import os import rand fn main() { mut arg := '31' if os.args.len != 2 { println('Usage: rule110 []') println('Using default `n` value: 31') } else { arg = os.args[1] } mut n := arg.int() if n > 200 || n < 3 { eprintln('`n` must be between 3 and 200!') exit(1) } print('\n') title := ' Rule 110 V Implementation ' title_len := title.len if n > title_len { for _ in 0 .. (n - title_len) / 2 { print('=') } print(title) for _ in 0 .. (n - title_len) / 2 { print('=') } } else { println(title[1..(title_len - 1)]) } mut generation_bin := []int{len: n} for i in 0 .. n { generation_bin[i] = rand.intn(2) } print('\n') // println('Random generated first automaton content: $generation_bin') for _ in 0 .. n { print_generation(generation_bin) next_generation(mut generation_bin) } } fn print_generation(arr []int) { symbols := [' ', '*']! for i in 0 .. arr.len { print(symbols[arr[i]]) } print('\n') } fn next_generation(mut gen []int) { mut arr := gen.clone() mut prev := 0 mut curr := 0 mut next := 0 for i in 0 .. arr.len { if (i - 1) % gen.len < 0 { prev = gen[gen.len - 1] } else { prev = gen[(i - 1) % gen.len] } curr = gen[i] next = gen[(i + 1) % gen.len] if prev == 1 { if curr == 1 { if next == 1 { // 111 arr[i] = 0 } else { // 110 arr[i] = 1 } } else { if next == 1 { // 101 arr[i] = 1 } else { // 100 arr[i] = 0 } } } else { if curr == 1 { if next == 1 { // 011 arr[i] = 1 } else { // 010 arr[i] = 1 } } else { if next == 1 { // 001 arr[i] = 1 } else { // 000 arr[i] = 0 } } } } gen = arr.clone() }