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

/**** 
* Classes
****/ 
var Meteor = Container.expand(function () {
	var self = Container.call(this);
	var meteorGraphics = self.attachAsset('meteor', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = (Math.random() - 0.5) * 4; // Random horizontal drift
	self.speedY = Math.random() * 3 + 2; // Downward speed
	self.rotationSpeed = (Math.random() - 0.5) * 0.2;
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.rotation += self.rotationSpeed;
	};
	return self;
});
var Particle = Container.expand(function () {
	var self = Container.call(this);
	var particleGraphics = self.attachAsset('particle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = (Math.random() - 0.5) * 10;
	self.velocityY = (Math.random() - 0.5) * 10;
	self.life = 1.0;
	self.decay = Math.random() * 0.02 + 0.01;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		self.life -= self.decay;
		self.alpha = self.life;
		if (self.life <= 0) {
			self.destroy();
		}
	};
	return self;
});
var Shield = Container.expand(function () {
	var self = Container.call(this);
	var shieldGraphics = self.attachAsset('shield', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Glow effect
	shieldGraphics.alpha = 0.9;
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x0a0a20
});

/**** 
* Game Code
****/ 
game.setBackgroundColor(0x0a0a20);
// Game variables
var meteors = [];
var particles = [];
var shield;
var spaceStation;
var meteorSpawnTimer = 0;
var meteorSpawnDelay = 120; // Start with 2 seconds at 60fps
var waveNumber = 1;
var consecutiveHits = 0;
var screenShakeTimer = 0;
var gameStarted = false;
// UI Elements
var scoreTxt = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var waveTxt = new Text2('Wave 1', {
	size: 60,
	fill: 0x00D9FF
});
waveTxt.anchor.set(0, 0);
waveTxt.x = 100;
waveTxt.y = 150;
LK.gui.topLeft.addChild(waveTxt);
// Create space station
spaceStation = game.addChild(LK.getAsset('spaceStation', {
	anchorX: 0.5,
	anchorY: 1.0
}));
spaceStation.x = 2048 / 2;
spaceStation.y = 2732 - 50;
// Create shield
shield = game.addChild(new Shield());
shield.x = 2048 / 2;
shield.y = 2732 - 400;
// Screen shake effect
function applyScreenShake() {
	if (screenShakeTimer > 0) {
		game.x = (Math.random() - 0.5) * screenShakeTimer * 2;
		game.y = (Math.random() - 0.5) * screenShakeTimer * 2;
		screenShakeTimer--;
	} else {
		game.x = 0;
		game.y = 0;
	}
}
// Create explosion particles
function createExplosion(x, y, count) {
	for (var i = 0; i < count; i++) {
		var particle = new Particle();
		particle.x = x + (Math.random() - 0.5) * 50;
		particle.y = y + (Math.random() - 0.5) * 50;
		particles.push(particle);
		game.addChild(particle);
	}
}
// Spawn meteor
function spawnMeteor() {
	var meteor = new Meteor();
	meteor.x = Math.random() * 2048;
	meteor.y = -100;
	// Increase speed based on wave
	meteor.speedY += waveNumber * 0.5;
	meteors.push(meteor);
	game.addChild(meteor);
}
// Handle dragging
var dragOffset = 0;
function handleMove(x, y, obj) {
	if (gameStarted) {
		shield.x = x;
		// Keep shield within screen bounds
		if (shield.x < 150) shield.x = 150;
		if (shield.x > 2048 - 150) shield.x = 2048 - 150;
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	if (!gameStarted) {
		gameStarted = true;
	}
	dragOffset = shield.x - x;
	handleMove(x + dragOffset, y, obj);
};
game.up = function (x, y, obj) {
	// Nothing specific on release
};
// Main game update loop
game.update = function () {
	applyScreenShake();
	if (!gameStarted) {
		return;
	}
	// Spawn meteors
	meteorSpawnTimer++;
	if (meteorSpawnTimer >= meteorSpawnDelay) {
		spawnMeteor();
		meteorSpawnTimer = 0;
		// Gradually increase spawn rate
		if (meteorSpawnDelay > 30) {
			meteorSpawnDelay -= 0.5;
		}
	}
	// Update meteors
	for (var i = meteors.length - 1; i >= 0; i--) {
		var meteor = meteors[i];
		if (meteor.lastY === undefined) meteor.lastY = meteor.y;
		if (meteor.lastIntersectingShield === undefined) meteor.lastIntersectingShield = false;
		if (meteor.lastIntersectingStation === undefined) meteor.lastIntersectingStation = false;
		// Check collision with shield
		var currentIntersectingShield = meteor.intersects(shield);
		if (!meteor.lastIntersectingShield && currentIntersectingShield) {
			// Meteor hit shield - deflect it
			meteor.speedY = -Math.abs(meteor.speedY) * 0.8; // Bounce up
			meteor.speedX += (Math.random() - 0.5) * 6; // Add random horizontal velocity
			// Score and effects
			consecutiveHits++;
			var points = 10 + consecutiveHits * 5;
			LK.setScore(LK.getScore() + points);
			scoreTxt.setText(LK.getScore());
			// Visual effects
			LK.effects.flashScreen(0x00d9ff, 200);
			screenShakeTimer = 5;
			createExplosion(meteor.x, meteor.y, 8);
			LK.getSound('deflect').play();
		}
		// Check collision with space station
		var currentIntersectingStation = meteor.intersects(spaceStation);
		if (!meteor.lastIntersectingStation && currentIntersectingStation) {
			// Game Over
			LK.effects.flashScreen(0xff0000, 1500);
			screenShakeTimer = 20;
			createExplosion(meteor.x, meteor.y, 15);
			LK.getSound('explode').play();
			LK.showGameOver();
			return;
		}
		// Remove meteors that are off screen
		if (meteor.y > 2732 + 100 || meteor.y < -200) {
			if (meteor.y > 2732 + 100) {
				consecutiveHits = 0; // Reset combo if meteor reaches bottom
			}
			meteor.destroy();
			meteors.splice(i, 1);
			continue;
		}
		// Remove meteors that are too far horizontally
		if (meteor.x < -200 || meteor.x > 2048 + 200) {
			meteor.destroy();
			meteors.splice(i, 1);
			continue;
		}
		meteor.lastY = meteor.y;
		meteor.lastIntersectingShield = currentIntersectingShield;
		meteor.lastIntersectingStation = currentIntersectingStation;
	}
	// Update particles
	for (var j = particles.length - 1; j >= 0; j--) {
		var particle = particles[j];
		if (particle.life <= 0) {
			particles.splice(j, 1);
		}
	}
	// Wave progression
	if (LK.ticks % 1800 === 0 && LK.ticks > 0) {
		// Every 30 seconds
		waveNumber++;
		waveTxt.setText('Wave ' + waveNumber);
		// Flash wave indicator
		tween(waveTxt, {
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 300,
			easing: tween.easeOut
		});
		tween(waveTxt, {
			scaleX: 1.0,
			scaleY: 1.0
		}, {
			duration: 300,
			easing: tween.easeIn
		});
	}
	// Shield glow effect
	var glowIntensity = 0.7 + Math.sin(LK.ticks * 0.1) * 0.2;
	shield.alpha = glowIntensity;
};