"""

Description: Cellular automaton server.

Author: Eugen Sawin <sawine@me73.com>

"""

import sys

import math

import rules

import gridmarshal as marshal

from grid import Grid

import argparse

configs = {rules.Rule1: (((0, 0), 1), ((-1, 0), 1), ((1, 0), 1), ((0, 1), 1), 

((0, -1), 1)), 

rules.Rule2: (((0, 0), 1), ((-1, 0), 1), ((1, 0), 1), ((0, 1), 1), ((0, -1), 1)),

rules.PotentialGrowth: (((0, 0), 4),)}

rulemap = {"1": rules.Rule1, "2": rules.Rule2, "3": rules.PotentialGrowth}

def main(rule, iterations, dumpfile):

	grid = Grid()

	for pos, value in configs[type(rule)]:

		grid.set(pos, value)	

	last_pi = 3.0

	for i in range(iterations):

		A = len(grid)

		r = grid.width() / 4.0 + grid.height() / 4.0

		r_ideal = math.sqrt(A / math.pi)

		A_ideal = r**2 * math.pi

		pi = A / r**2

		pi = (pi + last_pi) / 2.0

		last_pi = pi

		print "%i %f(%f) %i(%i) %f" % (i, r, r - r_ideal, 

					       A, A - A_ideal, pi)

		grid = rule.iterate(grid)

		if dumpfile:

			marshal.dumpGrid(grid, dumpfile)

if __name__ == "__main__":

	parser = argparse.ArgumentParser(description="cellular automaton.")

	parser.add_argument("iterations", type=int, help="number of iterations")

	parser.add_argument("--rule", "-r", default="3")

	parser.add_argument("--persistent", "-p")

	args = parser.parse_args()

	main(rulemap[args.rule](), args.iterations, args.persistent)