mirror of
https://github.com/kwsch/PKHeX
synced 2024-09-20 14:21:59 +00:00
7b6abc0520
Legality check now catches buffer overflow mons. Now that I have each type exposing a trash length & charcount, should be easy to have some reusable trash byte measuring methods (see the old branch)
216 lines
7.4 KiB
C#
216 lines
7.4 KiB
C#
using System;
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using System.Linq;
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using static System.Buffers.Binary.BinaryPrimitives;
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namespace PKHeX.Core;
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/// <summary>
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/// Generation 3 <see cref="SaveFile"/> object for Pokémon Ruby Sapphire Box saves.
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/// </summary>
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public sealed class SAV3RSBox : SaveFile, IGCSaveFile, IBoxDetailName, IBoxDetailWallpaper
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{
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protected internal override string ShortSummary => $"{Version} #{SaveCount:0000}";
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public override string Extension => this.GCExtension();
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public override PersonalTable3 Personal => PersonalTable.RS;
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public override ReadOnlySpan<ushort> HeldItems => Legal.HeldItems_RS;
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public SAV3GCMemoryCard? MemoryCard { get; init; }
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private readonly bool Japanese;
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public SAV3RSBox(byte[] data, SAV3GCMemoryCard memCard) : this(data) => MemoryCard = memCard;
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public SAV3RSBox(bool japanese = false) : base(SaveUtil.SIZE_G3BOX)
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{
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Japanese = japanese;
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Box = 0;
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Blocks = [];
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ClearBoxes();
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}
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public SAV3RSBox(byte[] data) : base(data)
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{
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Japanese = data[0] == 0x83; // ポケモンボックス Ｒ＆Ｓ
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Blocks = ReadBlocks(data);
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InitializeData();
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}
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private void InitializeData()
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{
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// Detect active save
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int[] SaveCounts = Array.ConvertAll(Blocks, block => (int)block.SaveCount);
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SaveCount = SaveCounts.Max();
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int ActiveSAV = Array.IndexOf(SaveCounts, SaveCount) / BLOCK_COUNT;
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var ordered = Blocks
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.Skip(ActiveSAV * BLOCK_COUNT)
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.Take(BLOCK_COUNT)
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.OrderBy(b => b.ID);
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Blocks = [..ordered];
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// Set up PC data buffer beyond end of save file.
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Box = Data.Length;
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Array.Resize(ref Data, Data.Length + SIZE_RESERVED); // More than enough empty space.
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// Copy block to the allocated location
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const int copySize = BLOCK_SIZE - 0x10;
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foreach (var b in Blocks)
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Array.Copy(Data, b.Offset + 0xC, Data, (int) (Box + (b.ID * copySize)), copySize);
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}
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private static BlockInfoRSBOX[] ReadBlocks(ReadOnlySpan<byte> data)
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{
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var blocks = new BlockInfoRSBOX[2 * BLOCK_COUNT];
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for (int i = 0; i < blocks.Length; i++)
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{
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int offset = BLOCK_SIZE + (i * BLOCK_SIZE);
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blocks[i] = new BlockInfoRSBOX(data, offset);
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}
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return blocks;
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}
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private BlockInfoRSBOX[] Blocks;
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private int SaveCount;
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private const int BLOCK_COUNT = 23;
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private const int BLOCK_SIZE = 0x2000;
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private const int SIZE_RESERVED = BLOCK_COUNT * BLOCK_SIZE; // unpacked box data
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protected override byte[] GetFinalData()
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{
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var newFile = GetInnerData();
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// Return the gci if Memory Card is not being exported
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if (MemoryCard is null)
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return newFile;
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MemoryCard.WriteSaveGameData(newFile);
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return MemoryCard.Data.ToArray();
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}
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private byte[] GetInnerData()
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{
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// Copy Box data back
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const int copySize = BLOCK_SIZE - 0x10;
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foreach (var b in Blocks)
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Array.Copy(Data, (int) (Box + (b.ID * copySize)), Data, b.Offset + 0xC, copySize);
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SetChecksums();
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return Data[..^SIZE_RESERVED];
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}
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// Configuration
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protected override SAV3RSBox CloneInternal() => new(GetInnerData()) { MemoryCard = MemoryCard };
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protected override int SIZE_STORED => PokeCrypto.SIZE_3STORED + 4;
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protected override int SIZE_PARTY => PokeCrypto.SIZE_3PARTY; // unused
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public override PK3 BlankPKM => new();
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public override Type PKMType => typeof(PK3);
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public override ushort MaxMoveID => Legal.MaxMoveID_3;
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public override ushort MaxSpeciesID => Legal.MaxSpeciesID_3;
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public override int MaxAbilityID => Legal.MaxAbilityID_3;
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public override int MaxItemID => Legal.MaxItemID_3;
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public override int MaxBallID => Legal.MaxBallID_3;
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public override GameVersion MaxGameID => Legal.MaxGameID_3;
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public override int MaxEV => EffortValues.Max255;
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public override byte Generation => 3;
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public override EntityContext Context => EntityContext.Gen3;
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public override int MaxStringLengthTrainer => 7;
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public override int MaxStringLengthNickname => 10;
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public override int MaxMoney => 999999;
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public override int BoxCount => 50;
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public override bool HasParty => false;
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public override bool IsPKMPresent(ReadOnlySpan<byte> data) => EntityDetection.IsPresentGBA(data);
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// Checksums
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protected override void SetChecksums() => Blocks.SetChecksums(Data);
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public override bool ChecksumsValid => Blocks.GetChecksumsValid(Data);
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public override string ChecksumInfo => Blocks.GetChecksumInfo(Data);
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// Trainer Info
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public override GameVersion Version { get => GameVersion.RSBOX; set { } }
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// Storage
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public override int GetPartyOffset(int slot) => -1;
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public override int GetBoxOffset(int box) => Box + 8 + (SIZE_STORED * box * 30);
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public override int CurrentBox
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{
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get => Data[Box + 4] * 2;
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set => Data[Box + 4] = (byte)(value / 2);
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}
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private Span<byte> GetBoxNameSpan(int box)
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{
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int offset = Box + 0x1EC38 + (9 * box);
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return Data.AsSpan(offset, 9);
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}
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private int GetBoxWallpaperOffset(int box)
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{
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// Box Wallpaper is directly after the Box Names
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return Box + 0x1ED19 + (box / 2);
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}
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public int GetBoxWallpaper(int box) => Data[GetBoxWallpaperOffset(box)];
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public void SetBoxWallpaper(int box, int value) => Data[GetBoxWallpaperOffset(box)] = (byte)value;
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public string GetBoxName(int box)
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{
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// Tweaked for the 1-30/31-60 box showing
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int lo = (30 *(box%2)) + 1;
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int hi = 30*((box % 2) + 1);
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string boxName = $"[{lo:00}-{hi:00}] ";
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box /= 2;
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var span = GetBoxNameSpan(box);
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if (span[0] is 0 or 0xFF)
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boxName += BoxDetailNameExtensions.GetDefaultBoxNameCaps(box);
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else
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boxName += GetString(span);
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return boxName;
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}
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public void SetBoxName(int box, ReadOnlySpan<char> value)
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{
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var span = GetBoxNameSpan(box);
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if (value == BoxDetailNameExtensions.GetDefaultBoxNameCaps(box))
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{
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span.Clear();
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return;
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}
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SetString(span, value, 8, StringConverterOption.ClearZero);
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}
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protected override PK3 GetPKM(byte[] data)
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{
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if (data.Length != PokeCrypto.SIZE_3STORED)
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Array.Resize(ref data, PokeCrypto.SIZE_3STORED);
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return new(data);
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}
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protected override byte[] DecryptPKM(byte[] data)
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{
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if (data.Length != PokeCrypto.SIZE_3STORED)
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Array.Resize(ref data, PokeCrypto.SIZE_3STORED);
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return PokeCrypto.DecryptArray3(data);
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}
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protected override void SetDex(PKM pk) { /* No Pokédex for this game, do nothing */ }
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public override void WriteBoxSlot(PKM pk, Span<byte> data)
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{
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base.WriteBoxSlot(pk, data);
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WriteUInt16LittleEndian(data[(PokeCrypto.SIZE_3STORED)..], pk.TID16);
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WriteUInt16LittleEndian(data[(PokeCrypto.SIZE_3STORED + 2)..], pk.SID16);
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}
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public override string GetString(ReadOnlySpan<byte> data)
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=> StringConverter3.GetString(data, Japanese);
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public override int LoadString(ReadOnlySpan<byte> data, Span<char> destBuffer)
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=> StringConverter3.LoadString(data, destBuffer, Japanese);
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public override int SetString(Span<byte> destBuffer, ReadOnlySpan<char> value, int maxLength, StringConverterOption option)
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=> StringConverter3.SetString(destBuffer, value, maxLength, Japanese, option);
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}
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