CC_turtle_!tunnel

--!tunnel
--This is simple user friendly tunneling program
print("I will mine a 2x2 tunnel placing a torch every 5 blocks and return to the space to the right of my original position.")
print("")
sleep(0.5)
print("I need torches in slot one Boss!")
sleep(0.5)
print("I can also lay a floor if you put a Cobblestone in slot 3!")
local torch=1
local cobblestone=3
sleep(1)
print("How many torches can I place Boss? ")
  local x=read()
  local y=(x+1)*12
channel=os.getComputerID()
modem.transmit(128, channel, "Minion "..os.getComputerLabel().." has started tunneling, Sir!")
if y>=turtle.getFuelLevel() then
  print("Sorry boss, I don't have enough fuel")
  sleep(0.5)
  print("Give me fuel and try again")
else
  local z=0
  t.up()
  t.digUp()
  for i=1, x, 1 do
    for j=1, 5, 1 do
      t.forward()
      z=z+1
        if not turtle.detectDown() then
          turtle.select(cobblestone)
          turtle.placeDown()
        end
      t.digUp()
      t.digDown()
    end
    t.up()
    t.dig()
    t.right()
    t.dig()
    t.down()
    t.left()
    turtle.select(torch)
    turtle.placeUp()
  end
  t.right()
  t.forward()
  t.digUp()
  t.right()
  for j=1, z do
   t.forward()
   if not turtle.detectDown() then
    turtle.select(cobblestone)
    turtle.placeDown()
   end
   t.digUp()
  end
end

--Now he sends a message to a central computer
modem.transmit(128, channel, "Minion "..os.getComputerLabel().." has finished a tunnel, Sir!")