Tesla Turtle

--Turtle Teslas
version = "0.9.3"

--Load peripherals
sensor = peripheral.wrap("right")
modem = peripheral.wrap("left")

--Initilaze
local armed = "on"
for i = 1, 64 do
 modem.open(i)
end

--Functions
function scan()
 mob = sensor.getEntityIds("mob")
 player = sensor.getPlayers()
 status = {}
 status[0] = os.getComputerLabel()
 status[1] = armed
 status[2] = #player
 status[3] = #mob
end

function transmit()
 term.clear()
 term.setCursorPos(1,1)
 print("Version: "..version)
 term.write("Status: ")
 print(armed)
 term.write("Players: ")
 print(#player)
 term.write("Entities: ")
 print(#mob)
 modem.transmit(2, 1, textutils.serialize(status))
end

function receive()
 local event, side, rec, reply, message, distance = os.pullEvent("modem_message")

 if message == "teslaOn" then
  scan()
  armed = "on"
  transmit()
 end
 if message == "teslaOff" then
  scan()
  armed = "off"
  transmit()
 end
 if message == "update" then
  os.reboot()
 end
end

function trigger()
 scan()
 transmit()
 if armed == "on" then
  if #player == 0 then
   if #mob > 0 then
    redstone.setAnalogOutput("bottom", 9)
   end
   if #mob == 0 then
    redstone.setAnalogOutput("bottom", 0)
   end
  end
  if #player > 0 then
   redstone.setAnalogOutput("bottom", 0)
  end
 end
 sleep(3)
end



--Start Loop
while true do
parallel.waitForAny(receive, trigger)
end