> ## Documentation Index
> Fetch the complete documentation index at: https://docs.warpathstudios.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Auto-Refill System

> The hotbar can “remember” what was assigned to each slot:

### How It Works

The hotbar can “remember” what was assigned to each slot:

1. Assign an item to a hotbar slot
2. The item’s **ItemID** is stored as this slot’s *sticky* ID
3. Use or drop all items until the slot is empty
4. The slot stays empty, but the sticky ID remains
5. When you later obtain that item again (via pickup, crafting, etc.), the hotbar:

   * Refills that empty slot first
   * Sends any remaining items to the main inventory

This keeps the hotbar layout stable even as items are consumed.

### Configuration

**Enable/disable auto-refill:**

* Blueprint: set `Auto Refill Enabled` on `HotbarComponent`
* C++: `HotbarComponent->bAutoRefillEnabled = true;`

**Manual refill:**

```
HotbarComponent->TryAutoFillFromInventory(SlotIndex);
```

**Check if a slot is waiting for refill:**

```
bool bWaiting = HotbarComponent->IsWaitingForRefill(SlotIndex);
```

**Clear sticky memory:**

```
HotbarComponent->ClearStickyID(SlotIndex);
```

C++

```
HotbarComponent->bAutoRefillEnabled = true;

HotbarComponent->TryAutoFillFromInventory(SlotIndex);

bool bWaiting = HotbarComponent->IsWaitingForRefill(SlotIndex);

HotbarComponent->ClearStickyID(SlotIndex);
```