package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {
	// get a reader for user input (to get newline before each time step)
	in := bufio.NewReader(os.Stdin)

	// make a 12-unit wide world
	w := NewWorld(12)

	// run the simulation for 500 time steps
	for i := 0; i < 500; i++ {
		// output world using its String function
		fmt.Println(w)
		fmt.Println()

		// update for next time step
		w.Update()

		// wait for newline before next time step
		in.ReadString('\n')
	}

	// output the final state of the world
	fmt.Println(w)
}