Collatz conjecture 3n + 1 code

collatz.gd

extends Node2D

# Has a Line2D child node to plot a curve using each number of the series that tends to 1

const XSTEP = 10

var x = 0

func _ready():
	calc(211)

func calc(n: int):
	add_point(n)
	if n == 1 or x == 1920: return
	if n % 2 == 0:
		n /= 2
	else:
		n = n * 3 + 1
	return calc(n)

func add_point(n):
	x += XSTEP
	$Line.add_point(Vector2(x, n))