/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var Asteroid = Container.expand(function () {
	var self = Container.call(this);
	var asteroidGraphics = self.attachAsset('asteroid', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5 + Math.random() * 4;
	self.rotationSpeed = (Math.random() - 0.5) * 0.1;
	self.update = function () {
		self.y += self.speed;
		asteroidGraphics.rotation += self.rotationSpeed;
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -12;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2 + Math.random() * 3;
	self.shootTimer = Math.floor(Math.random() * 120) + 60;
	self.health = 1;
	self.update = function () {
		self.y += self.speed;
		self.shootTimer--;
		if (self.shootTimer <= 0 && self.y < 2500) {
			self.shoot();
			self.shootTimer = 60 + Math.floor(Math.random() * 60);
		}
	};
	self.shoot = function () {
		var bullet = new EnemyBullet();
		bullet.x = self.x;
		bullet.y = self.y + 40;
		enemyBullets.push(bullet);
		game.addChild(bullet);
	};
	self.takeDamage = function () {
		self.health--;
		if (self.health <= 0) {
			self.destroy();
			LK.setScore(LK.getScore() + 10);
			LK.getSound('enemyDestroy').play();
		}
	};
	return self;
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.pulseTimer = 0;
	self.update = function () {
		self.y += self.speed;
		self.pulseTimer += 0.1;
		powerUpGraphics.scaleX = 1 + Math.sin(self.pulseTimer) * 0.3;
		powerUpGraphics.scaleY = 1 + Math.sin(self.pulseTimer) * 0.3;
	};
	return self;
});
var Spaceship = Container.expand(function () {
	var self = Container.call(this);
	var spaceshipGraphics = self.attachAsset('spaceship', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 5;
	self.fireRate = 5;
	self.fireTimer = 1;
	self.powerUpTimer = 0;
	self.hasPowerUp = false;
	self.update = function () {
		if (self.fireTimer > 0) {
			self.fireTimer--;
		}
		if (self.powerUpTimer > 0) {
			self.powerUpTimer--;
			spaceshipGraphics.tint = 0x00FFFF;
		} else {
			self.hasPowerUp = false;
			spaceshipGraphics.tint = 0xFFFFFF;
		}
	};
	self.shoot = function () {
		if (self.fireTimer <= 0) {
			var bullet = new Bullet();
			bullet.x = self.x;
			bullet.y = self.y - 50;
			bullets.push(bullet);
			game.addChild(bullet);
			self.fireTimer = self.hasPowerUp ? 5 : self.fireRate;
			LK.getSound('shoot').play();
		}
	};
	self.takeDamage = function () {
		self.health--;
		LK.effects.flashObject(self, 0xFF0000, 500);
		if (self.health <= 0) {
			LK.getSound('explosion').play();
			LK.showGameOver();
		}
	};
	self.applyPowerUp = function () {
		self.hasPowerUp = true;
		self.powerUpTimer = 300; // 5 seconds at 60fps
		LK.getSound('powerUpCollect').play();
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x222222
});

/**** 
* Game Code
****/ 
// Game variables
var spaceship;
var enemies = [];
var asteroids = [];
var bullets = [];
var enemyBullets = [];
var powerUps = [];
var dragNode = null;
var spawnTimer = 0;
var waveTimer = 0;
var difficultyLevel = 1;
var lastSpaceshipX = 0;
var lastSpaceshipY = 0;
// UI Elements
var scoreText = new Text2('XP: 0', {
	size: 75,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0, 0);
scoreText.x = 120;
scoreText.y = 50;
LK.gui.topLeft.addChild(scoreText);
var healthText = new Text2('Health: 3', {
	size: 120,
	fill: 0x00FF00
});
healthText.anchor.set(1, 0);
LK.gui.topRight.addChild(healthText);
// Initialize spaceship
spaceship = game.addChild(new Spaceship());
spaceship.x = 1024;
spaceship.y = 2400;
lastSpaceshipX = spaceship.x;
lastSpaceshipY = spaceship.y;
// Touch controls
function handleMove(x, y, obj) {
	if (dragNode) {
		dragNode.x = Math.max(40, Math.min(2008, x));
		dragNode.y = Math.max(100, Math.min(2632, y));
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	dragNode = spaceship;
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Spawn functions
function spawnEnemy() {
	var enemy = new Enemy();
	enemy.x = Math.random() * 1800 + 124;
	enemy.y = -80;
	enemies.push(enemy);
	game.addChild(enemy);
}
function spawnAsteroid() {
	var asteroid = new Asteroid();
	asteroid.x = Math.random() * 1800 + 124;
	asteroid.y = -120;
	asteroids.push(asteroid);
	game.addChild(asteroid);
}
function spawnPowerUp() {
	var powerUp = new PowerUp();
	powerUp.x = Math.random() * 1800 + 124;
	powerUp.y = -40;
	powerUps.push(powerUp);
	game.addChild(powerUp);
}
// Game update loop
game.update = function () {
	// Update UI
	scoreText.setText('Score: ' + LK.getScore());
	healthText.setText('Health: ' + spaceship.health);
	// Auto-shoot
	spaceship.shoot();
	// Spawn management
	spawnTimer++;
	waveTimer++;
	if (waveTimer >= 1800) {
		// Every 30 seconds increase difficulty
		difficultyLevel++;
		waveTimer = 0;
	}
	var spawnRate = Math.max(30, 90 - difficultyLevel * 2);
	if (spawnTimer >= spawnRate) {
		if (Math.random() < 0.7) {
			spawnEnemy();
		}
		if (Math.random() < 0.4) {
			spawnAsteroid();
		}
		if (Math.random() < 0.05) {
			spawnPowerUp();
		}
		spawnTimer = 0;
	}
	// Check spaceship movement for collision detection
	var spaceshipMoved = spaceship.x !== lastSpaceshipX || spaceship.y !== lastSpaceshipY;
	lastSpaceshipX = spaceship.x;
	lastSpaceshipY = spaceship.y;
	// Update and check bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.y < -20) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet-enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				bullet.destroy();
				bullets.splice(i, 1);
				enemy.takeDamage();
				if (enemy.health <= 0) {
					enemies.splice(j, 1);
				}
				break;
			}
		}
	}
	// Update and check enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		if (bullet.y > 2752) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
			continue;
		}
		// Check enemy bullet-spaceship collision
		if (bullet.intersects(spaceship)) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
			spaceship.takeDamage();
		}
	}
	// Update and check enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		if (enemy.y > 2800) {
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		// Check enemy-spaceship collision
		if (enemy.intersects(spaceship)) {
			enemy.destroy();
			enemies.splice(i, 1);
			spaceship.takeDamage();
		}
	}
	// Update and check asteroids
	for (var i = asteroids.length - 1; i >= 0; i--) {
		var asteroid = asteroids[i];
		if (asteroid.y > 2800) {
			asteroid.destroy();
			asteroids.splice(i, 1);
			continue;
		}
		// Check asteroid-spaceship collision
		if (asteroid.intersects(spaceship)) {
			asteroid.destroy();
			asteroids.splice(i, 1);
			spaceship.takeDamage();
		}
		// Check bullet-asteroid collisions
		for (var j = bullets.length - 1; j >= 0; j--) {
			var bullet = bullets[j];
			if (bullet.intersects(asteroid)) {
				bullet.destroy();
				bullets.splice(j, 1);
				asteroid.destroy();
				asteroids.splice(i, 1);
				LK.setScore(LK.getScore() + 5);
				break;
			}
		}
	}
	// Update and check power-ups
	for (var i = powerUps.length - 1; i >= 0; i--) {
		var powerUp = powerUps[i];
		if (powerUp.y > 2800) {
			powerUp.destroy();
			powerUps.splice(i, 1);
			continue;
		}
		// Check power-up collection
		if (powerUp.intersects(spaceship)) {
			powerUp.destroy();
			powerUps.splice(i, 1);
			spaceship.applyPowerUp();
			LK.setScore(LK.getScore() + 25);
		}
	}
};
// Start background music
LK.playMusic('spaceMusic');