PKHeX/PKHeX.Core/Saves/Substructures/Gen5/BoxLayout5.cs

using System;

namespace PKHeX.Core;

public sealed class BoxLayout5 : SaveBlock<SAV5>
{
    public BoxLayout5(SAV5BW sav, int offset) : base(sav) => Offset = offset;
    public BoxLayout5(SAV5B2W2 sav, int offset) : base(sav) => Offset = offset;

    public int CurrentBox { get => Data[Offset]; set => Data[Offset] = (byte)value; }
    public int GetBoxNameOffset(int box) => Offset + (0x28 * box) + 4;
    public int GetBoxWallpaperOffset(int box) => Offset + 0x3C4 + box;

    public int GetBoxWallpaper(int box)
    {
        if ((uint)box > SAV.BoxCount)
            return 0;
        return Data[GetBoxWallpaperOffset(box)];
    }

    public void SetBoxWallpaper(int box, int value)
    {
        if ((uint)box > SAV.BoxCount)
            return;
        Data[GetBoxWallpaperOffset(box)] = (byte)value;
    }

    private Span<byte> GetBoxNameSpan(int box) => Data.AsSpan(GetBoxNameOffset(box), 0x14);

    public string GetBoxName(int box)
    {
        if (box >= SAV.BoxCount)
            return string.Empty;
        return SAV.GetString(GetBoxNameSpan(box));
    }

    public void SetBoxName(int box, ReadOnlySpan<char> value)
    {
        SAV.SetString(GetBoxNameSpan(box), value, 13, StringConverterOption.ClearZero);
    }

    public byte BoxesUnlocked
    {
        get => Data[Offset + 0x3DD];
        set
        {
            if (value > SAV.BoxCount)
                value = (byte)SAV.BoxCount;
            Data[Offset + 0x3DD] = value;
        }
    }

    public string this[int i]
    {
        get => GetBoxName(i);
        set => SetBoxName(i, value);
    }
}