mirror of
https://github.com/kwsch/PKHeX
synced 2024-12-24 03:13:18 +00:00
3c232505e5
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".
67 lines
2.6 KiB
C#
67 lines
2.6 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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public sealed class Hall4
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{
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private const int SIZE = 0xBA0;
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private const int SIZE_FOOTER = 0x10;
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private const int SIZE_BLOCK = 0x1000;
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private readonly byte[] Raw;
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private readonly int Offset;
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private Span<byte> Data => Raw.AsSpan(Offset, SIZE_BLOCK);
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public Hall4(byte[] data, int offset) => (Raw, Offset) = (data, offset);
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private const int SIZE_ARRAY = 0x3DE; // 493+(egg, bad-egg) species
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// Structure:
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// u32 key
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// u16[495] single records
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// u16[495] double records
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// u16[495] multi records
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// u16 alignment
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// extdata 0x10 byte footer
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public uint Key { get => ReadUInt32LittleEndian(Data); set => WriteUInt32LittleEndian(Data, value); }
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public ushort GetCount(int battleType, ushort species)
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{
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var offset = GetRecordOffset(battleType, species);
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return ReadUInt16LittleEndian(Data[offset..]);
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}
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public void SetCount(int battleType, ushort species, ushort value)
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{
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var offset = GetRecordOffset(battleType, species);
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WriteUInt16LittleEndian(Data[offset..], value);
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}
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private static int GetRecordOffset(int battleType, ushort species)
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{
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if ((uint)species > Legal.MaxSpeciesID_4)
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throw new ArgumentOutOfRangeException(nameof(species));
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if ((uint)battleType > 2)
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throw new ArgumentOutOfRangeException(nameof(battleType));
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return sizeof(uint) + (battleType * SIZE_ARRAY) + (species * sizeof(ushort));
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}
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#region Footer
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public bool SizeValid => BlockSize == SIZE;
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public bool ChecksumValid => Checksum == GetChecksum();
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public bool IsValid => SizeValid && ChecksumValid;
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public uint Magic { get => ReadUInt32LittleEndian(Footer); set => WriteUInt32LittleEndian(Footer, value); }
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public uint Revision { get => ReadUInt32LittleEndian(Footer[0x4..]); set => WriteUInt32LittleEndian(Footer[0x4..], value); }
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public int BlockSize { get => ReadInt32LittleEndian (Footer[0x8..]); set => WriteInt32LittleEndian (Footer[0x8..], value); }
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public ushort BlockID { get => ReadUInt16LittleEndian(Footer[0xC..]); set => WriteUInt16LittleEndian(Footer[0xC..], value); }
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public ushort Checksum { get => ReadUInt16LittleEndian(Footer[0xE..]); set => WriteUInt16LittleEndian(Footer[0xE..], value); }
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private ReadOnlySpan<byte> GetRegion() => Data[..(SIZE + SIZE_FOOTER)];
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private Span<byte> Footer => Data.Slice(SIZE, SIZE_FOOTER);
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private ushort GetChecksum() => Checksums.CRC16_CCITT(GetRegion()[..^2]);
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public void RefreshChecksum() => Checksum = GetChecksum();
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#endregion
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}
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