Core/LFG Fixed several bugs/ missing Features:

 - Added Dungeon Deserteur and Cooldown Debuff
 - Allow LFG groups with ID to rejoin queue (unfinished dungeon)
 - Every LFG-Party Member is able to rejoin LFG queue (blizzlike)
 - Similar to BG-Groups Lfg-Groups will only disband if there is no player left
 - In-Dungeon Lfg-Groups always join queues with high priority

src/server/game/DungeonFinding/LFGMgr.cpp

@@ -383,7 +383,10 @@ void LFGMgr::InitializeLockedDungeons(Player* player)
         else if (DisableMgr::IsDisabledFor(DISABLE_TYPE_MAP, dungeon->map, player))
             locktype = LFG_LOCKSTATUS_RAID_LOCKED;
         else if (dungeon->difficulty > DUNGEON_DIFFICULTY_NORMAL && player->GetBoundInstance(dungeon->map, Difficulty(dungeon->difficulty)))
-            locktype = LFG_LOCKSTATUS_RAID_LOCKED;
+        {
+            if (!player->GetGroup() || !player->GetGroup()->isLFGGroup() || GetDungeon(player->GetGroup()->GetGUID(),true) != dungeon->ID || GetState(player->GetGroup()->GetGUID()) != LFG_STATE_DUNGEON)
+                locktype = LFG_LOCKSTATUS_RAID_LOCKED;
+        }
         else if (dungeon->minlevel > level)
             locktype = LFG_LOCKSTATUS_TOO_LOW_LEVEL;
         else if (dungeon->maxlevel < level)
@@ -1080,6 +1083,11 @@ void LFGMgr::UpdateRoleCheck(uint64 gguid, uint64 guid /* = 0 */, uint8 roles /*
         }
 
         m_QueueInfoMap[gguid] = pqInfo;
+        if(GetState(gguid) != LFG_STATE_NONE)
+        {
+            LfgGuidList& currentQueue = m_currentQueue[team]; 
+            currentQueue.push_front(gguid);         
+        }
         AddToQueue(gguid, team);
     }
 
@@ -1825,6 +1833,7 @@ void LFGMgr::RewardDungeonDoneFor(const uint32 dungeonId, Player* player)
 
     // Give rewards
     sLog->outDebug(LOG_FILTER_LFG, "LFGMgr::RewardDungeonDoneFor: [" UI64FMTD "] done dungeon %u, %s previously done.", player->GetGUID(), GetDungeon(gguid), index > 0 ? " " : " not");
+    player->CastSpell(player,LFG_SPELL_DUNGEON_COOLDOWN,true);
     player->GetSession()->SendLfgPlayerReward(dungeon->Entry(), GetDungeon(gguid, false), index, reward, qReward);
 }
 

src/server/game/DungeonFinding/LFGScripts.cpp

@@ -84,10 +84,10 @@ void LFGScripts::OnRemoveMember(Group* group, uint64 guid, RemoveMethod method,
     sLFGMgr->ClearState(guid);
     if (Player* player = ObjectAccessor::FindPlayer(guid))
     {
-        /*
-        if (method == GROUP_REMOVEMETHOD_LEAVE)
-            // Add deserter flag
-        else if (group->isLfgKickActive())
+
+        if (method == GROUP_REMOVEMETHOD_LEAVE && sLFGMgr->GetState(gguid) != LFG_STATE_FINISHED_DUNGEON)
+            player->CastSpell(player,LFG_SPELL_DUNGEON_DESERTER,true);// Add deserter flag
+        /*else if (group->isLfgKickActive())
             // Update internal kick cooldown of kicked
         */
 

src/server/game/Entities/Player/Player.cpp

@@ -2326,6 +2326,10 @@ bool Player::TeleportToBGEntryPoint()
     if (m_bgData.joinPos.m_mapId == MAPID_INVALID)
         return false;
 
+    Group* grp = this->GetGroup();
+    if (grp && grp->isLFGGroup() && grp->GetMembersCount() == 1)
+        grp->Disband();
+
     ScheduleDelayedOperation(DELAYED_BG_MOUNT_RESTORE);
     ScheduleDelayedOperation(DELAYED_BG_TAXI_RESTORE);
     ScheduleDelayedOperation(DELAYED_BG_GROUP_RESTORE);

src/server/game/Groups/Group.cpp

@@ -397,7 +397,7 @@ bool Group::RemoveMember(uint64 guid, const RemoveMethod &method /*= GROUP_REMOV
         return m_memberSlots.size();
 
     // remove member and change leader (if need) only if strong more 2 members _before_ member remove (BG allow 1 member group)
-    if (GetMembersCount() > (isBGGroup() ? 1u : 2u))
+    if (GetMembersCount() > ((isBGGroup() || isLFGGroup()) ? 1u : 2u))
     {
         Player* player = ObjectAccessor::FindPlayer(guid);
         if (player)
@@ -487,6 +487,12 @@ bool Group::RemoveMember(uint64 guid, const RemoveMethod &method /*= GROUP_REMOV
 
         SendUpdate();
 
+        if (isLFGGroup() && GetMembersCount() == 1 && !GetFirstMember()->getSource()->GetMap()->IsDungeon())
+        {
+            Disband();
+            return false;
+        }
+
         return true;
     }
     // If group size before player removal <= 2 then disband it

src/server/game/Server/Protocol/Handlers/LFGHandler.cpp

@@ -48,7 +48,8 @@ void BuildPartyLockDungeonBlock(WorldPacket& data, const LfgLockPartyMap& lockMa
 void WorldSession::HandleLfgJoinOpcode(WorldPacket& recv_data)
 {
     if (!sWorld->getBoolConfig(CONFIG_DUNGEON_FINDER_ENABLE) ||
-        (GetPlayer()->GetGroup() && GetPlayer()->GetGroup()->GetLeaderGUID() != GetPlayer()->GetGUID()))
+        (GetPlayer()->GetGroup() && GetPlayer()->GetGroup()->GetLeaderGUID() != GetPlayer()->GetGUID() &&
+        (GetPlayer()->GetGroup()->GetMembersCount() == MAXGROUPSIZE || !GetPlayer()->GetGroup()->isLFGGroup())))
     {
         recv_data.rfinish();
         return;