Drawing a temporary fading red rectangle

[Andriko1]

I want to draw a red rectangle on the player's screen that slowly fades away completely after 2 seconds, I'm not sure how to do the fading away stuff, with CurTime()? Timers? plz help =S

[Contron]

I suppose you could do something like this (untested)

[lua]
local time
local alpha

function DoRectangle()

//set time
time = (CurTime() + 2)
alpha = 255

end

function RectanglePaint()

//bailout
if (alpha == 0) then return end
if (CurTime() > time) then
//reduce alpha
alpha = (alpha - 1)
end

//draw rect
surface.SetDrawColor(255, 0, 0, alpha)
surface.DrawRect(0, 0, ScrW(), ScrH())

end

hook.Add("HUDPaint", "DoRedRectangle", RectanglePaint)
[/lua]

[zyke34]

google is your friend

[QUOTE=jrj996;30817532]
[lua]
--init.lua
function GM:PlayerInitialSpawn(player)
umsg.Start("FadeToStart",player)
umsg.End()
end
--cl_init.lua
local intro = false
local alpha = 255
usermessage.Hook("FadeToStart",function()
intro = true
end)

timer.Create("EndFade",0.1,0,function()
if intro && alpha > 0 then
alpha = alpha - 1
end
if alpha < 1 then
timer.Destroy("EndFade")
end
end)

function FadeEffect()
draw.RoundedBoxEx(1,0,0,ScrW(),ScrH(),Color(0,0,0,alpha))
end
hook.Add("HUDPaint","FadeEffect",FadeEffect)
[/lua]
Untested but it should work, hopefully.
[/QUOTE]

[Andriko1]

I googled already...