/**** 
* Classes
****/ 
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var leftWing = self.attachAsset('wing', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var rightWing = self.attachAsset('wing', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	leftWing.x = -enemyGraphics.width / 2 - leftWing.width / 2;
	rightWing.x = enemyGraphics.width / 2 + rightWing.width / 2;
	self.speed = 4 + waveNumber * enemySpeedIncrement; // Initialize enemy speed with progression
	self.update = function () {
		var dx = player.x - self.x;
		var dy = player.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		leftWing.y = Math.sin(LK.ticks / 5) * 10;
		rightWing.y = Math.sin(LK.ticks / 5) * 10;
		self.x += dx / distance * self.speed;
		self.y += dy / distance * self.speed + Math.sin(LK.ticks / 20) * 2;
		var dx = self.x - player.x;
		var dy = self.y - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < self.width / 2 + player.width / 2) {
			LK.showGameOver();
		}
	};
});
// 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 = 4 + waveNumber * enemySpeedIncrement; // Initialize power-up speed with progression
	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;
		// Add a scale effect to the powerup to make it seem cartoony
		self.scale.x = 1 + Math.sin(LK.ticks / 10) * 0.1;
		self.scale.y = 1 + Math.sin(LK.ticks / 10) * 0.1;
		var dx = self.x - player.x;
		var dy = self.y - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < self.width / 2 + player.width / 2) {
			self.destroy();
			circle.scale.x *= 1.25;
			circle.scale.y *= 1.25;
		}
	};
});

/**** 
* 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
****/ 
function isInsideCircle(object, circle) {
	var dx = object.x - circle.x;
	var dy = object.y - circle.y;
	var distance = Math.sqrt(dx * dx + dy * dy);
	return distance < circle.width / 2;
}
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 && isInsideCircle(game.children[i], circle)) {
			game.children[i].destroy();
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText(LK.getScore());
		} else if (game.children[i] instanceof PowerUp && isInsideCircle(game.children[i], circle)) {
			game.children[i].destroy();
		}
	}
	circle.scale.x *= 0.9;
	circle.scale.y *= 0.9;
	// Add flash effect as a replacement for shake
	LK.effects.flashScreen(0xffff00, 200); // Flash yellow for 500ms
};
function spawnPowerUp() {
	var powerUp = new PowerUp();
	if (player) {
		var side = Math.floor(Math.random() * 4);
		if (side == 0) {
			// Top
			powerUp.x = Math.random() * 2048;
			powerUp.y = -50;
		} else if (side == 1) {
			// Right
			powerUp.x = 2048 + 50;
			powerUp.y = Math.random() * 2732;
		} else if (side == 2) {
			// Bottom
			powerUp.x = Math.random() * 2048;
			powerUp.y = 2732 + 50;
		} else {
			// Left
			powerUp.x = -50;
			powerUp.y = Math.random() * 2732;
		}
		game.addChild(powerUp);
	}
}
// Power-ups will now spawn between waves
// 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);
}
// Variables to manage waves and power-up spawning
var waveNumber = 0;
var enemiesPerWave = 5;
var enemiesSpawned = 0;
var waveInterval = 5000; // 5 seconds between waves
var enemySpeedIncrement = 0.25; // Speed increment per wave
var enemiesPerWaveIncrement = 1; // Additional enemies per wave
function startNextWave() {
	waveNumber++;
	enemiesSpawned = 0;
	enemiesPerWave += enemiesPerWaveIncrement; // Increase number of enemies per wave
	Enemy.prototype.speed += enemySpeedIncrement; // Increase enemy speed
	PowerUp.prototype.speed += enemySpeedIncrement; // Increase power-up speed
	spawnEnemiesInWave();
}
function spawnEnemiesInWave() {
	if (enemiesSpawned < enemiesPerWave) {
		spawnEnemy();
		enemiesSpawned++;
		LK.setTimeout(spawnEnemiesInWave, 500); // 0.5 seconds between enemy spawns
	} else {
		// Spawn power-up after the wave
		LK.setTimeout(spawnPowerUp, 1000);
		// Start the next wave after a delay
		LK.setTimeout(startNextWave, waveInterval);
	}
}
// Create a circle in the center of the screen
var circle = new Container();
var circleGraphics = circle.attachAsset('circle', {
	anchorX: 0.5,
	anchorY: 0.5
});
game.addChild(circle);
circle.x = 2048 / 2;
circle.y = 2732 / 2;
// Initialize score text
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Update score text whenever the score changes
LK.on('scoreChange', function () {
	scoreTxt.setText(LK.getScore());
});
// Start the first wave
startNextWave();
// Add player to the game
var player = new Player();
game.addChild(player);
player.x = 2048 / 2; // Center player horizontally
player.y = 2732 / 2; // Center player vertically;