fix(Core): fix chests not despawning when opened in group (#5371)

src/server/game/Entities/GameObject/GameObject.cpp

@@ -60,6 +60,7 @@ GameObject::GameObject() : WorldObject(false), MovableMapObject(),
     m_lootGenerationTime = 0;
 
     ResetLootMode(); // restore default loot mode
+    loot.sourceGameObject = this;
     m_stationaryPosition.Relocate(0.0f, 0.0f, 0.0f, 0.0f);
 }
 

src/server/game/Groups/Group.cpp

@@ -1494,6 +1494,15 @@ void Group::CountTheRoll(Rolls::iterator rollI, Map* allowedMap)
             item->is_blocked = false;
     }
 
+    {
+        Loot* loot = roll->getLoot();
+        if (loot->isLooted() && loot->sourceGameObject != nullptr && loot->sourceGameObject->GetGOInfo()->type == GAMEOBJECT_TYPE_CHEST)
+        {
+            // Deactivate chest if the last item was rolled in group
+            loot->sourceGameObject->SetLootState(GO_JUST_DEACTIVATED);
+        }
+    }
+
     RollId.erase(rollI);
     delete roll;
 }

src/server/game/Loot/LootMgr.h

@@ -109,6 +109,7 @@ enum LootSlotType
 class Player;
 class LootStore;
 class ConditionMgr;
+class GameObject;
 struct Loot;
 
 struct LootStoreItem
@@ -311,6 +312,7 @@ struct Loot
 
     // GUIDLow of container that holds this loot (item_instance.entry), set for items that can be looted
     uint32 containerId{0};
+    GameObject* sourceGameObject;
 
     Loot(uint32 _gold = 0) : gold(_gold) { }
     ~Loot() { clear(); }