var PresentDeliveryEffect = Container.expand(function () {
	var self = Container.call(this);
	var effectGraphics = self.createAsset('presentDeliveryEffect', 'Present Delivery Effect', 0.5, 0.5);
	self.animate = function () {
		self.alpha = 1;
		var fadeOut = function () {
			if (self.alpha > 0) {
				self.alpha -= 0.05;
				LK.setTimeout(fadeOut, 50);
			} else {
				self.destroy();
			}
		};
		fadeOut();
	};
});
var LifeIcon = Container.expand(function () {
	var self = Container.call(this);
	var lifeIconGraphics = self.createAsset('lifeIcon', 'Life Icon', 0.5, 0.5);
});
var Star = Container.expand(function () {
	var self = Container.call(this);
	var starGraphics = self.createAsset('star', 'Star', 0.5, 0.5);
	self.speed = 2 + Math.random() * 3;
	self.move = function () {
		self.x -= self.speed;
		if (self.x < -self.width) {
			self.parent.removeChild(self);
			return true;
		}
		return false;
	};
});
var Santa = Container.expand(function () {
	var self = Container.call(this);
	self.resetPresents = function () {
		this.presentCounter = 10;
		this.parent.presentCounterTxt.setText(this.presentCounter.toString());
	};
	var santaGraphics = self.createAsset('santa', 'Santa character', .5, .5);
	self.move = function (pos) {
		self.x += (pos.x - self.x) * 0.1;
		self.y += (pos.y - self.y) * 0.1;
	};
	self.throwPresent = function () {
		if (this.presentCounter > 0) {
			var present = new Present();
			present.x = this.x;
			present.y = this.y;
			this.parent.addChild(present);
			this.parent.presents.push(present);
			this.presentCounter--;
			this.parent.presentCounterTxt.setText(this.presentCounter.toString());
		}
		if (this.presentCounter === 0 && !this.parent.rudolph) {
			this.parent.rudolph = this.parent.addChild(new Rudolph());
			this.parent.rudolph.x = Math.random() * 2048;
			this.parent.rudolph.y = Math.random() * (2732 * 0.55 - 2732 * 0.2) + 2732 * 0.2;
			this.parent.rudolph.speed = Math.max(this.parent.hazardSpeed * 1.5, 10);
			this.parent.rudolphSpawnCounter++;
			this.parent.hazardSpeed += 5 * this.parent.rudolphSpawnCounter;
		}
	};
});
var Present = Container.expand(function () {
	var self = Container.call(this);
	var presentGraphics = self.createAsset('present', 'Present', .5, .5);
	self.move = function (hazards) {
		this.y += 5;
		var intersectedHazard = hazards.find(hazard => this.intersects(hazard));
		if (intersectedHazard) {
			this.parent.removeChild(this);
			intersectedHazard.parent.removeChild(intersectedHazard);
		}
	};
});
var Chimney = Container.expand(function () {
	var self = Container.call(this);
	var chimneyGraphics = self.createAsset('chimney', 'Chimney', .5, .5);
	self.originalTint = 0xFFFFFF;
	self.presentDeliveredTint = 0x00FF00;
	self.hasPresent = false;
	self.speed = 2;
	self.move = function () {
		self.x -= self.speed;
		if (self.x < -self.width) {
			self.x = 2048;
		}
	};
	self.checkCollision = function () {};
});
var Hazard = Container.expand(function () {
	var self = Container.call(this);
	var hazardGraphics = self.createAsset('hazard', 'Hazard', .5, .5);
	self.move = function () {
		self.x -= self.speed;
		if (self.x < -self.width) {
			if (self.parent) {
				self.parent.removeChild(self);
			}
			return true;
		}
		return false;
	};
});
var Rudolph = Container.expand(function () {
	var self = Container.call(this);
	var rudolphGraphics = self.createAsset('rudolph', 'Rudolph', 0.5, 0.5);
	self.angle = 0;
	self.radius = 200;
	self.speed = 0.05;
	self.move = function () {
		self.angle += self.speed;
		var screenWidth = 2048;
		var screenHeight = 2732;
		var margin = 100;
		self.x = margin + (screenWidth - 2 * margin) * 0.5 * (1 + Math.cos(self.angle));
		self.y = margin + (screenHeight - 2 * margin) * 0.5 * (1 + Math.sin(self.angle));
		if (self.angle > 2 * Math.PI) self.angle -= 2 * Math.PI;
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	self.stars = [];
	var starSpawnRate = 15;
	var starSpawnCounter = 0;
	var santa = self.addChild(new Santa());
	santa.x = 2048 / 2;
	santa.y = 2732 / 2;
	santa.lives = 3;
	self.lifeIcons = [];
	var lifeIconSpacing = 20;
	var lifeIconSize = 64;
	for (var i = 0; i < santa.lives; i++) {
		var lifeIcon = new LifeIcon();
		lifeIcon.x = lifeIconSpacing + 50 + i * (lifeIconSize + lifeIconSpacing);
		lifeIcon.y = lifeIconSpacing + 50;
		self.lifeIcons.push(lifeIcon);
		LK.gui.topLeft.addChild(lifeIcon);
	}
	santa.presentCounter = 10;
	self.presents = [];
	var chimneys = [];
	var hazards = [];
	var hazardSpeed = 5;
	var hazardSpawnRate = 120;
	var hazardSpawnCounter = 0;
	var rudolphSpawnCounter = 0;
	var scoreTxt = new Text2('0', {
		size: 150,
		fill: "#ffffff"
	});
	var presentIcon = self.createAsset('presentIcon', 'Present Icon', 0.5, 0);
	presentIcon.x = 60;
	presentIcon.y = self.lifeIcons[self.lifeIcons.length - 1].y + lifeIconSize + lifeIconSpacing;
	LK.gui.topLeft.addChild(presentIcon);
	var presentCounterTxt = new Text2(santa.presentCounter.toString(), {
		size: 80,
		fill: "#ffffff"
	});
	presentCounterTxt.x = presentIcon.x + presentIcon.width + 10;
	presentCounterTxt.y = presentIcon.y;
	self.presentCounterTxt = presentCounterTxt;
	LK.gui.topLeft.addChild(presentCounterTxt);
	var maxChimneys = 5;
	LK.on('tick', function () {
		if (starSpawnCounter++ >= starSpawnRate) {
			var newStar = new Star();
			newStar.x = 2048;
			newStar.y = Math.random() * (2732 * 0.8);
			self.stars.push(newStar);
			self.addChild(newStar);
			starSpawnCounter = 0;
		}
		if (chimneys.length < maxChimneys) {
			var lastChimney = chimneys[chimneys.length - 1];
			var chimneySpacing = 500;
			if (!lastChimney || lastChimney.x < 2048 - chimneySpacing) {
				var newChimney = new Chimney();
				newChimney.x = 2048;
				newChimney.y = 2732 - newChimney.height - Math.random() * 500 + 750;
				chimneys.push(newChimney);
				self.addChild(newChimney);
			}
		}
		chimneys.forEach(function (chimney) {
			chimney.move();
			self.presents.forEach(function (present, index) {
				if (present.intersects(chimney) && !chimney.hasPresent) {
					present.destroy();
					self.presents.splice(index, 1);
					chimney.hasPresent = true;
					var deliveryEffect = new PresentDeliveryEffect();
					deliveryEffect.x = chimney.x;
					deliveryEffect.y = chimney.y - chimney.height / 2;
					self.addChild(deliveryEffect);
					deliveryEffect.animate();
					var newScore = LK.getScore() + 1;
					LK.setScore(newScore);
					scoreTxt.setText(newScore.toString());
				}
			});
		});
		chimneys = chimneys.filter(function (chimney) {
			return chimney.x + chimney.width > 0;
		});
	});
	scoreTxt.anchor.set(.5, 0);
	LK.gui.topCenter.addChild(scoreTxt);
	LK.on('tick', function () {
		for (var i = 0; i < self.presents.length; i++) {
			self.presents[i].move(hazards);
		}
		for (var i = 0; i < chimneys.length; i++) {
			chimneys[i].checkCollision();
		}
		if (hazardSpawnCounter++ >= hazardSpawnRate) {
			var newHazard = new Hazard();
			newHazard.x = 2048;
			newHazard.y = Math.random() * (2732 * 0.6) + 2732 * 0.2;
			newHazard.speed = hazardSpeed;
			hazards.push(newHazard);
			self.addChild(newHazard);
			hazardSpawnCounter = 0;
		}
		hazards = hazards.filter(function (hazard) {
			return !hazard.move();
		});
		var santaHit = false;
		if (self.rudolph && santa.intersects(self.rudolph)) {
			santa.resetPresents();
			self.rudolph.destroy();
			self.rudolph = null;
		} else {
			hazards.forEach(function (hazard, index) {
				if (!santaHit && santa.intersects(hazard)) {
					hazard.destroy();
					hazards.splice(index, 1);
					santaHit = true;
					santa.lives--;
					if (self.lifeIcons.length > santa.lives) {
						var removedLifeIcon = self.lifeIcons.pop();
						removedLifeIcon.destroy();
					}
					if (santa.lives <= 0) {
						LK.showGameOver();
					}
				}
			});
		}
		hazards = hazards.filter(function (hazard) {
			return !hazard.hitSanta;
		});
		self.stars = self.stars.filter(function (star) {
			return !star.move();
		});
	});
	stage.on('move', function (obj) {
		var pos = obj.event.getLocalPosition(self);
		if (pos.y < 2732 * 0.8) {
			santa.move(pos);
		}
	});
	stage.on('up', function (obj) {
		santa.throwPresent();
	});
});