Your question is oddly worded, what do you mean "scroll through sloping floor"?
If you mean how do you get a player to slide down a sloped floor, you could use physics on the player then change the parameters of his mass and other things you may need, so when they land on a slanted platform they will start to slide. Or I would imagine you could check the platforms angle by doing something like, platform angle > 45 ---- do something
There many resources around the forum to find what you're looking for if what I explained wasn't what you were after.