neuropercolation/examples/conways_game_of_life.py

#!/usr/bin/env python3
"""
Copyright 2019 Richard Feistenauer

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""

# pylint: disable=wrong-import-position
# pylint: disable=missing-function-docstring

import random
import contextlib
import sys
import os
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))

from cellular_automaton import CellularAutomaton, MooreNeighborhood, CAWindow, EdgeRule

ALIVE = [1.0]
DEAD = [0]


class ConwaysCA(CellularAutomaton):
    """ Cellular automaton with the evolution rules of conways game of life """

    def __init__(self):
        super().__init__(dimension=[100, 100],
                         neighborhood=MooreNeighborhood(EdgeRule.FIRST_AND_LAST_CELL_OF_DIMENSION_ARE_NEIGHBORS))

    def init_cell_state(self, __):  # pylint: disable=no-self-use
        rand = random.randrange(0, 16, 1)
        init = max(.0, float(rand - 14))
        return [init]

    def evolve_rule(self, last_cell_state, neighbors_last_states):
        new_cell_state = last_cell_state
        alive_neighbours = self.__count_alive_neighbours(neighbors_last_states)
        if last_cell_state == DEAD and alive_neighbours == 3:
            new_cell_state = ALIVE
        if last_cell_state == ALIVE and alive_neighbours < 2:
            new_cell_state = DEAD
        if last_cell_state == ALIVE and 1 < alive_neighbours < 4:
            new_cell_state = ALIVE
        if last_cell_state == ALIVE and alive_neighbours > 3:
            new_cell_state = DEAD
        return new_cell_state

    @staticmethod
    def __count_alive_neighbours(neighbours):
        alive_neighbors = []
        for n in neighbours:
            if n == ALIVE:
                alive_neighbors.append(1)
        return len(alive_neighbors)


if __name__ == "__main__":
    with contextlib.suppress(KeyboardInterrupt):
        CAWindow(cellular_automaton=ConwaysCA()).run(evolutions_per_second=40)