Add first version

main.lua

@@ -0,0 +1,84 @@
+function love.load()
+	math.randomseed(os.time())
+	game = {}
+	game.width = 800
+	game.height = 480
+	love.window.setMode(game.width, game.height)
+	-- Background
+	background = {}
+	background.img = love.graphics.newImage('assets/sprites/background.jpg')
+	background.x = 0
+	background.y = 0
+	-- Spaceship
+	spaceship = {}
+	spaceship.img = love.graphics.newImage('assets/sprites/spaceship.png')
+	spaceship.x = game.height / 8
+	spaceship.num_frames = 4
+	spaceship.pos_frame = 1
+  	spaceship.frame_width = spaceship.img:getWidth() / spaceship.num_frames
+	spaceship.y = {
+		(game.height / 4) - (spaceship.img:getHeight() / 2),	
+		2 * (game.height / 4) - (spaceship.img:getHeight() / 2),	
+		3 * (game.height / 4) - (spaceship.img:getHeight() / 2),	
+	}
+	spaceship.pos = 2
+	spaceship.frames = {
+                 love.graphics.newQuad(spaceship.frame_width * 0, 0, spaceship.frame_width, spaceship.img:getHeight(), spaceship.img:getWidth(), spaceship.img:getHeight()),
+                 love.graphics.newQuad(spaceship.frame_width * 1, 0, spaceship.frame_width, spaceship.img:getHeight(), spaceship.img:getWidth(), spaceship.img:getHeight()),
+                 love.graphics.newQuad(spaceship.frame_width * 2, 0, spaceship.frame_width, spaceship.img:getHeight(), spaceship.img:getWidth(), spaceship.img:getHeight()),
+                 love.graphics.newQuad(spaceship.frame_width * 3, 0, spaceship.frame_width, spaceship.img:getHeight(), spaceship.img:getWidth(), spaceship.img:getHeight())
+             }
+	-- Asteroids
+	num_asteroids = 3
+	asteroids = {}
+	for i = 1, num_asteroids do
+		asteroid = {}
+		asteroid.img = love.graphics.newImage('assets/sprites/asteroid_1.png')
+		asteroid.x = game.width
+		asteroid.y = {
+			(game.height / 4) - (asteroid.img:getHeight() / 2),	
+			2 * (game.height / 4) - (asteroid.img:getHeight() / 2),	
+			3 * (game.height / 4) - (asteroid.img:getHeight() / 2),	
+		}
+		asteroid.pos = 2
+		asteroid.speed = 100
+		asteroids[i] = asteroid
+	end
+end
+
+function love.update(dt)
+	-- Sprite spaceship
+	if spaceship.pos_frame ~= spaceship.num_frames then
+		spaceship.pos_frame = spaceship.pos_frame + 1
+	else
+		spaceship.pos_frame = 1
+	end
+	-- Asteroids
+	for key, asteroid in pairs(asteroids) do
+		asteroid.x = asteroid.x - (dt * asteroid.speed)
+		if asteroid.x < -asteroid.img:getWidth() then
+			asteroid.x = game.width + math.random(0, game.width)
+			asteroid.pos = math.random(1, 3)
+		end
+	end
+end
+
+function love.draw()
+	love.graphics.draw(background.img, background.x, background.y)
+	love.graphics.draw(spaceship.img, spaceship.frames[spaceship.pos_frame], spaceship.x, spaceship.y[spaceship.pos])
+	for key, asteroid in pairs(asteroids) do
+		love.graphics.draw(asteroid.img, asteroid.x, asteroid.y[asteroid.pos])
+	end
+end
+
+-- Controls
+function love.keypressed(key, scancode, isrepeat)
+	if key == 'escape' then
+		love.event.push('quit')
+	end
+	if key == 'up' and spaceship.pos > 1 then
+		spaceship.pos = spaceship.pos - 1
+	elseif key == 'down' and spaceship.pos < 3 then
+		spaceship.pos = spaceship.pos + 1
+	end
+end