using System; using System.Collections.Generic; using static System.Buffers.Binary.BinaryPrimitives; namespace PKHeX.Core { /// /// /// encounter area for direct-to-HOME transfers. /// public sealed record EncounterArea8g : EncounterArea, ISpeciesForm { /// Species for the area /// Due to how the encounter data is packaged by PKHeX, each species-form is grouped together. public int Species { get; } /// Form of the Species public int Form { get; } public readonly EncounterSlot8GO[] Slots; protected override IReadOnlyList Raw => Slots; private EncounterArea8g(ushort species, byte form, EncounterSlot8GO[] slots) : base(GameVersion.GO) { Species = species; Form = form; Location = Locations.GO8; Slots = slots; } internal static EncounterArea8g[] GetArea(BinLinkerAccessor data) { var areas = new EncounterArea8g[data.Length]; for (int i = 0; i < areas.Length; i++) areas[i] = GetArea(data[i]); return areas; } private const int entrySize = (2 * sizeof(int)) + 2; private static EncounterArea8g GetArea(ReadOnlySpan data) { var species = ReadUInt16LittleEndian(data); byte form = (byte)(species >> 11); species &= 0x3FF; var group = GetGroup(species, form); var result = new EncounterSlot8GO[(data.Length - 2) / entrySize]; var area = new EncounterArea8g(species, form, result); for (int i = 0; i < result.Length; i++) { var offset = (i * entrySize) + 2; var entry = data.Slice(offset, entrySize); result[i] = ReadSlot(entry, area, species, form, group); } return area; } private static EncounterSlot8GO ReadSlot(ReadOnlySpan entry, EncounterArea8g area, ushort species, byte form, GameVersion group) { int start = ReadInt32LittleEndian(entry); int end = ReadInt32LittleEndian(entry[4..]); var sg = entry[8]; var shiny = (Shiny)(sg & 0x3F); var gender = (Gender)(sg >> 6); var type = (PogoType)entry[9]; return new EncounterSlot8GO(area, species, form, start, end, shiny, gender, type, group); } private static GameVersion GetGroup(int species, int form) { // Transfer Rules: // If it can exist in LGP/E, it uses LGP/E's move data for the initial moves. // Else, if it can exist in SW/SH, it uses SW/SH's move data for the initial moves. // Else, it must exist in US/UM, thus it uses US/UM's moves. var pt8 = PersonalTable.SWSH; var ptGG = PersonalTable.GG; var pi8 = (PersonalInfoSWSH)pt8[species]; if (pi8.IsPresentInGame) { bool lgpe = (species is (<= 151 or 808 or 809)) && (form == 0 || ptGG[species].HasForm(form)); return lgpe ? GameVersion.GG : GameVersion.SWSH; } if (species <= Legal.MaxSpeciesID_7_USUM) { bool lgpe = species <= 151 && (form == 0 || ptGG[species].HasForm(form)); return lgpe ? GameVersion.GG : GameVersion.USUM; } throw new ArgumentOutOfRangeException(nameof(species)); } public override IEnumerable GetMatchingSlots(PKM pkm, EvoCriteria[] chain) { if (pkm.TSV == 0) // HOME doesn't assign TSV=0 to accounts. yield break; // Find the first chain that has slots defined. // Since it is possible to evolve before transferring, we only need the highest evolution species possible. // PoGoEncTool has already extrapolated the evolutions to separate encounters! var sf = Array.Find(chain, z => z.Species == Species && (z.Form == Form || FormInfo.IsFormChangeable(Species, Form, z.Form, pkm.Format))); if (sf == default) yield break; var species = pkm.Species; var ball = (Ball)pkm.Ball; var met = Math.Max(sf.LevelMin, pkm.Met_Level); EncounterSlot8GO? deferredIV = null; foreach (var slot in Slots) { if (!slot.IsLevelWithinRange(met)) continue; if (!slot.IsBallValid(ball, species)) continue; if (!slot.Shiny.IsValid(pkm)) continue; if (slot.Gender != Gender.Random && (int)slot.Gender != pkm.Gender) continue; if (!slot.GetIVsValid(pkm)) { deferredIV ??= slot; continue; } yield return slot; } if (deferredIV != null) yield return deferredIV; } } }