Add CalculateHeight Hook

xivdev · Sep 19, 2023 · 808d7ab · 808d7ab
1 parent 69012e5
commit 808d7ab
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Showing 2 changed files with 19 additions and 2 deletions.
diff --git a/Penumbra.GameData b/Penumbra.GameData
diff --git a/Penumbra/Interop/PathResolving/MetaState.cs b/Penumbra/Interop/PathResolving/MetaState.cs
@@ -1,5 +1,7 @@
 using Dalamud.Hooking;
 using Dalamud.Utility.Signatures;
+using FFXIVClientStructs.FFXIV.Client.Game.Character;
+using FFXIVClientStructs.FFXIV.Client.Game.Object;
 using FFXIVClientStructs.FFXIV.Client.Graphics.Scene;
 using OtterGui.Classes;
 using Penumbra.Collections;
@@ -36,7 +38,7 @@ namespace Penumbra.Interop.PathResolving;
 // RSP tail entries seem to be obtained by "E8 ?? ?? ?? ?? 0F 28 F0 48 8B 05"
 // RSP bust size entries seem to be obtained by  "E8 ?? ?? ?? ?? F2 0F 10 44 24 ?? 8B 44 24 ?? F2 0F 11 45 ?? 89 45 ?? 83 FF"
 // they all are called by many functions, but the most relevant seem to be Human.SetupFromCharacterData, which is only called by CharacterBase.Create,
-// ChangeCustomize and RspSetupCharacter, which is hooked here.
+// ChangeCustomize and RspSetupCharacter, which is hooked here, as well as Character.CalculateHeight.
 
 // GMP Entries seem to be only used by "48 8B ?? 53 55 57 48 83 ?? ?? 48 8B", which has a DrawObject as its first parameter.
 public unsafe class MetaState : IDisposable
@@ -74,6 +76,7 @@ public MetaState(PerformanceTracker performance, CommunicatorService communicato
         _setupVisorHook.Enable();
         _rspSetupCharacterHook.Enable();
         _changeCustomize.Enable();
+        _calculateHeightHook.Enable();
         _gameEventManager.CreatingCharacterBase += OnCreatingCharacterBase;
         _gameEventManager.CharacterBaseCreated  += OnCharacterBaseCreated;
     }
@@ -118,6 +121,7 @@ public void Dispose()
         _setupVisorHook.Dispose();
         _rspSetupCharacterHook.Dispose();
         _changeCustomize.Dispose();
+        _calculateHeightHook.Dispose();
         _gameEventManager.CreatingCharacterBase -= OnCreatingCharacterBase;
         _gameEventManager.CharacterBaseCreated  -= OnCharacterBaseCreated;
     }
@@ -242,6 +246,19 @@ private void RspSetupCharacterDetour(nint drawObject, nint unk2, float unk3, nin
         }
     }
 
+    private delegate ulong CalculateHeightDelegate(Character* character);
+
+    // TODO: use client structs
+    [Signature(Sigs.CalculateHeight, DetourName = nameof(CalculateHeightDetour))]
+    private readonly Hook<CalculateHeightDelegate> _calculateHeightHook = null!;
+
+    private ulong CalculateHeightDetour(Character* character)
+    {
+        var       resolveData = _collectionResolver.IdentifyCollection((GameObject*)character, true);
+        using var cmp         = resolveData.ModCollection.TemporarilySetCmpFile(_characterUtility);
+        return _calculateHeightHook.Original(character);
+    }
+
     private delegate bool ChangeCustomizeDelegate(nint human, nint data, byte skipEquipment);
 
     [Signature(Sigs.ChangeCustomize, DetourName = nameof(ChangeCustomizeDetour))]