PlayerDetector - SmartHelmet Displayer

-- START API - smHUD

sh=peripheral.find("antenna")

function getHUD(player)
 hm = sh.getHUD(player)

  return hm
end

function getGUI(player)
  hm = sh.getHUD(player)

  return hm.getGUI()

end

-- END API - smHUD

-- Grab Huds From These Employies
local huders = {
  "NAME1",
  "NAME2",
}

function getEmHUDS(hudppl)

  local emhuds = {}

  for i = 1, #hudppl do
    emhuds[#emhuds+1] = smHUD.getHUD(hudppl[i])
  end

  return emhuds

end

-- clear huds

function clearHUDS(huds)
  for i = 1, #huds do
    huds[i].clear()
    huds[i].sync()
  end
end

-- Hud Broadcasting
function broadcastHUD(huds,message,x,y)

  for i = 1, #huds do
      huds[i].drawString(tostring(message),x,y,125,true)
      huds[i].add()
  end

end

-- Get Utils
local pd = peripheral.wrap("right")
os.loadAPI("smHUD")
local pRange = 100
local userhuds = {}
userhuds = getEmHUDS(huders)
plrz = {}

function getPlayers()
    return pd.getNearbyPlayers(tonumber(pRange))
end

function refresh()
   clearHUDS(userhuds)
   broadcastHUD(userhuds,"Players Near Lab - ",1,1)
   broadcastHUD(userhuds,"In format of: ",1,11)
   broadcastHUD(userhuds,"USERNAME",1,30)
   broadcastHUD(userhuds,"DISTANCE",1,40)
   local i = 1
    for k, v in pairs(plrz) do
       for l, m in pairs(v) do
          i = i + 1
          broadcastHUD(userhuds,"["..tostring(m).."]",100,9+(i*10))
       end
    end
end

getPlayers()
refresh()

-- Detection Loop
while true do
    sleep(0.01)
    local nplrz = getPlayers()
    if(plrz ~= nplrz)then
    plrz = nplrz
    refresh()
    end
end