Dig Shaft

--Dig Shaft

-- Dig 1x3 Function digIt
function digIt()
    while turtle.detect() do
      turtle.dig()
      os.sleep(0.5)
    end
    turtle.forward()
    while turtle.detectDown() or turtle.detectUp() do
      turtle.digUp()
      turtle.digDown()
    end
  end

  -- Place torch behind
  function placeTorch()
    turtle.down()
    turtle.back()
    turtle.right()
    turtle.right()
    turtle.select(16)
    turtle.placeForward()
    turtle.right()
    turtle.right()
    turtle.forward()
    turtle.up()
  end

  --set everything to 0
  local run = 0
  local y = 0
  local z = 0

  --Enter length
  term.write("Branch length: ")
  run = read()

  for x = 1, run do
    y = x - 1
    z = y % 10
    if z == 1 then
      placeTorch()
    end
    digIt()
  end

  -- Place final torch mid wall
  turtle.down()
  turtle.turnRight()
  turtle.turnRight()
  turtle.select(16)
  turtle.placeUp()

  --Return to start
  for x = 1, run do
    turtle.forward()
  end