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

92cff545-c97e-469c-9dac-349ea87b105b:b6555c21d998

Overview

Specific requirements

Hint set 1

Hint set 2

Hint set 3

More things to try

Next steps

Comp-L3-Prog.VRp: Intermediate VR Development

Intermediate VR Development

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

D.4.2.6_pushable-buttons_edited.mp4

You’re ready to dig into the first of the three features from the project brief: the number pad. Although this interaction is the simplest of the three, this is the first time you’ll be asked to program a custom VR interaction without any instructions. 

In this tutorial, you will program a custom VR number pad according to the requirements of the project brief, with the help of optional hints.

Games

Film

Automotive

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.

The Number Pad

Project 2: Escape Room Project brief 

The first feature you’ll implement from the project brief is the number pad. The user must be able to enter a code on the number pad. If the code is correct, a keycard should spawn. If the code is incorrect, the number pad display should reset so that the user can try again.

The specific requirements for the number pad are listed in the next step. 

As a reminder, if you aren’t sure how to implement one of these requirements, three sets of hints are available to you. We recommend that you attempt to get it working before moving on to the next set of hints. 

If you go through all three sets of hints and are still stuck, at the very end of this project you will be able to download and inspect the completed scripts. Even if you can’t get it working, you will still learn a lot by attempting it and then reviewing someone else’s functional code. 

A Large Keypad, a floating Keycard, an interface screen, and a slip of paper which says “Code 1442”.

The must-have requirements for the number pad are outlined in the full project brief and listed here for your convenience. 

The touch button must include the following:

There should be a script named TouchButton.cs that extends XRBaseInteractable.

You must use OnHoverEntered to detect a button press.

The color of the button should change when you touch it.

The number pad must include the following:

There should be a script named NumberPad.cs.

The code should be displayed as the buttons are pressed.

If the sequence is correct, a keycard should be spawned at the location of the dispenser.

If the sequence is incorrect, the number pad should be reset to its original state, allowing the user to enter another code.

Below is the first set of hints, which includes direction on high-level code architecture and programming logic. Use these hints only after you’ve at least attempted the feature with the guidance above. 

Give each button a buttonNumber variable corresponding to the number of the button.

When the button is hovered over, call a function from the keypad script, passing along that buttonNumber.

Store the correct sequence as a variable.

Store the characters the user has entered as a variable.

Track the number of button presses the user has done.

When they have entered the total number of characters required for the code, compare the code they entered with the correct code.

If the code is correct, spawn the keycard on the table.

If the code is incorrect, reset the keypad.

Below is the second set of hints, which will point you to specific methods, classes, and documentation that may be helpful for this feature. Use these hints only after you’ve at least attempted the feature with the guidance above. 

To detect a button press, override OnHoverEntered. 

To change the color of a button, you need a reference to its Renderer component.

Create new TouchedMaterial and Normal Material variables, then set the material to TouchedMaterial in OnHoverEntered and set it back to NormalMaterial in OnHoverExited.

Use a string or an array to hold the sequence as a variable.

Make a currentIndex variable to keep track of how many characters the user has entered.

Every time a button is pressed, increment the currentIndex value.

When the index number matches the total length of the array, check if the total sequence is correct. 

Below is the third set of hints, which includes actual snippets of code that you could use for specific features. Use these hints only after you’ve at least attempted the functionality with the guidance above. 

protected override void OnHoverEntered(HoverEnterEventArgs args)
{
  base.OnHoverEntered(args);
  m_RendererToChange.material = TouchedMaterial;
  LinkedKeypad.ButtonPressed(ButtonNumber);
}

public string Sequence;
public KeycardSpawner CardSpawner;
public TextMeshProUGUI InputDisplayText;    
private string m_CurrentEnteredCode = "";

public void ButtonPressed(int valuePressed)
{
  m_CurrentEnteredCode += valuePressed;

  if (m_CurrentEnteredCode.Length == Sequence.Length)
  {
    if (m_CurrentEnteredCode == Sequence)
    {
      // code correct
    }
    else
    {
      // code incorrect
 
    }
  }
}


If you want to further develop your skills, explore new concepts, or improve your project, check out some optional activities below. Each one is tagged as either [Easy], [Medium], or [Difficult] so you can choose the level of challenge. 

These activities are entirely optional, so if you’re not interested, no problem – just skip this step. 

We do recommend attempting at least one of them in order to get the most out of this learning experience. Good luck!

[Easy] Add feedback for correct and incorrect entries

In addition to the card appearing or not, it could be more obvious to the user when the code is correct or incorrect. Add some kind of visual and/or auditory feedback to improve this user experience.

[Medium] Prevent pressing a single button with multiple hands 

When you have one hand on a button and put a second hand on it, the button should not register a second button push.

The touch buttons work well, but it might be a more satisfying interaction if the buttons could physically be pressed down. Creating kinetic controls is complex; you could try to implement it yourself or look at the code provided in the example scene from the previous project. 

In the next tutorial, you will add the functionality for the keycard reader, allowing the user to swipe the card to unlock the door. 

If you could not successfully meet the requirements or if you’re just curious to see another way to implement the code, you will be able to download the completed scripts and compare your work at the end of this project. 

Number pad

Overview Video

1. Overview

2. Specific requirements

3. Hint set 1

4. Hint set 2

5. Hint set 3

6. More things to try

7. Next steps

Complete this tutorial