Unreal Engine 4 Scripting with C++ Cookbook

Implementing UInterface functions in Blueprint

One of the key advantages of UInterface in Unreal is the ability for users to implement UInterface functions in the editor. This means the interface can be implemented strictly in Blueprint without needing any C++ code, which is helpful to designers.

How to do it...

1. Create a new UInterface called AttackAvoider.
2. Add the following function declaration to the header:

   UFUNCTION(BlueprintImplementableEvent, BlueprintCallable, Category = AttackAvoider)
   voidAttackIncoming(AActor* AttackActor);

3. Create a new Blueprint Class within the Editor:
   
4. Base the class on Actor:
5. Open Class Settings:
6. Click on the drop-down menu ...