[Lua] [question] help debugging wireless flashing hello sine

hay ppl

i have bean working on a remote flashing hello sine for my friends server and this is the code

function hello()
	print(" ")
	print(" ")
	print(" ")
	print(" ")
	print("	__	__   _______   __   __	 ______")
	print("   |  |  |  | |	   | |  | |  |   /	  ")
	print("   |  |  |  | |   ____| |  | |  |  /  ____  ")
	print("   |  |__|  | |  |____  |  | |  | /  /	  ")
	print("   |		| |	   | |  | |  | |  |	|  |")
	print("   |   __   | |   ____| |  | |  | |  |	|  |")
	print("   |  |  |  | |  |____  |  | |  |   ____/  /")
	print("   |  |  |  | |	   | |  | |  |  		/")
	print("   |__|  |__| |_______| |__| |__|   ______/")
end
rednet.open("top")
term.clear()
term.setCursorPos(1,1)
OOS = 0
while true do
	C,ID,MS = os.pullEvent()
	if MS == "1" then
		OOS = 1
	end
	while OOS == 1 do
		C,ID,MS = os.pullEvent()
		hello()
		sleep(0.5)
		term.clear()
		term.setCursorPos(1,1)
		sleep(0.1)
		if MS == "2" then
			OOS = 0
		end
	end
end

it is suppose to tern on and blink wen it gets a 1 and tern off wen it gets a 2 but it only blinks one time
please help

It only blinks once because its runs through the loop once then stops at the os.pullEvent() and waits for an event. There is a couple of ways to solve this. I would probably just use a timer to trigger an event allowing the loop to proceed.

while OOS == 1 do
    os.startTimer(0.5)
    C,ID,MS = os.pullEvent()
    hello()
    sleep(0.5)
    term.clear()
    term.setCursorPos(1,1)
    sleep(0.1)
    if MS == "2" then
        OOS = 0
    end
end

The problem is, like luanub said, that the os.pullEvent call makes your program wait for an event (a key press, a rednet message, etc.). You can use a timer to do the blink part while receiving the rednet message to stop.
Try with this:

local function blink()
  local on = false
  local timer = os.startTimer(0.5) -- start the timer
  while true do
    local evt, arg, msg = os.pullEvent() -- get an event
    if evt == "timer then -- if it's a timer event
	  if arg == timer then -- and it's our timer
	    on = not on -- switch the blinking status
	    if on then
		  hello() -- draw the text
	    else
		  term.clear() -- clear the screen
		  term.setCursorPos(1, 1)
	    end
	    timer = os.startTimer(0.5) -- restart the timer
	  end
    elseif evt == "rednet_message" then -- if it's a rednet message
	  if msg == "2" then -- and it's the stop message
	    term.clear() -- clear the screen
	    term.setCursorPos(1, 1)
	    break -- break the loop
	  end
    end
  end
end

while true do
  local id, msg = rednet.receive() -- wait for the message
  if msg == "1" then -- check if it's the start message
    blink() -- start blinking
  end
end

It waits for a message to start (the message "1"), and then it starts showing the blinking text on the screen while waiting for a message to stop (the message "2").

thanks it helped PS Mystic you did not close of your string on line 6 "timer" lol

jadelade, on 22 May 2012 - 09:10 PM said:

thanks it helped PS Mystic you did not close of your string on line 6 "timer" lol

:P/>/> that's what happens when you write the code in the forum and don't test it.

lol