import utils

def grow(xl, yl, n):
	def init():
		for x in range(xl, xl+n):
			l, r, d = yl, yl+n, 1
			if x%2 == 1:
				l, r, d = yl+n-1, yl-1, -1
			for y in range(l, r, d):
				utils.mv(x, y)
				utils.soil()

	def run():
		check = list()
		for x in range(xl, xl+n):
			l, r, d = yl, yl+n, 1
			if x%2 == 1:
				l, r, d = yl+n-1, yl-1, -1
			for y in range(l, r, d):
				utils.mv(x, y)
				utils.water()
				utils.replant(Entities.Pumpkin)
				check.append((x, y))

		while len(check):
			nxt = list()
			for x, y in check:
				utils.mv(x, y)
				if not can_harvest():
					nxt.append((x, y))
					if get_entity_type() == Entities.Dead_Pumpkin:
						plant(Entities.Pumpkin)
			check = nxt

		utils.mv(xl, yl)
		utils.harv()

	return (init, run)