probably-decentralized/src/Decentralized/UsedDealerClient.cs

using System.Collections.Generic;
using Decentralized.Domain;

namespace Decentralized
{
    /// <summary>
    /// 二手显卡贩子：偶尔上门，把几张卡摆上柜台，玩家按外观自己判断（翻面看背面）。
    /// 老实人按真实价值卖，中间商加价，骗子夹带假卡并按标称型号报价；价格是柜台上的临时加价，买下之后卡只值真实价值。
    /// 另外把显卡登记为鉴定公会的鉴定物品，正确价值与实际售价是同一个数。
    /// </summary>
    public static class UsedDealerClient
    {
        public const string Appraisal = "pd_gpu_appraisal";
        private const double VisitChance = 0.05;
        private static int lastVisitDay = -1;

        public static void Subscribe()
        {
            ModHook.OnGenerateCustomerNormal += OnGenerate;
            ModHelper.AddAppraisalItem(ModInfo.Id, Appraisal, Items.GpuId("RZX50"), 2, CreateForAppraisal, u => (int)CardValue.True(Items.ToUnit(u)),
                Items.IsGpu, null, () => L.T("appraisal.gpu"));
            ModHelper.AddDebugFunction(ModInfo.Id, ModInfo.Name, "Used dealer visit (test)", () => PlayerStore.Instance.storeClientManager?.AddClient(Create(DealerKind.Scammer)));
        }

        public static void Unsubscribe()
        {
            ModHook.OnGenerateCustomerNormal -= OnGenerate;
            ModHelper.RemoveAppraisalItems(ModInfo.Id);
        }

        private static void OnGenerate(StoreClientManager manager)
        {
            if (Session.Data == null || !Unlock.IsUnlocked) return;
            Log.Guard("二手贩子", () =>
            {
                int day = StoreStation.GetDayCounter();
                if (day < 3 || day == lastVisitDay || !Session.Data.Rng.Chance(VisitChance)) return;
                lastVisitDay = day;
                manager.AddClient(Create(UsedDealers.Kind(day, Session.Data.Rng)));
            });
        }

        /// <summary>鉴定公会送来的卡：一成是假卡；默认估价是按标称型号算的价。</summary>
        private static GameItem CreateForAppraisal()
        {
            var rng = Session.Data?.Rng ?? new Rng(1);
            int day = StoreStation.GetDayCounter();
            var cards = UsedDealers.Cards(DealerKind.Middleman, day, rng);
            var c = cards[0];
            var item = Items.NewCard(c.Model, c.Health, c.FakeOf, rng);
            AppraisalHelper.InitAppraisalItem(item, (int)CardValue.Of(c.Model, c.Health));
            return item;
        }

        private static StoreClient Create(DealerKind kind)
        {
            int day = StoreStation.GetDayCounter();
            var rng = Session.Data.Rng;
            var cards = UsedDealers.Cards(kind, day, rng);
            var client = new StoreClient
            {
                identifier = "pd_used_dealer",
                displayName = L.T("dealer.name"),
                spriteName = SpriteDict.GetRandomScavSpriteName(),
                clientIntent = StoreClient.ClientIntent.SELL,
            };
            StoreClientFactionSetup.InitScav(client);
            client.mainDialogue.SetText(client.displayName, L.T("dealer.line1." + rng.Range(1, 3))).NextDialogue().SetText(client.displayName, L.T("dealer.line2." + rng.Range(1, 3)))
                .SetEndAction(() => Log.Guard("二手贩子上货", () =>
                {
                    NegociationUIManager.Instance.OpenUI();
                    var placed = new List<string>();
                    foreach (var c in cards)
                    {
                        var item = Items.NewCard(c.Model, c.Health, c.FakeOf, rng);
                        if (c.MarkupPct != 0) item.AddItemFeature(Markup(c.MarkupPct));
                        PlayerStore.Instance.AddDirectSellingItemToTable(item);
                        placed.Add($"{c.Model}{(c.FakeOf != null ? "←" + c.FakeOf : "")} {c.Health:0}% {c.MarkupPct:+0;-0}%");
                    }
                    Log.Info($"二手贩子（{kind}）：{string.Join("，", placed)}");
                }));
            client.AddBasicDialog();
            client.CompleteClientCreation();
            return client;
        }

        /// <summary>柜台上的临时加价：离开贩子之后自动去掉（游戏按客户临时特征处理）。</summary>
        private static ItemFeature Markup(int pct)
        {
            var f = new ItemFeature(ItemFeature.FeatureType.ClientTemporary) { identifier = "pd_used_markup", category = "markup", valueStage = ItemFeature.ValueStage.Market };
            string text = L.T("dealer.markup");
            f.SetPublicDisplay(text);
            f.SetActualDisplay(text);
            f.isFeatureMatch = true;
            f.SetPreExposedValueMod(pct);
            return f;
        }
    }
}