mirror of
https://github.com/kwsch/PKHeX
synced 2024-11-15 08:47:14 +00:00
c730dfa1ba
held item list now allocates less (concat arrays instead of ienumerables) item list already prunes out of range items, so simplify data source fetch simplify item list prune (return as list, so we can call RemoveAll instead of Where.ToList)
458 lines
22 KiB
C#
458 lines
22 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using PKHeX.Core;
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using static PKHeX.Core.Legal;
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namespace PKHeX
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{
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/// <summary>
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/// Miscellaneous GB Era restriction logic for legality checking
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/// </summary>
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internal static class GBRestrictions
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{
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private static readonly int[] G1CaterpieMoves = { 33, 81 };
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private static readonly int[] G1WeedleMoves = { 40, 81 };
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//private static readonly int[] G1MetapodMoves = { 33, 81, 106 };
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private static readonly int[] G1KakunaMoves = { 40, 81, 106 };
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private static readonly int[] G1Exeggcute_IncompatibleMoves = { 78, 77, 79 };
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internal static readonly int[] Stadium_CatchRate =
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{
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167, // Normal Box
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168, // Gorgeous Box
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};
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private static readonly HashSet<int> Stadium_GiftSpecies = new HashSet<int>
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{
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001, // Bulbasaur
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004, // Charmander
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007, // Squirtle
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054, // Psyduck (Amnesia)
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106, // Hitmonlee
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107, // Hitmonchan
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133, // Eevee
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138, // Omanyte
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140, // Kabuto
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};
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private static readonly HashSet<int> SpecialMinMoveSlots = new HashSet<int>
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{
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25, 26, 29, 30, 31, 32, 33, 34, 36, 38, 40, 59, 91, 103, 114, 121,
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};
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internal static bool TypeIDExists(int type) => Types_Gen1.Contains(type);
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private static readonly HashSet<int> Types_Gen1 = new HashSet<int>
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{
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0, 1, 2, 3, 4, 5, 7, 8, 20, 21, 22, 23, 24, 25, 26
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};
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internal static readonly HashSet<int> Species_NotAvailable_CatchRate = new HashSet<int>
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{
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12, 18, 31, 34, 38, 45, 53, 59, 62, 65, 68, 71, 78, 91, 103, 121
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};
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internal static readonly HashSet<int> Trade_Evolution1 = new HashSet<int>
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{
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064,
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067,
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075,
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093
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};
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private static int[] GetMinLevelLearnMoveG1(int species, List<int> moves)
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{
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var result = new int[moves.Count];
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for (int i = 0; i < result.Length; i++)
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result[i] = MoveLevelUp.GetIsLevelUp1(species, moves[i], 100, 0, 0).Level;
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return result;
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}
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private static int[] GetMaxLevelLearnMoveG1(int species, List<int> moves)
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{
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var result = new int[moves.Count];
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int index = PersonalTable.RB.GetFormeIndex(species, 0);
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if (index == 0)
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return result;
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var pi_rb = ((PersonalInfoG1)PersonalTable.RB[index]).Moves;
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var pi_y = ((PersonalInfoG1)PersonalTable.Y[index]).Moves;
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for (int m = 0; m < moves.Count; m++)
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{
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bool start = pi_rb.Contains(moves[m]) && pi_y.Contains(moves[m]);
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result[m] = start ? 1 : Math.Max(GetHighest(LevelUpRB), GetHighest(LevelUpY));
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int GetHighest(IReadOnlyList<Learnset> learn) => learn[index].GetLevelLearnMove(moves[m]);
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}
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return result;
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}
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private static List<int>[] GetExclusiveMovesG1(int species1, int species2, IEnumerable<int> tmhm, IEnumerable<int> moves)
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{
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// Return from two species the exclusive moves that only one could learn and also the current pokemon have it in its current moveset
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var moves1 = MoveLevelUp.GetMovesLevelUp1(species1, 0, 1, 100);
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var moves2 = MoveLevelUp.GetMovesLevelUp1(species2, 0, 1, 100);
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// Remove common moves and remove tmhm, remove not learned moves
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var common = new HashSet<int>(moves1.Intersect(moves2).Concat(tmhm));
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var hashMoves = new HashSet<int>(moves);
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moves1.RemoveAll(x => !hashMoves.Contains(x) || common.Contains(x));
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moves2.RemoveAll(x => !hashMoves.Contains(x) || common.Contains(x));
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return new[] { moves1, moves2 };
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}
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internal static void GetIncompatibleEvolutionMoves(PKM pkm, IReadOnlyList<int> moves, IReadOnlyList<int> tmhm, out int previousspecies, out IList<int> incompatible_previous, out IList<int> incompatible_current)
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{
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switch (pkm.Species)
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{
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case (int)Species.Nidoking when moves.Contains(31) && moves.Contains(37):
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// Nidoking learns Thrash at level 23
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// Nidorino learns Fury Attack at level 36, Nidoran♂ at level 30
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// Other moves are either learned by Nidoran♂ up to level 23 or by TM
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incompatible_current = new[] { 31 };
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incompatible_previous = new[] { 37 };
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previousspecies = 33;
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return;
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case (int)Species.Exeggutor when moves.Contains(23) && moves.Any(m => G1Exeggcute_IncompatibleMoves.Contains(moves[m])):
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// Exeggutor learns stomp at level 28
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// Exeggcute learns Stun Spore at 32, PoisonPowder at 37 and Sleep Powder at 48
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incompatible_current = new[] { 23 };
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incompatible_previous = G1Exeggcute_IncompatibleMoves;
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previousspecies = 103;
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return;
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case (int)Species.Vaporeon:
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case (int)Species.Jolteon:
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case (int)Species.Flareon:
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incompatible_previous = new List<int>();
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incompatible_current = new List<int>();
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previousspecies = 133;
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var ExclusiveMoves = GetExclusiveMovesG1((int)Species.Eevee, pkm.Species, tmhm, moves);
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var EeveeLevels = GetMinLevelLearnMoveG1((int)Species.Eevee, ExclusiveMoves[0]);
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var EvoLevels = GetMaxLevelLearnMoveG1(pkm.Species, ExclusiveMoves[1]);
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for (int i = 0; i < ExclusiveMoves[0].Count; i++)
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{
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// There is a evolution move with a lower level that current eevee move
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if (EvoLevels.Any(ev => ev < EeveeLevels[i]))
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incompatible_previous.Add(ExclusiveMoves[0][i]);
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}
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for (int i = 0; i < ExclusiveMoves[1].Count; i++)
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{
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// There is a eevee move with a greather level that current evolution move
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if (EeveeLevels.Any(ev => ev > EvoLevels[i]))
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incompatible_current.Add(ExclusiveMoves[1][i]);
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}
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return;
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}
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incompatible_previous = Array.Empty<int>();
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incompatible_current = Array.Empty<int>();
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previousspecies = 0;
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}
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internal static int GetRequiredMoveCount(PKM pk, IReadOnlyList<int> moves, LegalInfo info, IReadOnlyList<int> initialmoves)
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{
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if (!pk.Gen1_NotTradeback) // No Move Deleter in Gen 1
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return 1; // Move Deleter exits, slots from 2 onwards can always be empty
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int required = GetRequiredMoveCount(pk, moves, info.EncounterMoves.LevelUpMoves, initialmoves);
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if (required >= 4)
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return 4;
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// tm, hm and tutor moves replace a free slots if the pokemon have less than 4 moves
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// Ignore tm, hm and tutor moves already in the learnset table
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var learn = info.EncounterMoves.LevelUpMoves;
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var tmhm = info.EncounterMoves.TMHMMoves;
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var tutor = info.EncounterMoves.TutorMoves;
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var union = initialmoves.Union(learn[1]);
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required += moves.Count(m => m != 0 && union.All(t => t != m) && (tmhm[1].Any(t => t == m) || tutor[1].Any(t => t == m)));
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return Math.Min(4, required);
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}
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private static int GetRequiredMoveCount(PKM pk, IReadOnlyList<int> moves, IReadOnlyList<int>[] learn, IReadOnlyList<int> initialmoves)
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{
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if (SpecialMinMoveSlots.Contains(pk.Species))
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return GetRequiredMoveCountSpecial(pk, moves, learn);
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// A pokemon is captured with initial moves and can't forget any until have all 4 slots used
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// If it has learn a move before having 4 it will be in one of the free slots
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int required = GetRequiredMoveSlotsRegular(pk, moves, learn, initialmoves);
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return required != 0 ? required : GetRequiredMoveCountDecrement(pk, moves, learn, initialmoves);
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}
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private static int GetRequiredMoveSlotsRegular(PKM pk, IReadOnlyList<int> moves, IReadOnlyList<int>[] learn, IReadOnlyList<int> initialmoves)
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{
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int species = pk.Species;
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int catch_rate = ((PK1)pk).Catch_Rate;
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// Caterpie and Metapod evolution lines have different count of possible slots available if captured in different evolutionary phases
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// Example: a level 7 caterpie evolved into metapod will have 3 learned moves, a captured metapod will have only 1 move
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if ((species == (int)Species.Metapod || species == (int)Species.Butterfree) && catch_rate == 120)
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{
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// Captured as Metapod without Caterpie moves
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return initialmoves.Union(learn[1]).Distinct().Count(lm => lm != 0 && !G1CaterpieMoves.Contains(lm));
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// There is no valid Butterfree encounter in generation 1 games
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}
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if ((species == (int)Species.Kakuna || species == (int)Species.Beedrill) && (catch_rate == 45 || catch_rate == 120))
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{
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if (species == (int)Species.Beedrill && catch_rate == 45) // Captured as Beedril without Weedle and Kakuna moves
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return initialmoves.Union(learn[1]).Distinct().Count(lm => lm != 0 && !G1KakunaMoves.Contains(lm));
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// Captured as Kakuna without Weedle moves
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return initialmoves.Union(learn[1]).Distinct().Count(lm => lm != 0 && !G1WeedleMoves.Contains(lm));
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}
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return IsMoveCountRequired3(species, pk.CurrentLevel, moves) ? 3 : 0; // no match
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}
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private static bool IsMoveCountRequired3(int species, int level, IReadOnlyList<int> moves)
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{
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// Species that evolve and learn the 4th move as evolved species at a greather level than base species
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// The 4th move is included in the level up table set as a preevolution move,
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// it should be removed from the used slots count if is not the learn move
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switch (species)
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{
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case (int)Species.Pidgeotto: return level < 21 && !moves.Contains(018); // Pidgeotto without Whirlwind
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case (int)Species.Sandslash: return level < 27 && !moves.Contains(040); // Sandslash without Poison Sting
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case (int)Species.Parasect: return level < 30 && !moves.Contains(147); // Parasect without Spore
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case (int)Species.Golduck: return level < 39 && !moves.Contains(093); // Golduck without Confusion
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case (int)Species.Dewgong: return level < 44 && !moves.Contains(156); // Dewgong without Rest
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case (int)Species.Haunter:
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case (int)Species.Gengar: return level < 29 && !moves.Contains(095); // Haunter/Gengar without Hypnosis
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case (int)Species.Weezing: return level < 39 && !moves.Contains(108); // Weezing without Smoke Screen
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default: return false;
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}
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}
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private static int GetRequiredMoveCountDecrement(PKM pk, IReadOnlyList<int> moves, IReadOnlyList<int>[] learn, IReadOnlyList<int> initialmoves)
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{
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int usedslots = initialmoves.Union(learn[1]).Where(m => m != 0).Distinct().Count();
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switch (pk.Species)
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{
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case (int)Species.Venonat: // Venonat; ignore Venomoth (by the time Venonat evolves it will always have 4 moves)
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if (pk.CurrentLevel >= 11 && !moves.Contains(48)) // Supersonic
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usedslots--;
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if (pk.CurrentLevel >= 19 && !moves.Contains(93)) // Confusion
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usedslots--;
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break;
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case (int)Species.Kadabra:
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case (int)Species.Alakazam: // Abra & Kadabra
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int catch_rate = ((PK1)pk).Catch_Rate;
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if (catch_rate != 100)// Initial Yellow Kadabra Kinesis (move 134)
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usedslots--;
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if (catch_rate == 200 && pk.CurrentLevel < 20) // Kadabra Disable, not learned until 20 if captured as Abra (move 50)
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usedslots--;
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break;
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case (int)Species.Cubone:
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case (int)Species.Marowak: // Cubone & Marowak
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if (!moves.Contains(39)) // Initial Yellow Tail Whip
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usedslots--;
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if (!moves.Contains(125)) // Initial Yellow Bone Club
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usedslots--;
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if (pk.Species == 105 && pk.CurrentLevel < 33 && !moves.Contains(116)) // Marowak evolved without Focus Energy
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usedslots--;
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break;
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case (int)Species.Chansey:
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if (!moves.Contains(39)) // Yellow Initial Tail Whip
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usedslots--;
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if (!moves.Contains(3)) // Yellow Lvl 12 and Initial Red/Blue Double Slap
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usedslots--;
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break;
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case (int)Species.Mankey when pk.CurrentLevel >= 9 && !moves.Contains(67): // Mankey (Low Kick)
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case (int)Species.Pinsir when pk.CurrentLevel >= 21 && !moves.Contains(20): // Pinsir (Bind)
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case (int)Species.Gyarados when pk.CurrentLevel < 32: // Gyarados
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usedslots--;
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break;
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default: return usedslots;
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}
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return usedslots;
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}
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private static int GetRequiredMoveCountSpecial(PKM pk, IReadOnlyList<int> moves, IReadOnlyList<int>[] learn)
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{
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// Species with few mandatory slots, species with stone evolutions that could evolve at lower level and do not learn any more moves
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// and Pikachu and Nidoran family, those only have mandatory the initial moves and a few have one level up moves,
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// every other move could be avoided switching game or evolving
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var mandatory = GetRequiredMoveCountLevel(pk);
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switch (pk.Species)
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{
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case (int)Species.Exeggutor when pk.CurrentLevel >= 28: // Exeggutor
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// At level 28 learn different move if is a Exeggute or Exeggutor
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if (moves.Contains(73))
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mandatory.Add(73); // Leech Seed level 28 Exeggute
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if (moves.Contains(23))
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mandatory.Add(23); // Stomp level 28 Exeggutor
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break;
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case (int)Species.Pikachu when pk.CurrentLevel >= 33:
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mandatory.Add(97); // Pikachu always learns Agility
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break;
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case (int)Species.Tangela:
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mandatory.Add(132); // Tangela always has Constrict as Initial Move
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break;
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}
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// Add to used slots the non-mandatory moves from the learnset table that the pokemon have learned
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return mandatory.Count + moves.Where(m => m != 0).Count(m => !mandatory.Contains(m) && learn[1].Contains(m));
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}
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private static List<int> GetRequiredMoveCountLevel(PKM pk)
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{
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int species = pk.Species;
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int basespecies = GetBaseSpecies(pk).Species;
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int maxlevel = 1;
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int minlevel = 1;
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if (species == (int)Species.Tangela) // Tangela moves before level 32 are different in RB vs Y
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{
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minlevel = 32;
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maxlevel = pk.CurrentLevel;
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}
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else if ((int)Species.NidoranF <= species && species <= (int)Species.Nidoking && pk.CurrentLevel >= 8)
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{
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maxlevel = 8; // Always learns a third move at level 8
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}
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if (minlevel > pk.CurrentLevel)
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return new List<int>();
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return MoveLevelUp.GetMovesLevelUp1(basespecies, 0, maxlevel, minlevel);
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}
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internal static IEnumerable<GameVersion> GetGen2Versions(LegalInfo Info, bool korean)
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{
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if (ParseSettings.AllowGen2Crystal(korean) && Info.Game.Contains(GameVersion.C))
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yield return GameVersion.C;
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yield return GameVersion.GS;
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}
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internal static IEnumerable<GameVersion> GetGen1Versions(LegalInfo Info)
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{
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if (Info.EncounterMatch.Species == (int)Species.Eevee && Info.Game == GameVersion.Stadium)
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{
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// Stadium Eevee; check for RB and yellow initial moves
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yield return GameVersion.RB;
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yield return GameVersion.YW;
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yield break;
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}
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if (Info.Game == GameVersion.YW)
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{
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yield return GameVersion.YW;
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yield break;
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}
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// Any encounter marked with version RBY is for pokemon with the same moves and catch rate in RB and Y,
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// it is sufficient to check just RB's case
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yield return GameVersion.RB;
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}
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private static bool GetCatchRateMatchesPreEvolution(PKM pkm, int catch_rate, IEnumerable<int> gen1)
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{
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// For species catch rate, discard any species that has no valid encounters and a different catch rate than their pre-evolutions
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var Lineage = gen1.Except(Species_NotAvailable_CatchRate);
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return IsCatchRateRBY(Lineage) || IsCatchRateTrade() || IsCatchRateStadium();
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// Dragonite's Catch Rate is different than Dragonair's in Yellow, but there is no Dragonite encounter.
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bool IsCatchRateRBY(IEnumerable<int> ds) => ds.Any(s => catch_rate == PersonalTable.RB[s].CatchRate || (s != 149 && catch_rate == PersonalTable.Y[s].CatchRate));
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// Krabby encounter trade special catch rate
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bool IsCatchRateTrade() => catch_rate == 204 && (pkm.Species == (int)Species.Krabby || pkm.Species == (int)Species.Kingler);
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bool IsCatchRateStadium() => Stadium_GiftSpecies.Contains(pkm.Species) && Stadium_CatchRate.Contains(catch_rate);
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}
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/// <summary>
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/// Checks if the <see cref="pkm"/> can inhabit <see cref="GameVersion.Gen1"></see>
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/// </summary>
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/// <param name="pkm">Data to check</param>
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/// <returns>true if can inhabit, false if not.</returns>
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private static bool CanInhabitGen1(this PKM pkm)
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{
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// Korean Gen2 games can't tradeback because there are no Gen1 Korean games released
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if (pkm.Korean || pkm.IsEgg)
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return false;
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if (pkm is PK2 pk2 && pk2.CaughtData != 0)
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return false;
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int species = pkm.Species;
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if (species <= MaxSpeciesID_1)
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return true;
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return FutureEvolutionsGen1.Contains(species);
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}
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/// <summary>
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/// Gets the Tradeback status depending on various values.
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/// </summary>
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/// <param name="pkm">Pokémon to guess the tradeback status from.</param>
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internal static TradebackType GetTradebackStatusInitial(PKM pkm)
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{
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if (pkm is PK1 pk1)
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return GetTradebackStatusRBY(pk1);
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if (pkm.Format == 2 || pkm.VC2) // Check for impossible tradeback scenarios
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return !pkm.CanInhabitGen1() ? TradebackType.Gen2_NotTradeback : TradebackType.Any;
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// VC2 is released, we can assume it will be TradebackType.Any.
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// Is impossible to differentiate a VC1 pokemon traded to Gen7 after VC2 is available.
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// Met Date cannot be used definitively as the player can change their system clock.
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return TradebackType.Any;
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}
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/// <summary>
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/// Gets the Tradeback status depending on the <see cref="PK1.Catch_Rate"/>
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/// </summary>
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/// <param name="pkm">Pokémon to guess the tradeback status from.</param>
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private static TradebackType GetTradebackStatusRBY(PK1 pkm)
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{
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if (!ParseSettings.AllowGen1Tradeback)
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return TradebackType.Gen1_NotTradeback;
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// Detect tradeback status by comparing the catch rate(Gen1)/held item(Gen2) to the species in the pkm's evolution chain.
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var catch_rate = pkm.Catch_Rate;
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|
if (catch_rate == 0)
|
|
return TradebackType.WasTradeback;
|
|
|
|
var table = EvolutionTree.GetEvolutionTree(1);
|
|
var lineage = table.GetValidPreEvolutions(pkm, maxLevel: pkm.CurrentLevel);
|
|
var gen1 = lineage.Select(evolution => evolution.Species);
|
|
bool matchAny = GetCatchRateMatchesPreEvolution(pkm, catch_rate, gen1);
|
|
|
|
if (!matchAny)
|
|
return TradebackType.WasTradeback;
|
|
|
|
if (catch_rate == 0 || HeldItems_GSC.Contains((ushort)catch_rate))
|
|
return TradebackType.Any;
|
|
|
|
return TradebackType.Gen1_NotTradeback;
|
|
}
|
|
|
|
internal static bool IsTradedKadabraG1(PKM pkm)
|
|
{
|
|
if (!(pkm is PK1 pk1) || pk1.Species != (int)Species.Kadabra)
|
|
return false;
|
|
if (pk1.TradebackStatus == TradebackType.WasTradeback)
|
|
return true;
|
|
if (ParseSettings.ActiveTrainer.Game == (int)GameVersion.Any)
|
|
return false;
|
|
var IsYellow = ParseSettings.ActiveTrainer.Game == (int)GameVersion.YW;
|
|
if (pk1.TradebackStatus == TradebackType.Gen1_NotTradeback)
|
|
{
|
|
// If catch rate is Abra catch rate it wont trigger as invalid trade without evolution, it could be traded as Abra
|
|
// Yellow Kadabra catch rate in Red/Blue game, must be Alakazam
|
|
var table = IsYellow ? PersonalTable.RB : PersonalTable.Y;
|
|
if (pk1.Catch_Rate == table[(int)Species.Kadabra].CatchRate)
|
|
return true;
|
|
}
|
|
if (IsYellow)
|
|
return false;
|
|
// Yellow only moves in Red/Blue game, must be Alakazam
|
|
var moves = pk1.Moves;
|
|
if (moves.Contains(134)) // Kinesis, yellow only move
|
|
return true;
|
|
if (pk1.CurrentLevel < 20 && moves.Contains(50)) // Obtaining Disable below level 20 implies a yellow only move
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
}
|
|
}
|