triggerClientEvent

fairyoggy · March 22, 2020

How to call a variable from the server side to the client? What's my mistake?

--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka, client )
end
addEvent("rain", true)
addEventHandler( "rain", localPlayer, rain )

--server
function gap()
local kaka = "321"
triggerClientEvent(localPlayer, "rain", localPlayer, kaka)
end
addEvent( "gap", true )
addEventHandler( "gap", resourceRoot, gap )

ERROR: attemp to concatenate local "kaka" (a nil value)

The_GTA · March 22, 2020

Hello slapztea,

line 2: on the clientside, the outputChatBox function does not take an element but a color number value as second argument.
line 11: the global variable "localPlayer" does not exist on the server-side; you either could use root to send to all players or select a specific player instead using getPlayerFromName/getElementsByType/etc.

I think that your script does have a working idea behind it; you just have to improve it a little.

Edited March 22, 2020 by The_GTA

fairyoggy · March 23, 2020

9 hours ago, The_GTA said:

Здравствуйте, slapztea,

строка 2: на стороне клиента функция outputChatBox принимает не элемент, а значение номера цвета в качестве второго аргумента.

строка 11: глобальная переменная "localPlayer" не существует на стороне сервера; вы можете либо использовать root для отправки всем игрокам, либо выбрать конкретного игрока вместо этого, используя getPlayerFromName / getElementsByType / etc.

Я думаю, что у вашего сценария есть рабочая идея; вам просто нужно немного его улучшить.

I do not yet understand how to solve this. Can you tell me how to use the element I need to transfer to the client?

The_GTA · March 23, 2020

28 minutes ago, slapztea said:

I do not yet understand how to solve this. Can you tell me how to use the element I need to transfer to the client?

I like helping you by example. I cannot understand the purpose behind your script so I can only give you general advice:

Most of the time just use root as baseElement for triggerClientEvent. If the event is limited to a resource then use resourceRoot. And if you want the event to be applied to a vehicle or object across resources then use that element.

--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka, client )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )

--server
function gap()
local kaka = "321"
triggerClientEvent("rain", resourceRoot, kaka)
end
addEvent( "gap", true )
addEventHandler( "gap", resourceRoot, gap )

You probably won't understand why I removed the first argument to triggerClientEvent, but only use localPlayer if you know which player element to send the event to.

Edited March 23, 2020 by The_GTA

fairyoggy · March 23, 2020

14 minutes ago, The_GTA said:
I like helping you by example. I cannot understand the purpose behind your script so I can only give you general advice:

Most of the time just use root as baseElement for triggerClientEvent. If the event is limited to a resource then use resourceRoot. And if you want the event to be applied to a vehicle or object across resources then use that element.
--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka, client )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )
addCommandHandler("gh",rain)
--server
function gap()
local kaka = "321"
triggerClientEvent("rain", resourceRoot, kaka)
end
addEvent( "gap", true )
addEventHandler( "gap", resourceRoot, gap )
You probably won't understand why I removed the first argument to triggerClientEvent, but only use localPlayer if you know which player element to send the event to.

I tried to use it like this

--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka, client )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )
addCommandHandler("gh",rain)
--server
function gap()
local kaka = "321"
triggerClientEvent("rain", resourceRoot, kaka)
end
addEvent( "gap", true )
addEventHandler( "gap", resourceRoot, gap )

Why when do I use the command "gh" writes to chat "The client says: gh" but i need "The Client says: 321"

How to do it?

The_GTA · March 23, 2020

--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka, client )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )
addCommandHandler("gh",function(cmdName, kaka) rain(kaka) end)

fairyoggy · March 23, 2020

4 minutes ago, The_GTA said:


--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka, client )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )
addCommandHandler("gh",function(cmdName, kaka) rain(kaka) end)

So I returned to the very first error

"ERROR: attemp to concatenate local "kaka" (a nil value)"

The_GTA · March 23, 2020

Just now, slapztea said:

So I returned to the very first error

"ERROR: attemp to concatenate local "kaka" (a nil value)"

What did you do to get this error?

fairyoggy · March 23, 2020

1 minute ago, The_GTA said:

What did you do to get this error?

type "gh" in chat

The_GTA · March 23, 2020

The reason is because you have not defined the variable "kaka" for the command handler "gh". If you type "/gh 321" into the chat, then it should work.

--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )
addCommandHandler("gh",
  function(cmdName, kaka)
    if not kaka then
      outputChatBox("missing kaka argument to gh command");
      return
    end
    rain(kaka)
  end
)

Edited March 23, 2020 by The_GTA

fairyoggy · March 23, 2020

2 minutes ago, The_GTA said:

The reason is because you have not defined the variable "kaka" for the command handler "gh". If you type "/gh 321" into the chat, then it should work.


--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka, client )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )
addCommandHandler("gh",
  function(cmdName, kaka)
    if not kaka then
      outputChatBox("missing kaka argument to gh command");
      return
    end
    rain(kaka)
  end
)

If do as you say it works BUT this is not what I need.
For example, I type /gh 21421 and a chat message will appear "The client says: 21421" but i need so that the value is taken from a variable kaka from serverside. And it should turn out "The client says: 321" and nothing else, until the variable changes on the server side

The_GTA · March 23, 2020

13 minutes ago, slapztea said:

If do as you say it works BUT this is not what I need.
For example, I type /gh 21421 and a chat message will appear "The client says: 21421" but i need so that the value is taken from a variable kaka from serverside. And it should turn out "The client says: 321" and nothing else, until the variable changes on the server side

OK. Let's take your requirements into account. Is a server-side commandHandler called "gh" fine for you?

--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )

--server
function gap()
local kaka = "321"
triggerClientEvent("rain", resourceRoot, kaka)
end
addEvent( "gap", true )
addEventHandler( "gap", resourceRoot, gap )
addCommandHandler("gh", function(p, cmdName) gap() end)

Edited March 23, 2020 by The_GTA

fairyoggy · March 23, 2020

4 minutes ago, The_GTA said:

OK. Let's take your requirements into account. Is a server-side commandHandler called "gh" fine for you?


--clientfunction rain(kaka)outputChatBox ( "The client says: " .. kaka, client )endaddEvent("rain", true)addEventHandler( "rain", resourceRoot, rain )--serverfunction gap()local kaka = "321"triggerClientEvent("rain", resourceRoot, kaka)endaddEvent( "gap", true )addEventHandler( "gap", resourceRoot, gap )addCommandHandler("gh", function(p, cmdName) gap() end)

Now it works as intended, but is it possible to implement the call of this command on the client?

The_GTA · March 23, 2020

10 minutes ago, slapztea said:

Now it works as intended, but is it possible to implement the call of this command on the client?

--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )
addCommandHandler("gh", function() triggerServerEvent("gap", resourceRoot) end)

--server
function gap()
local kaka = "321"
triggerClientEvent(client, "rain", resourceRoot, kaka)
end
addEvent( "gap", true )
addEventHandler( "gap", resourceRoot, gap )

EDIT: fixed something by adding "client" global variable. Sorry I have forgotten about the existance of it for a second.
EDIT2: sorry another mistake fixed at addCommandHandler...

Edited March 23, 2020 by The_GTA

fairyoggy · March 23, 2020

2 minutes ago, The_GTA said:


--client
function rain(kaka)
outputChatBox ( "The client says: " .. kaka, client )
end
addEvent("rain", true)
addEventHandler( "rain", resourceRoot, rain )
addCommandHandler("gh", resourceRoot, function() triggerServerEvent("gap", resourceRoot) end)

--server
function gap()
local kaka = "321"
triggerClientEvent("rain", resourceRoot, kaka)
end
addEvent( "gap", true )
addEventHandler( "gap", resourceRoot, gap )

Now I don’t know what’s the matter. Nothing happens on command, writes nothing in debug

The_GTA · March 23, 2020

5 minutes ago, slapztea said:

Now I don’t know what’s the matter. Nothing happens on command, writes nothing in debug

I have fixed a mistake I made at addCommandHandler. Sorry about that. Please copy the client script again.

fairyoggy · March 23, 2020

2 minutes ago, The_GTA said:

I have fixed a mistake I made at addCommandHandler. Sorry about that. Please copy the client script again.

Now everything works as it should. You helped me a lot, thank you very much!

The_GTA · March 23, 2020

1 minute ago, slapztea said:

Now everything works as it should. You helped me a lot, thank you very much!

You're welcome.

triggerClientEvent

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