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

Changing direction

If you were to compile the Blueprint, save, and play the game now, what would you expect to see? The target Cylinder would move according to our speed and direction as soon as the game began. However, since we don't have any instructions that cause the target to stop moving, it would proceed in the same direction for as long as the game runs, even moving through objects and out of the Level we created! To address this, we need logic that will change the target's direction periodically. This will result in a target that moves back and forth between two points regularly, much like a shooting gallery target.

To do this, we have to set up two nodes that will set the direction variable we created on two different values. Drag the direction variable into empty grid space and choose the SET option. This results in a node with x, y, and z axis fields. We...