Find the missing lambda cache locations in Half Life 2.

hl2_lambda.py

"""Find the missing lambda cache locations in Half Life 2."""

import os

# Change this line if you have games installed elsewhere
STEAMAPPS = 'C:/Program Files (x86)/Steam/steamapps/common/'

GAMESTATE = os.path.join(STEAMAPPS, 'Half-Life 2/hl2/gamestate.txt')

# Locations from https://steamcommunity.com/sharedfiles/filedetails/?id=145616679
LOCATIONS = [
    'A Red Letter Day 1',
    'Route Kanal 1',
    'Route Kanal 2',
    'Route Kanal 3',
    'Route Kanal 4',
    'Route Kanal 5',
    'Route Kanal 6',
    'Route Kanal 7',
    'Water Hazard 1',
    'Water Hazard 2',
    'Water Hazard 3',
    'Water Hazard 4',
    'Water Hazard 5',
    'Water Hazard 6',
    'Water Hazard 7',
    'Water Hazard 8',
    'Water Hazard 9',
    'Water Hazard 10',
    'Black Mesa East 1',
    "We Don't Go To Ravenholm... 1",
    "We Don't Go To Ravenholm... 2",
    "We Don't Go To Ravenholm... 3",
    "We Don't Go To Ravenholm... 4",
    'Highway 17 1',
    'Highway 17 2',
    'Highway 17 3',
    'Highway 17 4',
    'Highway 17 5',
    'Sandtraps 1',
    'Sandtraps 2',
    'Nova Prospekt 1',
    'Nova Prospekt 2',
    'Nova Prospekt 3',
    'Entanglement 1',
    'Anticitizen One 1',
    'Anticitizen One 2',
    'Anticitizen One 3',
    'Anticitizen One 4',
    'Anticitizen One 5',
    'Anticitizen One 6',
    'Anticitizen One 7',
    'Anticitizen One 8',
    'Anticitizen One 9',
    'Anticitizen One 10',
    'Follow Freeman 1',
]


if __name__ == '__main__':
    try:
        with open(GAMESTATE, 'r') as f:
            for line in f:
                if line.startswith('\t\t"data"\t\t"0x'):
                    hex = line.strip().rsplit('\t', 1)[1][1:-1]
                    binary = bin(int(hex[2:], 16))[2:].zfill(45)
                    print('Found:', binary.count('1'))
                    print('Missing:', binary.count('0'))
                    for i, visited in enumerate(map(int, binary[::-1])):
                        if not visited:
                            print(LOCATIONS[i])
                    break

    except IOError:
        print('Error: Unable to find gamestate.txt.')
        print('You may need to find at least one lambda cache first.')