Press space while hovering over a map position to teleport there. Culling is how far rays will trace before terminating Field of view is how wide (in degrees) the field of view is. Scanlines is the number of rays traced, and displayed onscreen Step size is the length the ray travels each iteration before testing for collision
Note: I plan to redo the drawing math, to allow for more customization and more accurate perspective. I only made this on a whim, I'm not going to be using Scratch for a long time.