The document provides a comprehensive overview of setting up ARCore for Android development using Unity, detailing device requirements, fundamental concepts, and step-by-step instructions for creating a scene with motion tracking and environmental understanding. It includes guidance for handling touch input, creating interactive elements like a snake game, and building and running the project on compatible devices. Additionally, it offers links to further learning resources and upcoming workshops related to AR development.

1. Google ARCore Code Lab

2. Dan Miller
XR Evangelist
Unity Technologies
danielmi@unity3d.com
@DanMillerDev

3. Overview
• ARCore Overview
• Android Development Overview
• Preparing your device to be ARCore Ready
• Workshop

4. ARCore

5. Mac: SDK
/Users/Dan/Library/Android/sdk
Mac: JDK
/Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home

6. ARCore
• Google Mobile AR
• Supported devices: Pixel, Pixel XL, Pixel 2, Pixel 2 XL, Samsung S8, S8+, Note8, S7,
and more! https://developers.google.com/ar/discover/supported-devices
Fundamental Concepts
Motion Tracking
Device IMU
6 DOF device
Environmental Understanding
Plane finding
Feature Points
Light Estimation
Average ambient light

7. Unity Android Development
• Android Module
• Android SDK, Android JDK, Android NDK
(if using IL2CPP)
• ADB Developer tool for debugging

8. Getting Started

9. https://goo.gl/KT8qZj

10. Create a new Unity Project
• Switch platform to Android
• Open player settings Edit -> Project Settings -> Player
• Disable Multithreaded rendering (Other / Rendering)
• Set package name to com.XXXXXXX.arcorelab
• Set minimum API level to 7.0 (Nougat
• Enable ARCore ( XR Settings )

11. Create your Scene
1. Add the ARCore 1.x SDK package
2. Add the codelab package
3. DELETE everything in your scene
4. Add ARCore Device Prefab to the scene
5. Add Environment Light prefab to the scene
6. Add Event System to the Scene (Create -> UI -> Eventsystem
7. Save the scene

12. Scene Controller
1. Create an empty GameObject, name it SceneController, Create a script, name it SceneController
2. Use the ARCore Namespace
3. Add the function QuitOnConnectionErrors()

13. Scene Controller
1. Start() and Update() functions

14. Build and Run
1. Save your scene
2. Add it to the build settings
2. Build and Run to your device

15. Global Scale and Tracked Planes
1. Add GlobalScalable.cs to Scene Controller GameObject
- Configure it to Handle Scale Input, NOT adjust scale
2. Create a 3D Plane Object, name it TrackedPlaneDisplay
4. Set TrackedPlaneDisplay’s material to use PlaneGrid
5. Add the script PlaneRender to TrackedPlaneDisplay
6. Add the script TrackedPlaneController to the TrackedPlaneDisplay

16. Tracked Plane Controller
1. Set plane renderer in Awake()
2. Create public function SetTrackedPlane()

17. Save Tracked Plane Display as Prefab
1. Drag TrackedPlaneDisplay into the project hierarchy
2. Delete it from the scene
3. Add public GameObject reference to the tracked plane in the Scene Controller
4. Save Script, set new Prefab TrackedPlaneDisplay in Scene Controller

18. Update Scene Controller
1. Create new Function ProcessNewPlanes()
2. Call ProcessNewPlanes() in Update function of Scene Controller

19. Build and Run
1. Save your scene
2. Build and Run to your device

20. Handling Touch Input
1. Add a public Camera firstPersonCamera variable to Scene Controller
2. Create new Function ProcessTouches() 3. Add
ProcessTouches To Update()
4. Set First Person Camera in scene to
. firstpersonCamera field
3

21. Add Set Selected Plane
1. Add function SetSelectedPlane() empty or with a debug statement for now

22. Snakes on a Plane
1. Create an Empty GameObject name it Snake
1. Add existing C# class Slithering.cs to Snake object
2. Add existing C# class SnakeController.cs to snake object
3. Add variables to SnakeController
4. add function SetPlane()

23. Snakes on a Plane
1. Add gazePointer to the scene
2. Add vars to snake controller
3. Assign gazePointer to SnakeController
4. Add head prefab and first person camera to the SnakeController in the scene
5. Add body prefab reference to the slithering
6. Uncomment Update(), SpawnSnake() and GetLength()

24. Update Scene Controller
1. Create public variable snakeController
2. Call SetPlane() on the snake controller in SetSelectedPlane()

25. Feed the snake
1. Add FoodController.cs to Scene Controller object
2. Add variables
3. Populate foodModels with Foods
4. Add the “food” tag to the tag manager
5. Uncomment Code in FoodController

26. Update SceneController
1. Add SetSelectedPlane call in SetSelectedPlane in Scene controller
2. Create C# script FoodConsumer
3. Add FoodConsumer through code in the SpawnSnake() method of Snake Controller

27. Update Food Consume
1. Add Collision Code to Food Consume

28. https://codelabs.developers.google.com/codelabs/arcore-intro/index.html#0
Google “Codelab ARCore”

29. https://goo.gl/forms/WBnNRBEnvLdswiBg1
https://bit.ly/2yqfxng
Survey

30. 38
Learn more at these Google AR / VR
sessions:
ARCore 101: A hands on Workshop
June 20th, 2pm - White Room
Developing Immersive Experiences with ARCore
June 21st, 1:15pm - Breakout 5
Six Degrees of Freedom: Develop for Daydream
Standalone Headsets
June 21st, 2:30pm - Breakout 4

31. Thank you!