Fix Nether

r=1
turtle.select(r)
while true do
 turtle.placeDown()
 if turtle.detectDown() then
  turtle.forward()
 end
 if r<16 and turtle.getItemCount(r)<1 then
  r=r+1
  turtle.select(r)
 end
 if r==16 and turtle.getItemCount(r)<1 then
  print "I am out of Items."
  turtle.reboot()
 end
 if turtle.detectDown() and turtle.detect() then
  Print "Take me home. I don't like it here."
  turtle.reboot()
 end
end