CC: Control (turtle main)

while true do
  fuel=turtle.getFuelLevel()
  refuel=math.ceil((3840-fuel)/80)
  shell.run("refuel",tostring(refuel))
  for i=1,16,1 do
    turtle.select(i)
    turtle.drop()
  end
  fuel=turtle.getFuelLevel()
  if fuel<2560 then
    turtle.up()
    refuel=(2560-fuel)/80
    turtle.suck(refuel)
    shell.run("refuel",tostring(refuel))
    turtle.down()
  end
  fuel=turtle.getFuelLevel()
  turtle.turnRight()
  for i=1,3 do
    turtle.forward()
  end
  turtle.turnRight()
  for i=1,5 do
    turtle.forward()
  end
  turtle.turnLeft()
  le=5
  while turtle.detect()==false do
    le=le+3
    turtle.turnRight()
    for i=1,3 do
    while turtle.forward()==false do
      sleep(3)
      turtle.dig()
    end
    end
    turtle.turnLeft()
  end
  shell.run("hole",tostring(fuel/3-10-le))
  while turtle.up()==false do
    sleep(4)
    turtle.digUp()
  end
  turtle.turnRight()
  while le>1 do
    while turtle.forward()==false do
    sleep(3)
    turtle.dig()
    end
    le=le-1
  end
  turtle.turnLeft()
  for i=1,3 do
    turtle.forward()
  end
  turtle.down()
  turtle.turnRight()
  turtle.forward()
end