Flooring

-- Turtle utility program to cover holes or build floors in pits (I make pits)
-- v1.0 20140803a first draft, room for improvement
-- floor material in second slot
-- position on left side of room

flip=0
slot=3
turtle.select(2)
turtle.forward()

while not turtle.detectDown() do
  while turtle.getItemCount(2)<1 and slot<16 do
    turtle.select(slot)
    turtle.transferTo(2)
    slot=slot+1
    turtle.select(2)
  end

-- if turtle runs out, it should have x,y
-- offset to return to start at this point

    turtle.placeDown()
  if turtle.detect() then
    turtle.turnRight()
  end
  turtle.forward()
  if turtle.detectDown() then
    if flip==0 then
      turtle.turnRight()
      turtle.forward()
      turtle.turnRight()
      turtle.forward()
      flip=1
    elseif flip==1 then
      turtle.turnLeft()
      turtle.forward()
      turtle.turnLeft()
      turtle.forward()
      flip=0
    end
  end
end