NetherStairs

-- The idea here is to keep the stairs enclosed to bridge gaps of air or lava
-- GhastGuard[R]
placed=0
place=1

function blocksides()
  turtle.turnRight()
  if turtle.place() then
    placed=placed+1
  end
  turtle.turnRight()
  turtle.turnRight()
  if turtle.place() then
    placed=placed+1
  end
  turtle.turnRight()
end

function tup()
  -- turtle up
  turtle.digUp()
  turtle.up()
end

function digstep()
  -- wub wub
  -- we need 1 to stand on below us, one for our feet, one for our head, one to jump into, and one above that for a roof...
  if turtle.placeDown() then
    placed=placed+1
  end
  blocksides()
  tup()
  blocksides()
  tup()
  blocksides()
  -- roof
  if turtle.placeUp() then
    placed=placed+1
  end
  -- return to head, move forward
  turtle.down()
  turtle.dig()
  turtle.forward()
end

for x=1, 50 do
  digstep()
  if placed>57 then
    placed=0
    place=place+1
    turtle.select(place)
  end
end