build_wall

local k_distance= 20

turtle.suckUp()
turtle.refuel()

turtle.forward()

turtle.dropUp()

turtle.suckDown()

for index= 1,(k_distance-1) do
  turtle.forward()
end

local wifi= peripheral.wrap("left")

wifi.open(6345)

local
  event,
  modemSide,
  senderChannel,
  replyChannel,
  message,
  senderDistance=
    os.pullEvent("modem_message")

if message == "go" then
  turtle.up()
  turtle.down()
end

turtle.turnLeft()
turtle.forward()
turtle.forward()
turtle.turnLeft()

for index= 1,k_distance do
  while not turtle.forward() do
    os.sleep(1)
  end
end