View difference between Paste ID: 2NtvP9tF and SWXVpm72

--- Strip mining turtle program.
+--Hill Hollow Script
--- Luke *********, Ryszard ********. 13/12/12
+
--- updated by AzrylAero 5/3/2013
+
     mainshaft torches must be placed in slot 15
     tunnel torches must be placed in slot 16.]]
 
 -- Create the function for refueling
 function checkFuel()
   if turtle.getFuelLevel() <= 10 then
     turtle.select(14)
     turtle.refuel(1)
     turtle.select(1)
   end --if
 end --checkFuel()
 
 -- Create the turnAround function
 function turnAround()
   turtle.turnRight()
   turtle.turnRight()
 end --turnAround()
 
 -- Go to the next tunnel
 function digNext(torchCounter)
    turtle.turnRight()
   turtle.dig()
   turtle.forward()
   turtle.digUp()
   turtle.dig()
   turtle.forward()
   turtle.digUp()
   if torchCounter == 2 then
 
    turnAround()
    turtle.select(15)
    turtle.place()
    turnAround()
    print("Placing mainshaft torch")
   end
   turtle.turnLeft()
   print("turn Right")
   print("Next Tunnel")
 end
 
 
 --Dig Next End
 
 -- Digs the tunnel for the given length
 function tunnel(givenLength)
   local distance = 0
   for index = 1,givenLength do
     turtle.dig()
     if turtle.forward() then
       distance = distance + 1
     end --if
     turtle.digUp()
     turtle.moveUp()
     turtle.digUp()
     turtle.moveUp()
     turtle.digUp()
     turtle.moveUp()
     turtle.digUp()
     turtle.moveUp()
     turtle.moveDown(4)
     turtle.select(1)
     turtle.placeDown()
 
 -- Places a torch every 10 blocks
     if distance == 10 then
       turtle.select(16)
       print("Placing tunnel torch...")
       turnAround()
       turtle.place()
       turnAround()
       distance = 0
       checkFuel()
     end --if
   end --for
 
 -- Sends the turtle back to the start
    turtle.up()
    for index = 1,givenLength do
    turtle.back()
    end --for
    turtle.down()
 end --tunnel()
 
 -- Main script
 print("Input tunnel length:")
 local length = read()
 print("Tunnel quantity")
 local quantity = read()
 local torchNext = 0
 print("starting excavation...")
 checkFuel()
 -- Tunnel loop
   for index=1,quantity do
   if torchNext == 3 then
     torchNext = 0
   end
   tunnel(length)
   checkFuel()
   digNext(torchNext)
   torchNext = torchNext + 1
  end
 print("The tunnel(s) has been excavated!")