Having troubles with Coroutines

[zckbest2 (HelloWorld)]

Hello. I’ve been trying to learn coroutine but I’ve seem to be in a pickle. I have the following code as an example.

local StartTimer = coroutine.wrap(function()
	for i = 1,10,1 do
		wait(1)
		print("Starting in "..10-i)
	end
	
	print('Start!')
	
	coroutine.yield()
end)

while true do wait(20)
	StartTimer()
	
	print('Started Timer')
end

When I do StartTimer() twice, it doesn’t seem to fire on the second time for some reason. Could someone help please? I don’t know if I’m just being dumb.

[amandasillv]

I can't understand what's coroutine.yield()

coroutine.yield stops your coroutine until an outside force starts it again. local coro = coroutine.create(function() print('wow I started') coroutine.yield() -- stops print('wow I resumed') end) coroutine.resume(coro) -- does first print, yields, returns here coroutine.resume(coro) -- does second print before `coro` dies Any arguments you pass to coroutine.resume are returned by coroutine.yield, and any arguments passed coroutine.yield are returned by coroutine.resume.

[Sniperkaos (Swag Messiah)]

you already made the coroutine now that it’s yielded you need to call coroutine.resume(coroutine) otherwise it won’t do anything

[zckbest2 (HelloWorld)]

Oh thanks, sorry I didn’t know yield was the problem.

Does this work efficiently?

local StartTimer = coroutine.create(function()
	while true do
		for i = 1,10,1 do
			wait(1)
			print("Starting in "..10-i)
		end

		print('Start!')

		coroutine.yield()
	end
end)

while true do wait(20)
	coroutine.resume(StartTimer)

	print('Started Timer')
end