Support for TexTools .rgsp files for meta changes. (Racial Scaling Parameters)

Penumbra/Meta/Files/CmpFile.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.IO;
+using System.Linq;
+using Penumbra.Game;
+using Penumbra.Game.Enums;
+
+namespace Penumbra.Meta.Files
+{
+    public class CmpFile
+    {
+        private const int RacialScalingStart = 0x2A800;
+
+        private readonly byte[]           _byteData = new byte[RacialScalingStart];
+        private readonly List< RspEntry > _rspEntries;
+
+        public CmpFile( byte[] bytes )
+        {
+            if( bytes.Length < RacialScalingStart )
+            {
+                throw new ArgumentOutOfRangeException();
+            }
+
+            Array.Copy( bytes, _byteData, RacialScalingStart );
+            var rspEntryNum = ( bytes.Length - RacialScalingStart ) / RspEntry.ByteSize;
+            _rspEntries = new List< RspEntry >( rspEntryNum );
+            for( var i = 0; i < rspEntryNum; ++i )
+            {
+                _rspEntries.Add( new RspEntry( bytes, RacialScalingStart + i * RspEntry.ByteSize ) );
+            }
+        }
+
+        public RspEntry this[ SubRace subRace ]
+            => _rspEntries[ subRace.ToRspIndex() ];
+
+        public bool Set( SubRace subRace, RspAttribute attribute, float value )
+        {
+            var entry    = _rspEntries[ subRace.ToRspIndex() ];
+            var oldValue = entry[ attribute ];
+            if( oldValue == value )
+            {
+                return false;
+            }
+
+            entry[ attribute ] = value;
+            return true;
+        }
+
+        public byte[] WriteBytes()
+        {
+            using var s = new MemoryStream( RacialScalingStart + _rspEntries.Count * RspEntry.ByteSize );
+            s.Write( _byteData, 0, _byteData.Length );
+            foreach( var entry in _rspEntries )
+            {
+                var bytes = entry.ToBytes();
+                s.Write( bytes, 0, bytes.Length );
+            }
+
+            return s.ToArray();
+        }
+
+        private CmpFile( byte[] data, List< RspEntry > entries )
+        {
+            _byteData   = data.ToArray();
+            _rspEntries = entries.ToList();
+        }
+
+        public CmpFile Clone()
+            => new( _byteData, _rspEntries );
+    }
+}