Cellular Automaton - Ring of arrays with Go

ring-of-arrays.go

package main

import "fmt"
import "container/ring"
import "math/rand"

type Cell struct {
	alive bool
}

type Automaton struct {
	size  int
	cells []Cell
}

func NewAutomaton(size int) Automaton {
	a := Automaton{size: size}
	a.cells = make([]Cell, a.size)
	return a
}

func (a *Automaton) Randomize() {
	for i := 0; i < len(a.cells); i++ {
		a.cells[i].alive = rand.Intn(2) == 1
	}
}

type Buffer struct {
	size      int
	automaton *Automaton
	history   *ring.Ring
}

func NewBuffer(size int, automaton *Automaton) Buffer {
	b := Buffer{size: size, automaton: automaton}
	b.history = ring.New(b.size)

	for i := 0; i < b.history.Len(); i++ {
		b.automaton.Randomize()
		b.history.Value = make([]Cell, len(b.automaton.cells))
		copy(b.history.Value.([]Cell), b.automaton.cells)
		b.history = b.history.Next()
	}

	return b
}

func (b *Buffer) Next() {
	b.automaton.Randomize()
	b.history.Value = make([]Cell, len(b.automaton.cells))
	copy(b.history.Value.([]Cell), b.automaton.cells)
	b.history = b.history.Move(1)
}

func main() {
	automaton := NewAutomaton(5)
	automaton.Randomize()

	buffer := NewBuffer(5, &automaton)

	buffer.Next()

	buffer.history.Do(func(p interface{}) {
		fmt.Println(p)
	})
}