dxdraw problem

[yoya99]

hello there i have this codto draw an image near the head of a player wich is ina dmin acl but i get an error....

The Error is:Error:class/client.lua:2 : attempt to perform arithmetic on global "nameWidth" (a nil value)

Can someone help me pls?? here is the client.lua:

function showImage() 
dxDrawImage( sx + math.max(nameWidth/2, teamWidth/2) + 0*scale, sy - imageSize, imageSize, imageSize, "player.png" )  
end 
addEventHandler("onClientResourceStart", resourceRoot, function() addEventHandler("onClientRender", root, showImage) end) 
  

Edited October 13, 2014 by Guest

[Mr_Moose]

nameWidth is not defined, you need to assign a value to it otherwise it's nil.

[yoya99]

how can i define it? To draw it i have added it in the nametags.lua too..how to solve this problem?

Edited October 13, 2014 by Guest

[Mr_Moose]

nameWidth = 1 

for instance.

[yoya99]

thats all?? where to add that?

[Mr_Moose]

Before it's being used, above line 2 for example.

[yoya99]

I try it out now one moment;)

[yoya99]

the same error message with 'sx' now...do i add it too?

[yoya99]

ok i fixed the errors now but i dont see any image...i tried to logout so i am in acl group everyone and then i dont see my image ((( helpppp

[Mr_Moose]

nil is always nil, all variables that doesn't point on anything will return nil when trying to access them, to make a long story short, Yes.

Depending on what you're trying to do it may be simpler using constant values rather than inserting lot's of pointers to nil and then trying to figure out what's wrong.

What values are you using?

[yoya99]

i use that both codes here:

server side:

function setDataOnLogin() 
    if not isGuestAccount(getPlayerAccount(source)) and isObjectInACLGroup("user."..getAccountName(source), aclGetGroup("Everyone")) then 
        setElementData(source, "showimg", true) 
    end 
end 
addEventHandler("onPlayerLogin", root, setDataOnLogin) 
  
function setDataOnResourceStart() 
    for i, v in ipairs(getElementsByType("player")) do 
        if not isGuestAccount(getPlayerAccount(v)) and isObjectInACLGroup("user."..getAccountName(v), aclGetGroup("Everyone")) then 
            setElementData(v, "showimg", true) 
        end 
    end 
end 

client side:

nameWidth = 1 
teamWidth = 1 
sx = 1 
scale = 1 
imageSize = 2 
function showImage() 
dxDrawImage( sx + math.max(nameWidth/2, teamWidth/2) + 0*scale, sy - imageSize, imageSize, imageSize, "classicon_player.png" ) 
end 
addEventHandler("onClientResourceStart", resourceRoot, function() addEventHandler("onClientRender", root, showImage) end) 
  

[Mr_Moose]

Your image is showing but it's only 2 pixels in size so you can't see it, don't make it more complicated than it has to be:

local sx,sy = guiGetScreenSize() 
function showImage() 
    dxDrawImage((sx-800)/2, (sy-600)/2, 800, 600, "player.png" )  
end 
addEventHandler("onClientRender", root, showImage) 

Edited October 13, 2014 by Guest

[Anubhav]

Its guiGetScreenSize not guiGetScreensize

  
local sx,sy = guiGetScreenSize() 
function showImage() 
    dxDrawImage((sx-800)/2, (sy-600)/2, 800, 600, "player.png" ) 
end 
addEventHandler("onClientRender", root, showImage) 
  

[yoya99]

Ok i will try out right now

[yoya99]

another problem...i am not admin but it draws the image for Admin help pls

[Mr_Moose]

local sx,sy = guiGetScreenSize() 
function showImage() 
    if getElementData(localPlayer, "showimg") then 
        dxDrawImage((sx-800)/2, (sy-600)/2, 800, 600, "player.png" )  
    end 
end 
addEventHandler("onClientRender", root, showImage) 

Now which one is it? Just modify the if statement to toggle admin or non admin.

[yoya99]

like that or ??

local sx,sy = guiGetScreenSize() 
function showImage() 
    if  isObjectInACLGroup("user."..getAccountName(source), aclGetGroup("Admin"))(localPlayer, "showimg") then 
        dxDrawImage((sx-800)/2, (sy-600)/2, 800, 600, "player.png" ) 
    end 
end 
addEventHandler("onClientRender", root, showImage) 

And second how can i make it shown at the right sy sx for different resolutions??

[Mr_Moose]

local sx,sy = guiGetScreenSize() 
function showImage() 
    if getElementData(localPlayer, "showimg") then 
        dxDrawImage((sx-800), (sy-600), 800, 600, "player.png" )  
    end 
end 
addEventHandler("onClientRender", root, showImage) 

That's all you need, do not use server functions client side and vice versa, you had the server side part which set's the element data making it accessible to the clients. The if statement holds this: "getElementData(localPlayer, "showimg")" which will be true or false depending on if you're staff or not.

[yoya99]

so what i have to add that it only shows the image admins?

[Banex]

like that or ??

local sx,sy = guiGetScreenSize() 
function showImage() 
    if  isObjectInACLGroup("user."..getAccountName(source), aclGetGroup("Admin"))(localPlayer, "showimg") then 
        dxDrawImage((sx-800)/2, (sy-600)/2, 800, 600, "player.png" ) 
    end 
end 
addEventHandler("onClientRender", root, showImage) 

And second how can i make it shown at the right sy sx for different resolutions??

You need to get the player's account on the server side

To answer your other question:

local sx,sy = guiGetScreenSize() 
local px,py = 1600,900 
local x,y =  (sx/px), (sy/py) 
dxDrawImage(x*800, y*600, x*800,y*600, "player.png" )  

[yoya99]

so what i have to add that it only shows the image admins?

[Banex]

so what i have to add that it only shows the image admins?

Use the last code of MrBrutus, and the server-side script you posted here before

[yoya99]

now i dont see any image...its like my old problem was .... i guess the last codes were ok but it drawed me an image even if i werent admin

[Banex]

Try this:

Server side

local account = getPlayerAccount(thePlayer) 
local accountName = getAccountName(account) 
  
function setDataOnLogin(thePlayer) 
        if ( isObjectInACLGroup ( "user.".. accountName, aclGetGroup ( "Admin" ) ) ) then 
            setElementData(thePlayer,"showimg",true) 
        end 
end 
addEventHandler ( "onPlayerLogin", root, setDataOnLogin ) 

Client side

local sx,sy = guiGetScreenSize() 
local px,py = 1600,900 
local x,y =  (sx/px), (sy/py) 
  
function showImage() 
    if getElementData(localPlayer, "showimg") then 
        dxDrawImage(x*800, y*600, x*800, y*600, "player.png" ) 
    end 
end 
addEventHandler("onClientRender", root, showImage) 

[yoya99]

thx guys its fixed.... pls see my other question here : viewtopic.php?f=91&t=81481

itswith dxdraw