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
1
Section 1: Blueprint Fundamentals
6
Section 2: Developing a Game
11
Section 3: Enhancing the Game
16
Section 4: Advanced Blueprints

Flow control nodes

There are some nodes that control the flow of the execution of a Blueprint. These nodes determine the execution path based on conditions. Let's learn about the main types of flow control nodes.

Switch nodes

A switch node determines the flow of execution based on the value of an input variable. There are different types of switch nodes. The next screenshot shows an example of the Switch on Int node:

The Selection input parameter receives an integer value that determines the output pin that will be executed. If the input value has no pin, then the Default pin will execute. You can change the start index in the Details panel of Switch on Int. The output pins are added by using the Add pin + option.

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