Stage 4: Web3 black market spot counter and Ponero desk
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace Decentralized.Domain
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{
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/// <summary>黑市现货柜台上的一件货：游戏物品 id、剩余件数、含溢价的单价（信用点）。</summary>
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public sealed class BmOffer
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{
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public string Item;
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public int Qty;
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public int Price;
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public int Level;
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}
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/// <summary>
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/// Web3 黑市：黑市派系在链上的实体。现货柜台每周刷新一批违禁品（档次随黑市声望放开），只收币，脏币也收，
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/// 付出去的币连同按比例的污点一起留在卖家那边；Ponero 兑换处把任意币兑成无法追踪的 Ponero（污点留在原地），有每日额度和手续费。
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/// 镇压期间整个平台下线。
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/// </summary>
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public sealed class BlackMarket
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{
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public List<BmOffer> Offers = new List<BmOffer>();
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public int RefreshedDay = -999;
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/// <summary>Ponero 兑换处当天已兑换的价值（信用点）及其日期。</summary>
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public double DeskToday;
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public int DeskDay = -1;
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/// <summary>现货池：游戏物品 id 与违禁等级（1 低、2 中、3 高）。全部来自游戏已有的违禁品。</summary>
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public static readonly KeyValuePair<string, int>[] Pool =
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{
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P("small_pistol_ammo", 1), P("heavy_pistol_ammo", 1), P("handmade_pistol", 1), P("printed_gun", 1), P("stun_baton", 1),
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P("dream_cap_seed", 1), P("eng_keycard", 1), P("med_keycard", 1), P("ser_keycard", 1), P("sup_keycard", 1),
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P("crypto_module_ser", 1), P("crypto_module_sup", 1),
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P("revolver", 2), P("heavy_handmade_pistol", 2), P("small_pistol_ammo_p", 2), P("heavy_pistol_ammo_p", 2),
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P("flashbang_grenade", 2), P("smoke_grenade", 2), P("dream_dust", 2), P("restricted_chemical", 2),
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P("sci_keycard", 2), P("sec_keycard", 2), P("crypto_module_eng", 2), P("crypto_module_med", 2), P("unlicensed_phagimycin_pill", 2),
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P("shotgun", 3), P("smg", 3), P("c4", 3), P("fanta_pill", 3), P("nightmare_dust", 3), P("cmd_keycard", 3), P("crypto_module_sec", 3),
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};
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private static KeyValuePair<string, int> P(string id, int level) => new KeyValuePair<string, int>(id, level);
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public static bool Open(int rep) => rep >= Tuning.BmOpenRep;
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public static int MaxLevel(int rep) => rep >= Tuning.BmHighRep ? 3 : rep >= Tuning.BmMidRep ? 2 : rep >= Tuning.BmOpenRep ? 1 : 0;
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public static bool DeskOpen(int rep) => rep >= Tuning.PoneroOpenRep;
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public static int StockCount(int rep) => Tuning.BmStockBase + (int)Math.Max(0, rep / Tuning.BmStockPerRep);
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/// <summary>溢价后的单价（信用点）。</summary>
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public static int PriceOf(long baseValue) => (int)Math.Max(1, Math.Round(baseValue * (1 + Tuning.BmPremium)));
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/// <summary>每周刷新一次（或首次开放时）：按声望开放的档次抽 StockCount 种货，每种 1–3 件。value 给出物品的游戏基础价。</summary>
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public bool Refresh(int day, int rep, Rng rng, Func<string, long> value)
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{
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if (!Open(rep) || day - RefreshedDay < Tuning.BmRefreshDays) return false;
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RefreshedDay = day;
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Offers.Clear();
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var pool = Pool.Where(x => x.Value <= MaxLevel(rep)).ToList();
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int n = Math.Min(StockCount(rep), pool.Count);
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for (int i = 0; i < n; i++)
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{
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int k = rng.Range(0, pool.Count - 1);
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var pick = pool[k];
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pool.RemoveAt(k);
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long v = value(pick.Key);
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if (v <= 0) continue;
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Offers.Add(new BmOffer { Item = pick.Key, Level = pick.Value, Qty = pick.Value == 3 ? 1 : rng.Range(1, 3), Price = PriceOf(v) });
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}
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return true;
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}
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/// <summary>买一件：付 asset 币。钱包里按价值比例带走的污点和成本留在卖家那边。成功返回 true，库存减一。</summary>
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public bool Buy(BmOffer o, Wallet w, string asset, Func<string, double> price)
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{
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if (o == null || o.Qty <= 0 || asset == Assets.CRC) return false;
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double p = price(asset);
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if (p <= 0) return false;
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double qty = o.Price / p;
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if (w.Avail(asset) + 1e-9 < qty) return false;
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double total = w.Value(price);
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double share = total > 0 ? Math.Min(1, o.Price / total) : 0;
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w.Taint -= w.Taint * share;
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w.Basis -= w.Basis * share;
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w.Add(asset, -qty);
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o.Qty--;
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if (o.Qty <= 0) Offers.Remove(o);
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return true;
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}
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/// <summary>Ponero 对信用点的价格：跟随 PSC。</summary>
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public static double PoneroPrice(double pscPrice) => pscPrice * Tuning.PoneroPscRatio;
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public double DeskLeft(int day) => Math.Max(0, Tuning.PoneroDailyCap - (DeskDay == day ? DeskToday : 0));
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/// <summary>兑入 Ponero：from 币 amount 个，扣手续费后按 Ponero 价到账；这部分价值带的污点留在原地（不跟着 Ponero）。返回到账数量，额度或余额不足返回 -1。</summary>
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public double ToPonero(Wallet w, string from, double amount, int day, Func<string, double> price)
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{
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double value = amount * price(from);
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if (from == Assets.Ponero || amount <= 0 || value <= 0 || w.Avail(from) + 1e-9 < amount || value > DeskLeft(day) + 1e-9) return -1;
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double total = w.Value(price);
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double share = total > 0 ? Math.Min(1, value / total) : 0;
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w.Taint -= w.Taint * share;
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w.Add(from, -amount);
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double got = value * (1 - Tuning.PoneroFee) / price(Assets.Ponero);
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w.Add(Assets.Ponero, got);
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w.RecordBuy(Assets.Ponero, got, value);
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Spend(day, value);
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return got;
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}
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/// <summary>Ponero 兑出成 to 币：手续费同上，计入当天额度。返回到账数量，不足返回 -1。</summary>
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public double FromPonero(Wallet w, string to, double amount, int day, Func<string, double> price)
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{
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double value = amount * price(Assets.Ponero);
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if (to == Assets.Ponero || amount <= 0 || value <= 0 || w.Avail(Assets.Ponero) + 1e-9 < amount || value > DeskLeft(day) + 1e-9 || price(to) <= 0) return -1;
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w.Add(Assets.Ponero, -amount);
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double got = value * (1 - Tuning.PoneroFee) / price(to);
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w.Add(to, got);
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w.RecordBuy(to, got, value);
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Spend(day, value);
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return got;
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}
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private void Spend(int day, double value)
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{
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if (DeskDay != day) { DeskDay = day; DeskToday = 0; }
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DeskToday += value;
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}
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}
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}
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