playerLog

--basic player logging
--variables
local sensorPos = 'top'
local sensor = 'null'
local playerList = 'null'
local prevList = playerList

--Main program logic

function Main()
  sensor = peripheral.wrap(sensorPos)
  playerData = sensor.getPlayerNames()
  prevList = playerList

  for _, name in pairs(playerData) do
    playerList = name , ":"
  end

  if(#playerData) then
    if(playerList != prevList) then
      print (playerList)
    end
  end
end


--initialise
if(peripheral.isPresent(sensorPos)) then
  print('success!')

  while true do
    Main()
    sleep(1)
  end
else
  print('Please place a sensor ontop')
end