Static pipe heights?

[eastcoastcoder]

Hi, I've been upgrading this project for a newer React Native version at my fork located here:
https://github.com/ethanx94/FlappyBird-ReactNative

I know a member of this repo said this was an ongoing experiment (...around two years ago). I was wondering if the pipes were implemented true to the original game where their height changes?

I'm looking at reducers/game.js getUpdateDistanceForPipe but can't quite understand it.