local resx, resy = game.GetResolution()
local desw, desh = 1080,1920;
local scale = 1;

local BAR_ALPHA = 191;

local FOOTER_HEIGHT = 128
local footerY = desh - FOOTER_HEIGHT;

-- Images
local bgBaseImage = gfx.CreateSkinImage("components/background/bg.png", 0);
local dotsOverlayImage = gfx.CreateSkinImage("components/background/dots.png", 0);

local valk1Image = gfx.CreateSkinImage("components/background/test.png", 0);

-- Animation related
local transitionRotateScale = 0;


function resetLayoutInformation()
    resx, resy = game.GetResolution()
    desw = 1080
    desh = 1920
    scale = resx / desw
end

local drawValkyrie = function (piProgression)
    gfx.Save()
    gfx.BeginPath()

    local distanceScaleMultiplier = (math.sin(piProgression)+math.pi)*0.25 + 0.25

    gfx.Translate(math.sin(piProgression+2)*0.6*desw+0.5*desw,-math.sin(piProgression+2)*0.1*desh+desh*0.1)
	gfx.Scale(math.sin(piProgression)*distanceScaleMultiplier, 1*distanceScaleMultiplier)
	gfx.SkewY(-math.sin(piProgression+0.5*math.pi)*0.3)

    gfx.ImageRect(0, 0, 540, 960, valk1Image, 1, 0);
    gfx.Restore()
end

local drawValkyries = function ()
    gfx.BeginPath()

    local piProgression = transitionRotateScale*2*math.pi
    drawValkyrie(piProgression)
    drawValkyrie(piProgression+math.pi*0.5)
    drawValkyrie(piProgression+math.pi*1.0)
    drawValkyrie(piProgression+math.pi*1.5)
end

local drawBackground = function ()
    gfx.BeginPath();
    gfx.ImageRect(0, 0, desw, desh, bgBaseImage, 1, 0);

    drawValkyries();

    gfx.BeginPath();
    gfx.ImageRect(0, 0, desw, desh, dotsOverlayImage, 1, 0);
end

local progressTransitions = function (deltaTime)
    transitionRotateScale = transitionRotateScale + deltaTime / 20;
	if (transitionRotateScale > 1) then
		transitionRotateScale = 0;
    end
end

local draw = function (deltaTime)
    gfx.Save()
    resetLayoutInformation()
    gfx.Scale(scale, scale)

    drawBackground();

    progressTransitions(deltaTime);
    gfx.Restore()
end

return {
    draw = draw
};