Opening a menu on Death - Error.

[Leah]

Hey,

I'm trying to create a menu that appears once someone dies. However I'm getting this error:

[ERROR] addons/addonname/lua/autorun/sh_screen.lua:9: attempt to call field 'AddNetworkString' (a nil value)
  1. unknown - addons/addonname/lua/autorun/sh_screen.lua:9

Here's my code:
util.AddNetworkString("OpenScreen")

function FirstJoin(ply)
    net.Start("OpenScreen")
    net.Send(ply)
end
hook.Add("PlayerSpawn", "uniquename", FirstJoin)

if CLIENT then
net.Receive("OpenScreen", function()
  local DermaPanel = vgui.Create( "DFrame" )
DermaPanel:SetPos( 0,0 )
DermaPanel:SetSize( 500, 400 )
DermaPanel:SetTitle( "Death Screen" )
DermaPanel:SetVisible( true )
DermaPanel:ShowCloseButton( true )
DermaPanel:MakePopup()
DermaPanel:Center()
end)
end

Sorry if this is an easy fix but I can't seem to find the error. The file name = "sh_screen.lua".

Thanks

[Trackster]

where is the code running? client or server?

[Leah]

It's running locally on "Start New Game", i've tried it on "Single Player" and with a multiple player option.

Sorry if thats not what you were asking.

[Invule]

either wrap it all inside of a if (SERVER) then ... else ... end or have two different files, one for client and one for server.

[Leah]

Thank You! Can't believe it was that easy.

[Trackster]

thats why i asked if clientside or serverside. you were executing AddNetworkString on the client AND server. the client cant do anything with that

[Leah]

Makes sense. I thought shared would handle it, but obviously I still havent got the grasp of the different types yet. Thanks anyway

[Trackster]

Shared runs the code on both sides. Which is fine if you seperate the serverside and clientside part with if statements (if SERVER / if CLIENT) but if its out of a if statement, it will run on both sides. Which again, works with shared functions. But not client or server side only