Book Image

Blueprints Visual Scripting for Unreal Engine - Second Edition

By : Marcos Romero, Brenden Sewell
Book Image

Blueprints Visual Scripting for Unreal Engine - Second Edition

By: Marcos Romero, Brenden Sewell

Overview of this book

Blueprints is the visual scripting system in Unreal Engine that enables programmers to create baseline systems and can be extended by designers. This book helps you explore all the features of the Blueprint Editor and guides you through using Variables, Macros, and Functions. You’ll also learn about object-oriented programming (OOP) and discover the Gameplay Framework. In addition to this, you’ll learn how Blueprint Communication allows one Blueprint to access information from another Blueprint. Later chapters will focus on building a fully functional game using a step-by-step approach. You’ll start with a basic first-person shooter (FPS) template, and each chapter will build on the prototype to create an increasingly complex and robust game experience. You’ll then progress from creating basic shooting mechanics to more complex systems, such as user interface elements and intelligent enemy behavior. The skills you will develop using Blueprints can also be employed in other gaming genres. In the concluding chapters, the book demonstrates how to use arrays, maps, enums, and vector operations. Finally, you’ll learn how to build a basic VR game. By the end of this book, you’ll have learned how to build a fully functional game and will have the skills required to develop an entertaining experience for your audience.
Table of Contents (22 chapters)
Free Chapter
Section 1: Blueprint Fundamentals
Section 2: Developing a Game
Section 3: Enhancing the Game
Section 4: Advanced Blueprints

Direct Blueprint Communication

Direct Blueprint Communication is a simple method of communication between Blueprints/Actors. It is used by creating an object reference variable that stores a reference to another Actor/Blueprint. Then, we can call Actions using this object reference variable as the Target input parameter of these Actions.

As an example, let's create a Blueprint called BP_LightSwitch. The initials of BP_ are a naming convention used to facilitate the identification of a Blueprint asset. BP_LightSwitch has an object reference variable of the Point Light type that references a Point Light placed in the Level. When the player overlaps the BP_LightSwitch Blueprint on the Level, it toggles the visibility of the Point Light.

Follow these steps:

  1. Create or use an existing project that contains starter content.
  2. Click the Add New button in the Content Browser and choose...