convey-life

#!/usr/bin/env python3
import random
import sys
from time import sleep

class Life:
	symbols = ["\033[37;47m.\033[0m", "\033[31;41m#\033[0m"]
	rules = [
				# 0, 1, 2, 3, 4, 5, 6, 7, 8
				[ 0, 0, 0, 1, 0, 0, 0, 0, 0 ], # dead
				[ 0, 0, 1, 1, 0, 0, 0, 0, 0 ], # live
			]
	def __init__(self, w, h):
		self.w = w
		self.h = h
		self.cells = []
		self.shifts = [
						-1, -1,
						 0, -1,
						+1, -1,
						-1, +1,
						 0, +1,
						+1, +1,
						-1,  0,
						+1,  0,
						]
		self.clear()
		self.forms = {
						'acorn': [1,0, 3,1, 0,2, 1,2, 4,2, 5,2, 6,2,],
						'glider': [0,0, 2,0, 2,1, 1,1, 1,2,],
						}
		self.place(15,15, self.forms['acorn'])
		self.place(25,25, self.forms['glider'])
		self.place(25,25, self.forms['glider'])
	
	def clear(self):
		self.cells = [ 0 for i in range(0,self.w * self.h) ]

	def fill(self, f):
		self.cells = [ round( random.random()*f ) for i in range(0,self.w * self.h) ]
	
	def place(self, x,y, a):
		for i in range(0, int(len(a)/2)):
			self.cells[ a[i*2] + x + (a[i*2+1]+y) * self.w ] = 1

	def render(self):
		s = ''
		n = 0
		for y in range(0,self.h):
			for x in range(0,self.w):
					s = '%s%s'%(s, self.symbols[ self.cells[n] ] )
					n = n + 1
			s = "%s\n"%(s)
		sys.stdout.write(s);
	
	def process(self):
		old = self.cells[:]
		cnt = self.w * self.h
		for y in range(0, self.h):
			for x in range(0, self.w):
				n = 0
				for j in range(0,8):
					pos =  ( x+self.shifts[j*2]+self.w ) % self.w
					pos += ( ( y+self.shifts[j*2+1]+self.h ) % self.h ) * self.w
					n += old[ pos ]
				pos = x + y * self.w
				self.cells[pos] = self.rules[ old[pos] ] [n]


life = Life(64, 32)
while True:
	print("\n\n\n\n");
	life.render()
	for i in range(0,1):
		life.process()
	sleep(0.1)