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GlamourerOld/Interop/VisorService.cs

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+using System;
+using System.Linq;
+using Dalamud.Hooking;
+using Dalamud.Utility.Signatures;
+using FFXIVClientStructs.FFXIV.Client.Graphics.Scene;
+using Penumbra.GameData.Structs;
+
+namespace Glamourer.Interop;
+
+public class VisorService : IDisposable
+{
+    public VisorService()
+    {
+        SignatureHelper.Initialise(this);
+        _setupVisorHook.Enable();
+    }
+
+    public void Dispose()
+        => _setupVisorHook.Dispose();
+
+    public static unsafe bool GetVisorState(nint humanPtr)
+    {
+        if (humanPtr == IntPtr.Zero)
+            return false;
+
+        var data  = (Human*)humanPtr;
+        var flags = &data->CharacterBase.UnkFlags_01;
+        return (*flags & Offsets.DrawObjectVisorStateFlag) != 0;
+    }
+
+    public unsafe void SetVisorState(nint humanPtr, bool on)
+    {
+        if (humanPtr == IntPtr.Zero)
+            return;
+
+        var data  = (Human*)humanPtr;
+        _setupVisorHook.Original(humanPtr, (ushort) data->HeadSetID, on);
+    }
+
+    private delegate void UpdateVisorDelegateInternal(nint humanPtr, ushort modelId, bool on);
+    public delegate  void UpdateVisorDelegate(DrawObject human, SetId modelId, ref bool on);
+
+    [Signature(Penumbra.GameData.Sigs.SetupVisor, DetourName = nameof(SetupVisorDetour))]
+    private readonly Hook<UpdateVisorDelegateInternal> _setupVisorHook = null!;
+
+    public event UpdateVisorDelegate? VisorUpdate;
+
+    private void SetupVisorDetour(nint humanPtr, ushort modelId, bool on)
+    {
+        InvokeVisorEvent(humanPtr, modelId, ref on);
+        _setupVisorHook.Original(humanPtr, modelId, on);
+    }
+
+    private void InvokeVisorEvent(DrawObject drawObject, SetId modelId, ref bool on)
+    {
+        if (VisorUpdate == null)
+        {
+            Glamourer.Log.Excessive($"Visor setup on 0x{drawObject.Address:X} with {modelId.Value}, setting to {on}.");
+            return;
+        }
+
+        var initialValue = on;
+        foreach (var del in VisorUpdate.GetInvocationList().OfType<UpdateVisorDelegate>())
+        {
+            try
+            {
+                del(drawObject, modelId, ref on);
+            }
+            catch (Exception ex)
+            {
+                Glamourer.Log.Error($"Could not invoke {nameof(VisorUpdate)} Subscriber:\n{ex}");
+            }
+        }
+
+        Glamourer.Log.Excessive(
+            $"Visor setup on 0x{drawObject.Address:X} with {modelId.Value}, setting to {on}, initial call was {initialValue}.");
+    }
+}