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Unreal Engine 4 Virtual Reality Projects

You're reading from   Unreal Engine 4 Virtual Reality Projects Build immersive, real-world VR applications using UE4, C++, and Unreal Blueprints

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Product type Paperback
Published in Apr 2019
Publisher Packt
ISBN-13 9781789132878
Length 632 pages
Edition 1st Edition
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Authors (2):
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Robert Ruud Robert Ruud
Author Profile Icon Robert Ruud
Robert Ruud
Kevin Mack Kevin Mack
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Kevin Mack
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Table of Contents (20) Chapters Close

Title Page
About Packt
Contributors
Preface
1. Thinking in VR FREE CHAPTER 2. Setting Up Your Development Environment 3. Hello World - Your First VR Project 4. Getting Around the Virtual World 5. Interacting with the Virtual World - Part I 6. Interacting with the Virtual World - Part II 7. Creating User Interfaces in VR 8. Building the World and Optimizing for VR 9. Displaying Media in VR 10. Creating a Multiplayer Experience in VR 11. Taking VR Further - Extending Unreal Engine 12. Where to Go from Here 1. Useful Mind Hacks 2. Research and Further Reading 3. Other Books You May Enjoy Index

Setting up VRHand to pick up objects


Now, we're ready to get our hands grabbing these objects.

Creating a function to find the nearest pickup object

The next thing we need to do is find out what objects are near enough to our hand to be picked up. Let's create a function to do this:

  1. In BP_VRHand, create a new function called FindNearestPickupObject.
  2. Set its Category to Grabbing and its Access Specifier to Private.
  3. In its implementation graph, right-click to create a Get All Actors with Interface node, and set its Interface value to BPI_PickupActor.

This is going to give us an array of every actor in the scene that implements the BPI_PickupActor interface.

  1. Drag a connector from the Out Actors output and create a For Each Loop node:

We're going to iterate through the actors that could possibly be picked up, ignore any actor that's too far to be considered, and then return the closest remaining eligible actor.

  1. From the For Each Loop Array Element output, drag out a connector and call Get Actor Location...
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