2020-08-30 17:23:22 +00:00
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using System;
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using System.Collections.Generic;
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2022-01-03 05:35:59 +00:00
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using static System.Buffers.Binary.BinaryPrimitives;
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2020-08-30 17:23:22 +00:00
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2022-06-18 18:04:24 +00:00
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namespace PKHeX.Core;
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/// <inheritdoc cref="EncounterArea" />
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/// <summary>
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/// <see cref="GameVersion.Gen5"/> encounter area
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/// </summary>
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public sealed record EncounterArea5 : EncounterArea
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2019-09-13 06:20:52 +00:00
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{
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public readonly EncounterSlot5[] Slots;
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2021-06-30 03:58:06 +00:00
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2022-06-18 18:04:24 +00:00
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protected override IReadOnlyList<EncounterSlot> Raw => Slots;
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public static EncounterArea5[] GetAreas(BinLinkerAccessor input, GameVersion game)
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{
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var result = new EncounterArea5[input.Length];
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for (int i = 0; i < result.Length; i++)
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result[i] = new EncounterArea5(input[i], game);
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return result;
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}
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2022-06-18 18:04:24 +00:00
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private EncounterArea5(ReadOnlySpan<byte> data, GameVersion game) : base(game)
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{
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Location = ReadUInt16LittleEndian(data);
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Type = (SlotType)data[2];
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Slots = ReadSlots(data);
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}
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private EncounterSlot5[] ReadSlots(ReadOnlySpan<byte> data)
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{
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const int size = 4;
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int count = (data.Length - 4) / size;
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var slots = new EncounterSlot5[count];
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for (int i = 0; i < slots.Length; i++)
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{
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int offset = 4 + (size * i);
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var entry = data.Slice(offset, size);
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slots[i] = ReadSlot(entry);
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2020-08-30 17:23:22 +00:00
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}
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2022-06-18 18:04:24 +00:00
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return slots;
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}
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private EncounterSlot5 ReadSlot(ReadOnlySpan<byte> entry)
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{
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ushort species = ReadUInt16LittleEndian(entry);
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byte form = (byte)(species >> 11);
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species &= 0x3FF;
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byte min = entry[2];
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byte max = entry[3];
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return new EncounterSlot5(this, species, form, min, max);
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}
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public override IEnumerable<EncounterSlot> GetMatchingSlots(PKM pk, EvoCriteria[] chain)
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{
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foreach (var slot in Slots)
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2020-08-30 17:23:22 +00:00
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{
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foreach (var evo in chain)
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{
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if (slot.Species != evo.Species)
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continue;
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if (!slot.IsLevelWithinRange(pk.Met_Level))
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break;
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// Deerling and Sawsbuck can change forms when seasons change, thus can be any of the [0,3] form values.
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// no other wild forms can change
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if (slot.Form != evo.Form && slot.Species is not ((int)Species.Deerling or (int)Species.Sawsbuck))
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break;
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yield return slot;
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break;
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2020-08-30 17:23:22 +00:00
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}
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}
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2019-09-13 06:20:52 +00:00
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}
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2022-01-03 05:35:59 +00:00
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}
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