Rendering unsuccessful

[DRW]

Hello, I'm modifying a 3D hud, it works, but only for some people, the problem is that I want to check if the rendering was unsuccessful, I mean, if it's not visible to players then cancel that and make the real hud be visible.

--// 
--|| Created by KryPtoHolYx 
--|| for More free Scripts visit kryptoholyx.com 
--|| Thanks for Downloading 
--\\ 
  
local white = tocolor(255,255,255,255) 
function dxDrawImage3D(x,y,z,w,h,m,c,r) 
        local lx, ly, lz = x+w, y+h, (z+tonumber(r or 0)) or z 
    return dxDrawMaterialLine3D(x,y,z, lx, ly, lz, m, h, c or white) 
end 
  
offsetboneZP = 52 --// valid are all bones 
offsetdistZP1 = 0.66 
offsetdistZP2 = 0.30 
rotoffsetZP1 = 215 
rotoffsetZP2 = -90 
zoffsetZP = -0.09 
--// Settings 
C_Disable_GTA_HUD = false 
C_Creator_ScreenWidth = 1440 
C_Creator_ScreenHeight = 900 
s = {guiGetScreenSize()} 
--AMMO 
offsetboneAmmo = 23 --// valid are "muzzle" and all bones 
offsetdistAmmo1 = 0.15 
offsetdistAmmo2 = 0.1 
rotoffsetAmmo1 = 0 
rotoffsetAmmo2 = -90 
zoffsetAmmo = 0.1 
--HEALTH 
offsetboneHealth = 32 --// valid are all bones 
offsetdistHealth1 = 0.1 
offsetdistHealth2 = 0.1 
rotoffsetHealth1 = 150 
rotoffsetHealth2 = -90 
zoffsetHealth = 0.1 
--MONEY 
offsetboneMoney = 41 --// valid are all bones 
offsetdistMoney1 = 0.50 
offsetdistMoney2 = 0.25 
rotoffsetMoney1 = 230 
rotoffsetMoney2 = -90 
zoffsetMoney = -0.2 
debug = false 
drawboxes = false 
drawammo = true 
drawhp = true 
drawmoney = true 
drawzp = true 
--\\ 
local function dxDrawTextBordered(text,x,y,tx,ty, color, size, font,right,top, clip, wordBreak, postGUI,colorCoded, subPixelPositioning) 
dxDrawText(text,x-1,y,tx-1,ty, tocolor(0, 0, 0, 255), size, font,right,top, clip, wordBreak, postGUI,colorCoded, subPixelPositioning) 
dxDrawText(text,x,y-1,tx,ty-1, tocolor(0, 0, 0, 255), size, font,right,top, clip, wordBreak, postGUI,colorCoded, subPixelPositioning) 
dxDrawText(text,x+1,y,tx+1,ty, tocolor(0, 0, 0, 255), size, font,right,top, clip, wordBreak, postGUI,colorCoded, subPixelPositioning) 
dxDrawText(text,x,y+1,tx,ty+1, tocolor(0, 0, 0, 255), size, font,right,top, clip, wordBreak, postGUI,colorCoded, subPixelPositioningpo) 
dxDrawText(text,x,y,tx,ty, color, size, font,right,top) 
end 
  
showPlayerHudComponent ( "all",false ) 
showPlayerHudComponent ( "radar", true) 
showPlayerHudComponent ( "crosshair", true ) 
showPlayerHudComponent ( "vehicle_name", false ) 
  
        function findrotation (x,y,rz,dist,rot) 
            local x = x+dist*math.cos(math.rad(rz+rot)) 
            local y = y+dist*math.sin(math.rad(rz+rot)) 
            return x,y 
        end 
  
         
--// Making the dxdraws fit on all Resolutions ! 
_dxDrawRectangle = dxDrawRectangle 
_dxDrawText = dxDrawText 
function dxDrawRectangle(x,y,w,h,...) 
    local x = s[1]*(x)/C_Creator_ScreenWidth 
    local y = s[2]*(y)/C_Creator_ScreenHeight 
    local w = s[1]*(w)/C_Creator_ScreenWidth 
    local h = s[2]*(h)/C_Creator_ScreenHeight 
    return _dxDrawRectangle(x,y,w,h,...) 
end 
function dxDrawText(text,x,y,w,h,...) 
    local x = s[1]*(x)/C_Creator_ScreenWidth 
    local y = s[2]*(y)/C_Creator_ScreenHeight 
    local w = s[1]*(w)/C_Creator_ScreenWidth 
    local h = s[2]*(h)/C_Creator_ScreenHeight 
    return _dxDrawText(text,x,y,w,h,...) 
end 
--\\ 
--// Syncing the Fucking money  
setTimer(function () 
setElementData(localPlayer,"money",getPlayerMoney()) 
  
end,1000,0) 
  
--\\ 
         
magazines = { 
        [22]=17, 
        [23]=17, 
        [24]=7, 
        [25]=1, 
        [26]=2, 
        [27]=7, 
        [28]=50, 
        [29]=30, 
        [30]=30, 
        [31]=50, 
        [32]=50, 
        [33]=1, 
        [34]=1, 
        [35]=1, 
        [36]=1, 
        [37]=50, 
        [38]=500, 
        [41]=500, 
        [42]=500, 
        [43]=36, 
} 
  
--// Createds rTargets 
local rTarget = {} 
rTarget[localPlayer] = {} 
  
rTarget[localPlayer]["ammo"] = dxCreateRenderTarget(s[1]*(400)/C_Creator_ScreenWidth, s[2]*(400)/C_Creator_ScreenHeight,true) 
rTarget[localPlayer]["health"] = dxCreateRenderTarget(s[1]*(400)/C_Creator_ScreenWidth, s[2]*(400)/C_Creator_ScreenHeight,true) 
rTarget[localPlayer]["Money"] = dxCreateRenderTarget(s[1]*(400)/C_Creator_ScreenWidth, s[2]*(400)/C_Creator_ScreenHeight,true) 
rTarget[localPlayer]["ZP"] = dxCreateRenderTarget(s[1]*(400)/C_Creator_ScreenWidth, s[2]*(400)/C_Creator_ScreenHeight,true) 
addEventHandler ("onClientResourceStart",getResourceRootElement(getThisResource()),function() 
if not rTarget then 
showPlayerHudComponent ( "all",true ) 
  
  
end 
end) 
addEventHandler("onClientRender",getRootElement(), 
    function () 
if isPlayerInVehicle(localPlayer) then 
return end 
  
    for index,player in ipairs(getElementsByType("player")) do 
            if not isElementStreamedIn (player) then return end 
            if getElementDimension(player) ~= getElementDimension(localPlayer) then return end 
            if getElementInterior(player) ~= getElementInterior(localPlayer) then return end 
             
             
    if not rTarget[player] then 
        rTarget[player] = {} 
            rTarget[player]["ammo"] = dxCreateRenderTarget(s[1]*(400)/C_Creator_ScreenWidth,s[2]*(400)/C_Creator_ScreenHeight,true) 
            rTarget[player]["health"] = dxCreateRenderTarget(s[1]*(400)/C_Creator_ScreenWidth, s[2]*(400)/C_Creator_ScreenHeight,true) 
            rTarget[player]["Money"] = dxCreateRenderTarget(s[1]*(400)/C_Creator_ScreenWidth, s[2]*(400)/C_Creator_ScreenHeight,true) 
            rTarget[player]["ZP"] = dxCreateRenderTarget(s[1]*(400)/C_Creator_ScreenWidth, s[2]*(400)/C_Creator_ScreenHeight,true) 
             
    end 
     
     
    -- // Total Ammo and Ammo for rTarget["ammo"] 
    ammo = getPedAmmoInClip(player) 
    atammo = getPedTotalAmmo(player) 
        if magazines[getPedWeapon(player)] then 
            tammo = math.floor((atammo-ammo)/magazines[getPedWeapon(player)]) 
            -- // Updates the rTarget Ammo with the Informations from above 
            dxSetRenderTarget ( rTarget[player]["ammo"],true ) 
            if drawboxes then 
            --// Draws the Borders around the Ammo  
            local bbox = 0 
            for i=0,75,2 do 
            bbox = bbox +1 
            if bbox == 1    then 
                 
  
            else 
                bbox = 0 
            end 
            end          
             
  
            --\\ 
            end 
                dxDrawTextBordered (   ammo,200,170,200,170,tocolor(255,255,255,150),1.9,"pricedown","center", "center") 
                dxDrawTextBordered (   atammo-ammo, 200,200,200,200,tocolor(255,255,255,150),1,"pricedown","center", "center") 
                dxDrawTextBordered (   getWeaponNameFromID(getPedWeapon(localPlayer)), 200,240,200,200,tocolor(200,200,200,200),1,"pricedown","center", "center") 
            dxSetRenderTarget () 
        end 
         
        dxSetRenderTarget (rTarget[player]["health"],true ) 
                    if drawboxes then 
            --// Draws the Borders around the Ammo  
            local bbox = 0 
            for i=0,75,2 do 
            bbox = bbox +1 
            if bbox == 1    then 
                 
                dxDrawRectangle(150,(133+i),100,2,tocolor(0,0,0,150)) 
            else 
                bbox = 0 
            end 
            end          
             
             
            --\\ 
            end 
         
            dxDrawTextBordered (math.floor(getElementHealth(player)), 200,160,200,160,tocolor(200,0,0,255),2,"pricedown","center", "center") 
            dxDrawTextBordered (math.floor(getPedArmor(player)), 200,190,200,190,tocolor(150,150,150,255),1.5,"pricedown","center", "center") 
        dxSetRenderTarget () 
  
        dxSetRenderTarget ( rTarget[player]["Money"],true ) 
            dxDrawTextBordered ("$"..math.floor(getElementData(player,"money")), 115,160,200,160,tocolor(0,200,0,255),2,"pricedown","left", "center") 
            dxDrawTextBordered ("EXP: "..getElementData(player,"Zombie kills"), 115,250,200,160,tocolor(255,255,255,255),2,"pricedown","left", "center") 
            dxDrawTextBordered ("lVL"..getElementData(player,"levelnum"), 115,360,200,160,tocolor(255,255,255,255),3,"pricedown","left", "center") 
  
        dxSetRenderTarget ()     
                dxSetRenderTarget ( rTarget[player]["ZP"],true ) 
                dxDrawTextBordered ("ZP: "..math.floor(getElementData(player,"moneycoins")), 200,160,200,160,tocolor(0,252,254,255),2,"pricedown","left", "center") 
                 
  
        dxSetRenderTarget ()     
  
        --// Finds Positions for the rTarget Ammo 
            if offsetboneAmmo ~= "muzzle" then 
                sx,sy,z = getPedBonePosition(player,offsetboneAmmo) 
            else 
                sx,sy,z = getPedWeaponMuzzlePosition(player) 
            end 
             
            local rz = getPedRotation(player) 
            x1,y1 = findrotation (sx,sy,rz,offsetdistAmmo1,rotoffsetAmmo1) 
            x,y = findrotation (x1,y1,rz,offsetdistAmmo2,rotoffsetAmmo2) 
        --// Draws Ammo rTarget 
            if drawammo then 
                if magazines[getPedWeapon(player)] then 
                    dxDrawMaterialLine3D ( x1,y1,z+zoffsetAmmo+0.5,x1,y1,z+zoffsetAmmo-0.5,rTarget[player]["ammo"], 1, tocolor(255,255,255,255),x,y,z) 
                end 
            end 
    --// for Testing  
        if debug then 
            dxDrawLine3D(sx,sy,z,x1,y1,z+zoffsetAmmo) 
            dxDrawLine3D(x1,y1,z+zoffsetAmmo,x,y,z+zoffsetAmmo) 
        end 
         
        --// Finds Positions for the rTarget Health 
            local sx,sy,z = getPedBonePosition(player,offsetboneHealth) 
            local rz = getPedRotation(player) 
            x1,y1 = findrotation (sx,sy,rz,offsetdistHealth1,rotoffsetHealth1) 
            x,y = findrotation (x1,y1,rz,offsetdistHealth2,rotoffsetHealth2) 
                --// Draws health rTarget 
                if drawhp then 
                    dxDrawMaterialLine3D ( x1,y1,z+zoffsetHealth+0.5,x1,y1,z+zoffsetHealth-0.5,rTarget[player]["health"], 1, tocolor(255,255,255,255),x,y,z) 
                end 
            --// for Testing