/**** 
* Classes
****/
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.createAsset('hero', 'Hero character', .5, .5);
	self.hitPoints = 3;
	self.move = function () {};
	self.shoot = function () {};
	self.dashToPointAndBack = function (targetX, targetY, onCompletion) {
		if (self.isDashing) {
			return;
		}
		self.isDashing = true;
		var originalX = 2048 * 0.1;
		var originalY = 2732 / 2;
		var dashSpeed = 30;
		var returnSpeed = 10;
		var dashComplete = false;
		self.isMovingRight = false;
		self.move = function () {
			if (!dashComplete) {
				self.isMovingRight = targetX - self.x > 0;
			}
			if (!dashComplete) {
				if (Math.abs(self.x - targetX) > dashSpeed || Math.abs(self.y - targetY) > dashSpeed) {
					self.x += (targetX - self.x > 0 ? 1 : -1) * dashSpeed;
					self.y += (targetY - self.y > 0 ? 1 : -1) * dashSpeed;
				} else {
					dashComplete = true;
					self.isMovingRight = false;
				}
			} else {
				if (Math.abs(self.x - originalX) > returnSpeed || Math.abs(self.y - originalY) > returnSpeed) {
					self.x += (originalX - self.x > 0 ? 1 : -1) * returnSpeed;
					self.y += (originalY - self.y > 0 ? 1 : -1) * returnSpeed;
				} else {
					self.x = originalX;
					self.y = originalY;
					self.move = function () {};
					if (typeof onCompletion === 'function') {
						onCompletion();
					}
					self.isDashing = false;
				}
			}
		};
	};
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.createAsset('enemy', 'Enemy character', .5, .5);
	self.speed = -15;
	self.move = function () {
		self.x += self.speed;
		self.y += Math.random() > 0.5 ? 10 : -10;
	};
	self.attack = function () {};
});
var HeroBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('heroBullet', 'Hero Bullet', .5, .5);
	self.move = function () {};
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('enemyBullet', 'Enemy Bullet', .5, .5);
	self.move = function () {};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/
// Create a background container to hold the green field asset
var backgroundContainer = new Container();
var greenFieldBackground = backgroundContainer.createAsset('greenField', 'Beautiful green field with grass and a bit of sky', 0, 0);
greenFieldBackground.width = 2048;
greenFieldBackground.height = 2732;
game.addChild(backgroundContainer);
backgroundContainer.zIndex = -1;

// Display for hit points
var hitPointsDisplay = new Text2('Hit Points: 3', {
	size: 50,
	fill: "#ffffff"
});
hitPointsDisplay.anchor.set(0, 0);
LK.gui.topLeft.addChild(hitPointsDisplay);

// Initialize Score display
var scoreDisplay = new Text2('Score: 0', {
	size: 50,
	fill: "#ffffff"
});
scoreDisplay.anchor.set(1, 0);
LK.gui.topRight.addChild(scoreDisplay);
var heroes = [];
var enemies = [];
var heroBullets = [];
var enemyBullets = [];
var hero = game.addChild(new Hero());
hero.x = 2048 * 0.1;
hero.y = 2732 / 2;
heroes.push(hero);
game.on('down', function (obj) {
	var event = obj.event;
	var position = event.getLocalPosition(game);
	if (!hero.intersects({
		x: position.x,
		y: position.y,
		width: 1,
		height: 1
	})) {
		hero.dashToPointAndBack(position.x, position.y, function () {
			console.log('Hero has returned to the original position.');
		});
	}
});
var enemy = game.addChild(new Enemy());
enemy.x = 2048 - enemy.width / 2;
enemy.y = 2732 - enemy.height / 2;
enemies.push(enemy);
var startTime = Date.now();
LK.on('tick', function () {
	// Update Score display
	var elapsedSeconds = Math.floor((Date.now() - startTime) / 1000);
	scoreDisplay.setText('Score: ' + elapsedSeconds);
	// Spawn enemies every second
	var spawnInterval = Math.max(20, 60 - Math.floor(LK.ticks / 1800));
	if (LK.ticks % spawnInterval == 0) {
		var newEnemy = game.addChild(new Enemy());
		newEnemy.x = 2048;
		newEnemy.y = Math.random() * 2732;
		enemies.push(newEnemy);
	}
	heroes.forEach(function (hero) {
		hero.move();
		enemies.forEach(function (enemy, enemyIndex) {
			if (hero.intersects(enemy) && hero.isMovingRight) {
				enemy.destroy();
				enemies.splice(enemyIndex, 1);
			}
		});
	});
	enemies.forEach(function (enemy, index) {
		enemy.move();
		enemy.attack();
		if (enemy.x < 0) {
			hero.hitPoints--;
			hitPointsDisplay.setText('Hit Points: ' + hero.hitPoints);
			enemy.destroy();
			enemies.splice(index, 1);
			if (hero.hitPoints <= 0) {
				LK.showGameOver();
			}
		}
	});
	heroBullets.forEach(function (bullet) {
		bullet.move();
	});
	enemyBullets.forEach(function (bullet) {
		bullet.move();
	});
});