As my first ever Snap! project, I decided to make a basic platforming engine for anyone to use and build off of, being able to make their own platformer with the hard part taken care of xD maybe this isnt needed but I'd say it can be useful for beginners who want a bit of a headstart without much hassle.
It has comments in each sprite, giving a gist of the code that I wrote(tho the gravity engine is literally copied from the scratch wiki, I did do some minor modifications).
There's also a basic cord save system that registers coordinates 
Here's the project link, I hope this can help someone out 