Question about events

[jyrno42]

How can i pause the clientside script until the serverside event has been finished?

Lets say i have a client side code which needs to check some thing serverside before continuing its work.

local thePlayer = getLocalPlayer( )
 
triggerServerEvent( "SampleEvent", getRootElement( ), thePlayer )
outputChatBox( "Event complete", thePlayer )
-- continue work

And Serverside

function SampleFunction( thePlayer )
 
outputChatBox( "Doing Sample Function", thePlayer )
-- do something useful
return 1
 
end
 
addEvent( "SampleEvent", true )
addEventHandler( "SampleEvent", getRootElement( ), SampleFunction )

I've managed to do this one way put its "bad-coding" IMO.

Client:

local thePlayer = getLocalPlayer( )
 
triggerServerEvent( "SampleEvent", getRootElement( ), thePlayer )
 
while true do
 
if getElementData( getLocalPlayer( ), "sampleEventDone" ) == "true" then break end 
 
end
 
outputChatBox( "Event complete", thePlayer )
-- continue work

Server:

function SampleFunction( thePlayer )
 
outputChatBox( "Doing Sample Function", thePlayer )
-- do something useful
setElementData( thePlayer, "sampleEventDone", "true", true )
return 1
 
end
 
addEvent( "SampleEvent", true )
addEventHandler( "SampleEvent", getRootElement( ), SampleFunction )

Any better solutions?

[Mr.Hankey]

A better way would be to just add another event clientside that the server triggers when 'SampleFunction' is done.

Client:

triggerServerEvent("SampleEvent", getLocalPlayer())
 
function callComplete ()
--continue
end
 
addEvent( "SampleFunctionDone", true )
addEventHandler( "SampleFunctionDone", getRootElement(), callComplete)

Server:

function SampleFunction( )
outputChatBox( "Doing Sample Function", source )
-- do something useful
triggerClientEvent( source, "SampleFunctionDone", source)
end
 
addEvent( "SampleEvent", true )
addEventHandler( "SampleEvent", getRootElement( ), SampleFunction )

[jyrno42]

Thanks for your help. I wonder why i didnt think about that before.

[eAi]

You should never loop like that in scripts - it won't work. Scripts are run in the same thread as the rest of the game logic, so nothing will happen (your event packet won't get sent and you won't get any element data returned). MTA will prevent you doing this too, by noticing that your script has been running for too long and terminating it.