Please help me produce this code with me.

[qaisjp]

Fades an element (supports only vehicles, peds and gui's)

  
local debug = { 
    e = function(s) outputDebugString(s, 2) end, 
    i = outputDebugString, 
    w = function(s) outputDebugString(s, 1) end 
} 
local DIFFERENCE = 0.5 
local supportedElements = { 
    ["vehicle"] = true, 
    ["ped"]      = true 
} 
  
function fadeElement(ele, way) -- way true for in, false for out 
    local allow = false 
    local gui   = false 
    local alphG = false 
    local alphS = false 
    if supportedElements[getElementType(ele)] then 
        allow = true 
        alphG  = getElementAlpha 
        alphS  = setElementAlpha 
    elseif string.find(getElementType(ele), "gui") then 
        allow = true 
        alphG = guiGetAlpha 
        alphS = guiSetAlpha 
    end 
    if not allow then 
        debug.w("Invalid argument(1, 'element') @ fadeElement. Specified element is not allowed") 
    else 
        if way then 
            while alphaG(ele) < 255 then 
                alphaS(ele,alphaG(ele)+DIFFERENCE) 
            end 
        elseif not way then 
            while alphaG(ele) > 0 then 
               alphaS(ele, alphaG(ele)-DIFFERENCE) 
            end 
        end 
    end 
end 

Please help create this code, fix bugs and make it better for the community to use!

-- Arran gave tip for the guiSetAlpha/guiGetAlpha thingymajig.

[Arran]

This is something I made to fade windows in 1 of my scripts, might help you:

Note that its not time based so for people with low FPS it takes ages for the GUI to load (bad) it should be time based and if you wanted to fade out one you do fadingGUI[window] = true and to fade in: fadingInGUI[window] = true

  
local GLP = getLocalPlayer() 
fadingGUI = {} 
fadingInGUI = {} 
  
function fadeGUI() 
    for ent, ind in pairs(fadingGUI) do 
        local newalpha = guiGetAlpha(ent) - 0.025 
        if (newalpha <= 0) then 
            guiSetAlpha(ent, 0) 
            guiSetVisible(ent, false) 
            fadingGUI[ent] = nil 
        else 
            guiSetAlpha(ent, newalpha) 
        end 
        if (fadingInGUI[ent]) then 
            fadingInGUI[ent] = nil 
        end 
    end 
    for ent, ind in pairs(fadingInGUI) do 
        guiSetVisible(ent, true) 
        guiBringToFront(ent, true) 
        local newalpha = guiGetAlpha(ent) + 0.025 
        if (newalpha >= 0.95) then 
            guiSetAlpha(ent, 0.95) 
            fadingInGUI[ent] = nil 
        else 
            guiSetAlpha(ent, newalpha) 
        end 
    end 
end 
addEventHandler("onClientRender", root, fadeGUI) 
  

[Castillo]

You have many typos in your script, like using 'then' when it should be 'do', also calling a variable alphaG but your variable was alphG.

function fadeElement(ele, way) -- way true for in, false for out 
    local allow = false 
    local gui   = false 
    local alphaG = false 
    local alphaS = false 
    if supportedElements[getElementType(ele)] then 
        allow = true 
        alphaG  = getElementAlpha 
        alphaS  = setElementAlpha 
    elseif string.find(getElementType(ele), "gui") then 
        allow = true 
        alphaG = guiGetAlpha 
        alphaS = guiSetAlpha 
    end 
    if not allow then 
        debug.w("Invalid argument(1, 'element') @ fadeElement. Specified element is not allowed") 
    else 
        if way then 
            while alphaG(ele) < 255 do 
                alphaS(ele,alphaG(ele)+DIFFERENCE) 
            end 
        elseif not way then 
            while alphaG(ele) > 0 do 
               alphaS(ele, alphaG(ele)-DIFFERENCE) 
            end 
        end 
    end 
end 

P.S: This script will do a infinite running script.

Edit: Using repeat until won't make a infinite running script.

function fadeElement(ele, way) -- way true for in, false for out 
    local allow = false 
    local gui   = false 
    local alphaG = false 
    local alphaS = false 
    if supportedElements[getElementType(ele)] then 
        allow = true 
        alphaG  = getElementAlpha 
        alphaS  = setElementAlpha 
    elseif string.find(getElementType(ele), "gui") then 
        allow = true 
        alphaG = guiGetAlpha 
        alphaS = guiSetAlpha 
    end 
    if not allow then 
        debug.w("Invalid argument(1, 'element') @ fadeElement. Specified element is not allowed") 
    else 
        if way then 
            repeat 
                alphaS(ele,alphaG(ele)+DIFFERENCE) 
            until alphaG(ele) < 255 
        elseif not way then 
            repeat 
               alphaS(ele, alphaG(ele)-DIFFERENCE) 
            until alphaG(ele) > 0 do 
            end 
        end 
    end 
end 

But, I don't understand why it doesn't set the alpha, it set's once then again to 1.