Harden melee sync authority

src/game/char.cpp

@@ -189,6 +189,7 @@ void CHARACTER::Initialize()
 	m_pkDestroyWhenIdleEvent = NULL;
 
 	m_pkChrSyncOwner = NULL;
+	m_dwSyncOwnerLockExpire = 0;
 
 	memset(&m_points, 0, sizeof(m_points));
 	memset(&m_pointsInstant, 0, sizeof(m_pointsInstant));
@@ -4317,6 +4318,7 @@ bool CHARACTER::SetSyncOwner(LPCHARACTER ch, bool bRemoveFromList)
 
 		// 리스트에서 제거하지 않더라도 포인터는 NULL로 셋팅되어야 한다.
 		m_pkChrSyncOwner = NULL;
+		m_dwSyncOwnerLockExpire = 0;
 	}
 	else
 	{
@@ -4345,6 +4347,7 @@ bool CHARACTER::SetSyncOwner(LPCHARACTER ch, bool bRemoveFromList)
 
 			m_pkChrSyncOwner = ch;
 			m_pkChrSyncOwner->m_kLst_pkChrSyncOwned.push_back(this);
+			m_dwSyncOwnerLockExpire = 0;
 
 			// SyncOwner가 바뀌면 LastSyncTime을 초기화한다.
 			static const timeval zero_tv = {0, 0};
@@ -4401,6 +4404,28 @@ bool CHARACTER::IsSyncOwner(LPCHARACTER ch) const
 	return false;
 }
 
+void CHARACTER::LockSyncOwner(DWORD dwDurationMs)
+{
+	if (!m_pkChrSyncOwner || !dwDurationMs)
+		return;
+
+	const DWORD dwNow = get_dword_time();
+	const DWORD dwExpire = dwNow + dwDurationMs;
+
+	if (m_dwSyncOwnerLockExpire < dwExpire)
+		m_dwSyncOwnerLockExpire = dwExpire;
+}
+
+bool CHARACTER::IsSyncOwnerLocked() const
+{
+	return m_pkChrSyncOwner && get_dword_time() < m_dwSyncOwnerLockExpire;
+}
+
+bool CHARACTER::IsSyncOwnerLockedFor(LPCHARACTER ch) const
+{
+	return ch && m_pkChrSyncOwner == ch && get_dword_time() < m_dwSyncOwnerLockExpire;
+}
+
 void CHARACTER::SetParty(LPPARTY pkParty)
 {
 	if (pkParty == m_pkParty)