pocket rednet

os.loadAPI("button")
rednet.open("back") -- side of the
-- size of the text on screen
msgAmount = 20 /1


whitelist = {18} -- ids to listen for
messages = {} -- list of messages that are going to be displayed.

function close()
 shell.run("startup")
end


button.CreateButton(1,26,26,1,1,1,close,colors.red,"none","x")


while true do

event,y,u,b,o = os.pullEvent()
button.DrawButton()
button.CheckButtons(event,u,b)

if event == "rednet_message"then
for i = 1, #whitelist do
  if tonumber(y) == whitelist[i] then
   table.insert(messages, u)
  end

if #messages > msgAmount then

  table.remove(messages,1)

end
for i = 1, #messages do
term.setCursorPos(1,i)
term.write(messages[i])
end
end
end
end