"A game of snake" example seems to be broken

[demicuz]

Issue:

Some cells throw Can't position non-shape error.

Environment:

• Browser: Firefox 85.0.2, Chrome 88.0.4324.150
• Platform: Windows 10

URL to a gist replicating the issue

https://user.maria.cloud/gist/bba60540e714b31dcac02eb7cdf02fbc?eval=true

[avidrucker]

Here's a slightly modified version that works probably close to as intended: https://maria.cloud/gist/33d3a88ae35d8b5698c84d1672dd13a9 It's a little souped up, with collision and fruit logic 🐍🍎

As far as this issue goes, I suppose this is more of a curriculum matter, especially if any of the current curricula reference plexus's "A game of snake". @demicuz Shall we call this issue closed for now?

[avidrucker]

This also appears to be a duplicate issue to https://github.com/mhuebert/maria/issues/201

[daveliepmann]

@avidrucker feel free to make a PR replacing the existing link in editor2/src/main/maria/learn/example_gallery.cljs and curriculum/Example Gallery.cljs with your remix :)