64 lines
2.9 KiB
C#
64 lines
2.9 KiB
C#
|
using System;
|
||
|
|
using System.Collections.Generic;
|
||
|
|
using System.Linq;
|
||
|
|
|
||
|
|
namespace Decentralized.Domain
|
||
|
|
{
|
||
|
|
/// <summary>二手显卡贩子的类型：老实人按真实价卖；中间商加价；骗子夹带假卡，按标称型号的价卖。</summary>
|
||
|
|
public enum DealerKind { Honest, Middleman, Scammer }
|
||
|
|
|
||
|
|
/// <summary>贩子带来的一张卡：<see cref="MarkupPct"/> 是柜台上相对真实价值的加价百分比（骗子卖假卡时是正的，按标称型号报价再打九折）。</summary>
|
||
|
|
public sealed class UsedCard
|
||
|
|
{
|
||
|
|
public string Model;
|
||
|
|
public string FakeOf;
|
||
|
|
public double Health;
|
||
|
|
public int MarkupPct;
|
||
|
|
}
|
||
|
|
|
||
|
|
public static class UsedDealers
|
||
|
|
{
|
||
|
|
public const double MiddlemanMarkup = 0.08, ScamDiscount = 0.90;
|
||
|
|
public const double FakeShareMiddleman = 0.10, FakeShareScammer = 0.45;
|
||
|
|
|
||
|
|
/// <summary>今天来的贩子的类型：骗子越往后越多。</summary>
|
||
|
|
public static DealerKind Kind(int day, Rng rng)
|
||
|
|
{
|
||
|
|
double scam = Math.Min(0.30, 0.10 + day * 0.004);
|
||
|
|
double r = rng.NextDouble();
|
||
|
|
return r < scam ? DealerKind.Scammer : r < scam + 0.30 ? DealerKind.Middleman : DealerKind.Honest;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>能出现在二手市场上的型号：按天数放开，旗舰第 30 天起。</summary>
|
||
|
|
public static string[] Pool(int day)
|
||
|
|
{
|
||
|
|
var list = new List<string>(Dealer.Basic);
|
||
|
|
if (day >= Dealer.AdvancedFromDay) list.AddRange(Dealer.Advanced);
|
||
|
|
if (day >= Dealer.FlagshipFromDay) list.AddRange(Dealer.Flagship);
|
||
|
|
return list.ToArray();
|
||
|
|
}
|
||
|
|
|
||
|
|
public static List<UsedCard> Cards(DealerKind kind, int day, Rng rng)
|
||
|
|
{
|
||
|
|
var pool = Pool(day);
|
||
|
|
int count = rng.Range(3, 5);
|
||
|
|
var cards = new List<UsedCard>();
|
||
|
|
for (int i = 0; i < count; i++)
|
||
|
|
{
|
||
|
|
double share = kind == DealerKind.Scammer ? FakeShareScammer : kind == DealerKind.Middleman ? FakeShareMiddleman : 0;
|
||
|
|
var label = pool[rng.Range(0, pool.Length - 1)];
|
||
|
|
var card = new UsedCard { Model = label, Health = 25 + rng.NextDouble() * 60 };
|
||
|
|
var cheaper = Hardware.Specs.Values.Where(s => !s.Asic && s.Price * 2 <= Hardware.Specs[label].Price).Select(s => s.Model).ToArray();
|
||
|
|
if (cheaper.Length > 0 && rng.Chance(share))
|
||
|
|
{
|
||
|
|
card.FakeOf = cheaper[rng.Range(0, cheaper.Length - 1)];
|
||
|
|
var u = new Unit { Model = card.Model, FakeOf = card.FakeOf, Health = card.Health };
|
||
|
|
card.MarkupPct = (int)Math.Round((CardValue.Of(label, card.Health) * ScamDiscount / CardValue.True(u) - 1) * 100);
|
||
|
|
}
|
||
|
|
else if (kind == DealerKind.Middleman) card.MarkupPct = (int)Math.Round(MiddlemanMarkup * 100);
|
||
|
|
cards.Add(card);
|
||
|
|
}
|
||
|
|
return cards;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|