From 69e59653ed3cce276e53cf12f9774dec2d444979 Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Wed, 28 Oct 2026 20:21:01 +0000
Subject: [PATCH] Decompile fn_22575 (GetSpriteLayerOrder)

Batch #1688 by eAthena: 0 byte-identical, 1 confirmed by peer review.

- fn_22575 GetSpriteLayerOrder: logic confirmed by peer review

Reviewed-by: ragnarok-clanker
Adds to the build: Source/Contents/SpriteLayerOrder.cpp
---
 Source/Contents/SpriteLayerOrder.cpp | 61 ++++++++++++++++++++++++++++
 Source/Contents/SpriteLayerOrder.h   |  8 ++++
 data/compile.json                    |  1 +
 3 files changed, 70 insertions(+)
 create mode 100644 Source/Contents/SpriteLayerOrder.cpp
 create mode 100644 Source/Contents/SpriteLayerOrder.h

diff --git a/Source/Contents/SpriteLayerOrder.cpp b/Source/Contents/SpriteLayerOrder.cpp
new file mode 100644
index 0000000..76208f7
--- /dev/null
+++ b/Source/Contents/SpriteLayerOrder.cpp
@@ -0,0 +1,61 @@
+#include "Contents/SpriteLayerOrder.h"
+#include "Resource/ImfResource.h"
+
+// OFFSET: 0x00DAAB00
+// FUNCTION: fn_22575
+int GetSpriteLayerOrder(CImfRes* imfRes, int layer, int baseAction, int action, int motion) {
+  switch (action - baseAction) {
+  case 0:
+  case 1:
+  case 6:
+  case 7:
+    switch (8 - layer) {
+    case 0:
+      return imfRes->GetLayer(1, action, motion);
+    case 1:
+      return imfRes->GetLayer(0, action, motion);
+    case 2:
+      return 2;
+    case 3:
+      return 3;
+    case 4:
+      return 4;
+    case 5:
+      return 8;
+    case 6:
+      return 5;
+    case 7:
+      return 6;
+    case 8:
+      return 7;
+    }
+    break;
+  case 2:
+  case 3:
+  case 4:
+  case 5:
+    switch (8 - layer) {
+    case 0:
+      return 7;
+    case 1:
+      return imfRes->GetLayer(1, action, motion);
+    case 2:
+      return imfRes->GetLayer(0, action, motion);
+    case 3:
+      return 2;
+    case 4:
+      return 3;
+    case 5:
+      return 4;
+    case 6:
+      return 8;
+    case 7:
+      return 5;
+    case 8:
+      return 6;
+    }
+    break;
+  }
+
+  return 9;
+}
diff --git a/Source/Contents/SpriteLayerOrder.h b/Source/Contents/SpriteLayerOrder.h
new file mode 100644
index 0000000..c3e780c
--- /dev/null
+++ b/Source/Contents/SpriteLayerOrder.h
@@ -0,0 +1,8 @@
+#ifndef RAGNAROK_SOURCE_CONTENTS_SPRITELAYERORDER_H
+#define RAGNAROK_SOURCE_CONTENTS_SPRITELAYERORDER_H
+
+class CImfRes;
+
+int GetSpriteLayerOrder(CImfRes* imfRes, int layer, int baseAction, int action, int motion);
+
+#endif
diff --git a/data/compile.json b/data/compile.json
index c4093d9..ff3b3fe 100644
--- a/data/compile.json
+++ b/data/compile.json
@@ -422,6 +422,7 @@
   "Source/Contents/Sound/SoundConfiguration.cpp": 4,
   "Source/Contents/Sound/SoundMaker.cpp": 4,
   "Source/Contents/Sound/SoundMgr.cpp": 4,
+  "Source/Contents/SpriteLayerOrder.cpp": 4,
   "Source/Contents/SpriteRidingPolicy.cpp": 4,
   "Source/Contents/Store/MCStoreInfoBackup.cpp": 4,
   "Source/Contents/Store/MCStoreInfoBackupAsyncWork.cpp": 4,