From 7f2c842f6d3177b4f82fe85d50a10df5cc6be547 Mon Sep 17 00:00:00 2001
From: rtw1x1 <off.tw1x1@gmail.com>
Date: Wed, 21 Jan 2026 08:34:42 +0000
Subject: [PATCH] QoL: Server-Side mark broadcast

---
 src/game/input_login.cpp | 27 ++++++++++++++++++++++++++-
 src/game/packet.h        |  8 ++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/src/game/input_login.cpp b/src/game/input_login.cpp
index fc2b3d3..ea9c46f 100644
--- a/src/game/input_login.cpp
+++ b/src/game/input_login.cpp
@@ -924,10 +924,35 @@ void CInputLogin::GuildMarkUpload(LPDESC d, const char* c_pData)
 		if (*((DWORD *) p->image + iPixel) != 0x00000000)
 			isEmpty = false;
 
+	DWORD markID = CGuildMarkManager::INVALID_MARK_ID;
+
 	if (isEmpty)
 		rkMarkMgr.DeleteMark(p->gid);
 	else
-		rkMarkMgr.SaveMark(p->gid, p->image);
+		markID = rkMarkMgr.SaveMark(p->gid, p->image);
+
+	// Broadcast mark update to all connected game clients
+	if (markID != CGuildMarkManager::INVALID_MARK_ID)
+	{
+		WORD imgIdx = static_cast<WORD>(markID / CGuildMarkImage::MARK_TOTAL_COUNT);
+
+		TPacketGCMarkUpdate packet;
+		packet.header = HEADER_GC_MARK_UPDATE;
+		packet.guildID = p->gid;
+		packet.imgIdx = imgIdx;
+
+		const DESC_MANAGER::DESC_SET & c_set_desc = DESC_MANAGER::instance().GetClientSet();
+		for (DESC_MANAGER::DESC_SET::const_iterator it = c_set_desc.begin(); it != c_set_desc.end(); ++it)
+		{
+			LPDESC pkDesc = *it;
+			if (pkDesc && pkDesc->GetCharacter())
+			{
+				pkDesc->Packet(&packet, sizeof(packet));
+			}
+		}
+
+		sys_log(0, "MARK_SERVER: GuildMarkUpload: Broadcast mark update for guild %u, imgIdx %u", p->gid, imgIdx);
+	}
 }
 
 void CInputLogin::GuildMarkIDXList(LPDESC d, const char* c_pData)
diff --git a/src/game/packet.h b/src/game/packet.h
index 989d5c3..78b3ef3 100644
--- a/src/game/packet.h
+++ b/src/game/packet.h
@@ -212,6 +212,7 @@ enum
 
 	HEADER_GC_MARK_BLOCK			= 100,
 	HEADER_GC_MARK_IDXLIST			= 102,
+	HEADER_GC_MARK_UPDATE			= 103,
 
 	HEADER_GC_TIME					= 106,
 	HEADER_GC_CHANGE_NAME			= 107,
@@ -1814,6 +1815,13 @@ typedef struct packet_mark_block
 	// 뒤에 64 x 48 x 픽셀크기(4바이트) = 12288만큼 데이터 붙음
 } TPacketGCMarkBlock;
 
+typedef struct packet_mark_update
+{
+	uint8_t	header;
+	uint32_t	guildID;
+	uint16_t	imgIdx;
+} TPacketGCMarkUpdate;
+
 typedef struct command_symbol_upload
 {
 	uint8_t	header;