computercraft turtle chemin

-- startup: os.loadAPI("waypoint")


function wayforward()
            turtle.select(2)
            return turtle.compareDown()
    end
function wayleft()
            turtle.select(1)
            return turtle.compareDown()
    end
function wayright()
            turtle.select(3)
            return turtle.compareDown()
    end
function waystop()
            turtle.select(4)
            return turtle.compareDown()
    end

function go()

	stop = false

	print("slot 1 = left")
	print("slot 2 = forward")
	print("slot 3 = right")
	print("slot 4 = stop")

while stop ~= true do


	while wayforward() do
		turtle.forward()
	end

	while wayleft() do
		turtle.turnLeft()
		turtle.forward()
	end

	while wayright() do
		turtle.turnRight()
		turtle.forward()
	end

	if waystop() == true then
		stop = true
		print("stop")
	end

end

end

function goback()
	stop = false


	while stop ~= true do

		while wayforward() do
		turtle.forward()
		end

		while wayleft() do
		turtle.turnRight()
		turtle.forward()
		end

		while wayright() do
		turtle.turnLeft()
		turtle.forward()
		end

		if waystop() == true then
		stop = true
		print("stop")
	end

	end

end

function back()
	turtle.turnRight()
	turtle.turnRight()
	turtle.forward()
end