Book Image

Blueprints Visual Scripting for Unreal Engine 5 - Third Edition

By : Marcos Romero, Brenden Sewell
5 (1)
Book Image

Blueprints Visual Scripting for Unreal Engine 5 - Third Edition

5 (1)
By: Marcos Romero, Brenden Sewell

Overview of this book

Unreal Engine's Blueprint visual scripting system enables designers to script their games and programmers to create base elements that can be extended by designers. With this book, you'll explore all the features of the Blueprint Editor, along with expert tips, shortcuts, and best practices. The book guides you through using variables, macros, and functions, and helps you learn about object-oriented programming (OOP). You'll discover the Gameplay Framework and advance to learning how Blueprint Communication allows one Blueprint to access information from another Blueprint. Later chapters focus on building a fully functional game step by step. 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 book demonstrates how to use arrays, maps, enums, and vector operations and introduces the elements needed for VR game development. In the final chapters, you’ll learn how to implement procedural generation and create a product configurator. By the end of this book, you'll have learned how to build a fully functional game and have the skills required to develop an entertaining experience for your audience.
Table of Contents (28 chapters)
1
Part 1: Blueprint Fundamentals
6
Part 2: Developing a Game
11
Part 3: Enhancing the Game
16
Part 4: Advanced Blueprints
21
Part 5: Extra Tools

Creating expressions with operators

Operators are used to create expressions using variables and values. These operators are found in Context Menu within the Utilities | Operators category.

The main types of operators are arithmetic, relational, and logical.

Arithmetic operators

The arithmetic operators (+, -, x, and /) can be used to create mathematical expressions in Blueprints. The following screenshot shows the equivalent nodes in Blueprints. These operators receive two input values on the left and give the operation result on the right. The arithmetic operators can have more than two input parameters; just click on the Add pin button on the node to add another input parameter. The input values can be obtained from a data wire or entered directly in the node:

Figure 2.8 – Arithmetic operation nodes

Note

The * symbol is the multiplication operator in programming languages. Blueprints also recognize * as the multiplication operator but...