mine4

---Strip Mine---

--fuel in 1, Chests in 2

-- Create the function for refueling
function checkFuel()
  if turtle.getFuelLevel() <= 10 then
    turtle.select(1)
    turtle.refuel(1)
    turtle.select(1)
  end --if
end --checkFuel()

-- Create the function for unloading
function unload()
  for slot = 3, 16 do
    turtle.select(slot)
    turtle.dropDown()
  end --for
end --unload()

-- Create the function for checkingInventory
function checkInv(steps)
  goBack = false
  for slot = 3, 16 do
    if turtle.getItemCount() > 0 then
      goBack = true
    end --if
  end --for
  if goBack == true then
    turtle.turnLeft()
    turtle.turnLeft()
    for i = 1, steps do
      checkFuel()
      turtle.forward()
    end --for
  end --if
  unload()
end --checkInv()

-- Create the function for mining one
function digOne(steps)
  checkInv(steps)
  turtle.dig()
  checkFuel()
  turtle.forward()
  turtle.digUp()
end --digOne()

function run(number_tunnel, length_tunnel)
for tunnel = 1,number_tunnel do
  turtle.digDown()
  turtle.select(1)
  turtle.placeDown()
  vorwaerts = 0
  for steps = 0, length_tunnel do
    digOne()
    vorwaerts = vorwaerts + 1
  end --for
  turtle.turnLeft()
  turtle.turnLeft()
  for k = 0, vorwaerts do
    checkFuel()
    turtle.forward()
  end --for
  unload()
  turtle.turnRight()
  digOne()
  digOne()
  digOne()
  turnRight()
end --for
end --function

-- Main script
print("Input tunnel length:")
local length = read()
print("Tunnel quantity")
local quantity = read()
print("starting excavation...")
run(quantity, length)