/**** 
* Classes
****/ 
// Define the 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 = -20 - LK.ticks / 1000;
	self.update = function () {
		self.y += self.speed;
		if (self.y < -self.height) {
			self.destroy();
		}
	};
	return self;
});
// Define the Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 7;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.y = -self.height;
		}
		// Increase the size of the asteroid over time
		self.scaleX += 0.01;
		self.scaleY += 0.01;
	};
	return self;
});
//<Assets used in the game will automatically appear here>
// Define the Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.shield = null;
	self.update = function () {
		// Player update logic
		self.activateShield = function () {
			if (!self.shield) {
				self.shield = self.attachAsset('shield', {
					anchorX: 0.5,
					anchorY: 0.5
				});
				// Create a text to display 'Shield Activated' and the remaining shield duration
				var shieldText = new Text2('Shield Activated for 2 seconds', {
					size: 50,
					fill: "#ffffff"
				});
				shieldText.anchor.set(1, 1);
				LK.gui.bottomRight.addChild(shieldText);
				LK.setTimeout(function () {
					self.shield.destroy();
					self.shield = null;
					// Remove the 'Shield Activated' text when the shield is deactivated
					shieldText.destroy();
				}, 2000);
			}
		};
	};
	return self;
});
// Define the Powerup class
var Powerup = Container.expand(function () {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.y = -self.height;
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Initialize player
var player = new Player();
player.x = 2048 / 2;
player.y = 2732 - 200;
game.addChild(player);
// Initialize enemies
var enemies = [];
for (var i = 0; i < 5; i++) {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = Math.random() * -2732;
	enemies.push(enemy);
	game.addChild(enemy);
}
// Initialize bullets
var bullets = [];
// Initialize powerups
var powerups = [];
// Initialize score
var score = 0;
var highScore = 0;
// Create score text
var scoreText = new Text2('Score: 0', {
	size: 50,
	fill: "#ffffff"
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
// Handle player movement
game.move = function (x, y, obj) {
	var gridSize = 100; // Define the size of the grid
	player.x = Math.round(x / gridSize) * gridSize; // Snap the player's x position to the nearest grid point
};
// Keyboard inputs are not supported in this game engine
// Handle shooting
game.down = function (x, y, obj) {
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullets.push(bullet);
	game.addChild(bullet);
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullets.push(bullet);
	game.addChild(bullet);
};
// Update game state
game.update = function () {
	// Update player
	player.update();
	// Update enemies
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].update();
		if (player.intersects(enemies[i])) {
			if (player.shield) {
				enemies[i].destroy();
				enemies.splice(i, 1);
			} else {
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
			}
		}
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		bullets[j].update();
		for (var k = enemies.length - 1; k >= 0; k--) {
			if (bullets[j].intersects(enemies[k])) {
				bullets[j].destroy();
				bullets.splice(j, 1);
				enemies[k].destroy();
				enemies.splice(k, 1);
				// Increase score and update score text
				score++;
				scoreText.setText('Score: ' + score);
				break;
			}
		}
	}
	// Update powerups
	for (var l = powerups.length - 1; l >= 0; l--) {
		powerups[l].update();
		if (player.intersects(powerups[l])) {
			powerups[l].destroy();
			powerups.splice(l, 1);
			// Increase score and update score text
			score += 5;
			scoreText.setText('Score: ' + score);
			// Activate shield
			player.activateShield();
		}
	}
	// Spawn new enemies
	if (enemies.length < 10) {
		var newEnemy = new Enemy();
		newEnemy.x = Math.random() * 2048;
		newEnemy.y = Math.random() * -2732;
		enemies.push(newEnemy);
		game.addChild(newEnemy);
	}
	// Spawn new powerups
	if (powerups.length < 5 && LK.ticks % 600 == 0) {
		var newPowerup = new Powerup();
		newPowerup.x = Math.random() * 2048;
		newPowerup.y = Math.random() * -2732;
		powerups.push(newPowerup);
		game.addChild(newPowerup);
	}
};