Not quite what you are looking for, but if you like long-form programming videos, javidx9 constructs a similar game engine in an hour or so in "Top Down City Ba

Not quite what you are looking for, but if you like long-form programming videos, javidx9 constructs a similar game engine in an hour or so in "Top Down City Based Car Crime Game": https://www.youtube.com/watch?v=mD6b_hP17WI https://www.youtube.com/watch?v=mD6b_hP17WI