local randomChannel = Channel.random(61616, -1.4, 1.4)
local material = {"fastdarken", "fastmultiply", "fastdarken"}
local function glitchline(timing)
    local duration = math.random(100, 500)
    local s = Scene.createSprite("glitchline.png", material[math.random(#material)], "notes")
    s.setParent(Scene.screenCanvas)
    s.scaleX = 100*2048*5
    s.scaleY = math.random(50, 300)
    s.layer = "Topmost"
    s.sort = 9999999
    s.colorR = Channel.random(math.random(1, 10000), 0, 255)
    s.colorG = Channel.random(math.random(1, 10000), 0, 255)
    s.colorB = Channel.random(math.random(1, 10000), 0, 255)
    s.active = Channel.keyframe().setDefaultEasing("cnsti").addKey(0, 0)
    .addKey(timing, 1).addKey(timing + duration, 0)
    local transY = Channel.keyframe().setDefaultEasing("inconst").addKey(timing, 0).addKey(timing + duration, 999999)
    s.translationY = randomChannel.valueAt(timing) * 480 + transY
end

addScenecontrol("glitchline", {"duration", "density"}, function(cmd)
local timing = cmd.timing
local duration2 = cmd.args[1]
local density = cmd.args[2]
  if duration2 == 0 then
      glitchline(timing)
  else
    for i = timing, timing + duration2, 100/density do
        glitchline(i)
    end
  end

end)