turtle miner 2.0

rednet.open("right")
local Args = {...}
local func

function cleanup()
  turtle.select(16)
  turtle.placeDown()
  for i = 1, 12 do
    turtle.select(i)
    turtle.dropDown()
  end
  turtle.digDown()
end

function fuel()
  turtle.select(15)
  turtle.placeDown()
  turtle.select(14)
  turtle.suckDown()
  turtle.dropDown(turtle.getItemCount(1) - 4)
  turtle.refuel()
  turtle.select(15)
  turtle.digDown()
end

function checkFuel()
  if turtle.getFuelLevel() < 400 then
    fuel()
  end
end

function cycle()
  turtle.dig()
  turtle.forward()
  turtle.digUp()
  turtle.digDown()
  while turtle.getItemCount(1) > 20 do
    cleanup()
    sleep(2)
  end
  checkFuel()
end

function checkIn(fromID)
  rednet.send(fromID, Args[1])
end

while true do
  sleep(0)
  local id,msg,dist = rednet.receive()
    if msg == "cycle" then
      cycle()
    elseif msg == "checkIn" then
      checkIn()
    end
  func = loadstring(msg.."(...)")
  setfenv(func,getfenv())
  func (id)
  rednet.send(id,"Done")
end
if msg == "cycle" then
  cycle()
elseif msg == "checkIn" then
  checkIn()
end