the rendering itself was easy. the problem i had was actually the style of the rendering. because you have to use the node/way tags to determine what is what and how to render it(style). not only that but also order of rendering. that in itself is not an issue, but the tag system is. which everything(logic) is built on. hence why i gave up on it. i still have the code, it works, it renders roads and whatnot but it is impossible to write some useful style for it beyond utter basics. the only thing i struggled with for a while was tile edges where renderer would close the paths, making continuous lines broken on every edge. once i figured out to render a but further beyond the edge(which won't be actually rendered on the image) i was fine. it is really not hard to do, couple of hours at most. but again, the tag system makes this useless. it can be done but i realized that life is way too short for this and moved on. also i found there are other project that handle this that you can self-host nowadays so it lost it's financial potential anyway. i just prefer to use my own code.