Core/Items: Allow moving openable items that have been opened once (except currently opened item)

Closes #30686
Closes #31184

Author: Shauren

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

@@ -10376,8 +10376,8 @@ InventoryResult Player::CanStoreItem(uint8 bag, uint8 slot, ItemPosCountVec &des
 
     if (pItem)
     {
-        // item used
-        if (pItem->m_lootGenerated)
+        // swapping/merging with currently looted item
+        if (GetLootGUID() == pItem->GetGUID())
         {
             if (no_space_count)
                 *no_space_count = count;
@@ -10880,8 +10880,7 @@ InventoryResult Player::CanStoreItems(Item** items, int count, uint32* itemLimit
         if (!pProto)
             return EQUIP_ERR_ITEM_NOT_FOUND;
 
-        // item used
-        if (item->m_lootGenerated)
+        if (item->m_lootGenerated || GetLootGUID() == item->GetGUID())
             return EQUIP_ERR_LOOT_GONE;
 
         // item it 'bind'
@@ -11130,8 +11129,7 @@ InventoryResult Player::CanEquipItem(uint8 slot, uint16 &dest, Item* pItem, bool
         ItemTemplate const* pProto = pItem->GetTemplate();
         if (pProto)
         {
-            // item used
-            if (pItem->m_lootGenerated)
+            if (GetLootGUID() == pItem->GetGUID())
                 return EQUIP_ERR_LOOT_GONE;
 
             if (pItem->IsBindedNotWith(this))
@@ -11297,8 +11295,7 @@ InventoryResult Player::CanUnequipItem(uint16 pos, bool swap) const
     if (!pProto)
         return EQUIP_ERR_ITEM_NOT_FOUND;
 
-    // item used
-    if (pItem->m_lootGenerated)
+    if (GetLootGUID() == pItem->GetGUID())
         return EQUIP_ERR_LOOT_GONE;
 
     if (IsCharmed())
@@ -11336,8 +11333,7 @@ InventoryResult Player::CanBankItem(uint8 bag, uint8 slot, ItemPosCountVec &dest
     if (!pProto)
         return swap ? EQUIP_ERR_CANT_SWAP : EQUIP_ERR_ITEM_NOT_FOUND;
 
-    // item used
-    if (pItem->m_lootGenerated)
+    if (GetLootGUID() == pItem->GetGUID())
         return EQUIP_ERR_LOOT_GONE;
 
     if (pItem->IsBindedNotWith(this))