Countdown Timer

countdowntimer.livecode

local tCountdown

function countdown pPeriod, pAction
   set the numberFormat to "00."   
   if pAction = "Start" then
      put pPeriod into tCountdown
      repeat while tCountdown > -1
         put tCountdown div 60 & ":" & (tCountdown mod 60) into field "timer"
         wait 1 second with messages
         subtract 1 from tCountdown
         if tCountdown = 0 then
            put"times uop"
         end if
      end repeat
   else if pAction = "Stop" then
      put 0 into tCountdown
      put tCountdown div 60 & ":" & (tCountdown mod 60) into field "timer"
   end if
end countdown


Usage examples

on mouseUp
   get countdown(300, "Start")
end mouseUp

on mouseUp
   get countdown(0, "Stop")
end mouseUp