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Game Development Projects with Unreal Engine

You're reading from  Game Development Projects with Unreal Engine

Product type Book
Published in Nov 2020
Publisher Packt
ISBN-13 9781800209220
Pages 822 pages
Edition 1st Edition
Languages
Authors (4):
Hammad Fozi Hammad Fozi
Profile icon Hammad Fozi
Gonçalo Marques Gonçalo Marques
Profile icon Gonçalo Marques
David Pereira David Pereira
Profile icon David Pereira
Devin Sherry Devin Sherry
Profile icon Devin Sherry
View More author details

Table of Contents (19) Chapters

Preface
1. Unreal Engine Introduction 2. Working with Unreal Engine 3. Character Class Components and Blueprint Setup 4. Player Input 5. Line Traces 6. Collision Objects 7. UE4 Utilities 8. User Interfaces 9. Audio-Visual Elements 10. Creating a SuperSideScroller Game 11. Blend Spaces 1D, Key Bindings, and State Machines 12. Animation Blending and Montages 13. Enemy Artificial Intelligence 14. Spawning the Player Projectile 15. Collectibles, Power-Ups, and Pickups 16. Multiplayer Basics 17. Remote Procedure Calls 18. Gameplay Framework Classes in Multiplayer

Visualizing the Line Trace

When creating new logic that makes use of Line Traces, it is very useful to actually visualize the Line Trace while it's being executed, which is something that the Line Trace function doesn't allow you to do. In order to do that, we must use a set of helper debug functions that can draw objects dynamically at runtime, such as lines, cubes, spheres, and so on.

Let's then add a visualization of our Line Trace. The first thing we must do in order to use the debug functions is to add the following include below our last include line:

#include "DrawDebugHelpers.h"

We will want to call the DrawDebugLine function in order to visualize the Line Trace, which needs the following inputs, very similar to the ones received by the Line Trace function:

  1. The current World, which we will supply with the GetWorld function
  2. The Start and End points of the line, which will be the same as the LineTraceSingleByChannel function...
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