Seeing Stars

solver.py

import socket
from time import sleep

def toint(x):
    if x:
        return int(x)

    return 0


def check(x, y, bodies):
    pos = [
            (x - 1, y),
            (x, y - 1),
            (x - 1, y - 1),
            (x + 1, y - 1), 
            (x + 1, y), 
            (x + 1, y + 1), 
            (x, y + 1),
            (x - 1, y + 1)
    ]
    for p in pos:
        if p in bodies:
            return False

    return True


if name == '__main__':
    f = open('ticket', 'r')
    ticket = f.readline().encode()
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect(('stars.satellitesabove.me', 5013))
    sleep(0.1)
    s.recv(1024)
    s.send(ticket)

    buff = 10000
    round = 1
    while True:
        print(f'Round {round}')
        round += 1
        q = ''
        while True:
            sleep(0.1)
            r = s.recv(buff).decode()
            print(f'Read {len(r)} chars')
            if 'flag' in r:
                print(r)
                exit()

            q += r
            if not r or "Enter your answers, one 'x,y' pair per line." in r:
                break

        print(q)
        img = []
        for line in q.split('\n'):
            if line:
                try:
                    img.append(list(map(toint, line.split(','))))

                except:
                    pass

        stars = []
        bodies = []
        for row in range(len(img)):
            for col in range(len(img[row])):
                if img[row][col] > 150: 
                    bodies.append((row, col))
                    if check(row, col, bodies):
                        stars.append((row, col))

        for x, y in stars:
            print(f'{x},{y}')
            s.send(f'{x},{y}\n'.encode())
        
        s.send(b'\n')