1 files changed, 49 insertions, 0 deletions
diff --git a/not/MenuBackground.lua b/not/MenuBackground.lua
new file mode 100644
index 0000000..83b409c
--- /dev/null
+++ b/not/MenuBackground.lua
@@ -0,0 +1,49 @@
+--- `MenuBackground`
+-- Represented as space background with blinking stars and moving asteroids.
+-- It might be too specific, but whatever. It is still better than hardcoded background in `Menu` class.
+MenuBackground = require "not.Element":extends()
+
+MenuBackground.BASE_STARS_DELAY = .8
+MenuBackground.QUAD_STARS = {
+	love.graphics.newQuad(  0, 0, 320, 200, 640,200),
+	love.graphics.newQuad(320, 0, 320, 200, 640,200)
+}
+
+function MenuBackground:new (parent)
+	MenuBackground.__super.new(parent)
+	self.starsFrame = 1
+	self.starsDelay = self.BASE_STARS_DELAY
+	self.asteroidsBounce = 0
+	-- Load statically.
+	if MenuBackground.IMAGE_BACKGROUND == nil then
+		MenuBackground.IMAGE_BACKGROUND = love.graphics.newImage("assets/backgrounds/menu.png")
+		MenuBackground.IMAGE_ASTEROIDS = love.graphics.newImage("assets/asteroids.png")
+		MenuBackground.IMAGE_STARS = love.graphics.newImage("assets/stars.png")
+	end
+end
+
+function MenuBackground:update (dt)
+	self.asteroidsBounce = self.asteroidsBounce + dt*0.1
+	if self.asteroidsBounce > 2 then
+		self.asteroidsBounce = self.asteroidsBounce - 2
+	end
+	self.starsDelay = self.starsDelay - dt
+	if self.starsDelay < 0 then
+		self.starsDelay = self.starsDelay + self.BASE_STARS_DELAY
+		if self.starsFrame == 2 then
+			self.starsFrame = 1
+		else
+			self.starsFrame = 2
+		end
+	end
+end
+
+function MenuBackground:draw ()
+	local scale = self.scale
+	local scaler = getRealScale()
+	love.graphics.draw(self.IMAGE_BACKGROUND, 0, 0, 0, scaler, scaler)
+	love.graphics.draw(self.IMAGE_STARS, self.QUAD_STARS[self.starsFrame], 0, 0, 0, scaler, scaler)
+	love.graphics.draw(self.IMAGE_ASTEROIDS, 0, math.floor(64+math.sin(self.asteroidsBounce*math.pi)*4)*scaler, 0, scaler, scaler)
+end
+
+return MenuBackground