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ULootComponent is the runtime piece that actually rolls a LootTable and returns/creates items. You typically add it to:
  • Chests
  • Enemies
  • Resource nodes (trees, rocks, ore veins)
  • Any “loot source” actor in your game

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Adding to Actors

Blueprint
  1. Open your Actor Blueprint (Chest, Enemy, Resource Node, etc.)
  2. Add Component → Loot Component
  3. Configure in details:
  • Loot Table: LT_YourLootTable
  • Single Use: true or false
  • Minimum Rarity: None or a specific tag
  • Item Level: 1 (or your scaling level)
  • Auto Detect Level: true/false
    • If true, reads a level property from the owning actor (e.g. CharacterLevel)
C++ 
// In Actor.h
UPROPERTY(VisibleAnywhere, BlueprintReadOnly)
ULootComponent* LootComponent;

// In Actor.cpp constructor
LootComponent = CreateDefaultSubobject<ULootComponent>(TEXT("LootComponent"));
LootComponent->LootTable = LT_ChestLoot;    // Assigned via C++ or in BP
LootComponent->bSingleUse = true;
LootComponent->ItemLevel  = 1;

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Generating Loot

GenerateLoot rolls the table and returns an FLootResult. Blueprint 
LootComponent → Generate Loot
   Return: Loot Result (FLootResult)
You can then:
  • Iterate Loot Result.Spawned Items
  • Add each item to inventory, or
  • Spawn WorldItemActor in the world
C++ 
FLootResult Result = LootComponent->GenerateLoot();

for (const FLootedItem& LootedItem : Result.SpawnedItems)
{
    UE_LOG(LogTemp, Log, TEXT("Dropped: %s x%d at rarity %s"),
        *LootedItem.ItemData->ItemID.ToString(),
        LootedItem.Quantity,
        *LootedItem.RolledRarity.ToString()
    );
}

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Checking / Resetting Loot State

Has Been Looted? 
bool bAlreadyLooted = LootComponent->HasBeenLooted();
if (bAlreadyLooted && LootComponent->bSingleUse)
{
    ShowNotification(TEXT("Already looted"));
    return;
}
Blueprint: Has Been Looted node on LootComponent. Reset Loot For respawnable containers/nodes:
  • Blueprint: Reset Loot node
  • C++: LootComponent->ResetLoot();
This clears internal state so the next GenerateLoot call re-rolls the table.