Unreal Engine 4 Scripting with C++ Cookbook

Attaching components to create a hierarchy

When creating custom Actors from components, it is important to consider the concept of Attaching. Attaching components together creates a relationship where transformations applied to the parent component will also affect the components that are attached to it.

How to do it...

1. Create a new class based on Actor using the editor, and call it HierarchyActor.
2. Add the following properties to your new class:

   UPROPERTY()
   USceneComponent* Root;
   UPROPERTY()
   USceneComponent* ChildSceneComponent;
   UPROPERTY()
   UStaticMeshComponent* BoxOne;
   UPROPERTY()
   UStaticMeshComponent* BoxTwo;

3. Add the following code to the class constructor:

   Root = CreateDefaultSubobject<USceneComponent>("Root"); ChildSceneComponent = CreateDefaultSubobject<USceneComponent>("ChildSceneComponent"); ...