Tile coordinates for other maps

[karnina]

Duckietown-AI-Driving-Olympics/duckietown_rl/gym_duckietown/simulator.py

Line 2170 in b05a695

def get_tiles(env_name):

Hi, I notice that in duckietown_rl\gym_duckietown\simulator.py, line 2170, there's a function get_tiles(env_name).
It says these values are taken from 'tile_coordinates.py' and lists coordinates for the specific 4 maps.
So it raised an error when I tried to apply it on other maps without the tile coordinates.

1. Could you please clarify where 'tile_coordinates.py' is and what are these tile coordinates used for?
2. How can I transfer these codes into other maps if I don't know their tile coordinates?