From fda2d77ac924bec4ede9be57af107f8f56b36a4e Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Thu, 29 Oct 2026 23:51:37 +0000
Subject: [PATCH] Decompile fn_18254 (LoadLuaResource)

Batch #3857 by ragnarok-clanker: 0 byte-identical, 1 confirmed by peer review.

- fn_18254 LoadLuaResource: logic confirmed by peer review

Peer-reviewed-by: Yommy, youko
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
---
 Source/Script/LuaFileOperations.cpp | 23 +++++++++++++++++++++++
 Source/Script/LuaFileOperations.h   |  3 +++
 2 files changed, 26 insertions(+)

diff --git a/Source/Script/LuaFileOperations.cpp b/Source/Script/LuaFileOperations.cpp
index e924ffa3..e7320024 100644
--- a/Source/Script/LuaFileOperations.cpp
+++ b/Source/Script/LuaFileOperations.cpp
@@ -1,4 +1,5 @@
 #include "Script/LuaFileOperations.h"
+#include "File/File.h"
 #include "File/FileCreation.h"
 
 extern "C" {
@@ -7,6 +8,7 @@ extern "C" {
 
 #include <cstdio>
 #include <io.h>
+#include <regex>
 #include <string>
 
 // OFFSET: 0x00AFE7D0
@@ -26,3 +28,24 @@ int LuaChangeDirectoryOfDatas(lua_State* state) {
 
   return 0;
 }
+
+// OFFSET: 0x00AF6580
+// FUNCTION: fn_18254
+bool LoadLuaResource(lua_State* state, const std::string& name, unsigned char allowLuaFallback) {
+  std::string resolved = name;
+  CFile file;
+  if (!file.Open(name.c_str(), 0, false, false)) {
+    if (allowLuaFallback != 1) {
+      return false;
+    }
+
+    resolved = std::regex_replace(name, std::regex("\\.lub$"), ".lua");
+    if (!file.Open(resolved.c_str(), 0, false, false)) {
+      return false;
+    }
+  }
+
+  const bool loaded = luaL_loadbuffer(state, static_cast<const char*>(file.GetData()), file.GetSize(), resolved.c_str()) == 0;
+  file.Close();
+  return loaded;
+}
diff --git a/Source/Script/LuaFileOperations.h b/Source/Script/LuaFileOperations.h
index 4bf669c5..d5cfe7d0 100644
--- a/Source/Script/LuaFileOperations.h
+++ b/Source/Script/LuaFileOperations.h
@@ -1,8 +1,11 @@
 #ifndef RAGNAROK_SOURCE_SCRIPT_LUAFILEOPERATIONS_H
 #define RAGNAROK_SOURCE_SCRIPT_LUAFILEOPERATIONS_H
 
+#include <string>
+
 struct lua_State;
 
 int LuaChangeDirectoryOfDatas(lua_State* state);
+bool LoadLuaResource(lua_State* state, const std::string& name, unsigned char allowLuaFallback);
 
 #endif