LÖVE

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-- global vars
screen_width =  love.graphics.getWidth()
screen_height = love.graphics.getHeight()
stage = 0

-- Creating tables
Level_One = {}
Player = {}
StartScreen = {}
Bullet = {}

-- Level One
function Level_One.init()
	local self = {}

	function self:draw()
		love.graphics.setColor(44, 62, 80)
		love.graphics.rectangle("fill", 0, 0, screen_width, screen_height)
	end

	return self
end

-- Player
function Player.init()
	local self = {}
	self.width = 25
	self.height = 25
	self.x = (screen_width/2) - (self.width/2)
	self.y = (screen_height) - (self.height * 2)
	self.bullets = {}

	function self:draw()
		love.graphics.setColor(153, 61, 255)
		love.graphics.rectangle("fill", self.x, self.y, self.width, self.height)
	end

	function self:shoot()
		b = Bullet.init(self.x, self.y)
		table.insert (self.bullets, b)
	end

	function self:update(dt)
		if love.keyboard.isDown( "up" ) then
		   self.y = self.y - 200 * dt
		end
		if love.keyboard.isDown( "down" ) then
		   self.y = self.y + 200 * dt
		end
		if love.keyboard.isDown( "right" ) then
		   self.x = self.x + 200 * dt
		end
		if love.keyboard.isDown( "left" ) then
		   self.x = self.x - 200 * dt
		end
		if love.keyboard.isDown( " " ) then
		   self:shoot(dt)
		end
	end

	return self
end

-- Bullet
function Bullet.init(x, y)

	local self = {}
	self.width = 5
	self.height = 5
	self.x = x
	self.y = y

	function self:draw()
		love.graphics.setColor(231, 76, 60)
		love.graphics.rectangle("fill", self.x, self.y, self.width, self.height)
	end

	function self:update(dt)
		self.y = self.y - 200 * dt
	end

	return self
end


function update_bullets(players_bullets, dt)
	for _, b in ipairs(players_bullets) do 
		b:update(dt) 
	end
end

function draw_bullets(players_bullets)
	for _, b in ipairs(players_bullets) do 
		b:draw() 
	end
end

-- Start Screen
function StartScreen.init()
	local self = {}
	self.music = love.audio.newSource("sounds/wake_up_call.mp3")
	self.start_text = "Tap to Start!"
	self.title_text = "NEW WARE ORDER"
	self.credit_text = "© 2014 Super Mega Turbo"
	self.screen_font = love.graphics.newFont("font/PressStart2P.ttf", 20)
	self.title_font = love.graphics.newFont("font/PressStart2P.ttf", 32)
	self.credit_font = love.graphics.newFont("font/PressStart2P.ttf", 12)
	self.start_text_width = self.screen_font:getWidth(self.start_text)
	self.start_text_height = self.screen_font:getHeight(self.start_text)	
	self.title_text_width = self.title_font:getWidth(self.title_text)
	self.credit_text_width = self.credit_font:getWidth(self.credit_text)
	self.title_text_height = self.title_font:getHeight(self.title_text)
	self.blink = true
	self.dt = 0

	function self:draw()
		love.graphics.setFont(self.title_font)
		love.graphics.setColor(155, 89, 182)
		love.graphics.print(self.title_text, (screen_width/2) - (self.title_text_width/2), 200)
		love.graphics.setFont(self.credit_font)
		love.graphics.setColor(255, 255, 255)
		love.graphics.print(self.credit_text, (screen_width/2) - (self.credit_text_width/2), (screen_height - 200))
		love.graphics.setFont(self.screen_font)
		love.graphics.setColor(255, 255, 255)
		if self.blink == true then
			love.graphics.print(self.start_text, (screen_width/2) - (self.start_text_width/2), (screen_height/2) - (self.start_text_height/2))
		end
	end

	function self:update(dt)
		self.music:play()
		self.dt = self.dt + dt
		if self.dt > 0.5 then
			self.blink = not self.blink 
			self.dt = self.dt - 0.5
		end
	end

	return self
end

-- Creating instances
start_screen = StartScreen.init()
level_one = Level_One.init()
player = Player.init()

-- Love game loop
function love.load()
	love.graphics.setBackgroundColor(0,0,0)
end

function love.draw()
	if stage == 0 then 
		start_screen:draw()
	elseif stage == 1 then
		level_one:draw()
		player:draw()
		draw_bullets(player.bullets)
	end 
end

function love.update(dt)
	if love.keyboard.isDown( "return" ) then
   		stage = 1
	end
	if stage == 0 then
		print(love.timer.getFPS( ))
		start_screen:update(dt)
	elseif stage == 1 then
		player:update(dt)
		update_bullets(player.bullets, dt)
		print(love.timer.getFPS( ))
	end
end