Simple Game of Life for learners

gistfile1.txt

from guizero import App, Waffle
from time import sleep
from random import randint

app = App()

gun = """........................................................
.........................*..............................
.......................*.*..............................
.............**......**............**...................
............*...*....**............**...................
.**........*.....*...**.................................
.**........*...*.**....*.*..............................
...........*.....*.......*..............................
............*...*.......................................
.............**.........................................
........................................................
........................................................
........................................................
........................................................
........................................................
........................................................
........................................................
........................................................
........................................................
........................................................
"""

grid = [[0 if char == "." else 1 for char in row] for row in gun.split()]

width = len(grid[0])
height = len(grid)

# Set the waffle to have a memory

my_waffle = Waffle(app, remember=False, width=width, height=height, pad=0, dim=10)

def check_neighbours(x, y):
    adjacent_cells = []
    neighbours = 0
    for i in range(x-1, x+2):
        for j in range(y-1, y+2):
            if (i, j) != (x, y):
                adjacent_cells.append((i,j))
    for cell in adjacent_cells:
        if width > cell[0] >= 0:
            if height > cell[1] >= 0:
                if grid[cell[1]][cell[0]] == 1:
                    neighbours += 1
    return neighbours

def tick():
    for y in range(height):
        for x in range(width):
            if grid[y][x] == 1:
                my_waffle.set_pixel(x, y, 'black')
            else:
                my_waffle.set_pixel(x, y, 'white')

    next_gen_live = []
    next_gen_dead = []

    for y in range(height):
        for x in range(width):
            neighbours = check_neighbours(x, y)
            if neighbours == 3:
                next_gen_live.append((x,y))
            elif neighbours < 2 or neighbours > 3:
                next_gen_dead.append((x,y))

    for cell in next_gen_live:
        grid[cell[1]][cell[0]] = 1
    for cell in next_gen_dead:
        grid[cell[1]][cell[0]] = 0

    app.after(100, tick)


tick()

app.display()