Arfoundation-samples: Errors with AR-Foundation samples

[Yuri1976]

Hello,

I have seen this error before but I dont seem to be able to get rid of it.

I have tried several kind of package combinations.

This is what works better:
AR Foundation 2.1.4
AR Subsystems 3
ARCore XR Plugin 3.0.1
ARKit XR Plugin 3.0.1
5 errors

This is the average
AR Foundation 3.0.1
AR Subsystems 3
ARCore XR Plugin 3.0.1
ARKit XR Plugin 3.0.1
13 Errors

Some of the logs:
Failed to load 'C:/Users/Totoro-Ryzen/Documents/UnityProjects/Anansi Demo AR/Assets/arfoundation-samples/ProjectSettings/XRSettings.asset'. File may be corrupted or was serialized with a newer version of Unity.
UnityEditorInternal.InternalEditorUtility:ProjectWindowDrag(HierarchyProperty, Boolean)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
Library\PackageCache\com.unity.xr.[email protected]\Runtime\AR\ARReferencePointManager.cs(24,9): error CS0246: The type or namespace name 'XRReferencePointSubsystem' could not be found (are you missing a using directive or an assembly reference?)
Library\PackageCache\com.unity.xr.[email protected]\Runtime\AR\ARReferencePointManager.cs(25,9): error CS0246: The type or namespace name 'XRReferencePointSubsystemDescriptor' could not be found (are you missing a using directive or an assembly reference?)
Library\PackageCache\com.unity.xr.[email protected]\Runtime\AR\ARReferencePointManager.cs(26,9): error CS0246: The type or namespace name 'XRReferencePoint' could not be found (are you missing a using directive or an assembly reference?)

ETC.ETC.

Am I missing a library or something?

Thanks in advance for your help

[DavidMohrhardt]

Please include what version of Unity you are using and what the errors are in the first package configuration.

For the logs, ARSubsystems 3+ renamed the concept of a ReferencePoint to an Anchor to be more inline with the provider APIs which is in the changelogs below. 2.1 does not have this change and therefore requires a different version of ARSubsystems to work with ARFoundation 2.1. You can see the dependencies in the package manager UI for each relevant package.

https://docs.unity3d.com/Packages/[email protected]/changelog/CHANGELOG.html
https://docs.unity3d.com/Packages/[email protected]/changelog/CHANGELOG.html

[Yuri1976]

Hello @DavidMohrhardt ,

This is using 2019.3.0f5 I have been using different versions and tried the configuration marked as 'verified' generate even more errors (19 errors)

[DavidMohrhardt]

Please post the errors if you have them readily available.

[Yuri1976]

Hello @DavidMohrhardt

Here are the errors using this configuration:
Unity 2019.3.0f5
AR Foundation 3.0.1
AR Subsystems 3
ARCore XR Plugin 3.0.1
ARKit XR Plugin 3.0.1

Assets\arfoundation-samples\Assets\Scripts\HumanBodyTracker.cs(20,12): error CS0246: The type or namespace name 'ARHumanBodyManager' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\BoneController.cs(147,31): error CS0246: The type or namespace name 'ARHumanBody' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\TestDepthImage.cs(40,12): error CS0246: The type or namespace name 'AROcclusionManager' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\TestBodyAnchorScale.cs(15,12): error CS0246: The type or namespace name 'ARHumanBodyManager' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\ScreenSpaceJointVisualizer.cs(54,12): error CS0246: The type or namespace name 'ARHumanBodyManager' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\HumanBodyTracker.cs(49,31): error CS0246: The type or namespace name 'ARHumanBodiesChangedEventArgs' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\TestBodyAnchorScale.cs(51,31): error CS0246: The type or namespace name 'ARHumanBodiesChangedEventArgs' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\TestDepthImage.cs(35,5): error CS0246: The type or namespace name 'AROcclusionManager' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\HumanBodyTracker.cs(15,5): error CS0246: The type or namespace name 'ARHumanBodyManager' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\ScreenSpaceJointVisualizer.cs(81,37): error CS0246: The type or namespace name 'XRHumanBodyPose2DJoint' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\TestBodyAnchorScale.cs(10,5): error CS0246: The type or namespace name 'ARHumanBodyManager' could not be found (are you missing a using directive or an assembly reference?)
Assets\arfoundation-samples\Assets\Scripts\ScreenSpaceJointVisualizer.cs(49,5): error CS0246: The type or namespace name 'ARHumanBodyManager' could not be found (are you missing a using directive or an assembly reference?)

It looks like I am missing some library...this is the average namespace in the cs files :
using System;
using System.Text;
using System.Collections.Generic;
using Unity.Collections;
using UnityEngine;
using UnityEngine.XR.ARFoundation;
using UnityEngine.XR.ARSubsystems;

Also, I have tried branch 2.1 and it works after you have updated the project settings provided into the project

[DavidMohrhardt]

Okay so the issue with with 3.0.1 is that the samples contain reference to the HumanBodySubsystem for ARKit. The feature was in our preview package but we felt that it wasn't production ready so we decided to remove it from the verified package. You can update to the following packages to fix the errors.

ARFoundation: 3.1.0-preview.3
ARSubsystems 3.1.0-preview.2
ARKit: 3.1.0-preview.2

Similarly you can remove the relevant scripts and scenes from your project should you not need Occlusion and HumanBody feature sets. ARCore and ARKit Face Tracking should be unaffected by this issue but you may update them if you would like.

[Yuri1976]

Hello @DavidMohrhardt ,

Thank you very much for your help. The update solved all the problems and now it works like a charm.
I knew I could have just deleted the specific examples, but I was more interesting in understanding what was wrong.

Once again, thanks for your help.

Cheers
Yuri

[setiahadi83]

Hello @DavidMohrhardt
I have tried several kind of package combinations.

This is what works better:
AR Foundation 3.0.1
AR Subsystems 3.0.0
ARCore XR Plugin 3.0.1
ARKit XR Plugin 3.0.1
26 error

Library\PackageCache\com.unity.xr.[email protected]\Runtime\WindowsMRLoader.cs(101,16): error CS0246: The type or namespace name 'XRReferencePointSubsystem' could not be found (are you missing a using directive or an assembly reference?)
Library\PackageCache\com.unity.xr.[email protected]\Runtimemd5-e6ba733efcf025cc04c19aacbf640306\WindowsMRReferencePointSubsystem.cs(18,60): error CS0246: The type or namespace name 'XRReferencePointSubsystem' could not be found (are you missing a using directive or an assembly reference?)
Are there any solution for this?
thank you before

[setiahadi83]

i cant build into my android

[JERINPWILSON]

Hey i am using unity 2019.3
AR Foundation 2.1.8
I can't seem to be able to update it to the above mentioned preview package.
Could you please guide me how to update to the latest preview package. I looked in package manager->show preview packages. But I don't see it.
Thanks.

[DavidMohrhardt]

@JERINPWILSON drop down the AR Foundation in the package manager see all versions.

[JERINPWILSON]

@DavidMohrhardt sir I'm working on an AR project. I had no background in unity or augmented reality. So can i have your help.. I have done pretty something with it. It's a head mounted project but on smartphone.

[mavc18]

The type or namespace name 'ARExtensions' does not exist in the namespace 'UnityEngine.XR'

[tdmowrer]

The type or namespace name 'ARExtensions' does not exist in the namespace 'UnityEngine.XR'

ARExtensions is a separate package that was necessary in very early versions of ARFoundation. It never came out of preview and was discontinued some time ago. @mavc18 what project or sample are you trying to open?

[shobhit-umrao]

Hello @DavidMohrhardt ,
I frequenlty get errors and warnings which now I think that they occur due to version compatibility issues, the errors and warnings get away when the versions are correct to each other.Could you please tell us if there is any website or forum where I could get the information that which version of say AR Foundation, ARCore, ARKit etc, is used by this version of unity, and so that I may install the right plugin for that version.

[tdmowrer]

@shobhit-umrao I suggest you use verified packages. Verified packages are the set of packages that have been verified to work together _for a specific Unity version_. So, for example, 2.1 is verified for Unity 2019.3. It also works with 2020.1, but it isn't verified there, and so may not be compatible with other 2020.1 verified packages.

[YohanBaillot]

Hello. I am having the same exact error as Yuri1976 shown also hereunder and I am on Macbook Pro 16 Catalina 10.15.4 beta and Unity 2020.2.a13. I originally used 3.13 for Kit/Core/Subsystems/Foundation but I got those errors. As you can see on the attached image there is no version 3.1.0 which you recommend to install for any of those modules. I am trying to access the new capabilities which body tracking is part of. Is that not available for the Mac?

[Somshekars]

Resolved..
"com.unity.xr.arcore": "3.1.0-preview.8",
"com.unity.xr.arfoundation": "3.1.0-preview.8",
"com.unity.xr.arkit": "3.1.0-preview.8",

[tdmowrer]

3.1 is 2020.2 compatible, but the AROcclusionManager is not available in the 3.1 verified packages as it relies on experimental APIs, so the project that you have loaded cannot use it.

4.0 is verified for 2020.2 and includes the AROcclusionManager.

[YohanBaillot]

Hello Tim and Unity ARfoundation support. I am not sure where those packages you are mentioning are. 3.1.0 and 4.0 are just not there on Mac Package manager as you can see in the picture hereunder using Unity 2020, and you need to be on Mac to compile the ARkit only capability of being able to do face and world tracking simultaneously obviously

Can Unity please pay attention to this that has been going for more than 6 months on this thread and clarify once for all what should be used for the example WorldCameraWithUserFacingFaceTracking instead of just basically saying it should work? As you can see in the pictures the packages 4.0 and 3.1.0 do not exist!!!, and choosing all the latest packages OR making sure they are verified still shows 200+ errors. How do we go from there? If you are convinced that 3.1.0 and 4.0 should be there please let us know how to get them. Thank you

[tdmowrer]

As you can see in the pictures the packages 4.0 and 3.1.0 do not exist!!!

Are we looking at the same picture? :) I see a 4.0.* version of each package in your screenshots, and it shows 3.1.3 as the verified.

Were you perhaps looking for the _exact_ strings "4.0" and "3.1.0"? The last number in the version string is the patch version (i.e., bug fix). Patch versions don't change the API in any way, so that's why I've previously referred to versions 4.0 and 3.1 (I have not mentioned "3.1.0" specifically).

As to your compilation errors -- your screenshot does not provide enough information, but my guess is you cloned an earlier version of this samples repo and then tried to upgrade to a later package version without updating the samples. Changes to the major version number indicate breaking API changes, so the sample code for, say, 2.1 would not be compatible with 3.x or 4.x versions.

This repo has branches for each verified package version, and the latest-preview branch (the default) uses the latest preview packages.

[YohanBaillot]

Thanks for addressing this Tim, lots was left to the imagination and yes I was looking for the exact package number. Ill make sure to upgrade the samples and get the branch you mentioned. Thanks

[gogo-dread]

I can't find the custom Nunit 1.0.0 package anywhere also it keeps throwing this error:
Failed copying file C:/Users/admin/Downloads/arfoundation-samples-latest-preview11/arfoundation-samples-latest-preview/Assets/Scripts to Assets/Scripts.
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)
Please help.

[tdmowrer]

I can't find the custom Nunit 1.0.0 package anywhere also it keeps throwing this error:
Failed copying file C:/Users/admin/Downloads/arfoundation-samples-latest-preview11/arfoundation-samples-latest-preview/Assets/Scripts to Assets/Scripts.
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)
Please help.

This is a closed issue, and what you've described does not sound related. Please open a new issue.