[thatrickguy]

Trying to make the background of my frame pulsing red, but it takes a couple of big steps from black to bright red, but then never comes back down to black. I can see the value of r climb from 0 to 1 and back down to 0, but the frame color never changes after it hits red. Thoughts?

local seconds = 0.5
local total = 0

local r = 0
local rud = 0.2

SPHowFrame:SetScript("OnUpdate", function(self, elapsed)
	total = total + elapsed
	if total > seconds then
      local r = getRedColor()
      print (r)
      self.texture = nil
      self.texture = self:CreateTexture(nil,"BACKGROUND")
      self.texture:SetColorTexture(r, 0, 0)
      self.texture:SetAllPoints(self)
      self.texture = t
      total = 0
	end
end)


function getRedColor()
   r = r + rud
   if r > 1 then
      rud = rud * -1
      r=1
   end 
   if r < 0 then 
      rud = rud * -1
      r=0
   end 
   
   return r
end