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You're reading from Unreal Engine 4.x Scripting with C++ Cookbook Develop quality game components and solve scripting problems with the power of C++ and UE4

Product type Paperback

Published in Mar 2019

Publisher

ISBN-13 9781789809503

Length 708 pages

Edition 2nd Edition

Languages

C++

Tools

Unreal

Concepts

Game Scripting

Authors (3):

John P. Doran

Stephen Whittle

William Sherif

View More author details

Table of Contents (16) Chapters

Preface

1. UE4 Development Tools FREE CHAPTER

2. Creating Classes

3. Memory Management, Smart Pointers, and Debugging

4. Actors and Components

5. Handling Events and Delegates

6. Input and Collision

7. Communication Between Classes and Interfaces: Part I

8. Communication Between Classes and Interfaces: Part II

9. Integrating C++ and the Unreal Editor: Part I

10. Integrating C++ and the Unreal Editor: Part II

11. Working with UE4 APIs

12. Multiplayer Networking in UE4

13. AI for Controlling NPCs

14. User Interfaces - UI and UMG

15. Other Books You May Enjoy

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Creating a Behavior Tree

If a Blackboard is the shared memory of an AI, the Behavior Tree is the AI's processor, which will contain the logic of the AI. It makes decisions, and then acts on those decisions to enable an AI to actually do something when the game is running. In this recipe, we will create a Behavior Tree and then assign its Blackboard.

How to do it...

From the Content Browser under the Content folder, select Add New | Artificial Intelligence | Behavior Tree:

When asked for a name, provide EnemyBehaviorTree. Double-click on the file to open the Behavior Tree Editor.
Once opened, under the Details tab, open the AI | Behavior Tree section and verify that the Blackboard Asset property is set to EnemyBlackboard...

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Authors (3)

John P. Doran

John P. Doran is a passionate and seasoned Technical Game Designer, Software Engineer, and Author who is based in Incheon, South Korea. His passion for game development began at an early age. He later graduated from DigiPen Institute of Technology with a Bachelor of Science in Game Design. For over a decade, John has gained extensive hands-on expertise in game development working in various roles ranging from game designer to lead UI programmer working in teams consisting of just himself to over 70 people in student, mod, and professional game projects including working at LucasArts on Star Wars: 1313. Additionally, John has worked in game development education teaching in Singapore, South Korea, and the United States. To date, he has authored over 10 books pertaining to game development. John is currently a Technical Game Design Instructor at George Mason University Korea. Prior to his present ventures, he was an award-winning videographer.

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Sherif

William Sherif is a C++ programmer with more than eight years' experience in the programming world, ranging from game programming to web programming. He also worked as a university course instructor (sessional) for seven years. Additionally, he released several apps on the iTunes store, including Strum and MARSHALL OF THE ELITE SQUADRON. In the past, he has won acclaim for delivering course material in an easy-to-understand manner.

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Whittle

Stephen Whittle is a game developer and educator with nearly 10 years' development experience, most of which has been done using the Unreal Engine. He is a community contributor to the engine, having features or bug fixes included in almost every major version of the engine since its public release.

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