PKHeX/PKHeX.Core/Legality/Areas/EncounterArea8b.cs

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using System;
using System.Collections.Generic;
namespace PKHeX.Core
{
/// <inheritdoc cref="EncounterArea" />
/// <summary>
/// <see cref="GameVersion.BDSP"/> encounter area
/// </summary>
public sealed record EncounterArea8b : EncounterArea
{
public readonly EncounterSlot8b[] Slots;
protected override IReadOnlyList<EncounterSlot> Raw => Slots;
public static EncounterArea8b[] GetAreas(byte[][] input, GameVersion game)
{
var result = new EncounterArea8b[input.Length];
for (int i = 0; i < input.Length; i++)
result[i] = new EncounterArea8b(input[i], game);
return result;
}
private EncounterArea8b(byte[] data, GameVersion game) : base(game)
{
Location = data[0] | (data[1] << 8);
Type = (SlotType)data[2];
Slots = ReadSlots(data);
}
private EncounterSlot8b[] ReadSlots(byte[] data)
{
const int size = 4;
int count = (data.Length - 4) / size;
var slots = new EncounterSlot8b[count];
for (int i = 0; i < slots.Length; i++)
{
int offset = 4 + (size * i);
ushort SpecForm = BitConverter.ToUInt16(data, offset);
int species = SpecForm & 0x3FF;
int form = SpecForm >> 11;
int min = data[offset + 2];
int max = data[offset + 3];
slots[i] = new EncounterSlot8b(this, species, form, min, max);
}
return slots;
}
public override IEnumerable<EncounterSlot> GetMatchingSlots(PKM pkm, IReadOnlyList<EvoCriteria> chain)
{
foreach (var slot in Slots)
{
foreach (var evo in chain)
{
if (slot.Species != evo.Species)
continue;
if (!slot.IsLevelWithinRange(pkm.Met_Level))
break;
if (slot.Form != evo.Form && slot.Species is not (int)Species.Burmy)
break;
yield return slot;
break;
}
}
}
}
}