Core/Dungeon Finder: Implemented Luck of the Draw buff

src/server/game/Maps/Map.cpp

@@ -30,6 +30,7 @@
 #include "MapManager.h"
 #include "ObjectMgr.h"
 #include "Group.h"
+#include "LFGMgr.h"
 
 union u_map_magic
 {
@@ -2318,6 +2319,13 @@ bool InstanceMap::AddPlayerToMap(Player* player)
                         ASSERT(playerBind->save == mapSave);
                 }
             }
+
+            if (group && group->isLFGGroup())
+                if (uint32 dungeonId = sLFGMgr->GetDungeon(group->GetGUID(), true))
+                    if (LFGDungeonEntry const* dungeon = sLFGDungeonStore.LookupEntry(dungeonId))
+                        if (LFGDungeonEntry const* randomDungeon = sLFGDungeonStore.LookupEntry(*(sLFGMgr->GetSelectedDungeons(player->GetGUID()).begin())))
+                            if (dungeon->map == GetId() && dungeon->difficulty == GetDifficulty() && randomDungeon->type == LFG_TYPE_RANDOM)
+                                player->CastSpell(player, LFG_SPELL_LUCK_OF_THE_DRAW, true);
         }
 
         // for normal instances cancel the reset schedule when the