/**** 
* Classes
****/ 
// Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -10;
	self.update = function () {
		self.y += self.speed;
		// Check if the bullet is off-screen and needs to be removed
		if (self.y < -self.height) {
			self.destroy();
		}
	};
});
// Explosion class
var Explosion = Container.expand(function () {
	var self = Container.call(this);
	var explosionGraphics = self.attachAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Create fragments
		for (var i = 0; i < 10; i++) {
			var fragment = new Fragment();
			fragment.x = self.x;
			fragment.y = self.y;
			game.addChild(fragment);
		}
		// Destroy the explosion
		self.destroy();
	};
});
// Fragment class
var Fragment = Container.expand(function () {
	var self = Container.call(this);
	var fragmentGraphics = self.attachAsset('fragment', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = (Math.random() - 0.5) * 10;
	self.speedY = (Math.random() - 0.5) * 10;
	self.gravity = 0.5;
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.speedY += self.gravity;
		if (self.y > 2732 + self.height) {
			self.destroy();
		}
	};
});
// Assets will be automatically created and loaded by the LK engine based on usage in the game code.
// Hero class
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Hero update logic, such as movement, can be added here.
		// Add scaling effect along the x-axis
		self.scale.x = 1 + Math.sin(LK.ticks / 10) * 0.1;
	};
});
// Obstacle class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		self.rotation += 0.01;
		// Check if the obstacle is off-screen and needs to be removed
		if (self.y > 2732 + self.height) {
			self.destroy();
		}
	};
});

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

/**** 
* Game Code
****/ 
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
}));
var hero;
var obstacles = [];
var bullets = [];
var score = 0;
var scoreTxt;
function spawnObstacle() {
	var obstacle = new Obstacle();
	obstacle.x = Math.random() * (2048 - obstacle.width) + obstacle.width / 2;
	obstacle.y = -obstacle.height / 2;
	obstacles.push(obstacle);
	game.addChild(obstacle);
}
function fireBullet() {
	var bullet = new Bullet();
	bullet.x = hero.x;
	bullet.y = hero.y - hero.height / 2 - bullet.height / 2;
	bullets.push(bullet);
	game.addChild(bullet);
}
function checkCollisions() {
	bullets.forEach(function (bullet, bulletIndex) {
		obstacles.forEach(function (obstacle, obstacleIndex) {
			if (bullet.intersects(obstacle)) {
				bullet.destroy();
				obstacle.destroy();
				// Create an explosion at the location of the destroyed obstacle
				var explosion = new Explosion();
				explosion.x = obstacle.x;
				explosion.y = obstacle.y;
				game.addChild(explosion);
				bullets.splice(bulletIndex, 1);
				obstacles.splice(obstacleIndex, 1);
				score += 10;
				scoreTxt.setText("Score: " + score);
			}
		});
	});
}
// Initialize hero
hero = new Hero();
hero.x = 1024; // Center horizontally
hero.y = 2732 - 200; // Position from the bottom
game.addChild(hero);
// Initialize score display
scoreTxt = new Text2("Score: 0", {
	size: 100,
	fill: "#ffffff"
});
LK.gui.top.addChild(scoreTxt);
// Game update function
game.update = function () {
	if (LK.ticks % 120 == 0) {
		// Spawn an obstacle every 2 seconds
		spawnObstacle();
	}
	if (LK.ticks % 30 == 0) {
		// Fire a bullet every 0.5 seconds
		fireBullet();
	}
	checkCollisions();
};
// Touch event to move the hero
game.down = function (x, y, obj) {
	var gamePos = game.toLocal(obj.global);
	hero.x = gamePos.x;
};
game.move = function (x, y, obj) {
	var gamePos = game.toLocal(obj.global);
	hero.x = gamePos.x;
};