This allows Samus to grab onto a wall during a Shinespark and jump off of it with another Shinespark.
Player controls:
Shinesparks work as normal up until you hit a wall.
When you hit a wall, if you are holding the jump button, you will stop on the wall. From there you have about a second to choose a direction to jump in - Up goes up (letting go of jump also goes up), left or right go horizontal, and aim-up goes diagonal.

It's designed to be patched into other hacks fairly easily and flexibly, using xkas. There's a README file for which files to modify/compile for however you want things to work. I haven't tested every customizable option fully, but everything works with defaults.