Autospawner Computer

local modem = peripheral.wrap("back")
local mtop = peripheral.wrap("top")
local mleft = peripheral.wrap("left")
status = 0
channel = 1
replyChannel = 2
modem.open(1)

function cls()
term.clear()
  term.setCursorPos(1,1)
  print("Autospawner Computer")
  if(status == 0) then
  print("Autospawner: ACTIVE")
  else
  print("Autospawner: deactivated")
  end
  print(" ")
end

function definemob(mob)
nmob = tonumber(mob)
if nmob == 1 then
return "pig"
else
return "ERROR"
end
end

redstone.setOutput("bottom", true)
cls()

while true do
print(" ")
write(": ")
text = io.read()
text_number = tonumber(text)

if text_number == nil then
  if text == "on" then
  redstone.setOutput("bottom", true)
  status = 0
  cls()
  else if text == "off" then
  redstone.setOutput("bottom", false)
  status = 1
  cls()
  else if text == "clear" then
  cls()
  else
  print("invalid input")
  print(" ")
  end
  end
  end
else if text_number >= 1 then
  if text_number <= 16 then
    modem.transmit(channel, replyChannel, text)  -- modem.transmit(number channel, number replyChannel, any message)
    print("Spawner changed to: ", definemob(text))
    mtop.print("Spawner changed to: ", definemob(text))
  end
  end
end


sleep(1)
end