);
+            Check(gap < 0.03, $"五晚后 DEX 的 PSC/CRC 与参考价相差 {gap:P1}");
+            var crtCrc = m.DexPool(Assets.CRT);
             m.Night(new MarketEvent[0], new Rng(9), 1, a => a == Assets.CRT ? 0.9 : 1);
             Check(crtCrc.Price < 0.98, $"CRT 脱锚时 CRT/CRC 向 0.9 靠拢：{crtCrc.Price:0.000}");
+            var m2 = Market.CreateDefault(1);
+            var spark = m2.DexPool(Assets.SPARK);
+            m2.Night(new MarketEvent[0], new Rng(11), 1, a => a == Assets.SPARK ? 20 : 1);
+            Check(spark.Price > Tuning.SparkStart * 1.3, $"SPARK/CRC 向 SPARK 价格靠拢：{spark.Price:0.00}");
+        });
+
+        Test("市场：任意两币互换经 CRC 路由，两跳付两次手续费", () =>
+        {
+            var m = Market.CreateDefault(1);
+            var oneHop = m.Quote(Assets.CRC, Assets.PSC, 100);
+            var twoHop = m.Quote(Assets.CRA, Assets.PSC, 100);
+            Check(oneHop != null && oneHop.Hops == 1 && twoHop != null && twoHop.Hops == 2, "CRC 在一端走一个池，否则两个池");
+            Check(m.Quote(Assets.PSC, Assets.PSC, 1) == null && m.Quote(Assets.CRC, Assets.CRC, 1) == null && m.Quote(Assets.CRC, Assets.Ponero, 1) == null, "同币、没有池没有路由");
+            Check(twoHop.Impact > oneHop.Impact && twoHop.Impact > Tuning.DexFee * 1.9, $"两跳损失更大：{oneHop.Impact:P2} 对 {twoHop.Impact:P2}");
+            double expect = m.DexPool(Assets.PSC).BaseOut(m.DexPool(Assets.CRA).QuoteOut(100));
+            Check(Near(twoHop.Out, expect, 1e-9), "两跳的数量 = 先卖成 CRC 再买");
+            double got = m.Swap(Assets.CRA, Assets.PSC, 100);
+            Check(Near(got, twoHop.Out, 1e-9), "成交数量与报价一致");
+            Check(m.DexPool(Assets.CRA).Price < 1 && m.DexPool(Assets.PSC).Price > Tuning.PscStartPrice, "成交推动两个池的价格");
+            var big = Market.CreateDefault(1).Quote(Assets.CRC, Assets.SPARK, 20000);
+            Check(big.Impact > 0.2, $"SPARK 池比较薄，大单滑点大：{big.Impact:P0}");
         });
 
         Test("稳定币：CRC 脱锚与减记，CRT 脱锚与冻结概率", () =>