I am working on a mini-project for implementing a pathfinder based off weighted roads with pollution data. The work done on GraphHopper is immense, impressive and a little overwhelming. However it is the best resource along with documentation that I have found that explains this problem well.
I would like to take implementations or even build upon GraphHopper.
Would the knowledgeable experts here have any advice on how to navigate through the files and what to take a look at in order to get things rolling. Ideally there'd be a downsized version for me to dissect, however I haven't been able to come across this.