using System;
using System.Collections.Generic;
using System.Linq;
using static PKHeX.Core.LegalityCheckStrings;
using static PKHeX.Core.ParseSettings;
using static PKHeX.Core.MoveSource;
using static PKHeX.Core.Severity;
using static PKHeX.Core.CheckIdentifier;
namespace PKHeX.Core
{
///
/// Logic to verify the current .
///
public static class VerifyCurrentMoves
{
///
/// Verifies the current moves of the data based on the provided .
///
/// Data to check
/// Encounter conditions and legality info
/// Validity of the
public static void VerifyMoves(PKM pkm, LegalInfo info)
{
var parse = info.Moves;
Array.ForEach(parse, p => p.Reset());
var currentMoves = pkm.Moves;
ParseMovesForEncounters(pkm, parse, info, currentMoves);
// Duplicate Moves Check
VerifyNoEmptyDuplicates(currentMoves, parse);
if (currentMoves[0] == 0) // Can't have an empty move slot for the first move.
parse[0].FlagIllegal(LMoveSourceEmpty, CurrentMove);
}
private static void ParseMovesForEncounters(PKM pkm, CheckMoveResult[] parse, LegalInfo info, int[] currentMoves)
{
if (pkm.Species == (int)Species.Smeargle) // special handling for Smeargle
{
ParseMovesForSmeargle(pkm, parse, currentMoves, info); // Smeargle can have any moves except a few
return;
}
// gather valid moves for encounter species
info.EncounterMoves = new ValidEncounterMoves(pkm, info.EncounterMatch, info.EvoChainsAllGens);
if (info.Generation >= 6)
ParseMoves3DS(pkm, parse, currentMoves, info);
else
ParseMovesPre3DS(pkm, parse, currentMoves, info);
}
private static void ParseMovesForSmeargle(PKM pkm, CheckMoveResult[] parse, int[] currentMoves, LegalInfo info)
{
if (!pkm.IsEgg)
{
ParseMovesSketch(pkm, parse, currentMoves);
return;
}
// can only know sketch as egg
var levelup = new int[info.EvoChainsAllGens.Length][];
levelup[pkm.Format] = new[] { (int)Move.Sketch };
info.EncounterMoves = new ValidEncounterMoves(levelup);
var source = new MoveParseSource { CurrentMoves = currentMoves };
ParseMoves(pkm, source, info, parse);
}
private static void ParseMovesWasEggPreRelearn(PKM pkm, CheckMoveResult[] parse, IReadOnlyList currentMoves, LegalInfo info, EncounterEgg e)
{
// Level up moves could not be inherited if Ditto is parent,
// that means genderless species and male only species (except Nidoran-M and Volbeat; they breed with Nidoran-F and Illumise) could not have level up moves as an egg
var pi = pkm.PersonalInfo;
var AllowLevelUp = !pi.Genderless && !(pi.OnlyMale && Breeding.MixedGenderBreeding.Contains(e.Species));
int BaseLevel = AllowLevelUp ? 100 : e.LevelMin;
var LevelUp = MoveList.GetBaseEggMoves(pkm, e.Species, e.Form, e.Version, BaseLevel);
var TradebackPreevo = pkm.Format == 2 && e.Species > 151;
var NonTradebackLvlMoves = TradebackPreevo
? MoveList.GetExclusivePreEvolutionMoves(pkm, e.Species, info.EvoChainsAllGens.Gen2, 2, e.Version).Where(m => m > Legal.MaxMoveID_1).ToArray()
: Array.Empty();
var Egg = MoveEgg.GetEggMoves(pkm.PersonalInfo, e.Species, e.Form, e.Version, e.Generation);
if (info.Generation < 3 && pkm.Format >= 7 && pkm.VC1)
Egg = Array.FindAll(Egg, m => m <= Legal.MaxMoveID_1);
var specialMoves = e.CanHaveVoltTackle ? new[] { (int)Move.VoltTackle } : Array.Empty(); // Volt Tackle for bred Pichu line
var source = new MoveParseSource
{
CurrentMoves = currentMoves,
SpecialSource = specialMoves,
NonTradeBackLevelUpMoves = NonTradebackLvlMoves,
EggLevelUpSource = LevelUp,
EggMoveSource = Egg,
};
ParseMoves(pkm, source, info, parse);
}
private static void ParseMovesSketch(PKM pkm, CheckMoveResult[] parse, ReadOnlySpan currentMoves)
{
for (int i = parse.Length - 1; i >= 0; i--)
{
var r = parse[i];
var move = currentMoves[i];
if (move == 0)
r.Set(None, pkm.Format, Valid, LMoveSourceEmpty, CurrentMove);
else if (Legal.IsValidSketch(move, pkm.Format))
r.Set(Sketch, pkm.Format, Valid, L_AValid, CurrentMove);
else
r.Set(Unknown, pkm.Format, Invalid, LMoveSourceInvalidSketch, CurrentMove);
}
}
private static void ParseMoves3DS(PKM pkm, CheckMoveResult[] parse, IReadOnlyList currentMoves, LegalInfo info)
{
info.EncounterMoves.Relearn = info.Generation >= 6 ? pkm.RelearnMoves : Array.Empty();
if (info.EncounterMatch is IMoveset)
ParseMovesSpecialMoveset(pkm, currentMoves, info, parse);
else
ParseMovesRelearn(pkm, currentMoves, info, parse);
}
private static void ParseMovesPre3DS(PKM pkm, CheckMoveResult[] parse, int[] currentMoves, LegalInfo info)
{
if (info.EncounterMatch is EncounterEgg e)
{
if (pkm.IsEgg)
VerifyRelearnMoves.VerifyEggMoveset(e, parse, currentMoves, CurrentMove);
else
ParseMovesWasEggPreRelearn(pkm, parse, currentMoves, info, e);
return;
}
// Not all games have a re-learner. Initial moves may not fill out all 4 slots.
int gen = info.EncounterMatch.Generation;
if (gen == 1 || (gen == 2 && !AllowGen2MoveReminder(pkm)))
ParseMovesGenGB(pkm, currentMoves, info, parse);
ParseMovesSpecialMoveset(pkm, currentMoves, info, parse);
}
private static void ParseMovesGenGB(PKM pkm, IReadOnlyList currentMoves, LegalInfo info, CheckMoveResult[] parse)
{
var enc = info.EncounterMatch;
var evos = info.EvoChainsAllGens[enc.Generation];
var level = evos.Length > 0 ? evos[^1].LevelMin : enc.LevelMin;
var InitialMoves = Array.Empty();
var games = enc.Generation == 1 ? GBRestrictions.GetGen1Versions(enc) : GBRestrictions.GetGen2Versions(enc, pkm.Korean);
foreach (var ver in games)
{
var VerInitialMoves = enc is IMoveset {Moves.Count: not 0 } x ? (int[])x.Moves : MoveLevelUp.GetEncounterMoves(enc.Species, 0, level, ver);
if (VerInitialMoves.SequenceEqual(InitialMoves))
return; // Already checked this combination, and it wasn't valid. Don't bother repeating.
var source = new MoveParseSource
{
CurrentMoves = currentMoves,
Base = VerInitialMoves,
};
ParseMoves(pkm, source, info, parse);
// Must have a minimum count of moves, depending on the tradeback state.
if (pkm is PK1 pk1)
{
int count = GBRestrictions.GetRequiredMoveCount(pk1, source.CurrentMoves, info, source.Base);
if (count == 1)
return;
// Reverse for loop and break instead of 0..count continue -- early-breaks for the vast majority of cases.
// We already flag for empty interstitial moveslots.
for (int m = count - 1; m >= 0; m--)
{
var move = source.CurrentMoves[m];
if (move != 0)
break;
// There are ways to skip level up moves by leveling up more than once.
// https://bulbapedia.bulbagarden.net/wiki/List_of_glitches_(Generation_I)#Level-up_learnset_skipping
// Evolution canceling also leads to incorrect assumptions in the above used method, so just indicate them as fishy in that case.
// Not leveled up? Not possible to be missing the move slot.
var severity = enc.LevelMin == pkm.CurrentLevel ? Invalid : Fishy;
parse[m].Set(None, pkm.Format, severity, LMoveSourceEmpty, CurrentMove);
}
}
if (Array.TrueForAll(parse, z => z.Valid))
return;
InitialMoves = VerInitialMoves;
}
}
private static void ParseMovesSpecialMoveset(PKM pkm, IReadOnlyList currentMoves, LegalInfo info, CheckMoveResult[] parse)
{
var source = new MoveParseSource
{
CurrentMoves = currentMoves,
SpecialSource = GetSpecialMoves(info.EncounterMatch),
};
ParseMoves(pkm, source, info, parse);
}
private static IReadOnlyList GetSpecialMoves(IEncounterTemplate enc)
{
if (enc is IMoveset mg)
return mg.Moves;
return Array.Empty();
}
private static void ParseMovesRelearn(PKM pkm, IReadOnlyList currentMoves, LegalInfo info, CheckMoveResult[] parse)
{
var source = new MoveParseSource
{
CurrentMoves = currentMoves,
SpecialSource = GetSpecialMoves(info.EncounterMatch),
};
if (info.EncounterMatch is EncounterEgg e)
source.EggMoveSource = MoveEgg.GetEggMoves(pkm.PersonalInfo, e.Species, e.Form, e.Version, e.Generation);
ParseMoves(pkm, source, info, parse);
var relearn = pkm.RelearnMoves;
for (int i = parse.Length - 1; i >= 0; i--)
{
var r = parse[i];
if (!r.IsRelearn && !pkm.IsEgg)
continue;
if (relearn.Contains(currentMoves[i]))
continue;
r.FlagIllegal(string.Format(LMoveRelearnFMiss_0, r.Comment));
}
}
private static void ParseMoves(PKM pkm, MoveParseSource source, LegalInfo info, CheckMoveResult[] parse)
{
// Special considerations!
const int NoMinGeneration = 0;
int minGeneration = NoMinGeneration;
if (pkm.IsOriginalMovesetDeleted())
{
var (_, resetGame) = pkm.IsMovesetRestricted();
minGeneration = resetGame.GetGeneration();
source.ResetSources();
}
// Check empty moves and relearn moves before generation specific moves
for (int m = parse.Length - 1; m >= 0; m--)
{
var move = source.CurrentMoves[m];
var r = parse[m];
if (move == 0)
r.Set(None, pkm.Format, Valid, LMoveSourceEmpty, CurrentMove);
else if (minGeneration == NoMinGeneration && info.EncounterMoves.Relearn.Contains(move))
r.Set(Relearn, info.Generation, Valid, LMoveSourceRelearn, CurrentMove);
}
if (Array.TrueForAll(parse, z => z.IsParsed))
return;
// Encapsulate arguments to simplify method calls
var moveInfo = new LearnInfo(pkm, source);
// Check moves going backwards, marking the move valid in the most current generation when it can be learned
int[] generations = GenerationTraversal.GetVisitedGenerationOrder(pkm, info.EncounterOriginal.Generation);
if (pkm.Format <= 2)
generations = Array.FindAll(generations, z => z < info.EncounterMoves.LevelUpMoves.Length);
if (minGeneration != NoMinGeneration)
generations = Array.FindAll(generations, z => z >= minGeneration);
if (generations.Length != 0)
{
int lastgen = generations[^1];
foreach (var gen in generations)
{
ParseMovesByGeneration(pkm, parse, gen, info, moveInfo, lastgen);
if (Array.TrueForAll(parse, z => z.IsParsed))
return;
}
}
if (pkm.Species == (int)Species.Shedinja && info.Generation <= 4)
ParseShedinjaEvolveMoves(pkm, parse, source.CurrentMoves, info.EvoChainsAllGens);
foreach (var r in parse)
{
if (!r.IsParsed)
r.Set(Unknown, info.Generation, Invalid, LMoveSourceInvalid, CurrentMove);
}
}
private static void ParseMovesByGeneration(PKM pkm, CheckMoveResult[] parse, int gen, LegalInfo info, LearnInfo learnInfo, int last)
{
Span HMLearned = stackalloc bool[parse.Length];
bool KnowDefogWhirlpool = GetHMCompatibility(pkm, parse, gen, learnInfo.Source.CurrentMoves, HMLearned);
ParseMovesByGeneration(pkm, parse, gen, info, learnInfo);
if (gen == last)
ParseMovesByGenerationLast(parse, learnInfo, info.EncounterMatch);
switch (gen)
{
case 1 or 2:
ParseMovesByGeneration12(pkm, parse, learnInfo.Source.CurrentMoves, gen, info, learnInfo);
break;
case 3 or 4:
if (pkm.Format > gen)
FlagIncompatibleTransferHMs45(parse, learnInfo.Source.CurrentMoves, gen, HMLearned, KnowDefogWhirlpool);
break;
}
}
private static void ParseMovesByGeneration(PKM pkm, CheckMoveResult[] parse, int gen, LegalInfo info, LearnInfo learnInfo)
{
var moves = learnInfo.Source.CurrentMoves;
bool native = gen == pkm.Format;
for (int m = parse.Length - 1; m >= 0; m--)
{
var r = parse[m];
if (IsCheckValid(r)) // already validated with another generation
continue;
int move = moves[m];
if (move == 0)
continue;
if (gen <= 2)
{
if (gen == 2 && !native && move > Legal.MaxMoveID_1 && pkm.VC1)
{
r.Set(Unknown, gen, Invalid, LMoveSourceInvalid, CurrentMove);
continue;
}
if (gen == 2 && learnInfo.Source.EggMoveSource.Contains(move))
r.Set(EggMove, gen, Valid, LMoveSourceEgg, CurrentMove);
else if (learnInfo.Source.Base.Contains(move))
r.Set(Initial, gen, Valid, native ? LMoveSourceDefault : string.Format(LMoveFDefault_0, gen), CurrentMove);
}
if (info.EncounterMoves.LevelUpMoves[gen].Contains(move))
r.Set(LevelUp, gen, Valid, native ? LMoveSourceLevelUp : string.Format(LMoveFLevelUp_0, gen), CurrentMove);
else if (info.EncounterMoves.TMHMMoves[gen].Contains(move))
r.Set(TMHM, gen, Valid, native ? LMoveSourceTMHM : string.Format(LMoveFTMHM_0, gen), CurrentMove);
else if (info.EncounterMoves.TutorMoves[gen].Contains(move))
r.Set(Tutor, gen, Valid, native ? LMoveSourceTutor : string.Format(LMoveFTutor_0, gen), CurrentMove);
else if (gen == info.Generation && learnInfo.Source.SpecialSource.Contains(move))
r.Set(Special, gen, Valid, LMoveSourceSpecial, CurrentMove);
else if (gen >= 8 && MoveEgg.GetIsSharedEggMove(pkm, gen, move))
r.Set(Shared, gen, Valid, native ? LMoveSourceShared : string.Format(LMoveSourceSharedF, gen), CurrentMove);
if (gen >= 3 || !IsCheckValid(r))
continue;
// Gen1/Gen2 only below
if (gen == 2 && learnInfo.Source.NonTradeBackLevelUpMoves.Contains(m))
{
learnInfo.Gen2PreevoMoves.Add(m);
}
else if (gen == 1)
{
learnInfo.Gen1Moves.Add(m);
if (learnInfo.Gen2PreevoMoves.Count != 0)
learnInfo.MixedGen12NonTradeback = true;
}
}
}
private static void ParseMovesByGeneration12(PKM pkm, CheckMoveResult[] parse, IReadOnlyList currentMoves, int gen, LegalInfo info, LearnInfo learnInfo)
{
// Mark the gen 1 exclusive moves as illegal because the pokemon also have Non tradeback egg moves.
if (learnInfo.MixedGen12NonTradeback)
{
foreach (int m in learnInfo.Gen1Moves)
parse[m].FlagIllegal(LG1MoveExclusive, CurrentMove);
foreach (int m in learnInfo.Gen2PreevoMoves)
parse[m].FlagIllegal(LG1TradebackPreEvoMove, CurrentMove);
}
if (gen == 1 && pkm.Format == 1 && !AllowGen1Tradeback)
{
ParseRedYellowIncompatibleMoves(pkm, parse, currentMoves);
ParseEvolutionsIncompatibleMoves(pkm, parse, currentMoves, info.EncounterMoves.TMHMMoves[1]);
}
}
private static void ParseMovesByGenerationLast(CheckMoveResult[] parse, LearnInfo learnInfo, IEncounterTemplate enc)
{
int gen = enc.Generation;
ParseEggMovesInherited(parse, gen, learnInfo);
ParseEggMoves(parse, gen, learnInfo);
ParseEggMovesRemaining(parse, learnInfo, enc);
}
private static void ParseEggMovesInherited(CheckMoveResult[] parse, int gen, LearnInfo learnInfo)
{
var moves = learnInfo.Source.CurrentMoves;
// Check higher-level moves after all the moves but just before egg moves to differentiate it from normal level up moves
// Also check if the base egg moves is a non tradeback move
for (int m = parse.Length - 1; m >= 0; m--)
{
var r = parse[m];
if (IsCheckValid(r)) // already validated
{
if (gen == 2 && r.Generation != 1)
continue;
}
int move = moves[m];
if (move == 0)
continue;
if (!learnInfo.Source.EggLevelUpSource.Contains(move)) // Check if contains level-up egg moves from parents
continue;
if (learnInfo.IsGen2Pkm && learnInfo.Gen1Moves.Count != 0 && move > Legal.MaxMoveID_1)
{
r.Set(InheritLevelUp, gen, Invalid, LG1MoveTradeback, CurrentMove);
learnInfo.MixedGen12NonTradeback = true;
}
else
{
r.Set(InheritLevelUp, gen, Valid, LMoveEggLevelUp, CurrentMove);
}
learnInfo.LevelUpEggMoves.Add(m);
if (gen == 2 && learnInfo.Gen1Moves.Contains(m))
learnInfo.Gen1Moves.Remove(m);
}
}
private static void ParseEggMoves(CheckMoveResult[] parse, int gen, LearnInfo learnInfo)
{
var moves = learnInfo.Source.CurrentMoves;
// Check egg moves after all the generations and all the moves, every move that can't be learned in another source should have preference
// the moves that can only be learned from egg moves should in the future check if the move combinations can be breed in gens 2 to 5
for (int m = parse.Length - 1; m >= 0; m--)
{
var r = parse[m];
if (IsCheckValid(r))
continue;
int move = moves[m];
if (move == 0)
continue;
bool wasEggMove = learnInfo.Source.EggMoveSource.Contains(move);
if (wasEggMove)
{
// To learn exclusive generation 1 moves the pokemon was tradeback, but it can't be trade to generation 1
// without removing moves above MaxMoveID_1, egg moves above MaxMoveID_1 and gen 1 moves are incompatible
if (learnInfo.IsGen2Pkm && learnInfo.Gen1Moves.Count != 0 && move > Legal.MaxMoveID_1)
{
r.Set(EggMove, gen, Invalid, LG1MoveTradeback, CurrentMove);
learnInfo.MixedGen12NonTradeback = true;
}
else
{
r.Set(EggMove, gen, Valid, LMoveSourceEgg, CurrentMove);
}
learnInfo.EggMovesLearned.Add(m);
}
if (!learnInfo.Source.EggEventSource.Contains(move))
continue;
if (!wasEggMove)
{
if (learnInfo.IsGen2Pkm && learnInfo.Gen1Moves.Count != 0 && move > Legal.MaxMoveID_1)
{
r.Set(SpecialEgg, gen, Invalid, LG1MoveTradeback, CurrentMove);
learnInfo.MixedGen12NonTradeback = true;
}
else
{
r.Set(SpecialEgg, gen, Valid, LMoveSourceEggEvent, CurrentMove);
}
}
learnInfo.EventEggMoves.Add(m);
}
}
private static void ParseEggMovesRemaining(CheckMoveResult[] parse, LearnInfo learnInfo, IEncounterTemplate enc)
{
// A pokemon could have normal egg moves and regular egg moves
// Only if all regular egg moves are event egg moves or all event egg moves are regular egg moves
var RegularEggMovesLearned = learnInfo.EggMovesLearned.FindAll(learnInfo.LevelUpEggMoves.Contains);
if (RegularEggMovesLearned.Count != 0 && learnInfo.EventEggMoves.Count != 0)
{
// Moves that are egg moves or event egg moves but not both
var IncompatibleEggMoves = RegularEggMovesLearned.Except(learnInfo.EventEggMoves).Union(learnInfo.EventEggMoves.Except(RegularEggMovesLearned));
foreach (int m in IncompatibleEggMoves)
{
bool isEvent = learnInfo.EventEggMoves.Contains(m);
if (isEvent)
{
if (!learnInfo.EggMovesLearned.Contains(m))
parse[m].FlagIllegal(LMoveEggIncompatibleEvent, CurrentMove);
}
else
{
if (learnInfo.EggMovesLearned.Contains(m))
parse[m].FlagIllegal(LMoveEggIncompatible, CurrentMove);
else if (learnInfo.LevelUpEggMoves.Contains(m))
parse[m].FlagIllegal(LMoveEventEggLevelUp, CurrentMove);
}
}
}
else if (enc is not EncounterEgg)
{
// Event eggs cannot inherit moves from parents; they are not bred.
var gift = enc is EncounterStatic {Gift: true}; // otherwise, EncounterInvalid
foreach (int m in RegularEggMovesLearned)
{
if (learnInfo.EggMovesLearned.Contains(m))
parse[m].FlagIllegal(gift ? LMoveEggMoveGift : LMoveEggInvalidEvent, CurrentMove);
else if (learnInfo.LevelUpEggMoves.Contains(m))
parse[m].FlagIllegal(gift ? LMoveEggInvalidEventLevelUpGift : LMoveEggInvalidEventLevelUp, CurrentMove);
}
}
}
private static void ParseRedYellowIncompatibleMoves(PKM pkm, CheckMoveResult[] parse, IReadOnlyList currentMoves)
{
var incompatible = GetIncompatibleRBYMoves(pkm, currentMoves);
if (incompatible.Count == 0)
return;
for (int m = parse.Length - 1; m >= 0; m--)
{
if (incompatible.Contains(currentMoves[m]))
parse[m].FlagIllegal(LG1MoveLearnSameLevel, CurrentMove);
}
}
private static IList GetIncompatibleRBYMoves(PKM pkm, IReadOnlyList currentMoves)
{
// Check moves that are learned at the same level in Red/Blue and Yellow, these are illegal because there is no Move Reminder in Gen1.
// There are only two incompatibilities for Gen1; there are no illegal combination in Gen2.
switch (pkm.Species)
{
// Vaporeon in Yellow learns Mist and Haze at level 42, Mist can only be learned if it leveled up in the daycare
// Vaporeon in Red/Blue learns Acid Armor at level 42 and level 47 in Yellow
case (int)Species.Vaporeon when pkm.CurrentLevel < 47 && currentMoves.Contains((int)Move.AcidArmor):
{
var incompatible = new List(3);
if (currentMoves.Contains((int)Move.Mist)) incompatible.Add((int)Move.Mist);
if (currentMoves.Contains((int)Move.Haze)) incompatible.Add((int)Move.Haze);
if (incompatible.Count != 0)
incompatible.Add((int)Move.AcidArmor);
else
return Array.Empty();
return incompatible;
}
// Flareon in Yellow learns Smog at level 42
// Flareon in Red Blue learns Leer at level 42 and level 47 in Yellow
case (int)Species.Flareon when pkm.CurrentLevel < 47 && currentMoves.Contains((int)Move.Leer) && currentMoves.Contains((int)Move.Smog):
return new[] { (int)Move.Leer, (int)Move.Smog };
default: return Array.Empty();
}
}
private static void ParseEvolutionsIncompatibleMoves(PKM pkm, CheckMoveResult[] parse, IReadOnlyList moves, IReadOnlyList tmhm)
{
GBRestrictions.GetIncompatibleEvolutionMoves(pkm, moves, tmhm,
out var prevSpeciesID,
out var incompatPrev,
out var incompatCurr);
if (prevSpeciesID == 0)
return;
var prev = SpeciesStrings[prevSpeciesID];
var curr = SpeciesStrings[pkm.Species];
for (int m = parse.Length - 1; m >= 0; m--)
{
if (incompatCurr.Contains(moves[m]))
parse[m].FlagIllegal(string.Format(LMoveEvoFLower, curr, prev), CurrentMove);
if (incompatPrev.Contains(moves[m]))
parse[m].FlagIllegal(string.Format(LMoveEvoFHigher, curr, prev), CurrentMove);
}
}
private static void ParseShedinjaEvolveMoves(PKM pkm, CheckMoveResult[] parse, IReadOnlyList currentMoves, EvolutionHistory evos)
{
int shedinjaEvoMoveIndex = 0;
var format = pkm.Format;
for (int gen = Math.Min(format, 4); gen >= 3; gen--)
{
if (evos[gen].Length != 2)
continue; // Was not evolved in this generation
if (gen == 4 && pkm.Ball != 4 && !(pkm.Ball == (int)Ball.Sport && pkm.HGSS))
continue; // Was definitively evolved in Gen3
var maxLevel = pkm.CurrentLevel;
var ninjaskMoves = MoveList.GetShedinjaEvolveMoves(pkm, gen, maxLevel);
bool native = gen == format;
for (int m = parse.Length - 1; m >= 0; m--)
{
var r = parse[m];
if (IsCheckValid(r)) // already validated
continue;
if (!ninjaskMoves.Contains(currentMoves[m]))
continue;
// Can't have more than one Ninjask exclusive move on Shedinja
if (shedinjaEvoMoveIndex != 0)
{
r.FlagIllegal(LMoveNincada, CurrentMove);
continue;
}
var msg = native ? LMoveNincadaEvo : string.Format(LMoveNincadaEvoF_0, gen);
r.Set(ShedinjaEvo, gen, Valid, msg, CurrentMove);
shedinjaEvoMoveIndex = m;
}
}
if (shedinjaEvoMoveIndex == 0)
return;
// Double check that the Ninjask move level isn't less than any Nincada move level
{
var r = parse[shedinjaEvoMoveIndex];
if (r.Source != LevelUp)
return;
var move = currentMoves[shedinjaEvoMoveIndex];
int levelS = MoveList.GetShedinjaMoveLevel((int)Species.Shedinja, move, r.Generation);
if (levelS > 0)
return;
int levelN = MoveList.GetShedinjaMoveLevel((int)Species.Nincada, move, r.Generation);
int levelJ = MoveList.GetShedinjaMoveLevel((int)Species.Ninjask, move, r.Generation);
if (levelN > levelJ)
r.FlagIllegal(string.Format(LMoveEvoFHigher, SpeciesStrings[(int)Species.Nincada], SpeciesStrings[(int)Species.Ninjask]), CurrentMove);
}
}
private static bool GetHMCompatibility(PKM pkm, IReadOnlyList parse, int gen, IReadOnlyList moves, Span HMLearned)
{
// Check if pokemon knows HM moves from generation 3 and 4 but are not valid yet, that means it cant learn the HMs in future generations
if (gen == 4 && pkm.Format > 4)
{
FlagIsHMSource(HMLearned, Legal.HM_4_RemovePokeTransfer);
return moves.Where((m, i) => IsDefogWhirl(m) && IsCheckInvalid(parse[i])).Count() == 2;
}
if (gen == 3 && pkm.Format > 3)
FlagIsHMSource(HMLearned, Legal.HM_3);
return false;
void FlagIsHMSource(Span flags, ICollection source)
{
for (int i = parse.Count - 1; i >= 0; i--)
flags[i] = IsCheckInvalid(parse[i]) && source.Contains(moves[i]);
}
}
private static bool IsDefogWhirl(int move) => move is (int)Move.Defog or (int)Move.Whirlpool;
private static int GetDefogWhirlCount(IReadOnlyList parse, IReadOnlyList moves)
{
int ctr = 0;
for (int i = moves.Count - 1; i >= 0; i--)
{
if (!IsDefogWhirl(moves[i]))
continue;
var r = parse[i];
if (!r.Valid || r.Generation >= 5)
continue;
ctr++;
}
return ctr;
}
private static bool IsCheckInvalid(CheckMoveResult chk) => chk.IsParsed && !chk.Valid;
private static bool IsCheckValid(CheckMoveResult chk) => chk.IsParsed && chk.Valid;
private static void FlagIncompatibleTransferHMs45(IReadOnlyList parse, IReadOnlyList currentMoves, int gen, ReadOnlySpan HMLearned, bool KnowDefogWhirlpool)
{
// After all the moves from the generations 3 and 4,
// including egg moves if is the origin generation because some hidden moves are also special egg moves in gen 3
// Check if the marked hidden moves that were invalid at the start are now marked as valid, that means
// the hidden move was learned in gen 3 or 4 but was not removed when transfer to 4 or 5
if (KnowDefogWhirlpool)
{
int invalidCount = GetDefogWhirlCount(parse, currentMoves);
if (invalidCount == 2) // can't know both at the same time
{
for (int i = parse.Count - 1; i >= 0; i--) // flag both moves
{
if (IsDefogWhirl(currentMoves[i]))
parse[i].FlagIllegal(LTransferMoveG4HM, CurrentMove);
}
}
}
// Flag moves that are only legal when learned from a past-gen HM source
for (int i = HMLearned.Length - 1; i >= 0; i--)
{
if (HMLearned[i] && IsCheckValid(parse[i]))
parse[i].FlagIllegal(string.Format(LTransferMoveHM, gen, gen + 1), CurrentMove);
}
}
private static void VerifyNoEmptyDuplicates(ReadOnlySpan moves, ReadOnlySpan parse)
{
bool emptySlot = false;
for (int i = 0; i < parse.Length; i++)
{
var move = moves[i];
if (move == 0)
{
emptySlot = true;
continue;
}
// If an empty slot was noted for a prior move, flag the empty slots.
if (emptySlot)
{
FlagEmptySlotsBeforeIndex(moves, parse, i);
emptySlot = false;
continue;
}
// Check for same move in next move slots
FlagDuplicateMovesAfterIndex(moves, parse, i, move);
}
}
private static void FlagDuplicateMovesAfterIndex(ReadOnlySpan moves, ReadOnlySpan parse, int index, int move)
{
for (int i = parse.Length - 1; i > index; i--)
{
if (moves[i] != move)
continue;
parse[index].FlagIllegal(LMoveSourceEmpty);
return;
}
}
private static void FlagEmptySlotsBeforeIndex(ReadOnlySpan moves, ReadOnlySpan parse, int index)
{
for (int i = index - 1; i >= 0; i--)
{
if (moves[i] != 0)
return;
parse[i].FlagIllegal(LMoveSourceEmpty);
}
}
}
}