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Slot Structure

Each inventory slot holds:
  • FItemInstance: The item and its properties
  • Cooldown information: For usage cooldowns
  • Index: Slot position (0 to MaxSlots-1)
struct FInventorySlot
{
    FItemInstance Item;
    float CooldownTime;
    float CooldownRemaining;
};

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Configuration

Max Slots The maximum number of item slots: 
Max Slots: 30    // Standard inventory
Max Slots: 9     // Hotbar
Max Slots: 50    // Large chest
Blueprint: 
InventoryComponent->MaxSlots = 30;
C++: 
InventoryComponent->SetMaxSlots(30);
Inventory Type 
enum class EInventoryType : uint8
{
    Standard,      // Regular inventory
    Hotbar,        // Quick access bar
    Container,     // World container
    Equipment      // Equipment slots
};
Set the type to categorize inventory behavior: 
Inventory Type: Standard