Our 2D game character grew 3% taller every time he walked (hey.paris)

This is not normal. Artists can and do work in a fixed size sprite sheet for so many reasons.

Disappointed that this is not about https://www.youtube.com/watch?v=P8bQ2yxyotw

Reads like something that came out of an LLM.

I honestly don't get why someone would write a blog post for such a simple problem. It's fizzbuzz level. I thought the author might be an artist who knows very little about programming and is just learning, but according the about page they have PhD and has published 20 programming books...?

Wouldn’t it make sense to calculate the character box when bundling the assets rather than at runtime?

There's a lot of LLM fluff here, I'd love to see just the prompt

The origin / root node should be authored as part of the asset. Just putting it in the center of a bounding box doesn't work well in every scenario.

Reading the blog I thought I was probably missing something. Reading the comments I learn that I missed nothing. Weird blog post.

The whole thing should’ve been an email

"Hey, artist, could you add a layer with straight line in you file and fit animation so character actually walks on it?"

...but I imagine the artist was also AI here...