gol.py

import board
import lib.adafruit_ht16k33.matrix as M
i2c = board.I2C()

matrix = M.Matrix8x8(i2c)
matrix.fill(0)
matrix.brightness = 0.1
matrix.blink_rate = 0
# glider
matrix[2,2] = 1
matrix[2,3] = 1
matrix[2,4] = 1
matrix[1,2] = 1
matrix[0,3] = 1

def print_lifeboard(new_lives):
    for y in range(0, 8):
        for x in range(0, 8):
            matrix[x, y] = 1 if (x,y) in new_lives else 0

def get_transition(lifeboard, x, y):
    cell = lifeboard[(x,y)]
    positions = [[x+1, y],[x+1, y+1],[x+1, y-1],[x, y+1],[x, y-1],[x-1, y+1],[x-1, y],[x-1, y-1]]
    num_live = sum([matrix[x % 7, y % 7] for x,y in positions])
    if cell == 1 and (num_live < 2 or num_live > 3): return 0
    if cell == 1 and (num_live == 2 or num_live == 3): return 1
    if cell == 0 and (num_live == 3): return 1
    return 0

def iterate():
    global matrix
    while True:
        next_lives = []
        for x in range(0, 8):
            for y in range(0, 8):
                if get_transition(matrix, x, y):
                    next_lives.append((x,y))
        print_lifeboard(next_lives)
        
iterate()