boom

LightlessSync/Services/NameplateUpdateHookService.cs

@@ -0,0 +1,57 @@
+using Dalamud.Hooking;
+using Dalamud.Plugin.Services;
+using Dalamud.Utility.Signatures;
+using FFXIVClientStructs.FFXIV.Client.Game.Character;
+using FFXIVClientStructs.FFXIV.Client.UI;
+using FFXIVClientStructs.FFXIV.Component.GUI;
+using Microsoft.Extensions.Logging;
+
+namespace LightlessSync.Services;
+
+public unsafe sealed class NameplateUpdateHookService : IDisposable
+{
+    private delegate nint UpdateNameplateDelegate(RaptureAtkModule* raptureAtkModule, RaptureAtkModule.NamePlateInfo* namePlateInfo,
+        NumberArrayData* numArray, StringArrayData* stringArray, BattleChara* battleChara, int numArrayIndex, int stringArrayIndex);
+    public delegate void NameplateUpdatedHandler(RaptureAtkModule* raptureAtkModule, RaptureAtkModule.NamePlateInfo* namePlateInfo,
+        NumberArrayData* numArray, StringArrayData* stringArray, BattleChara* battleChara, int numArrayIndex, int stringArrayIndex);
+
+    // Glyceri, Thanks :bow:
+    [Signature("40 53 55 57 41 56 48 81 EC ?? ?? ?? ?? 48 8B 84 24", DetourName = nameof(UpdateNameplateDetour))]
+    private readonly Hook<UpdateNameplateDelegate>? _nameplateHook = null;
+
+    private readonly ILogger<NameplateUpdateHookService> _logger;
+
+    public NameplateUpdateHookService(ILogger<NameplateUpdateHookService> logger, IGameInteropProvider interop)
+    {
+        _logger = logger;
+
+        interop.InitializeFromAttributes(this);
+        _nameplateHook?.Enable();
+    }
+
+    public event NameplateUpdatedHandler? NameplateUpdated;
+
+    /// <summary>
+    /// Detour for the game's internal nameplate update function.
+    /// This will be called whenever the client updates any nameplate.
+    /// </summary>
+    private nint UpdateNameplateDetour(RaptureAtkModule* raptureAtkModule, RaptureAtkModule.NamePlateInfo* namePlateInfo,
+        NumberArrayData* numArray, StringArrayData* stringArray, BattleChara* battleChara, int numArrayIndex, int stringArrayIndex)
+    {
+        try
+        {
+            NameplateUpdated?.Invoke(raptureAtkModule, namePlateInfo, numArray, stringArray, battleChara, numArrayIndex, stringArrayIndex);
+        }
+        catch (Exception e)
+        {
+            _logger.LogError(e, "Error in NameplateUpdateHookService UpdateNameplateDetour");
+        }
+
+        return _nameplateHook!.Original(raptureAtkModule, namePlateInfo, numArray, stringArray, battleChara, numArrayIndex, stringArrayIndex);
+    }
+
+    public void Dispose()
+    {
+        _nameplateHook?.Dispose();
+    }
+}