Need Help With Code



I need help. Or at least a mini tutorial on how to do those... roller coaster thing... this.

Anyone know how to do this? Please tell me!
People I think can help:


This uses some values and some random factor creating the up and down coaster.


Yeah... I know that.... Do you know anything else?


I mean that is all that is really in it but I think my explanation was confusing so here is the picture of my version of le code: (and yes this is simple and yes I did peek at the original code a bit)


WOAH. It's beautiful. I was just expirimenting and then....


That's a pretty cool-looking tunnel!


Wow that looks amazing!!


Thanks! I think its really cool, too!