Just watch. Click space for the next slide. You can use vector or bitmap! I used bitmap, because when I made this project I had no idea what vector was :D
My idea came from a project I'm working on: The Maze Planet - Episode 1. I thought: This is how I make mazes, but it is easy and fast. Why won't I learn everybody who sees this project? The Maze Planet - Episode 1 is out NOW! https://scratch.mit.edu/projects/178173140/