mirror of
https://github.com/kwsch/PKHeX
synced 2024-12-27 12:53:14 +00:00
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)
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return TradebackType.WasTradeback;
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var table = EvolutionTree.GetEvolutionTree(1);
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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 (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;
|
|
}
|
|
}
|
|
}
|