mirror of
https://github.com/kwsch/PKHeX
synced 2024-12-16 15:42:40 +00:00
293 lines
10 KiB
C#
293 lines
10 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using PKHeX.Core.Searching;
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using static PKHeX.Core.CheckIdentifier;
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namespace PKHeX.Core
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{
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public sealed class BulkAnalysis
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{
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public readonly IReadOnlyList<PKM> AllData;
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public readonly IReadOnlyList<LegalityAnalysis> AllAnalysis;
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public readonly ITrainerInfo Trainer;
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public readonly List<CheckResult> Parse = new List<CheckResult>();
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public readonly bool Valid;
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private readonly bool[] CloneFlags;
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public BulkAnalysis(SaveFile sav)
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{
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Trainer = sav;
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AllData = sav.GetAllPKM();
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AllAnalysis = GetIndividualAnalysis(AllData);
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CloneFlags = new bool[AllData.Count];
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Valid = ScanAll();
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}
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public BulkAnalysis(ITrainerInfo tr, IEnumerable<PKM> pkms)
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{
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Trainer = tr;
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AllData = pkms is IReadOnlyList<PKM> pk ? pk : pkms.ToList();
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AllAnalysis = GetIndividualAnalysis(AllData);
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CloneFlags = new bool[AllData.Count];
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Valid = ScanAll();
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}
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private bool ScanAll()
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{
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CheckClones();
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if (Trainer.Generation <= 2)
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return Parse.All(z => z.Valid);
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CheckIDReuse();
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CheckPIDReuse();
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if (Trainer.Generation >= 6)
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CheckECReuse();
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CheckDuplicateOwnedGifts();
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return Parse.All(z => z.Valid);
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}
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private void AddLine(PKM first, PKM second, string msg, CheckIdentifier i, Severity s = Severity.Invalid)
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{
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static string GetSummary(PKM pk) => $"[{pk.Box:00}, {pk.Slot:00}] {pk.FileName}";
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var c = $"{msg}{Environment.NewLine}{GetSummary(first)}{Environment.NewLine}{GetSummary(second)}";
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var chk = new CheckResult(s, c, i);
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Parse.Add(chk);
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}
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private void CheckClones()
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{
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var dict = new Dictionary<string, LegalityAnalysis>();
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for (int i = 0; i < AllData.Count; i++)
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{
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var cp = AllData[i];
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var ca = AllAnalysis[i];
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Debug.Assert(cp.Format == Trainer.Generation);
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var identity = SearchUtil.HashByDetails(cp);
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if (!dict.TryGetValue(identity, out var pa))
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{
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dict.Add(identity, ca);
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continue;
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}
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CloneFlags[i] = true;
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AddLine(pa.pkm, cp, "Clone detected.", Encounter);
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}
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}
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private void CheckDuplicateOwnedGifts()
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{
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var dupes = AllAnalysis.Where(z =>
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z.Info.Generation >= 3
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&& z.EncounterOriginal is MysteryGift g
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&& g.EggEncounter
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&& !z.pkm.WasTradedEgg)
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.GroupBy(z => ((MysteryGift)z.EncounterOriginal).CardTitle);
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foreach (var dupe in dupes)
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{
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var tidGroup = dupe.GroupBy(z => z.pkm.TID | (z.pkm.SID << 16))
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.Select(z => z.ToList())
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.Where(z => z.Count >= 2).ToList();
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if (tidGroup.Count == 0)
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continue;
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AddLine(tidGroup[0][0].pkm, tidGroup[0][1].pkm, $"Receipt of the same egg mystery gifts detected: {dupe.Key}", Encounter);
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}
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}
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private void CheckECReuse()
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{
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var dict = new Dictionary<uint, LegalityAnalysis>();
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for (int i = 0; i < AllData.Count; i++)
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{
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if (CloneFlags[i])
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continue; // already flagged
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var cp = AllData[i];
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var ca = AllAnalysis[i];
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Debug.Assert(cp.Format >= 6);
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var id = cp.EncryptionConstant;
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if (!dict.TryGetValue(id, out var pa))
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{
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dict.Add(id, ca);
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continue;
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}
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VerifyECShare(pa, ca);
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}
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}
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private void CheckPIDReuse()
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{
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var dict = new Dictionary<uint, LegalityAnalysis>();
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for (int i = 0; i < AllData.Count; i++)
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{
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if (CloneFlags[i])
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continue; // already flagged
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var cp = AllData[i];
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var ca = AllAnalysis[i];
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bool g345 = 3 <= ca.Info.Generation && ca.Info.Generation <= 5;
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var id = g345 ? cp.EncryptionConstant : cp.PID;
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if (!dict.TryGetValue(id, out var pa))
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{
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dict.Add(id, ca);
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continue;
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}
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VerifyPIDShare(pa, ca);
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}
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}
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private void CheckIDReuse()
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{
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var dict = new Dictionary<int, LegalityAnalysis>();
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for (int i = 0; i < AllData.Count; i++)
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{
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if (CloneFlags[i])
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continue; // already flagged
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var cp = AllData[i];
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var ca = AllAnalysis[i];
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var id = cp.TID + (cp.SID << 16);
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Debug.Assert(cp.TID <= ushort.MaxValue);
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if (!dict.TryGetValue(id, out var pa))
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{
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dict.Add(id, ca);
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continue;
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}
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// ignore GB era collisions
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// a 16bit TID can reasonably occur for multiple trainers, and versions
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if (ca.Info.Generation <= 2 && pa.Info.Generation <= 2)
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continue;
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var pp = pa.pkm;
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if (VerifyIDReuse(pp, pa, cp, ca))
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continue;
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// egg encounters can be traded before hatching
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// store the current loop pkm if it's a better reference
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if (pp.WasTradedEgg && !cp.WasTradedEgg)
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dict[id] = ca;
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}
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}
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private void VerifyECShare(LegalityAnalysis pa, LegalityAnalysis ca)
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{
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const CheckIdentifier ident = PID;
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int gen = pa.Info.Generation;
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bool gbaNDS = 3 <= gen && gen <= 5;
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if (!gbaNDS)
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{
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if (ca.Info.Generation != gen)
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{
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AddLine(pa.pkm, ca.pkm, "EC sharing across generations detected.", ident);
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return;
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}
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AddLine(pa.pkm, ca.pkm, "EC sharing for 3DS-onward origin detected.", ident);
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return;
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}
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// eggs/mystery gifts shouldn't share with wild encounters
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var cenc = ca.Info.EncounterMatch;
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bool eggMysteryCurrent = cenc is EncounterEgg || cenc is MysteryGift;
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var penc = pa.Info.EncounterMatch;
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bool eggMysteryPrevious = penc is EncounterEgg || penc is MysteryGift;
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if (eggMysteryCurrent != eggMysteryPrevious)
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{
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AddLine(pa.pkm, ca.pkm, "EC sharing across RNG encounters detected.", ident);
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}
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}
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private void VerifyPIDShare(LegalityAnalysis pa, LegalityAnalysis ca)
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{
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const CheckIdentifier ident = PID;
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int gen = pa.Info.Generation;
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if (ca.Info.Generation != gen)
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{
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AddLine(pa.pkm, ca.pkm, "PID sharing across generations detected.", ident);
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return;
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}
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bool gbaNDS = 3 <= gen && gen <= 5;
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if (!gbaNDS)
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{
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AddLine(pa.pkm, ca.pkm, "PID sharing for 3DS-onward origin detected.", ident);
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return;
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}
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// eggs/mystery gifts shouldn't share with wild encounters
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var cenc = ca.Info.EncounterMatch;
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bool eggMysteryCurrent = cenc is EncounterEgg || cenc is MysteryGift;
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var penc = pa.Info.EncounterMatch;
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bool eggMysteryPrevious = penc is EncounterEgg || penc is MysteryGift;
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if (eggMysteryCurrent != eggMysteryPrevious)
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{
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AddLine(pa.pkm, ca.pkm, "PID sharing across RNG encounters detected.", ident);
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}
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}
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private bool VerifyIDReuse(PKM pp, LegalityAnalysis pa, PKM cp, LegalityAnalysis ca)
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{
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if (pa.EncounterMatch is MysteryGift g1 && !g1.EggEncounter)
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return false;
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if (ca.EncounterMatch is MysteryGift g2 && !g2.EggEncounter)
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return false;
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const CheckIdentifier ident = CheckIdentifier.Trainer;
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// 32bit ID-SID should only occur for one generation
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// Trainer-ID-SID should only occur for one version
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if (IsSharedVersion(pp, pa, cp, ca))
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{
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AddLine(pa.pkm, ca.pkm, "TID sharing across versions detected.", ident);
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return true;
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}
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// ID-SID should only occur for one Trainer name
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if (pp.OT_Name != cp.OT_Name)
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{
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var severity = ca.Info.Generation == 4 ? Severity.Fishy : Severity.Invalid;
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AddLine(pa.pkm, ca.pkm, "TID sharing across different trainer names detected.", ident, severity);
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}
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return false;
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}
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private static bool IsSharedVersion(PKM pp, LegalityAnalysis pa, PKM cp, LegalityAnalysis ca)
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{
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if (pp.Version == cp.Version)
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return false;
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// Traded eggs retain the original version ID, only on the same generation
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if (pa.Info.Generation != ca.Info.Generation)
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return false;
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if (pa.EncounterMatch.EggEncounter && pp.WasTradedEgg)
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return false; // version doesn't update on trade
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if (ca.EncounterMatch.EggEncounter && cp.WasTradedEgg)
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return false; // version doesn't update on trade
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return true;
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}
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private static IReadOnlyList<LegalityAnalysis> GetIndividualAnalysis(IReadOnlyList<PKM> pkms)
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{
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var results = new LegalityAnalysis[pkms.Count];
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for (int i = 0; i < pkms.Count; i++)
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results[i] = new LegalityAnalysis(pkms[i]);
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return results;
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}
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}
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}
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