What is in this mission?

Explore the sample scene

Set up the scanner

Code the scanning functionality

Balloon Inflator

Escape Room project overview

Number pad

Keycard reader

Sliding Door

Mission 4 Quiz - Custom VR Development

Project 3: Clone with a twist! 

Submit your final project

Clone with a twist!

Learn to write scripts for advanced interactions in VR applications, and create your own unique VR project.

In the previous missions, you used pre-made interaction scripts provided to you as part of the Create with VR project. This mission will teach you to write scripts specifically for VR applications. You’ll write these scripts from scratch in the context of three separate projects.

In project 1, the XRI example scene created by the XR Interaction Toolkit team, you'll reference existing code and documentation to program some more advanced, customized interactables.

In project 2, you’ll follow guidelines from a project brief to create part of a VR escape room. Rather than following step-by-step instructions here, you’ll only receive hints.

In project 3, which you’ll submit to receive your pathway badge, you’ll create your own unique VR project. The challenge here is to create a clone with a twist: a version of an established VR experience, but with a unique alteration.

, you should already have a good foundational knowledge of scripting in the Unity engine to make the most out of this learning content.

If you don’t already have a foundational understanding of scripting, now is an excellent time to learn. We recommend you complete the 

If you feel almost ready but want to brush up on a few skills without doing the entire Junior Programmer pathway, why not check out the 

Custom VR Development

Unity VR Development

Dive into the world of virtual reality with Unity's VR Development Pathway. Learn to design immersive experiences, build VR games, and master Unity's VR tools. Start creating in VR today!

VR Development Pathway - Learn Unity VR Game Development | Unity Learn

 or have the equivalent experience, before starting Unity VR Development.

In addition, basic coding experience is recommended before starting the Custom VR Development mission, which can be obtained via the 

Ready to develop for VR? This guided learning Pathway will prepare you for a job in the VR industry!

Welcome to VR Development! This learning pathway is designed for anyone interested in learning to create experiences for VR. This pathway assumes a basic knowledge of Unity and basic knowledge of programming.

VR Development

Welcome to the VR Pathway

VR Software Setup 

1.1 - VR Project Setup

1.2 - VR Locomotion

1.3 - Grabbable Objects

1.4 - Sockets

Challenge 1 - Architecture Review

The VR software landscape

Lab 1 - VR Personal Project Basics

Submission 1 - Share your Work

Mission 1 Quiz 1 - VR Basics

Learn the basics of setting up a VR project and implementing simple interactivity like locomotion and grabbing objects.

In this mission, you will learn the basics of setting up a VR project and implementing simple interactivity.

In these tutorials, you will do the following:

Set up a VR-ready project with the room of your choice

Implement locomotion so that users can move around the scene

Add grabbable objects users can pick up and throw around

Set up sockets that objects can snap into

In the Challenge for this mission, you will apply your skills in an architectural review prototype. Then, in the Lab, you'll fill out a design document to lay out a concept for your own project, and then begin working on it. Finally, in the Quiz, you will test your new knowledge.

VR Basics

2.1 - Audio and Haptics

2.2 - Activation Events

2.3 - Direct and Ray Interactors

2.4 - User Interface

Challenge 2 - 3D Painting

The XR hardware landscape

Lab 2 - Personal Project Events & Interactions

Submission 2 - Share your Work

Mission 2 Quiz - VR Events & Interactions

Learn how to implement more complex interactions in VR to make the experience more immersive, such as audio, haptics, and user interfaces.

In this mission, you will implement more complex interactions in VR to make the experience more immersive.

Apply new functionality to specific objects

Allow the user to toggle between multiple types of interactors

In the Challenge for this mission, you will apply your skills in a 3D painting prototype. Then, in the Lab, you'll implement the core functionality of your personal project. Finally, in the Quiz, you will test your new knowledge.

Events and Interactions

3.1 - Comfort and Accessibility

3.2 - Optimization

3.3 - Lighting

3.4 - Building and Sharing

Challenge 3 - Training Simulation

Keeping up with XR technology

Lab 3 - Personal Project Ergonomics & Optimization

Submission 3 - Share your Work

Mission 3 Quiz - VR Ergonomics & Optimization

Explore ergonomics and optimization for VR for making apps as accessible and comfortable as possible.

In this mission, you will focus on ergonomics and optimization for VR in order to make your app as accessible and comfortable as possible.In these tutorials, you will do the following:

In the Challenge for this mission, you will apply your skills in an industrial training simulation prototype. Then, in the Lab, you'll implement the core functionality of your personal project. Finally, in the Quiz, you will test your new knowledge.

Ergonomics and Optimization

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Comp-L3-Prog.VRp: Intermediate VR Development

Intermediate VR Development

aaron.sharp@unity3d.com bCXcG*RnEp9O!6@q

In this quiz, you will test the knowledge and skills you learned in Mission 4 related to Custom VR Development.

This quiz is part of the VR Development Pathway. 

Skill-L3-Prog.VRp-3: Program custom VR interactions in order to meet the requirements of a project brief.

o-L3-Prog.VRp-3.1: Demonstrate familiarity with the XR Interaction Toolkit (XRIT) API by identifying a high-level approach for programming a given feature in VR.

o-L3-Prog.VRp-3.2: Extend the functionality of the default interactable and interactor objects by overriding the provided events in the XRIT.

o-L3-Prog.VRp-3.3: Perform mathematical calculations on 3D vectors in order to program custom 3D interactions in VR.

Program custom VR interactions in order to meet the requirements of a project brief.

Project 2: Escape Room Project brief 

Program custom VR interactions in order to meet the requirements in a project brief.

Read the documentation below about the XRGrabInteractable class.

If you added a new script called MyGrabbableObject using the code below, you would be able to grab it in VR.

public class MyGrabbableObject : XRBaseInteractable 
{
}

Read the documentation below about the XRGrabInteractable class.   True or False: If you added a new script called MyGrabbableObject using the code below, you would be able to grab it in VR.  public class MyGrabbableObject : XRBaseInteractable 
{
}  

You can see from the documentation that XRGrabInteractable is a child class of XRBaseInteractable. The grabbable functionality is implemented in XRGrabInteractable. Therefore, if you extended XRBaseInteractable, you would not be able to grab it. You would need to extend XRGrabInteractable to inherit its grabbable functionality.

Read the documentation below about the GetAttachTransform method in the XRBaseInteractable class.

Let’s say you wanted to override this method in a child class and print a message to the console. 

Which of the following code examples would do that with no errors?

Read the documentation below about the GetAttachTransform method in the XRBaseInteractable class.   Let’s say you wanted to override this method in a child class and print a message to the console.  Which of the following code examples would do that with no errors?  Select one answer.  

public override Transform GetAttachTransform(IXRInteractor interactor)
{
 Debug.Log("Attach point on: " + transform.gameObject.name);
}

private Transform GetAttachTransform(IXRInteractor interactor)
{
   Debug.Log("Attach point on: " + transform.gameObject.name);
   return transform;
}

protected override Transform GetAttachTransform()
{
  Debug.Log("Attach point on: " + transform.gameObject.name);
  return transform;
}

public override Transform GetAttachTransform(IXRInteractor interactor)
{
Debug.Log("Attach point on: " + transform.gameObject.name);
return transform;
}

To override a method, you must include the “override” keyword. 

The method signature includes an “interactor” parameter - this cannot be removed. 

The method has a return type of Transform - so the body must include a return statement that returns a Transform.

The code below shows an example of overriding a base class method. 

protected override void OnSelectEntered(SelectEnterEventArgs args)
{
      // call base method
}

Which line of code would successfully call the base method? 

The code below shows an example of overriding a base class method.   protected override void OnSelectEntered(SelectEnterEventArgs args)
{
      // call base method
}  Which line of code would successfully call the base method?  Select one answer.  

When calling the base method, you need to pass in the required arguments, which in this case is one named “args”.

If you don’t include this base method call, none of the functionality from the parent class will happen. All functionality will be overridden by whatever is in this override method.

Read the documentation on Vector3.Dot below:

Vector3 firstVector = new Vector3(-1, 0, 1);
Vector3 secondVector = new Vector3(0, 1, 0);
private void Start()
{
   float dotProduct = Vector3.Dot(firstVector, secondVector);
   Debug.Log(dotProduct);
}

What would be printed in the console if the above code was run?

Read the documentation on Vector3.Dot below:   Read through the code below.  Vector3 firstVector = new Vector3(-1, 0, 1);
Vector3 secondVector = new Vector3(0, 1, 0);
private void Start()
{
   float dotProduct = Vector3.Dot(firstVector, secondVector);
   Debug.Log(dotProduct);
}  What would be printed in the console if the above code was run?  

For normalized values, which are values between 0 and 1, the dot product will return 1 for vectors in the same direction, -1 for vectors in opposite directions, and 0 for perpendicular vectors. 

These vectors are perpendicular, not sharing any X, Y, or Z components. Therefore, the dot product would be 0.

What is the best description of what is happening in the code below?

RaycastHit hit;
if (Physics.Raycast(transform.position, Vector3.up, out hit))
{
  Debug.Log(hit.transform.gameObject);            
}

What is the best description of what is happening in the code below?  RaycastHit hit;
if (Physics.Raycast(transform.position, Vector3.up, out hit))
{
  Debug.Log(hit.transform.gameObject);            
}  Select one answer.  

If the object directly above this object is casting a ray, print the name of that object.

If there is an object directly above the current object with a collider on it, print the name of that object. 

If the current object is facing upwards, print the name of that object.

If the object directly above this object is colliding with the current object, print the name of that object.

Physics.Raycast will return true if the ray defined by the position and direction hit something with a collider. The “hit” variable provides information about the object that was hit by the ray. This code has nothing to do with the orientation of the objects.

Scripting

ElizabethMidgley

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Mission 4 Quiz - Custom VR Development

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