LÖVE

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Intro = {}
Intro.Alpha = 0
Intro.Appeared = true

function Intro:Load()
  Logo = love.graphics.newImage("Resources/Gfx/LoveLogo.png")
  iCanvas = love.graphics.newCanvas()
  local str = love.filesystem.read("Resources/Shaders/CRT-Simple.frag")
  scanline = love.graphics.newShader(str)
  scanline:send('inputSize',{Game.Width,Game.Height})
  scanline:send('textureSize', {Game.Width, Game.Height})
end

function Intro:Update(dt)
  if self.Appeared then
    if self.Alpha < 254 then
      self.Alpha = self.Alpha + 70 * dt
    end
    if self.Alpha >= 254 then
      self.Alpha = 255
      self.Appeared = false
    end
  end
  if not self.Appeared then
    self.Alpha = self.Alpha - 120 * dt
    if self.Alpha < 1 then
      if Game:getState() == "Intro" then
        Game:setState("Menu")
      end
    end
  end
end

function Intro:Draw()
  love.graphics.setCanvas(iCanvas)
  love.graphics.setColor(255,255,255,self.Alpha)
  love.graphics.draw(Logo,Game.Width/2-Logo:getWidth()/2*0.5,Game.Height/2-Logo:getHeight()/2*0.5,0,0.5,0.5)
  love.graphics.setColor(255,255,255,255)
  love.graphics.setCanvas()
  love.graphics.setShader(scanline)
  love.graphics.draw(iCanvas)
  love.graphics.setShader()
end