Calling back a function is not working

[Dzsozi (h03)]

Hello everybody, today I made a countdown script and I tried to add an export function, but it's not working for some reason. I think I've done everything well, but here's my code:

meta:

client:

local sx, sy = guiGetScreenSize () 
function startCountDown ( source ) 
    guiSetVisible ( imagecount, false ) 
    imagecount = guiCreateStaticImage ( (670 / 1600) * sx, (140 / 1300) * sy, (250 / 1600) * sx, (220 / 1300) * sy,"images/3.png",false) 
    setTimer ( Countdown2, 1300, 1 ) 
    local sound = playSound("tick.mp3", false) 
end 
function Countdown2 ( source ) 
    guiSetVisible ( imagecount, false ) 
    imagecount = guiCreateStaticImage( (670 / 1600) * sx, (140 / 1300) * sy, (250 / 1600) * sx, (220 / 1300) * sy,"images/2.png",false) 
    setTimer ( Countdown1, 1300, 1 ) 
    local sound = playSound("tick.mp3", false) 
end 
function Countdown1 ( source ) 
    guiSetVisible ( imagecount, false ) 
    imagecount = guiCreateStaticImage( (670 / 1600) * sx, (140 / 1300) * sy, (250 / 1600) * sx, (220 / 1300) * sy,"images/1.png",false) 
    setTimer ( Countdown0, 1300, 1 ) 
    local sound = playSound("tick.mp3", false) 
end 
function Countdown0 ( source ) 
    guiSetVisible ( imagecount, false ) 
    imagecount = guiCreateStaticImage( (670 / 1600) * sx, (140 / 1300) * sy, (250 / 1600) * sx, (220 / 1300) * sy,"images/go.png",false) 
    setTimer ( CountdownEnd, 3000, 1 ) 
    local sound = playSound("go.mp3", false) 
end 
function CountdownEnd ( source ) 
    guiSetVisible ( imagecount, false ) 
end 
addCommandHandler ( "cd", startCountDown ) 
addEvent("startCountDown", true) 
addEventHandler("startCountDown", startCountDown) 

server:

function startCountDown(player) 
    if isElement(player) then 
        triggerClientEvent(player, "startCountDown", getRootElement()) 
    end 
end 

the way I tried to call it in server side script:

exports.countdown:startCountDown(source) 

What's the problem with my codes?

[pa3ck]

Well, I know if you don't define the type ( client, server ) at the script, it's gonna be server by default, but I don't know if it works like that with an export function. Try to put type="server" and see if it works. Also, I'd put an 'else' statement after the 'isElement' just to make things easier and see if the passed argument is an element or not.

[arezu]

Debug your code using outputDebugString.

Put one in server side startCountDown outside the if statement and one inside, and then put another one in client side startCountDown.

My guess is that 'source' that you call the function with is not an element.

[Dzsozi (h03)]

Still not working. And debugscript shows nothing about this.

[Vinctus]

make the type as "server" on first one, try after that

<meta> 
    <script src="countdownC.lua" type="client" /> 
    <script src="countdownS.lua" type="server" /> 
    <file src="images/1.png" /> 
    <file src="images/2.png" /> 
    <file src="images/3.png" /> 
    <file src="images/go.png" /> 
    <file src="go.mp3" /> 
    <file src="tick.mp3" /> 
    
    <export function="startCountDown" type="server" /> 
    <export function="startCountDown" type="client" /> 
</meta> 

what is the clientside for anyway?

[Dzsozi (h03)]

make the type as "server" on first one, try after that

<meta> 
    <script src="countdownC.lua" type="client" /> 
    <script src="countdownS.lua" type="server" /> 
    <file src="images/1.png" /> 
    <file src="images/2.png" /> 
    <file src="images/3.png" /> 
    <file src="images/go.png" /> 
    <file src="go.mp3" /> 
    <file src="tick.mp3" /> 
    
    <export function="startCountDown" type="server" /> 
    <export function="startCountDown" type="client" /> 
</meta> 

what is the clientside for anyway?

I've already wrote it there. But it's working on client side, tested it with a command, but in server side it's not working.

[pa3ck]

function startCountDown(player) 
    if isElement(player) then 
        triggerClientEvent(player, "startCountDown", player) 
    else 
        outputDebugString ( "Bad element pointer @ startCountDown", 0 ) 
    end 
end 

[Dzsozi (h03)]

Yes, now when I write the command which is in server side now it writes this: countdown/countdownS.lua:5: Bad element pointer @ startCountDown

[pa3ck]

So 'source' isn't defined.

[arezu]

You should learn how to debug your scripts and check the documentation better; there are tutorials on how to debug at this forum.

Also, https://wiki.multitheftauto.com/wiki/AddCommandHandler

Command handlers do not have a source, only events do, and also these are the parameters:

player playerSource, string commandName, [string arg1, string arg2, ...]

Check the example on wiki.