/**** 
* Classes
****/ 
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.update = function () {
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		self.x += dx / distance * self.speed;
		self.y += dy / distance * self.speed;
	};
});
// Create a player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.update = function () {
		self.y -= self.speed;
		if (self.intersects(player)) {
			self.destroy();
			circle.scale.x *= 1.2;
			circle.scale.y *= 1.2;
		}
	};
});

/**** 
* Initialize Game
****/ 
// Add player to the game
//<Assets used in the game will automatically appear here>
//<Write entity 'classes' with empty functions for important behavior here>
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background
});

/**** 
* Game Code
****/ 
game.down = function (x, y, obj) {
	console.log("Screen was pressed at", x, y);
	for (var i = game.children.length - 1; i >= 0; i--) {
		if (game.children[i] instanceof Enemy && game.children[i].intersects(circle)) {
			game.children[i].destroy();
		}
	}
	circle.scale.x *= 0.9;
	circle.scale.y *= 0.9;
	// Add shake effect
	LK.effects.shakeScreen(10, 500); // Shake intensity of 10 and duration of 500ms
};
function spawnPowerUp() {
	var powerUp = new PowerUp();
	if (player) {
		powerUp.x = player.x;
		powerUp.y = 2800;
		game.addChild(powerUp);
	}
}
LK.setInterval(spawnPowerUp, 6000);
// Add player to the game
var player = game.addChild(new Player());
player.x = 2048 / 2; // Center player horizontally
player.y = 2732 / 2; // Center player vertically;
// Spawn enemies from outside the screen
function spawnEnemy() {
	var enemy = new Enemy();
	var side = Math.floor(Math.random() * 4);
	if (side == 0) {
		// Top
		enemy.x = Math.random() * 2048;
		enemy.y = -50;
	} else if (side == 1) {
		// Right
		enemy.x = 2048 + 50;
		enemy.y = Math.random() * 2732;
	} else if (side == 2) {
		// Bottom
		enemy.x = Math.random() * 2048;
		enemy.y = 2732 + 50;
	} else {
		// Left
		enemy.x = -50;
		enemy.y = Math.random() * 2732;
	}
	game.addChild(enemy);
}
// Call spawnEnemy function every second
LK.setInterval(spawnEnemy, 1000);
// Create a circle in the center of the screen
var circle = game.addChild(LK.getAsset('circle', {
	anchorX: 0.5,
	anchorY: 0.5
}));
circle.x = 2048 / 2;
circle.y = 2732 / 2;
circle.alpha = 0.5; // Make the circle transparent