slave_switch.lua

local MODEM_SIDE = "bottom"
local PROTOCOL = "rtm_top_switch"
local native = term.current()

local function draw(on)
  term.redirect(native)
  term.setBackgroundColor(colors.black)
  term.clear()
  term.setCursorPos(1,1)
  term.setTextColor(colors.yellow)
  print("SLAVE SWITCH")
  term.setTextColor(colors.white)
  print("ID: " .. os.getComputerID())
  print("Modem: " .. MODEM_SIDE)
  print("Redstone: top")
  print("")
  term.setTextColor(on and colors.lime or colors.gray)
  print("TOP JEL: " .. (on and "AKTIV" or "NINCS"))
  term.setTextColor(colors.lightGray)
  print("")
  print("Varakozas master parancsra...")
end

local function setTop(enabled)
  redstone.setOutput("top", enabled)
  draw(enabled)
end

rednet.open(MODEM_SIDE)
setTop(false)

while true do
  local senderId, msg, protocol = rednet.receive(PROTOCOL)
  if type(msg) == "table" then
    if msg.cmd == "set_top" then
      local enabled = msg.enabled and true or false
      setTop(enabled)
      rednet.send(senderId, {
        ok = true,
        id = os.getComputerID(),
        enabled = enabled,
      }, PROTOCOL)
    elseif msg.cmd == "ping" then
      rednet.send(senderId, {
        ok = true,
        id = os.getComputerID(),
        enabled = redstone.getOutput("top"),
      }, PROTOCOL)
    elseif msg.cmd == "get_state" then
      rednet.send(senderId, {
        ok = true,
        id = os.getComputerID(),
        enabled = redstone.getOutput("top"),
      }, PROTOCOL)
    end
  end
end