Add some start for Evp Data.

Penumbra.GameData/Files/MtrlFile.Write.cs

@@ -1,4 +1,3 @@
-using System;
 using System.IO;
 using System.Linq;
 using System.Text;

Penumbra.GameData/Structs/EqpEntry.cs

@@ -23,8 +23,8 @@ public enum EqpEntry : ulong
     BodyShowNecklace         = 0x08_00ul,
     BodyShowBracelet         = 0x10_00ul,
     BodyShowTail             = 0x20_00ul,
-    DisableBreastPhysics = 0x40_00ul,
+    BodyDisableBreastPhysics = 0x40_00ul,
-    _15                  = 0x80_00ul,
+    BodyHasVfxObject         = 0x80_00ul,
     BodyMask                 = 0xFF_FFul,
 
     LegsEnabled      = 0x01ul << 16,
@@ -75,7 +75,7 @@ public enum EqpEntry : ulong
     _55                   = 0x00_80_00ul << 40,
     HeadShowHrothgarHat   = 0x01_00_00ul << 40,
     HeadShowVieraHat      = 0x02_00_00ul << 40,
-    _58                   = 0x04_00_00ul << 40,
+    HeadHasVfxObject      = 0x04_00_00ul << 40,
     _59                   = 0x08_00_00ul << 40,
     _60                   = 0x10_00_00ul << 40,
     _61                   = 0x20_00_00ul << 40,
@@ -150,8 +150,8 @@ public static class Eqp
             EqpEntry.BodyShowNecklace         => EquipSlot.Body,
             EqpEntry.BodyShowBracelet         => EquipSlot.Body,
             EqpEntry.BodyShowTail             => EquipSlot.Body,
-            EqpEntry.DisableBreastPhysics => EquipSlot.Body,
+            EqpEntry.BodyDisableBreastPhysics => EquipSlot.Body,
-            EqpEntry._15                  => EquipSlot.Body,
+            EqpEntry.BodyHasVfxObject         => EquipSlot.Body,
 
             EqpEntry.LegsEnabled      => EquipSlot.Legs,
             EqpEntry.LegsHideKneePads => EquipSlot.Legs,
@@ -198,9 +198,9 @@ public static class Eqp
             EqpEntry._55                   => EquipSlot.Head,
             EqpEntry.HeadShowHrothgarHat   => EquipSlot.Head,
             EqpEntry.HeadShowVieraHat      => EquipSlot.Head,
+            EqpEntry.HeadHasVfxObject      => EquipSlot.Head,
 
-            // Currently unused.
+            // currently unused
-            EqpEntry._58 => EquipSlot.Unknown,
             EqpEntry._59 => EquipSlot.Unknown,
             EqpEntry._60 => EquipSlot.Unknown,
             EqpEntry._61 => EquipSlot.Unknown,
@@ -229,8 +229,8 @@ public static class Eqp
             EqpEntry.BodyShowNecklace         => "Show Necklace",
             EqpEntry.BodyShowBracelet         => "Show Bracelet",
             EqpEntry.BodyShowTail             => "Show Tail",
-            EqpEntry.DisableBreastPhysics => "Disable Breast Physics",
+            EqpEntry.BodyDisableBreastPhysics => "Disable Breast Physics",
-            EqpEntry._15                  => "Unknown 15",
+            EqpEntry.BodyHasVfxObject         => "Has Special Effects",
 
             EqpEntry.LegsEnabled      => "Enabled",
             EqpEntry.LegsHideKneePads => "Hide Knee Pads",
@@ -277,7 +277,8 @@ public static class Eqp
             EqpEntry._55                   => "Unknown 55",
             EqpEntry.HeadShowHrothgarHat   => "Show on Hrothgar",
             EqpEntry.HeadShowVieraHat      => "Show on Viera",
-            EqpEntry._58                   => "Unknown 58",
+            EqpEntry.HeadHasVfxObject      => "Has Special Effects",
+
             EqpEntry._59 => "Unknown 59",
             EqpEntry._60 => "Unknown 60",
             EqpEntry._61 => "Unknown 61",

Penumbra/Meta/Files/EvpFile.cs

@@ -0,0 +1,68 @@
+using System;
+
+namespace Penumbra.Meta.Files;
+
+
+// EVP file structure:
+// [Identifier:3 bytes, EVP]
+// [NumModels:ushort]
+// NumModels x [ModelId:ushort]
+//     Containing the relevant model IDs. Seems to be sorted.
+// NumModels x [DataArray]:512 Byte]
+// Containing Flags in each byte, 0x01 set for Body, 0x02 set for Helmet. Unsure where the index into this array comes from.
+public unsafe class EvpFile : MetaBaseFile
+{
+    public const int FlagArraySize = 512;
+
+    [Flags]
+    public enum EvpFlag : byte
+    {
+        None = 0x00,
+        Body = 0x01,
+        Head = 0x02,
+        Both = Body | Head,
+    }
+
+    public int NumModels
+        => Data[ 3 ];
+
+    public ReadOnlySpan< ushort > ModelSetIds
+        => new(Data + 4, NumModels);
+
+    public ushort ModelSetId( int idx )
+        => idx >= 0 && idx < NumModels ? ( ( ushort* )( Data + 4 ) )[ idx ] : ushort.MaxValue;
+
+    public ReadOnlySpan< EvpFlag > Flags( int idx )
+        => new(Data + 4 + idx * FlagArraySize, FlagArraySize);
+
+    public EvpFlag Flag( ushort modelSet, int arrayIndex )
+    {
+        if( arrayIndex is >= FlagArraySize or < 0 )
+        {
+            return EvpFlag.None;
+        }
+
+        var ids = ModelSetIds;
+        for( var i = 0; i < ids.Length; ++i )
+        {
+            var model = ids[ i ];
+            if( model < modelSet )
+            {
+                continue;
+            }
+
+            if( model > modelSet )
+            {
+                break;
+            }
+
+            return Flags( i )[ arrayIndex ];
+        }
+
+        return EvpFlag.None;
+    }
+
+    public EvpFile()
+        : base( ( Interop.Structs.CharacterUtility.Index )1 ) // TODO: Name
+    { }
+}

Penumbra/Meta/Files/MetaBaseFile.cs

@@ -12,7 +12,7 @@ public unsafe class MetaBaseFile : IDisposable
     public CharacterUtility.InternalIndex Index { get; }
 
     public MetaBaseFile( Interop.Structs.CharacterUtility.Index idx )
-        => Index = CharacterUtility.ReverseIndices[(int) idx];
+        => Index = CharacterUtility.ReverseIndices[ ( int )idx ];
 
     protected (IntPtr Data, int Length) DefaultData
         => Penumbra.CharacterUtility.DefaultResource( Index );