Penumbra/Penumbra/Meta/Files/CmpFile.cs

using System;
using Penumbra.GameData.Enums;
using Penumbra.GameData.Structs;
using Penumbra.Interop.Structs;
using System.Collections.Generic;
using Penumbra.Interop.Services;
using Penumbra.String.Functions;

namespace Penumbra.Meta.Files;

// The human.cmp file contains many character-relevant parameters like color sets.
// We only support manipulating the racial scaling parameters at the moment.
public sealed unsafe class CmpFile : MetaBaseFile
{
    public static readonly CharacterUtility.InternalIndex InternalIndex =
        CharacterUtility.ReverseIndices[ ( int )MetaIndex.HumanCmp ];

    private const int RacialScalingStart = 0x2A800;

    public float this[ SubRace subRace, RspAttribute attribute ]
    {
        get => *( float* )( Data + RacialScalingStart + ToRspIndex( subRace ) * RspEntry.ByteSize + ( int )attribute * 4 );
        set => *( float* )( Data + RacialScalingStart + ToRspIndex( subRace ) * RspEntry.ByteSize + ( int )attribute * 4 ) = value;
    }

    public override void Reset()
        => MemoryUtility.MemCpyUnchecked( Data, ( byte* )DefaultData.Data, DefaultData.Length );

    public void Reset( IEnumerable< (SubRace, RspAttribute) > entries )
    {
        foreach( var (r, a) in entries )
        {
            this[ r, a ] = GetDefault( r, a );
        }
    }

    public CmpFile()
        : base( MetaIndex.HumanCmp )
    {
        AllocateData( DefaultData.Length );
        Reset();
    }

    public static float GetDefault( SubRace subRace, RspAttribute attribute )
    {
        var data = ( byte* )Penumbra.CharacterUtility.DefaultResource( InternalIndex ).Address;
        return *( float* )( data + RacialScalingStart + ToRspIndex( subRace ) * RspEntry.ByteSize + ( int )attribute * 4 );
    }

    private static int ToRspIndex( SubRace subRace )
        => subRace switch
        {
            SubRace.Midlander       => 0,
            SubRace.Highlander      => 1,
            SubRace.Wildwood        => 10,
            SubRace.Duskwight       => 11,
            SubRace.Plainsfolk      => 20,
            SubRace.Dunesfolk       => 21,
            SubRace.SeekerOfTheSun  => 30,
            SubRace.KeeperOfTheMoon => 31,
            SubRace.Seawolf         => 40,
            SubRace.Hellsguard      => 41,
            SubRace.Raen            => 50,
            SubRace.Xaela           => 51,
            SubRace.Helion          => 60,
            SubRace.Lost            => 61,
            SubRace.Rava            => 70,
            SubRace.Veena           => 71,
            SubRace.Unknown         => 0,
            _                       => throw new ArgumentOutOfRangeException( nameof( subRace ), subRace, null ),
        };
}