text: TAXI_ENVIRONMENT_REWARDS = dict(
      step=-1,
      no_fuel=-20,
      bad_pickup=-15,
      bad_dropoff=-15,
      bad_refuel=-10,
      bad_fuel=-50,
      pickup=50,
      standby_engine_off=-1,
      turn_engine_on=-10e6,
      turn_engine_off=-10e6,
      standby_engine_on=-1,
      intermediate_dropoff=50,
      final_dropoff=100,
      hit_wall=-2,
      collision=-35,
      collided=-20,
      unrelated_action=-15,
  )
  
  COLOR_MAP = {
      ' ': [0, 0, 102],  # Black background
      '_': [0, 0, 102],
      '0': [0, 0, 102],  # Black background beyond map walls
      '': [180, 180, 180],  # Grey board walls
      '|': [180, 180, 180],  # Grey board walls
      '+': [180, 180, 180],  # Grey board walls
      '-': [180, 180, 180],  # Grey board walls
      ':': [0, 0, 102],  # black passes board walls
      '@': [180, 180, 180],  # Grey board walls
      'P': [254, 151, 0],  # [254, 151, 0],  # Blue
      'P0': [254, 151, 0],  # [102, 51, 0],
      'P1': [254, 151, 0],  # [153, 76, 0],
      'P2': [254, 151, 0],  # [204, 102, 0],
      'P3': [254, 151, 0],  # [255, 128, 0],
      'P4': [254, 151, 0],  # [255, 153, 51],
      'D': [102, 0, 51],
      'D0': [102, 0, 51],
      'D1': [102, 0, 51],  # [153, 0, 76],
      'D2': [102, 0, 51],  # [204, 0, 102],
      'D3': [102, 0, 51],  # [255, 0, 127],
      'D4': [102, 0, 51],  # [255, 51, 153],
      'F': [250, 204, 255],  # Pink
      'G': [159, 67, 255],  # Purple
      'X': [0, 0, 102],
  
      # Colours for agents. R value is a unique identifier
      '1': [255, 255, 000],  # Yellow
      '2': [255, 000, 000],  # Red
      '3': [204, 204, 204],  # White
      '4': [51, 255, 000],  # Green
      '5': [100, 255, 255],  # Cyan
  }
  
  ALL_ACTIONS_NAMES = ['south', 'north', 'east', 'west',
                       'pickup', 'dropoff', 'refuel', 'turn_engine_on', 'turn_engine_off',
                       'standby',
                       'refuel']
  
  """,
                      'turn_engine_on', 'turn_engine_off',
                      'standby',
                      'refuel']"""
  
  BASE_AVAILABLE_ACTIONS = ['south', 'north', 'east', 'west',
                            'pickup', 'dropoff', 'refuel']
  