/**** 
* Classes
****/ 
//<Assets used in the game will automatically appear here>
// Bird class
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = 0;
	self.gravity = 0.5;
	self.flapStrength = -15;
	self.update = function () {
		self.velocity += self.gravity;
		self.y += self.velocity;
		if (self.y > 2732 - birdGraphics.height / 2) {
			self.y = 2732 - birdGraphics.height / 2;
			self.velocity = 0;
			if (game.isStarted) {
				game.isStarted = false;
				LK.showGameOver();
			}
		}
		if (self.y < birdGraphics.height / 2) {
			self.y = birdGraphics.height / 2;
			self.velocity = 0;
			if (game.isStarted) {
				game.isStarted = false;
				LK.showGameOver();
			}
		}
	};
	self.flap = function () {
		self.velocity = self.flapStrength;
		LK.getSound('flap').play();
	};
});
// Pillar class
var Pillar = Container.expand(function () {
	var self = Container.call(this);
	var pillarGraphics = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.x -= 10;
		if (self.x < -pillarGraphics.width / 2) {
			self.destroy();
		}
		if (self.intersects(bird)) {
			game.isStarted = false;
			LK.showGameOver();
		}
	};
});
// StartButton class
var StartButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('startButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.interactive = true;
	self.buttonMode = true;
	self.down = function (x, y, obj) {
		startGame();
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x0000FF // Init game with blue background
});

/**** 
* Game Code
****/ 
var walls = [];
var sky = LK.getAsset('sky', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2
});
game.addChild(sky);
var cloud = LK.getAsset('cloud', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 4
});
game.addChild(cloud);
var sun = LK.getAsset('sun', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 - 150,
	y: 150
});
game.addChild(sun);
var startButton = game.addChild(new StartButton());
startButton.x = 2048 / 2;
startButton.y = 2732 / 2;
var bird = new Bird();
bird.x = 2048 / 4;
bird.y = bird.height / 2;
var pipes = [];
var score = 0;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
game.isStarted = false;
function startGame() {
	game.isStarted = true;
	score = 0;
	scoreTxt.setText(score.toString());
	game.addChild(bird);
	game.down = function (x, y, obj) {
		bird.flap();
	};
	game.update = function () {
		if (game.isStarted) {
			bird.update();
			if (LK.ticks % 60 == 0) {
				// Top pillar
				var topPillar = new Pillar();
				topPillar.x = 2048;
				topPillar.y = Math.random() * (2732 / 3);
				walls.push(topPillar);
				game.addChild(topPillar);
				// Ground pillar
				var groundPillar = new Pillar();
				groundPillar.x = 2048;
				groundPillar.y = 2732 - Math.random() * (2732 / 3);
				walls.push(groundPillar);
				game.addChild(groundPillar);
				// Middle pillar
				var middlePillar = new Pillar();
				middlePillar.x = 2048;
				middlePillar.y = Math.random() * (2732 / 3) + 2732 / 3;
				walls.push(middlePillar);
				game.addChild(middlePillar);
			}
			for (var i = walls.length - 1; i >= 0; i--) {
				walls[i].update();
				if (walls[i].intersects(bird)) {
					game.isStarted = false;
					LK.showGameOver();
				} else if (walls[i].x + walls[i].width / 2 < bird.x - bird.width / 2 && !walls[i].scored) {
					score += 2;
					scoreTxt.setText(score.toString());
					walls[i].scored = true;
				}
			}
		}
	};
	startButton.destroy();
}
game.update = function () {
	bird.update();
	scoreTxt.setText(score.toString());
};