mirror of
https://github.com/kwsch/PKHeX
synced 2024-11-23 12:33:06 +00:00
94 lines
3.1 KiB
C#
94 lines
3.1 KiB
C#
using System;
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using static System.Buffers.Binary.BinaryPrimitives;
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namespace PKHeX.Core;
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// anatomy of a QR7:
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// u32 magic; // POKE
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// u32 _0xFF;
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// u32 box;
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// u32 slot;
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// u32 num_copies;
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// u8 reserved[0x1C];
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// u8 ek7[0x104];
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// u8 dex_data[0x60];
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// u16 crc16
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// sizeof(QR7) == 0x1A2
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/// <summary>
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/// Generation 7 QR format (readable by the in-game QR Scanner feature)
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/// </summary>
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public static class QR7
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{
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public const int SIZE = 0x1A2;
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private static ReadOnlySpan<byte> GenderDifferences =>
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[
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0x08, 0x10, 0x18, 0x06, 0x00, 0x36, 0x00, 0x00, 0x03, 0x00,
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0x30, 0x00, 0x02, 0x80, 0xC1, 0x08, 0x06, 0x00, 0x00, 0x04,
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0x60, 0x00, 0x04, 0x46, 0x4C, 0x8C, 0xD1, 0x22, 0x21, 0x01,
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0x00, 0x80, 0x03, 0x28, 0x0D, 0x00, 0x00, 0x00, 0x18, 0x38,
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0x0C, 0x10, 0x00, 0x40, 0x00, 0x00, 0x02, 0x00, 0x00, 0xF0,
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0xBF, 0x80, 0x0E, 0x01, 0x00, 0x38, 0x66, 0x3B, 0x03, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x10, 0x40,
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];
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private static bool IsGenderDifferent(ushort species)
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{
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var index = species >> 3;
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var table = GenderDifferences;
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if (index >= table.Length)
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return false;
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return (table[index] & (1 << (species & 7))) != 0;
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}
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private static void GetRawQR(Span<byte> dest, ushort species, byte form, bool shiny, byte gender)
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{
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dest[..6].Fill(0xFF);
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WriteUInt16LittleEndian(dest[0x28..], species);
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var pi = PersonalTable.USUM.GetFormEntry(species, form);
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bool biGender = false;
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if (pi.OnlyMale)
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gender = 0;
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else if (pi.OnlyFemale)
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gender = 1;
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else if (pi.Genderless)
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gender = 2;
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else
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biGender = !IsGenderDifferent(species);
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dest[0x2A] = form;
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dest[0x2B] = gender;
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dest[0x2C] = shiny ? (byte)1 : (byte)0;
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dest[0x2D] = biGender ? (byte)1 : (byte)0;
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}
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public static byte[] GenerateQRData(PK7 pk7, int box = 0, int slot = 0, int num_copies = 1)
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{
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byte[] data = new byte[SIZE];
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SetQRData(pk7, data, box, slot, num_copies);
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return data;
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}
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public static void SetQRData(PK7 pk7, Span<byte> span, int box = 0, int slot = 0, int num_copies = 1)
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{
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box = Math.Clamp(box, 0, 31);
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slot = Math.Clamp(slot, 0, 29);
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num_copies = Math.Min(num_copies, 1);
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ArgumentOutOfRangeException.ThrowIfLessThan(span.Length, SIZE);
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WriteUInt32LittleEndian(span, 0x454B4F50); // POKE magic
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span[0x4] = 0xFF; // QR Type
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WriteInt32LittleEndian(span[0x08..], box);
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WriteInt32LittleEndian(span[0x0C..], slot);
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WriteInt32LittleEndian(span[0x10..], num_copies); // No need to check max num_copies, payload parser handles it on-console.
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pk7.EncryptedPartyData.CopyTo(span[0x30..]); // Copy in pokemon data
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GetRawQR(span[0x140..], pk7.Species, pk7.Form, pk7.IsShiny, (byte)pk7.Gender);
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var chk = Checksums.CRC16Invert(span[..0x1A0]);
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WriteUInt16LittleEndian(span[0x1A0..], chk);
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}
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}
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