Unreal Engine 4 Scripting with C++ Cookbook

Creating a custom Scene Component

Scene Components are a subclass of Actor Components that have a transform, that is, a relative location, rotation, and scale. Just like Actor Components, Scene Components aren't rendered themselves, but can use their transform for various things, such as spawning other objects at a fixed offset from an Actor.

How to do it...

1. Create a custom SceneComponent called ActorSpawnerComponent. Make the following changes to the header:

   UFUNCTION()
   void Spawn();
   UPROPERTY()
   TSubclassOf<AActor> ActorToSpawn;

2. Add the following function implementation to the cpp file:

   void UActorSpawnerComponent::Spawn() { UWorld* TheWorld = GetWorld(); if (TheWorld != nullptr) { FTransform ComponentTransform(this->GetComponentTransform()); TheWorld->SpawnActor(ActorToSpawn,&ComponentTransform); ...