From ac43540f18038bf7056bee0664569261c354d827 Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Wed, 28 Oct 2026 19:10:30 +0000
Subject: [PATCH] Decompile fn_24219 (SendClientOption)

Batch #1572 by eAthena: 0 byte-identical, 1 confirmed by peer review.

- fn_24219 SendClientOption: logic confirmed by peer review

Reviewed-by: ragnarok-clanker
Adds to the build: Source/Network/ClientOptionPacket.cpp
---
 Source/Network/ClientOptionPacket.cpp | 26 ++++++++++++++++++++++++++
 Source/Network/ClientOptionPacket.h   |  9 +++++++++
 data/compile.json                     |  1 +
 3 files changed, 36 insertions(+)
 create mode 100644 Source/Network/ClientOptionPacket.cpp
 create mode 100644 Source/Network/ClientOptionPacket.h

diff --git a/Source/Network/ClientOptionPacket.cpp b/Source/Network/ClientOptionPacket.cpp
new file mode 100644
index 0000000..4d5a3f4
--- /dev/null
+++ b/Source/Network/ClientOptionPacket.cpp
@@ -0,0 +1,26 @@
+#include "Network/ClientOptionPacket.h"
+#include "Network/Connection/Connection.h"
+#include "Network/Packets/PacketLengths.h"
+
+#include <cstdint>
+
+namespace {
+#pragma pack(push, 1)
+  struct ClientOptionPacket {
+    /* 0000 */ std::int16_t id;
+    /* 0002 */ int option;
+    /* 0006 */ int value;
+  };
+#pragma pack(pop)
+  static_assert(sizeof(ClientOptionPacket) == 10);
+}
+
+// OFFSET: 0x00E48400
+// FUNCTION: fn_24219
+void SendClientOption(unsigned char value, CConnection& connection, const PacketLengths& lengths) {
+  ClientOptionPacket packet;
+  packet.id = 0x02D8;
+  packet.option = 6;
+  packet.value = value;
+  connection.Send(lengths.FixedLength(packet.id), &packet);
+}
diff --git a/Source/Network/ClientOptionPacket.h b/Source/Network/ClientOptionPacket.h
new file mode 100644
index 0000000..d6448ca
--- /dev/null
+++ b/Source/Network/ClientOptionPacket.h
@@ -0,0 +1,9 @@
+#ifndef RAGNAROK_SOURCE_NETWORK_CLIENTOPTIONPACKET_H
+#define RAGNAROK_SOURCE_NETWORK_CLIENTOPTIONPACKET_H
+
+class CConnection;
+class PacketLengths;
+
+void SendClientOption(unsigned char value, CConnection& connection, const PacketLengths& lengths);
+
+#endif
diff --git a/data/compile.json b/data/compile.json
index 63324a0..e0f1d7b 100644
--- a/data/compile.json
+++ b/data/compile.json
@@ -444,6 +444,7 @@
   "Source/File/ResourcePath.cpp": 1,
   "Source/File/ShortcutFilename.cpp": 1,
   "Source/Network/ClientKeepalive.cpp": 0,
+  "Source/Network/ClientOptionPacket.cpp": 0,
   "Source/Network/Connection/Connection.cpp": 0,
   "Source/Network/Connection/ConnectionBuffer.cpp": 0,
   "Source/Network/Connection/ConnectionRuntime.cpp": 0,