PKHeX/PKHeX.Core/Legality/Areas/EncounterArea7b.cs
Kurt 3c232505e5
Refactoring: Narrow some value types (Species, Move, Form) (#3575)
In this pull request I've changed a ton of method signatures to reflect the more-narrow types of Species, Move# and Form; additionally, I've narrowed other large collections that stored lists of species / permitted values, and reworked them to be more performant with the latest API spaghetti that PKHeX provides. Roamer met locations, usually in a range of [max-min]<64, can be quickly checked using a bitflag operation on a UInt64. Other collections (like "Is this from Colosseum or XD") were eliminated -- shadow state is not transferred COLO<->XD, so having a Shadow ID or matching the met location from a gift/wild encounter is a sufficient check for "originated in XD".
2022-08-26 23:43:36 -07:00

77 lines
2.2 KiB
C#

using System;
using System.Collections.Generic;
using static System.Buffers.Binary.BinaryPrimitives;
namespace PKHeX.Core;
/// <inheritdoc cref="EncounterArea" />
/// <summary>
/// <see cref="GameVersion.GG"/> encounter area
/// </summary>
public sealed record EncounterArea7b : EncounterArea
{
public readonly EncounterSlot7b[] Slots;
protected override IReadOnlyList<EncounterSlot> Raw => Slots;
public static EncounterArea7b[] GetAreas(BinLinkerAccessor input, GameVersion game)
{
var result = new EncounterArea7b[input.Length];
for (int i = 0; i < result.Length; i++)
result[i] = new EncounterArea7b(input[i], game);
return result;
}
private EncounterArea7b(ReadOnlySpan<byte> data, GameVersion game) : base(game)
{
Location = ReadInt16LittleEndian(data);
Slots = ReadSlots(data);
}
private EncounterSlot7b[] ReadSlots(ReadOnlySpan<byte> data)
{
const int size = 4;
int count = (data.Length - 2) / size;
var slots = new EncounterSlot7b[count];
for (int i = 0; i < slots.Length; i++)
{
int offset = 2 + (size * i);
var entry = data.Slice(offset, size);
slots[i] = ReadSlot(entry);
}
return slots;
}
private EncounterSlot7b ReadSlot(ReadOnlySpan<byte> entry)
{
ushort species = entry[0]; // always < 255; only original 151
// form is always 0
byte min = entry[2];
byte max = entry[3];
return new EncounterSlot7b(this, species, min, max);
}
private const int CatchComboBonus = 1;
public override IEnumerable<EncounterSlot> GetMatchingSlots(PKM pk, EvoCriteria[] chain)
{
foreach (var slot in Slots)
{
foreach (var evo in chain)
{
if (slot.Species != evo.Species)
continue;
var met = pk.Met_Level;
if (!slot.IsLevelWithinRange(met, 0, CatchComboBonus))
break;
if (slot.Form != evo.Form)
break;
yield return slot;
break;
}
}
}
}