I was just fooling around, and I decided to do this because I am a noob and I need to learn how to code instead of just playing Robot Destructor By Kikoko. Look inside to see the jump code and how to use the My Block thingy. I will tell you how to use it in the notes.
WATERMELON-POTATOES for the Jump Script So, how it works is, you have the piece of code. You want to make that code actually DO something. You basically have to code the code-block. So, the giant block that says "Define Jump" in the script, means that below it, I have to put in the code for what the sprite will do when jump is in the script. I dunno how to explain it, but I was in my computer science class, on code.org, because he wanted us to do that, and it explained functions, and I was like, wow, that is practically the make a block blocks from scratch that I thought were completely useless. Now they are not useless to me though.