Imports github.com/ByteArena/box2d github.com/faiface/pixel github.com/faiface/pixel/imdraw github.com/faiface/pixel/pixelgl github.com/jemgunay/evolutionary-driving/box github.com/jemgunay/evolutionary-driving/car github.com/jemgunay/evolutionary-driving/genetics Standard library imports errors flag fmt image/color math/rand strconv strings time