119 lines
6.8 KiB
C#
119 lines
6.8 KiB
C#
using System;
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namespace Decentralized.Domain
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{
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/// <summary>
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/// 显卡的外观：5 个维度，每个 3 种取值，共 243 种组合。前三个画在正面，后两个画在背面（右键"切换"翻面）。
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/// 老化类的维度（风扇、金手指、挡板划痕）随健康度出现，真卡也会有；破绽类的取值只会出现在假卡上，
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/// 玩家要结合名字（标称型号）与背面的丝印、序列号贴纸判断。
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/// </summary>
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public struct CardLook
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{
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/// <summary>风扇：0 干净，1 积灰，2 叶片缺角（老化）。</summary>
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public int Fan;
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/// <summary>金手指：0 光亮，1 发暗，2 氧化发绿（老化）。</summary>
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public int Fingers;
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/// <summary>挡板：0 完好，1 划痕（老化）。</summary>
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public int Bracket;
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/// <summary>背面丝印：0 与标称型号一致，1 印的是真实芯片的型号（假卡），2 重新印过、字歪（假卡）。</summary>
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public int Print;
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/// <summary>封条：0 完好，2 缺失（开过封的旧卡或翻新卡）。</summary>
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public int Sticker;
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/// <summary>序列号：0 合规（格式对、工厂码在合法范围、档次码与型号一致），1 不合规（工厂码不在合法范围或位数不对，贴纸是后补的），
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/// 2 档次码与标称型号不符（贴的是原芯片的序列号）。后两种只出现在假卡上。</summary>
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public int Serial;
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public const int Variants = 3;
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/// <summary>每张卡自己的随机种子：老化类维度（风扇、金手指、挡板划痕）由它和当前健康度决定，每晚损耗后重新算，
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/// 所以越旧的卡看着越旧。为 0 时表示外观是写死的（测试用）。</summary>
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public uint Seed;
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private static double U(uint seed, int salt)
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{
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uint x = seed * 2654435761u + (uint)salt * 40503u + 12345u;
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x ^= x >> 15; x *= 2246822519u; x ^= x >> 13; x *= 3266489917u; x ^= x >> 16;
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return (x >> 8) * (1.0 / (1 << 24));
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}
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/// <summary>按当前健康度重新算出的外观：磨损度 = 1 − 健康度 / 100，再加上这张卡自己的偏差（±0.15）。
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/// 风扇磨损 ≥ 0.25 积灰、≥ 0.55 缺角；金手指 ≥ 0.30 发暗、≥ 0.60 氧化；挡板磨损 ≥ 0.45 出划痕（接口数不对是假卡的固定特征，不变）。</summary>
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public CardLook Appearance(double health)
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{
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if (Seed == 0) return this;
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double worn = 1 - Math.Max(0, Math.Min(100, health)) / 100.0;
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var l = this;
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double fan = worn + (U(Seed, 1) - 0.5) * 0.3, fin = worn + (U(Seed, 2) - 0.5) * 0.3, brk = worn + (U(Seed, 3) - 0.5) * 0.3;
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l.Fan = fan >= 0.55 ? 2 : fan >= 0.25 ? 1 : 0;
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l.Fingers = fin >= 0.60 ? 2 : fin >= 0.30 ? 1 : 0;
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l.Bracket = brk >= 0.45 ? 1 : 0;
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return l;
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}
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private static readonly double[] FanHash = { 1.00, 0.97, 0.92 }, FingerHash = { 1.00, 0.98, 0.94 };
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/// <summary>算力倍数：风扇积灰 ×0.97、缺角 ×0.92（降频）；金手指发暗 ×0.98、氧化 ×0.94（接触不良掉速）。</summary>
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public double HashFactor => FanHash[Fan] * FingerHash[Fingers];
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/// <summary>六位数字，存在物品标签上：风扇、金手指、挡板、丝印、封条、序列号。</summary>
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public string Encode() => $"{Fan}{Fingers}{Bracket}{Print}{Sticker}{Serial}";
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public static CardLook Decode(string s)
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{
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if (s == null || (s.Length != 5 && s.Length != 6)) return default;
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int D(int i) => Math.Max(0, Math.Min(Variants - 1, s[i] - '0'));
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return new CardLook { Fan = D(0), Fingers = D(1), Bracket = D(2), Print = D(3), Sticker = D(4), Serial = s.Length > 5 ? D(5) : 0 };
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}
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// 外观维度对应卡的真实状态：损耗、暴毙概率随之变化，价值走标签（见 CardLabels）
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private static readonly double[] FanWear = { 1.00, 1.10, 1.30 }, FanDeath = { 1.00, 1.00, 1.20 };
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private static readonly double[] FingerDeath = { 1.00, 1.10, 1.30 };
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/// <summary>每晚损耗倍数：风扇积灰散热差 ×1.1，缺角 ×1.3。</summary>
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public double WearFactor => FanWear[Fan];
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/// <summary>暴毙概率倍数：风扇缺角 ×1.2；金手指发暗 ×1.1、氧化 ×1.3（接触不良）。</summary>
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public double DeathFactor => FanDeath[Fan] * FingerDeath[Fingers];
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/// <summary>只在假卡上出现的取值：玩家一旦看到，就能肯定是假的。</summary>
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public bool HasFakeSign => Print != 0 || Serial != 0;
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/// <summary>
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/// 生成外观。真卡：老化维度按健康度出现，封条缺失在二手卡上很常见，不会出现破绽类取值。
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/// 假卡：在三类破绽（接口数、丝印、手写序列号）里随机挑 1–3 处，再叠加老化与封条缺失。
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/// </summary>
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public static CardLook Generate(Rng rng, double health, bool fake)
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{
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var look = new CardLook { Seed = rng.NextUInt() | 1, Sticker = rng.Chance(fake ? 0.35 : 0.15 + 0.30 * (1 - Math.Max(0, Math.Min(100, health)) / 100.0)) ? 2 : 0 };
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if (fake)
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{
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// 假卡本身就带着实物上的破绽（低档次的板子：供电口和风扇数对不上），此外骗子还可能重印丝印、补贴序列号
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if (rng.Chance(0.55)) look.Print = rng.Chance(0.6) ? 1 : 2;
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if (rng.Chance(0.65)) look.Serial = rng.Chance(0.55) ? 2 : 1;
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}
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return look.Appearance(health);
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}
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}
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/// <summary>
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/// 显卡的统一价值函数：实际售价和鉴定公会的"正确价值"是同一个数。按真实芯片和健康度算；
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/// 假卡的标称价（贩子报的价）用标称型号算，二者之差就是被坑的钱。
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/// </summary>
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public static class CardValue
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{
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/// <summary>价值 = 型号定价 × 健康度系数。健康 100 时满价，健康 0 时只剩 25%。</summary>
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public static long Of(string model, double health)
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{
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var spec = Hardware.Specs[model];
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double f = 0.25 + 0.75 * Math.Max(0, Math.Min(100, health)) / 100.0;
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return Math.Max(1, (long)Math.Round(spec.Price * f));
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}
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/// <summary>真实价值：全部标签都按真实情况算。</summary>
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public static long True(Unit u) => CardLabels.Value(u, null, 0);
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/// <summary>标称价：贩子报的价，按标称型号算；二手卡也折旧，但只按贩子"自称"的健康度。</summary>
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public static long Quoted(Unit u, double claimedHealth) => Of(u.Model, claimedHealth);
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}
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}
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