PKHeX/PKHeX.Core/Legality/Areas/EncounterArea6AO.cs

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using System.Collections.Generic;
namespace PKHeX.Core
{
/// <inheritdoc />
/// <summary>
/// <see cref="GameVersion.ORAS"/> encounter area
/// </summary>
public sealed class EncounterArea6AO : EncounterArea32
{
private const int FluteBoostMin = 4; // White Flute decreases levels.
private const int FluteBoostMax = 4; // Black Flute increases levels.
private const int DexNavBoost = 30; // Maximum DexNav chain
private const int RandomForm = 31;
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;
var boostMax = slot.Type != SlotType.Rock_Smash ? DexNavBoost : FluteBoostMax;
const int boostMin = FluteBoostMin;
if (!slot.IsLevelWithinRange(pkm.Met_Level, boostMin, boostMax))
break;
if (slot.Form != evo.Form && slot.Form != RandomForm)
break;
var clone = (EncounterSlot6AO)slot.Clone();
MarkSlotDetails(pkm, clone, evo);
yield return clone;
break;
}
}
}
private static void MarkSlotDetails(PKM pkm, EncounterSlot6AO slot, EvoCriteria evo)
{
bool nav = slot.AllowDexNav && (pkm.RelearnMove1 != 0 || pkm.AbilityNumber == 4);
slot.DexNav = nav;
if (slot.LevelMin > evo.MinLevel)
slot.WhiteFlute = true;
if (slot.LevelMax + 1 <= evo.MinLevel && evo.MinLevel <= slot.LevelMax + FluteBoostMax)
slot.BlackFlute = true;
if (slot.LevelMax != evo.MinLevel && slot.AllowDexNav)
slot.DexNav = true;
}
}
}