tunnel2

print("This program digs tunnel 3x3") --and even put every 5 blocks torch on wall
print("Important ! place torches in slot 1 and solid block to slot 2 !")
print("How long tunnel do you want ? ")
local x = read()
local times = 0
print("Digging "..x.." blocks long tunnel")
turtle.turnLeft()
while not turtle.forward() do
  turtle.dig()
end
turtle.turnRight()


for i = 1, x do

  while not turtle.forward() do
    turtle.dig()
  end

  turtle.turnRight()

 for j = 1, 2 do
  for i = 1, 2 do
    while not turtle.forward() do
      turtle.dig()
    end
  end
  turtle.turnLeft()
  turtle.turnLeft()
  while not turtle.up() do
    turtle.digUp()
  end
 end

 for k = 1, 2 do
   while not turtle.forward() do
    turtle.dig()
   end
 end

 turtle.turnLeft()
 turtle.turnLeft()
 turtle.down()
if math.fmod(times,5) == 0 then
  for u = 1, 2 do
   while not turtle.forward() do
     turtle.dig()
   end
  end
 if not turtle.detect() then
  turtle.select(2)
  turtle.place()
 end
  turtle.select(1)
  turtle.back()
  turtle.place()
  turtle.down()
  turtle.forward()

else
 turtle.down()
 for l = 1, 2 do
   while not turtle.forward() do
     turtle.dig()
   end
 end
end
 turtle.turnRight()
times = times + 1
local filled = 0
  for q = 3, 16 do
     if turtle.getItemCount(q) >= 1 then
    filled = filled + 1
    end
  end

  if filled > 8 then
   turtle.turnRight()
   turtle.forward()
   turtle.turnRight()
   for z = 1, times do
     turtle.forward()
   end
   for t = 3, 16 do
     turtle.select(t)
     turtle.drop()
   end
   turtle.turnRight()
   turtle.turnRight()
   for w = 1, times do
     turtle.forward()
   end
   turtle.turnLeft()
   turtle.forward()
   turtle.turnRight()
  end

end
--tunnel end
turtle.turnRight()
turtle.forward()
turtle.turnLeft()
print("And done")
local fuelstate = turtle.getFuelLevel()
print("I have "..fuelstate.." fuel")

if fuelstate < 1000 then
print("Please refuel me")
end