fix(Core/Loot): (#7452)

- Players that did not participate in killing dungeon boss are not eligible to get loot.
- Players that are too far away from the looted object are not eligible to get loot.
- Players that released spirit and were outside the dungeon when the loot has been released are eligible to get loot.
- Players that have pending bind are not eligible to get loot.
- Properly get loot recipient for some chests in dungeons.
- All above fixes should work in any loot mode (group loot, master loot, etc.)
- Closes #2104.

src/server/game/Entities/Creature/Creature.cpp

@@ -1139,22 +1139,48 @@ void Creature::SetLootRecipient(Unit* unit, bool withGroup)
         m_lootRecipient.Clear();
         m_lootRecipientGroup = 0;
         RemoveFlag(UNIT_DYNAMIC_FLAGS, UNIT_DYNFLAG_LOOTABLE | UNIT_DYNFLAG_TAPPED);
+        ResetAllowedLooters();
         return;
     }
 
-    //if (unit->GetTypeId() != TYPEID_PLAYER && !unit->IsVehicle())
-    //    return;
-
     Player* player = unit->GetCharmerOrOwnerPlayerOrPlayerItself();
     if (!player)                                             // normal creature, no player involved
         return;
 
     m_lootRecipient = player->GetGUID();
 
+    Map* map = GetMap();
+    if (map && map->IsDungeon() && (isWorldBoss() || IsDungeonBoss()))
+    {
+        AddAllowedLooter(m_lootRecipient);
+    }
+
     if (withGroup)
     {
         if (Group* group = player->GetGroup())
+        {
             m_lootRecipientGroup = group->GetGUID().GetCounter();
+
+            if (map && map->IsDungeon() && (isWorldBoss() || IsDungeonBoss()))
+            {
+                Map::PlayerList const& PlayerList = map->GetPlayers();
+                for (Map::PlayerList::const_iterator i = PlayerList.begin(); i != PlayerList.end(); ++i)
+                {
+                    if (Player* groupMember = i->GetSource())
+                    {
+                        if (groupMember->IsGameMaster() || groupMember->IsSpectator())
+                        {
+                            continue;
+                        }
+
+                        if (groupMember->GetGroup() == group)
+                        {
+                            AddAllowedLooter(groupMember->GetGUID());
+                        }
+                    }
+                }
+            }
+        }
     }
     else
         m_lootRecipientGroup = 0;

src/server/game/Entities/Creature/Creature.h

@@ -198,6 +198,7 @@ public:
     Loot loot;
     [[nodiscard]] ObjectGuid GetLootRecipientGUID() const { return m_lootRecipient; }
     [[nodiscard]] Player* GetLootRecipient() const;
+    [[nodiscard]] ObjectGuid::LowType GetLootRecipientGroupGUID() const { return m_lootRecipientGroup; }
     [[nodiscard]] Group* GetLootRecipientGroup() const;
     [[nodiscard]] bool hasLootRecipient() const { return m_lootRecipient || m_lootRecipientGroup; }
     bool isTappedBy(Player const* player) const;                          // return true if the creature is tapped by the player or a member of his party.
@@ -374,7 +375,7 @@ protected:
     static float _GetHealthMod(int32 Rank);
 
     ObjectGuid m_lootRecipient;
-    uint32 m_lootRecipientGroup;
+    ObjectGuid::LowType m_lootRecipientGroup;
 
     /// Timers
     time_t m_corpseRemoveTime;                          // (msecs)timer for death or corpse disappearance