PKHeX/PKHeX.Core/PKM/PK1.cs
Kurt 95fbf66a6e
Refactor: Gen3/4 Lead Encounters, property fixing (#4193)
In addition to the Method 1 (and other sibling PIDIV types) correlation, an encounter can only be triggered if the calls prior land on the Method {1} seed. The RNG community has dubbed these patterns as "Method J" (D/P/Pt), "Method K" (HG/SS), and "Method H" (Gen3, coined by yours truly). The basic gist of these is that they are pre-requisites, like the Shadow locks of Colosseum/XD. 

Rename/re-type a bunch of properties to get the codebase more in line with correct property names & more obvious underlying types.
2024-02-22 21:20:54 -06:00

242 lines
12 KiB
C#

using System;
using static System.Buffers.Binary.BinaryPrimitives;
namespace PKHeX.Core;
/// <summary> Generation 1 <see cref="PKM"/> format. </summary>
public sealed class PK1 : GBPKML, IPersonalType
{
public override PersonalInfo1 PersonalInfo => PersonalTable.Y[Species];
public override bool Valid => Species <= 151 && (Data[0] == 0 || Species != 0);
public override int SIZE_PARTY => PokeCrypto.SIZE_1PARTY;
public override int SIZE_STORED => PokeCrypto.SIZE_1STORED;
public override bool Korean => false;
public override EntityContext Context => EntityContext.Gen1;
public PK1(bool jp = false) : base(PokeCrypto.SIZE_1PARTY, jp) { }
public PK1(byte[] decryptedData, bool jp = false) : base(EnsurePartySize(decryptedData), jp) { }
private static byte[] EnsurePartySize(byte[] data)
{
if (data.Length != PokeCrypto.SIZE_1PARTY)
Array.Resize(ref data, PokeCrypto.SIZE_1PARTY);
return data;
}
public override PK1 Clone()
{
PK1 clone = new((byte[])Data.Clone(), Japanese);
OriginalTrainerTrash.CopyTo(clone.OriginalTrainerTrash);
NicknameTrash.CopyTo(clone.NicknameTrash);
return clone;
}
protected override byte[] Encrypt() => new PokeList1(this).Write();
#region Stored Attributes
public byte SpeciesInternal { get => Data[0]; set => Data[0] = value; } // raw access
public override ushort Species { get => SpeciesConverter.GetNational1(SpeciesInternal); set => SetSpeciesValues(value); }
public override int Stat_HPCurrent { get => ReadUInt16BigEndian(Data.AsSpan(0x1)); set => WriteUInt16BigEndian(Data.AsSpan(0x1), (ushort)value); }
public int Stat_LevelBox { get => Data[3]; set => Data[3] = (byte)value; }
public override int Status_Condition { get => Data[4]; set => Data[4] = (byte)value; }
public byte Type1 { get => Data[5]; set => Data[5] = value; }
public byte Type2 { get => Data[6]; set => Data[6] = value; }
public byte CatchRate { get => Data[7]; set => Data[7] = value; }
public override ushort Move1 { get => Data[8]; set => Data[8] = (byte)value; }
public override ushort Move2 { get => Data[9]; set => Data[9] = (byte)value; }
public override ushort Move3 { get => Data[10]; set => Data[10] = (byte)value; }
public override ushort Move4 { get => Data[11]; set => Data[11] = (byte)value; }
public override ushort TID16 { get => ReadUInt16BigEndian(Data.AsSpan(0xC)); set => WriteUInt16BigEndian(Data.AsSpan(0xC), value); }
public override uint EXP { get => ReadUInt32BigEndian(Data.AsSpan(0xE)) >> 8; set => WriteUInt32BigEndian(Data.AsSpan(0xE), (value << 8) | Data[0x11]); }
public override int EV_HP { get => ReadUInt16BigEndian(Data.AsSpan(0x11)); set => WriteUInt16BigEndian(Data.AsSpan(0x11), (ushort)value); }
public override int EV_ATK { get => ReadUInt16BigEndian(Data.AsSpan(0x13)); set => WriteUInt16BigEndian(Data.AsSpan(0x13), (ushort)value); }
public override int EV_DEF { get => ReadUInt16BigEndian(Data.AsSpan(0x15)); set => WriteUInt16BigEndian(Data.AsSpan(0x15), (ushort)value); }
public override int EV_SPE { get => ReadUInt16BigEndian(Data.AsSpan(0x17)); set => WriteUInt16BigEndian(Data.AsSpan(0x17), (ushort)value); }
public override int EV_SPC { get => ReadUInt16BigEndian(Data.AsSpan(0x19)); set => WriteUInt16BigEndian(Data.AsSpan(0x19), (ushort)value); }
public override ushort DV16 { get => ReadUInt16BigEndian(Data.AsSpan(0x1B)); set => WriteUInt16BigEndian(Data.AsSpan(0x1B), value); }
public override int Move1_PP { get => Data[0x1D] & 0x3F; set => Data[0x1D] = (byte)((Data[0x1D] & 0xC0) | Math.Min(63, value)); }
public override int Move2_PP { get => Data[0x1E] & 0x3F; set => Data[0x1E] = (byte)((Data[0x1E] & 0xC0) | Math.Min(63, value)); }
public override int Move3_PP { get => Data[0x1F] & 0x3F; set => Data[0x1F] = (byte)((Data[0x1F] & 0xC0) | Math.Min(63, value)); }
public override int Move4_PP { get => Data[0x20] & 0x3F; set => Data[0x20] = (byte)((Data[0x20] & 0xC0) | Math.Min(63, value)); }
public override int Move1_PPUps { get => (Data[0x1D] & 0xC0) >> 6; set => Data[0x1D] = (byte)((Data[0x1D] & 0x3F) | ((value & 0x3) << 6)); }
public override int Move2_PPUps { get => (Data[0x1E] & 0xC0) >> 6; set => Data[0x1E] = (byte)((Data[0x1E] & 0x3F) | ((value & 0x3) << 6)); }
public override int Move3_PPUps { get => (Data[0x1F] & 0xC0) >> 6; set => Data[0x1F] = (byte)((Data[0x1F] & 0x3F) | ((value & 0x3) << 6)); }
public override int Move4_PPUps { get => (Data[0x20] & 0xC0) >> 6; set => Data[0x20] = (byte)((Data[0x20] & 0x3F) | ((value & 0x3) << 6)); }
#endregion
#region Party Attributes
public override byte Stat_Level { get => Data[0x21]; set => Stat_LevelBox = Data[0x21] = value; }
public override int Stat_HPMax { get => ReadUInt16BigEndian(Data.AsSpan(0x22)); set => WriteUInt16BigEndian(Data.AsSpan(0x22), (ushort)value); }
public override int Stat_ATK { get => ReadUInt16BigEndian(Data.AsSpan(0x24)); set => WriteUInt16BigEndian(Data.AsSpan(0x24), (ushort)value); }
public override int Stat_DEF { get => ReadUInt16BigEndian(Data.AsSpan(0x26)); set => WriteUInt16BigEndian(Data.AsSpan(0x26), (ushort)value); }
public override int Stat_SPE { get => ReadUInt16BigEndian(Data.AsSpan(0x28)); set => WriteUInt16BigEndian(Data.AsSpan(0x28), (ushort)value); }
public int Stat_SPC { get => ReadUInt16BigEndian(Data.AsSpan(0x2A)); set => WriteUInt16BigEndian(Data.AsSpan(0x2A), (ushort)value); }
// Leave SPA and SPD as alias for SPC
public override int Stat_SPA { get => Stat_SPC; set => Stat_SPC = value; }
public override int Stat_SPD { get => Stat_SPC; set { } }
#endregion
public static bool IsCatchRateHeldItem(byte rate) => rate == 0 || Array.IndexOf(Legal.HeldItems_GSC, rate) >= 0;
private static bool IsCatchRatePreEvolutionRate(int baseSpecies, int finalSpecies, byte rate)
{
for (int species = baseSpecies; species <= finalSpecies; species++)
{
if (rate == PersonalTable.RB[species].CatchRate || rate == PersonalTable.Y[species].CatchRate)
return true;
}
return false;
}
private void SetSpeciesValues(ushort species)
{
var internalID = SpeciesConverter.GetInternal1(species);
if (SpeciesInternal == internalID)
return;
SpeciesInternal = internalID;
var pi = PersonalTable.RB[species];
Type1 = pi.Type1;
Type2 = pi.Type2;
// Before updating catch rate, check if non-standard
if (IsValidCatchRateAnyPreEvo((byte)species, CatchRate))
return;
// Matches nothing possible; just reset to current Species' rate.
CatchRate = pi.CatchRate;
}
private static bool IsValidCatchRateAnyPreEvo(byte species, byte rate)
{
if (IsCatchRateHeldItem(rate))
return true;
if (species == (int)Core.Species.Pikachu && rate == 0xA3) // Light Ball (starter)
return true;
// Get de-evolution steps we should check for.
var stage = PersonalInfo1.GetEvolutionStage(species);
// For Eevee-lutions, Eevee evolves to (134,135,136), which are (1,1,1). All 3 have the same catch rate as Eevee.
// In the event the current species is 135 or 136, we'd never check Eevee with this logic, but they're all 45.
var baby = species - stage;
return IsCatchRatePreEvolutionRate(baby, species, rate);
}
public override GameVersion Version { get => GameVersion.RBY; set { } }
public override int PokerusStrain { get => 0; set { } }
public override int PokerusDays { get => 0; set { } }
public override bool CanHoldItem(ReadOnlySpan<ushort> valid) => false;
public override ushort MetLocation { get => 0; set { } }
public override byte OriginalTrainerGender { get => 0; set { } }
public override byte MetLevel { get => 0; set { } }
public override byte CurrentFriendship { get => 0; set { } }
public override bool IsEgg { get => false; set { } }
public override int HeldItem { get => 0; set { } }
public override byte OriginalTrainerFriendship { get => 0; set { } }
// Maximums
public override ushort MaxMoveID => Legal.MaxMoveID_1;
public override ushort MaxSpeciesID => Legal.MaxSpeciesID_1;
public override int MaxAbilityID => Legal.MaxAbilityID_1;
public override int MaxItemID => Legal.MaxItemID_1;
// Extra
public byte Gen2Item => ItemConverter.GetItemFuture1(CatchRate);
public PK2 ConvertToPK2()
{
PK2 pk2 = new(Japanese) {Species = Species};
Data.AsSpan(7, 0x1A).CopyTo(pk2.Data.AsSpan(1));
OriginalTrainerTrash.CopyTo(pk2.OriginalTrainerTrash);
NicknameTrash.CopyTo(pk2.NicknameTrash);
pk2.HeldItem = Gen2Item;
pk2.CurrentFriendship = pk2.PersonalInfo.BaseFriendship;
pk2.Stat_Level = CurrentLevel;
return pk2;
}
public PK7 ConvertToPK7()
{
var rnd = Util.Rand;
var lang = TransferLanguage(RecentTrainerCache.Language);
var version = EntityConverter.VirtualConsoleSourceGen1;
if ((lang == 1) != Japanese)
lang = Japanese ? 1 : 2;
if (version == GameVersion.BU && !Japanese)
version = GameVersion.RD;
var pi = PersonalTable.SM[Species];
int ability = TransporterLogic.IsHiddenDisallowedVC1(Species) ? 0 : 2; // Hidden
var pk7 = new PK7
{
EncryptionConstant = rnd.Rand32(),
Species = Species,
TID16 = TID16,
CurrentLevel = CurrentLevel,
EXP = EXP,
MetLevel = CurrentLevel,
Nature = Experience.GetNatureVC(EXP),
PID = rnd.Rand32(),
Ball = 4,
MetDate = EncounterDate.GetDate3DS(),
Version = version,
Move1 = Move1,
Move2 = Move2,
Move3 = Move3,
Move4 = Move4,
Move1_PPUps = Move1_PPUps,
Move2_PPUps = Move2_PPUps,
Move3_PPUps = Move3_PPUps,
Move4_PPUps = Move4_PPUps,
MetLocation = Locations.Transfer1, // "Kanto region", hardcoded.
Gender = Gender,
IsNicknamed = false,
CurrentHandler = 1,
HandlingTrainerName = RecentTrainerCache.OriginalTrainerName,
HandlingTrainerGender = RecentTrainerCache.OriginalTrainerGender,
Language = lang,
Nickname = SpeciesName.GetSpeciesNameGeneration(Species, lang, 7),
OriginalTrainerName = GetTransferTrainerName(lang),
OriginalTrainerFriendship = pi.BaseFriendship,
HandlingTrainerFriendship = pi.BaseFriendship,
Ability = pi.GetAbilityAtIndex(ability),
AbilityNumber = 1 << ability,
};
bool special = Species == (int)Core.Species.Mew;
int flawless = special ? 5 : 3;
pk7.SetTransferIVs(flawless, rnd);
pk7.SetTransferPID(IsShiny);
pk7.SetTransferLocale(lang);
if (special) // Mew gets special treatment.
{
pk7.FatefulEncounter = true;
}
else if (IsNicknamedBank)
{
pk7.IsNicknamed = true;
pk7.Nickname = StringConverter12Transporter.GetString(NicknameTrash, Japanese);
}
pk7.HealPP();
pk7.RefreshChecksum();
return pk7;
}
private string GetTransferTrainerName(int lang)
{
if (OriginalTrainerTrash[0] == StringConverter12.G1TradeOTCode) // In-game Trade
return StringConverter12Transporter.GetTradeNameGen1(lang);
return StringConverter12Transporter.GetString(OriginalTrainerTrash, Japanese);
}
}