[Solved] menu becoming laggy after a while

Hi all,

I'm new in lua and computercraft. After reading many informations in the wiki, i've wrote a little program to pilot my nuclear reactor.

Here is the code (uncommented) : http://pastebin.com/QTjVeYuA

After a while this program is running, the menu become laggy.

Some infos :
m refers to the wireless modem
r refers to the nuclear information reader
cb refers to the chat box

the menu has 3 items :
"Demarrer" for starting the nuclear reactor
"Arreter" for stopping it
"Quitter" to stop the program

In the main loop, I use this line to force an event for checking the heat of the reactor :

os.startTimer(0.2)

I think that the "lag" comes from here, but I don't know how to avoid this and keep checking the heat, even if a key is not stroke.

if someone can help me understand why it generate lag and how to avoid that, it will be great.

Split into new topic.

After how long does it start lagging? I left it for about a minute and it was fine.

Maybe set the delay to 1 second and rather do it this way:

local selector = 1
local heatChecker = os.startTimer(1) -- start a timer for 1 second to check the heat of reactor.

while true do
  menuDraw(selector)
  local e = {os.pullEvent()}
  if e[1] == "key" then
    if e[2] == keys.down then
      selector = selector < #menu_options and selector+1 or 1
    elseif e[2] == keys.up then
      selector = selector > 1 and selector-1 or #menu_options
    elseif e[2] == keys.enter then
      if selector == 1 then
        m.transmit(1, 1, "start")
        term.setTextColor(colors.green)
        term.setCursorPos(1, termY)
        term.write("Le reacteur est demarre.     ")
      elseif selector == 2 then
        m.transmit(1, 1,"stop")
        term.setTextColor(colors.red)
        term.setCursorPos(1, termY)
        term.write("Le reacteur est arrete.      ")
      elseif selector == 3 then
        break
      end
    end
  elseif e[1] == "timer" and e[2] == heatChecker then
    heatChecker = os.startTimer(1)
    if verifheat() then
      error = "Mauvaise carte dans le lecteur !"
      break
    end
  end
end

Change the part from local selector = 1 in your code to the end of the while loop to this

Thx for the answer, I've got some lag after about 5-10 minutes (on a server).

Gonna try your fix asap. I was also thinking to do it with coroutines. Does it worth it ?

Oh quite a few minutes.. hmm..

I haven't really worked with coroutines so not sure.

Btw I had the os.startTimer(0.2) still in the loop, don't forget to remove it :P/>

Tried your version for an hour, no more lags :D/>

Thx remiX :)/>