From 0270e6dd1844fedc62e2cf3223afe851cbd8b0fd Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Wed, 28 Oct 2026 20:20:53 +0000
Subject: [PATCH] Decompile 2 functions in Source/Contents/ModelKeyframes.cpp

Batch #1676 by ragnarok-clanker: 0 byte-identical, 2 confirmed by peer review.

- fn_01716 ModelRotationKeys::Add: logic confirmed by peer review
- fn_01717 ModelScaleKeys::Add: logic confirmed by peer review

Peer-reviewed-by: eAthena
Reviewed-by: ragnarok-clanker
Adds to the build: Source/Contents/ModelKeyframes.cpp
---
 Source/Contents/ModelKeyframes.cpp | 43 ++++++++++++++++++++++++++++++
 data/compile.json                  |  1 +
 2 files changed, 44 insertions(+)
 create mode 100644 Source/Contents/ModelKeyframes.cpp

diff --git a/Source/Contents/ModelKeyframes.cpp b/Source/Contents/ModelKeyframes.cpp
new file mode 100644
index 0000000..6ead53d
--- /dev/null
+++ b/Source/Contents/ModelKeyframes.cpp
@@ -0,0 +1,43 @@
+#include "Resource/Models/ModelResource.h"
+#include "Utility/Math/AffineMatrix.h"
+
+#include <vector>
+
+struct ModelRotationKeys : std::vector<ModelRotationKey> {
+  void Add(int frame, float x, float y, float z, float angle);
+};
+
+struct ModelScaleKeys : std::vector<ModelScaleKey> {
+  void Add(int frame, float scaleX, float scaleY, float scaleZ, float x, float y, float z, float angle);
+};
+
+// OFFSET: 0x0053FFE0
+// FUNCTION: fn_01716
+void ModelRotationKeys::Add(int frame, float x, float y, float z, float angle) {
+  angle *= 0.5f;
+  const float sine = ClientSin(angle);
+  ModelRotationKey key;
+  key.frame = frame;
+  key.rotation[0] = sine * x;
+  key.rotation[1] = sine * y;
+  key.rotation[2] = sine * z;
+  key.rotation[3] = ClientCos(angle);
+  this->push_back(key);
+}
+
+// OFFSET: 0x00540120
+// FUNCTION: fn_01717
+void ModelScaleKeys::Add(int frame, float scaleX, float scaleY, float scaleZ, float x, float y, float z, float angle) {
+  angle *= 0.5f;
+  const float sine = ClientSin(angle);
+  ModelScaleKey key;
+  key.frame = frame;
+  key.scale[0] = scaleX;
+  key.scale[1] = scaleY;
+  key.scale[2] = scaleZ;
+  key.rotation[0] = sine * x;
+  key.rotation[1] = sine * y;
+  key.rotation[2] = sine * z;
+  key.rotation[3] = ClientCos(angle);
+  this->push_back(key);
+}
diff --git a/data/compile.json b/data/compile.json
index 7d478af..c4093d9 100644
--- a/data/compile.json
+++ b/data/compile.json
@@ -359,6 +359,7 @@
   "Source/Contents/Messenger/ClientMessenger.cpp": 4,
   "Source/Contents/Messenger/MessengerMember.cpp": 4,
   "Source/Contents/Messenger/WhisperBlockMgr.cpp": 4,
+  "Source/Contents/ModelKeyframes.cpp": 4,
   "Source/Contents/Models/ModelActor.cpp": 3,
   "Source/Contents/Models/ModelActorBounds.cpp": 3,
   "Source/Contents/Models/ModelAnimation.cpp": 3,