dig2

function fuel ()
  if turtle.getFuelLevel() < 128 then
    turtle.refuel(16)
  end
end

function dig ()
  while turtle.detect() == true do
    turtle.dig()
    sleep(.5)
  end
  while turtle.detectUp() == true do
    turtle.digUp()
    sleep(.5)
  end
end

function move ()
  if turtle.detect() == false then
    turtle.up()
      if turtle.detect() == false then
        turtle.down()
        if turtle.detect() == false then
          turtle.turnRight()
          if turtle.detect() == true then
            turtle.turnLeft()
            mine()
          elseif turtle.detect() == false then
            turtle.turnLeft()
            turtle.turnLeft()
            if turtle.detect() == true then
              turtle.turnRight()
              mine()
            elseif turtle.detect() == false then
              turtle.turnRight()
            end
          end
        elseif turtle.detect() == true then
          mine()
        end
      elseif turtle.detect() == true then
        turtle.down()
        mine()
      end
  elseif turtle.detect() == true then
    mine()
  end
  turtle.forward()
  if turtle.detectDown() == false then
    turtle.select(3)
    turtle.placeDown()
    turtle.select(1)
  end
end

function mine  ()
  fuel()
  if full() == true then
    return
  end
  dig()
  turtle.turnRight()
  dig()
  turtle.turnLeft()
  turtle.turnLeft()
  dig()
  turtle.turnRight()
  turtle.up()
  dig()
  turtle.turnRight()
  dig()
  turtle.turnLeft()
  turtle.turnLeft()
  dig()
  turtle.turnRight()
  turtle.down()
  dig()
  turtle.turnLeft()
  dig()
  turtle.turnRight()
  turtle.turnRight()
  dig()
  turtle.turnLeft()
end
function full ()
  if turtle.getItemCount(15) > 0 then
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.up()
    turtle.select(16)
    drop()
  end
end

function drop ()
    while turtle.compareDown(16) == false do
      turtle.forward()
    end
    for y = 4, 15, 1 do
      turtle.select(y)
      turtle.dropDown()
    end
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.forward()
    turtle.down()
    turtle.select(1)
    while x < 3 do
      x = x + 1
      print(x)
      on()
    end
    print("Press any key to continue")
    local event, key = os.pullEvent("key")
      print("Rebooting")
      os.reboot()
end

function torch ()
  for x = 0, 8, 1 do
    move()
  end
  if full() == true then
    return
  end
  turtle.turnRight()
  turtle.turnRight()
  turtle.select(2)
  turtle.place()
  turtle.select(1)
  turtle.turnRight()
  turtle.turnRight()
end

function on ()
  while true do
    torch()
    full()
    sleep(3)
  end
end

x = 0
while true do
  on()
end