import time , itertools
__doc__=" Mr Conway_s Game Of Life simulation in python 2 and 3 "
width = 55 ; height = 55 # size of life habitat , e.g. a simulated
meteorite, bolide , etc.
vmap = [['D' for w in range(width)] for h in range(height)] # D =
Dead at first
def neighbours(point):
x,y = point
yield x + 1 , y
yield x - 1 , y
yield x , y + 1
yield x , y - 1 # this is proof that life can emerge
inside of computers and cellular automatons,
yield x + 1 , y + 1 # and evolve through memory, attack
other cells and morph into toads, pulsars, etc..
yield x + 1 , y - 1
yield x - 1 , y + 1 # spray your memory with space alien
patterns and life evolution will start in your machine !
yield x - 1 , y - 1
def ageing(habitat):
newstate = set()
recalc = habitat | set(itertools.chain(*map(neighbours, habitat)))
for point in recalc:
count = sum((neigh in habitat) for neigh in neighbours( point))
if count == 3 or (count == 2 and point in habitat): #
standard rule def. - a life cell having less than 2 alive neighbours will die
newstate.add(point)
return newstate
glider = set([ (40,40) , (41,40) , (42,40) , (40,41) , (41,42) ]) #
patterns of life: gliders, boats, guns, imps, toads, pulsars and so on
previous = set([ ( 0, 0) , ( 1, 0) , ( 2, 0) , ( 0, 1) , ( 1, 2) ]) #
offset on screen / place during last step in life
for lifetime in range(300): #
number of simulated lifetime steps (e.g. 300 / 0.1 sleep = 30 seconds) before
death occurs
try:
time.sleep( 0.1 ) # slow
it down
previous = glider ; glider = ageing(glider)
for tup in glider :
el=tup ; xx=el[0] % width ; yy =el[1] % height ;
vmap[xx][yy]='L' # Live cell has emerged
for tup in previous :
el=tup ; xx=el[0] % width ; yy =el[1] % height
if tup not in glider : vmap[xx][yy]='D'
# Dead cell
# put more life patterns in this lifespan loop and let them evolutionize!
vtxt = [''.join('*' if cell=='L' else ' ' for cell in row) for row in vmap]
print('\033[H\033[J')
# clear screen
print('\n'.join(reversed(vtxt)))
except: pass
print("Simulated lifetime of the glider is over. May there live soon a new
glider in the life habitat of your screen.")
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