from itertools import product
from random import choice
from time import sleep
from os import system
from math import floor
from colorama import Back, Fore, Style
################################################################################
# Simulation of Conway's Game of Life. The goal here was to write this with a
# small amount of code as a proof-of-concept that could be run in the terminal.
#
# If you'd like to tinker with the rules, see the conditionals defined in the
# `advance/1` function. For other parameters, like the board size and refresh
# rate, refer to the while-loop defined at the bottom of this file.
################################################################################
def init_board(n, init_alive_percentage):
"""Initialize a board of size `n` by `n`. Supply a percentage,
`init_alive_percentage`, representing the number of cells in the board that
should be alive from the start."""
alive_count = floor(n * init_alive_percentage)
distribution = [True] * alive_count + [False] * (n - alive_count)
return [[choice(distribution) for _ in range(n)] for _ in range(n)]
def neighbors(coord, board):
"""Return the neighbors for a given `coord` on a `board`."""
n = len(board)
row, col = coord
return [
board[(row + row_d) % n][(col + col_d) % n]
for row_d, col_d in product([-1, 0, 1], [-1, 0, 1])
if (row_d, col_d) != (0, 0)
]
def advance(board):
"""Advance the state of the `board` from T[n] to T[n+1]."""
n = len(board)
new_board = [[False for _ in range(n)] for _ in range(n)]
for row in range(n):
for col in range(n):
alive_count = len([x for x in neighbors((row, col), board) if x])
# Loneliness
if alive_count == 0:
new_board[row][col] = False
# Status Quo
elif alive_count == 1:
new_board[row][col] = board[row][col]
# Cooperation
elif alive_count == 2:
new_board[row][col] = True
# Resource starvation
elif alive_count >= 3:
new_board[row][col] = False
return new_board
def print_board(board):
"""Print the game `board` in a human-readable way."""
result = ''
for row in board:
for col in row:
if col:
result += Back.GREEN + '1 ' + Style.RESET_ALL
else:
result += Back.RED + '0 ' + Style.RESET_ALL
result += '\n'
print(result)
board = init_board(100, 0.50)
while True:
system('clear')
print_board(board)
sleep(0.15)
board = advance(board)
