Interact Interface

The Interact Interface defines the contract that any actor or object must implement in order to be interactable by an UInteractionComponentBase. It provides a single entry point — Interact() — which can be customized in both Blueprint and C++.

---

Interface Overview

UFUNCTION(BlueprintNativeEvent, BlueprintCallable, Category = "Interaction")
void Interact(UInteractionComponentBase* Interactor);

Parameters

Name	Type	Description
Interactor	UInteractionComponentBase*	The interaction component initiating the interaction. Typically belongs to a player or AI actor.

Behavior

When an actor or object implements this interface, it can define how it reacts when interacted with. For example — opening a door, picking up an item, triggering dialogue, or activating a mechanism.

---

Implementation Example

In C++

void AMyDoorActor::Interact_Implementation(UInteractionComponentBase* Interactor)
{
	OpenDoor();
}

In Blueprint

1. Add the Interact Interface to your Blueprint class.
2. Implement the Interact (Event) function.
3. Add your custom behavior, such as playing an animation, toggling a state, or destroying an actor.

---

Interaction Flow

Here’s how the system ties together:

1. Player calls InteractWithBest() on their UInteractionComponentBase.

2. The component:

   • Validates authority.
   • Finds the closest valid interactable using GetBestInteractable().
   • Calls Interact() on that object.

3. The target object (which implements UInteractInterface) executes its Interact() logic.

---

Example Use Cases

• Doors / Switches — Open or toggle states when interacted with.
• Items / Pickups — Add themselves to the player’s inventory.
• Dialogue / NPCs — Start conversations or trigger UI prompts.
• Machines / Consoles — Activate gameplay logic or send events.

---

Best Practices

---

Would you like me to generate a diagram + quick setup section showing how to wire this into your project (player + interactable + collider setup) — similar to your inventory plugin guide? It would make this a complete “Interaction System” documentation page.