AR Scavenger Hunt - Issue with transparent PNGs?

Submitted by titchard on Fri, 06/13/2025 - 12:47
Forums: 
Bugs in content types

Good Morning Folks

I have tried to find this in the github and online but seems to not be mentioned - we had some issues at our institution with AR Scavenger Hunt not recognising tags, and we realised that it was down to the user trying to use transparent PNGs.  The moment i added a white background to them they worked perfectly.

This seems like a issue that is not mentioned in the documentation (that i can find anyway, so happy to be corrected) but got a few users stumped until I was comparing a working and non-working plugin and realised the issue.

I have updated our internal H5P guidance, I am not sure if this needs to be updated in the documentation, as on the surface the tags it creates look identical to a standard white background image to our eyes, but must have different anchor data to recognise it in the code.

Not so much a bug, but a quirk that stumped me for a week!

otacke's picture

otacke

Sat, 06/14/2025 - 13:10

Hi titchard!

Thanks for reporting. I have fixed the issue and released version 1.6.1 of AR Scavenger. You can install it by downloading the demo content from https://www.olivertacke.de/labs/2020/08/02/arrrrrr-ar/ and uploading that to your platform.

Please note that you will currently not be able to get the update via the H5P content type Hub. H5P Group is still serving version 1.4.1 on the H5P content type Hub and I have no control over releases there whatsoever. I asked H5P Group to update to version 1.6.0 (the latest version before the current fix) over half a year ago, but nothing has happened yet. I now updated the ticket to say 1.6.1 (the latest version with the fix). Can't tell when they'll eventually get around to handle the ticket (see "p. s." there). One of the annoying issues that hopefully will get resolved soon with a dedicated community manager now handling things ...

Best,
Oliver