var EngineParticle = Container.expand(function () {
	var self = Container.call(this);
	var particleGraphics = self.createAsset('engineParticle', 'Engine Particle Graphics', 0.5, 0.5);
	particleGraphics.rotation = Math.random() * Math.PI * 2;
	particleGraphics.blendMode = 1;
	self.speed = 20;
	self.move = function () {
		self.y += self.speed;
		self.alpha -= 0.03;
		if (self.alpha <= 0) self.destroy();
	};
});
var Cloud = Container.expand(function () {
	var self = Container.call(this);
	var cloudGraphics = self.createAsset('cloud', 'Cloud Graphics', 0.5, 0.5);
	self.speedY = 1;
	self.move = function () {
		var cloudSpeed = 0.5;
		self.y += cloudSpeed;
		if (self.y > 2732) {
			self.y = -cloudGraphics.height;
		}
	};
});
var HeroBullet = Container.expand(function (hero) {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('heroBullet', 'Hero Bullet Graphics', .5, .5);
	self.speed = -3;
	self.damage = 1;
	self.move = function () {
		self.x += self.speedX * self.scale.x * self.scale.x;
		self.y += self.speedY * self.scale.y * self.scale.y;
		self.rotation = hero.rotation + Math.PI / 2;
		self.damage = self.scale.x * self.scale.y;
	};
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('enemyBullet', 'Enemy Bullet Graphics', .5, .5);
	self.speed = 3;
	self.move = function () {
		self.y += self.speed;
	};
});
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.createAsset('hero', 'Hero character', .5, .5);
	self.movementDirection = 1;
	self.movementSpeed = 0.5;
	self.movementRange = 50;
	self.originalX = 2048 / 2;
	self.x = self.originalX;
	self.updateMovement = function () {
		self.x += self.movementDirection * self.movementSpeed;
		if (self.x < self.originalX - self.movementRange || self.x > self.originalX + self.movementRange) {
			self.movementDirection *= -1;
		}
	};
});
var Enemy = Container.expand(function (hero) {
	var self = Container.call(this);
	var enemyGraphics = self.createAsset('enemy', 'Enemy character', .5, .5);
	self.speedY = 2;
	self.hero = hero;
	self.lifebar = self.createAsset('lifebar', 'Enemy Lifebar', .5, 0);
	self.lifebar.y = -self.lifebar.height - 100;
	self.life = 100;
	self.move = function () {
		var dx = this.hero.x - this.x;
		var dy = this.hero.y - this.y;
		var angle = Math.atan2(dy, dx);
		var speedMultiplier = 1 + Math.floor(LK.ticks / 7200);
		self.x += (Math.cos(angle) * self.speedY + Math.sin(LK.ticks / 60) * 5) * speedMultiplier;
		self.y += Math.sin(angle) * self.speedY * speedMultiplier;
		self.lifebar.scale.x = self.life / 100;
	};
});
var ScrollingBackground = Container.expand(function () {
	var self = Container.call(this);
	self.secondBackground = self.createAsset('background', 'Second Game Background', 0, 0);
	self.secondBackground.width = 2048;
	self.secondBackground.height = 2732 * 2;
	self.secondBackground.y = -2732;
	var backgroundGraphics = self.createAsset('background', 'Game Background', 0, 0);
	backgroundGraphics.width = 2048;
	backgroundGraphics.height = 2732 * 2;
	self.y = -2732;
	self.scroll = function () {
		var backgroundSpeed = 1 + Math.floor(LK.ticks / 7200);
		self.y += backgroundSpeed;
		if (self.y >= 0) {
			self.y = -2732;
		}
		if (self.secondBackground) {
			self.secondBackground.y += backgroundSpeed;
			if (self.secondBackground.y >= 0) {
				self.secondBackground.y = -2732;
			}
		}
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var enemies = [];
	self.spawnEnemy = function () {
		var enemy = new Enemy(hero);
		enemy.x = Math.random() * 2048;
		enemy.y = -enemy.height;
		enemies.push(enemy);
		self.addChild(enemy);
	};
	var enemySpawnTicker = 0;
	LK.on('tick', function () {
		scrollingBackground.scroll();
		var spawnRate = Math.max(30, 120 - Math.floor(LK.ticks / 3600));
		if (enemySpawnTicker++ % spawnRate === 0) {
			self.spawnEnemy();
		}
	});
	var scrollingBackground = self.addChildAt(new ScrollingBackground(), 0);
	stage.on('up', function (obj) {
		if (currentBullet) {
			var pos = obj.event.getLocalPosition(self);
			var dx = pos.x - hero.x;
			var dy = pos.y - hero.y;
			var angle = Math.atan2(dy, dx);
			currentBullet.speedX = Math.cos(angle) * 15;
			currentBullet.speedY = Math.sin(angle) * 15;
			hero.rotation = angle;
			heroBullets.push(currentBullet);
			currentBullet = null;
		}
	});
	LK.on('tick', function () {
		hero.updateMovement();
		for (var i = 0; i < 5; i++) {
			var engineParticle = new EngineParticle();
			self.addChild(engineParticle);
			engineParticle.x = hero.x;
			engineParticle.y = hero.y + hero.height / 2;
		}
		for (var i = 0; i < 5; i++) {
			var engineParticle = new EngineParticle();
			engineParticle.x = hero.x;
			engineParticle.y = hero.y + hero.height / 2;
			self.addChild(engineParticle);
			engineParticle.move();
		}
		if (currentBullet) {
			var holdDuration = LK.ticks - holdTime;
			var sizeMultiplier = Math.max(1, 1 + Math.abs(Math.sin(holdDuration / 60)) * 3);
			currentBullet.scale.x = sizeMultiplier;
			currentBullet.scale.y = sizeMultiplier;
			currentBullet.rotation = hero.rotation;
		}
	});
	var currentBullet = null;
	var holdTime = 0;
	var hero;
	hero = self.addChild(new Hero());
	hero.rotation = -Math.PI / 2;
	stage.on('down', function (obj) {
		var pos = obj.event.getLocalPosition(self);
		var dx = pos.x - hero.x;
		var dy = pos.y - hero.y;
		var angle = Math.atan2(dy, dx);
		hero.rotation = angle;
		currentBullet = new HeroBullet(hero);
		currentBullet.x = hero.x;
		currentBullet.y = hero.y - hero.height / 2 - currentBullet.height / 2 - 10;
		currentBullet.rotation = hero.rotation;
		self.addChild(currentBullet);
		holdTime = LK.ticks;
	});
	stage.on('move', function (obj) {
		var pos = obj.event.getLocalPosition(self);
		var dx = pos.x - hero.x;
		var dy = pos.y - hero.y;
		var angle = Math.atan2(dy, dx);
		hero.rotation = angle;
	});
	var enemies = [];
	var heroBullets = [];
	var enemyBullets = [];
	var clouds = [];
	for (var i = 0; i < 5; i++) {
		var cloud = new Cloud();
		cloud.x = Math.random() * 2048;
		cloud.y = Math.random() * -2732;
		clouds.push(cloud);
		self.addChildAt(cloud, 1);
	}
	var scoreTxt = new Text2('0', {
		size: 150,
		fill: "#ffffff",
		dropShadow: true,
		dropShadowColor: "#000000",
		dropShadowBlur: 4,
		dropShadowAngle: Math.PI / 6,
		dropShadowDistance: 6
	});
	LK.gui.topCenter.addChild(scoreTxt);
	var isGameOver = false;
	hero.x = 2048 / 2;
	hero.y = 2732 - 280;
	LK.on('tick', function () {
		for (var i = 0; i < heroBullets.length; i++) {
			heroBullets[i].move();
			for (var j = 0; j < enemies.length; j++) {
				if (heroBullets[i].intersects(enemies[j])) {
					enemies[j].life -= heroBullets[i].damage * 10;
					if (enemies[j].life <= 0) {
						var scoreIncrement = 10 + Math.floor(LK.ticks / 3600);
						LK.setScore(LK.getScore() + scoreIncrement);
						scoreTxt.setText(LK.getScore().toString());
						enemies[j].destroy();
						enemies.splice(j, 1);
					}
					heroBullets[i].destroy();
					heroBullets.splice(i, 1);
					break;
				}
			}
			if (heroBullets[i] && heroBullets[i].y < -50) {
				heroBullets[i].destroy();
				heroBullets.splice(i, 1);
			}
		}
		for (var i = 0; i < enemyBullets.length; i++) {
			enemyBullets[i].move();
			if (enemyBullets[i].y > 2732 + 50) {
				enemyBullets[i].destroy();
				enemyBullets.splice(i, 1);
			}
		}
		for (var i = 0; i < enemies.length; i++) {
			if (enemies[i].intersects(hero)) {
				isGameOver = true;
				break;
			}
		}
		for (var i = 0; i < enemies.length; i++) {
			enemies[i].move();
			if (enemies[i].y > 2732) {
				enemies[i].destroy();
				enemies.splice(i, 1);
				i--;
			}
		}
		clouds.forEach(function (cloud) {
			cloud.move();
		});
		if (isGameOver) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	});
});