CC: Cobblestone Generator

-- This cobblegen drops everything below it when full

local x = 1
turtle.select(x)
while true do
  while turtle.getItemSpace(x) < 1 do
    for i = 1, 16 do
      turtle.select(i)
      if turtle.getItemSpace(i) > 0 then x = i turtle.select(i)
        break end
      if turtle.getItemSpace(i) < 1 and i == 16 then
        for i = 1, 16 do
          turtle.select(i)
          turtle.dropDown()
        end
        turtle.select(1)
      end
    end
  end
  if turtle.detect() then turtle.dig() end
end