tunnel

function refuel()
  if turtle.getFuelLevel() < 200 then
  turtle.select(1)
  turtle.refuel(10)
  print("Refueled")
 else
  print("Enough Fuel")
 end
end

function mine()
 while turtle.detect() do
  turtle.dig()
  sleep(0.5)
 end
 turtle.forward()
 while turtle.detectUp() do
  turtle.digUp()
  sleep(0.5)
 end
end

function checkFull()
 if turtle.getItemCount(16) > 0 then
   turtle.digDown()
   turtle.select(3)
   turtle.placeDown()
   print("Chest Placed")
   for i = 5,16 do
    turtle.select(i)
    turtle.dropDown()
   end
   turtle.select(2)
 end
end

function whole()
 mine()
 turtle.turnRight()
 mine()
 turtle.turnLeft()
 mine()
 turtle.turnLeft()
 mine()
 turtle.turnRight()
end

function wholecheck()
 checkFull()
 whole()
end

print("Welcome to the Tunneling Turtle interface")
sleep(2)
print("How long will the tunnel be?")
local x = read()

refuel()
sleep(0.5)

for i = 1,(x/2) do
 wholecheck()
end

print("Hope You Are Happy With Your Tunnel")