test

local sensor = peripheral.wrap('top')
local white_list = {'Seryoga', 'Desectus', 'AlexVBG', 'NEO', 'Ruslan1911', 'MorfSD', 'Nedfreetoplay'}
local distance_locate = 3

local function open_door()
  rs.setOutput('left', true)
  print("Open")
end

local function close_door()
  rs.setOutput('left', true)
  rs.setOutput('left', false)
  print("Close")
end


local function main()
  close_door()

  while true do
    local open = false
    for No, name in pairs(white_list) do
      local try, player = pcall(sensor.getPlayerByName, name)

      if try == true then
        local distance = 0

        for label, pos in pairs(player['position']) do
          distance = distance + pos * pos
        end
        distance = math.sqrt(distance)

        if distance < distance_locate then
          open = true
          break
        end
      end
    end


    if open == true then
      open_door()
    else
      close_door()
    end

    sleep(1)
  end
end

main()