GauDoor v0.2

os.loadAPI("ocs/apis/sensor")

function openDoor()
  rs.setOutput("left",true)
end

function closeDoor()
  rs.setOutput("left",false)
end

prox = sensor.wrap("top")

function checkForPlayers()
  targets = prox.getTargets()
  for k, v in pairs(targets) do
     if ( v.Name == "player" ) then
       return true
     end
  end
  return false
end


closeDoor()

while true do
  if ( checkForPlayers() ) then
    openDoor()
  else
    closeDoor()
  end
  os.sleep(1)
end