Mineshaft-strip

print("How many rows?")
write("->")
rows = tonumber(read())
max_rows = rows

function forward()
  while not turtle.forward() do
    turtle.dig()
    sleep(.7)
  end
  turtle.digDown()
end

function way()
  for i=1, 3 do
    forward()
  end
end


function strip()
  for i=1, 8 do
    forward()
  end
end

function stripSide()
  strip()
  turtle.turnLeft()
  turtle.turnLeft()
  strip()
end

function stripRow()
  turtle.turnLeft()
  stripSide()
  stripSide()
  turtle.turnRight()
  forward()
end

while rows > 0 do
  term.clear()
  term.setCursorPos(1,1)
  print("Strip "..(max_rows-rows).." of "..max_rows.." done.")
  way()
  stripRow()
  rows = rows - 1
end