/**** 
* Classes
****/
// Thruster class
var Thruster = Container.expand(function () {
	var self = Container.call(this);
	var thrusterGraphics = self.createAsset('thruster', 'Thruster', 0.5, 0.5);
	self.update = function () {
		// Thruster update code here
	};
});
// Lander class
var Lander = Container.expand(function () {
	var self = Container.call(this);
	var landerGraphics = self.createAsset('lander', 'Player Lander', 0.5, 0.5);
	self.speedX = 0;
	self.speedY = 0;
	self.fuel = 1000;
	self.isThrusting = false;
	self.isLanding = false;
	self.update = function () {
		if (!self.isLanding) {
			self.x += self.speedX;
			self.y += self.speedY;
			if (self.isThrusting && self.fuel > 0) {
				self.speedY -= 0.2; // Thruster effect
				self.fuel -= 1;
				fuelTxt.setText(self.fuel.toString() + ' Fuel'); // Update fuel display
			} else {
				self.speedY += 0.05; // Gravity effect
			}
			ySpeedTxt.setText('Y Speed: ' + self.speedY.toFixed(2)); // Update Y Speed display
		}

		// Update thruster position and visibility
		thruster.x = self.x;
		thruster.y = self.y + self.height - 15; // Position thruster 20 pixels closer to the lander
		thruster.visible = self.isThrusting;
	};
	self.land = function () {
		self.isLanding = true;
		levelManager.incrementLevel();
	};
	self.refuel = function () {
		self.fuel = 1000;
		fuelTxt.setText(self.fuel.toString() + ' Fuel'); // Update fuel display
	};
});
// Platform class
var MovingPlatform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.createAsset('platform', 'Landing Platform', 0.5, 0.5);
	self.speedX = 0;
	self.startMoving = function (level) {
		if (level >= 3) {
			self.speedX = 2.8; // Reduced sideways speed by 30% for level 3
		}
	};
	self.update = function () {
		self.x += self.speedX;
		if (self.x > 1524 || self.x < 524) {
			self.speedX *= -1; // Change direction when hitting screen bounds
		}
	};
	self.checkLanding = function (lander) {
		if (lander.intersects(self)) {
			if (lander.speedY < 2) {
				return true;
			} else {
				isGameOver = true;
				LK.showGameOver();
				return false;
			}
		}
		return false;
	};
});
// Level class
var Level = Container.expand(function () {
	var self = Container.call(this);
	self.currentLevel = 1;
	var levelTxt = new Text2('Level: ' + self.currentLevel, {
		size: 50,
		fill: "#ffffff"
	});
	levelTxt.anchor.set(0, 0);
	LK.gui.topLeft.addChild(levelTxt);
	self.incrementLevel = function () {
		self.currentLevel += 1;
		levelTxt.setText('Level: ' + self.currentLevel);
		platform.startMoving(self.currentLevel);
	};
});
// Asteroid class
var Asteroid = Container.expand(function () {
	var self = Container.call(this);
	var asteroidGraphics = self.createAsset('asteroid', 'Asteroid', 0.5, 0.5);
	self.speedX = Math.random() * 2 - 1; // Random horizontal speed
	self.speedY = Math.random() * 3 + 1; // Random vertical speed
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;

		// Destroy asteroid if it goes off-screen
		if (self.y > 2732 || self.x < 0 || self.x > 2048) {
			self.destroy();
		}
	};
});

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

/**** 
* Game Code
****/
// Initialize lander
var lander = game.addChild(new Lander());
lander.x = 1024; // Start in the middle of the screen horizontally
lander.y = 100; // Start 100 pixels down from the top

// Initialize thruster
var thruster = game.addChild(new Thruster());
thruster.x = lander.x;
thruster.y = lander.y + lander.height + 5; // Position thruster 5 pixels below the lander
// Initialize level manager
var levelManager = game.addChild(new Level());

// Initialize moving platform
var platform = game.addChild(new MovingPlatform());
platform.x = 1024; // Center horizontally
platform.y = 2632; // Place at the bottom

// Game variables
var isGameOver = false;
var score = 0;
var asteroids = [];
var scoreTxt = new Text2(score.toString(), {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);

// Fuel display text
var fuelTxt = new Text2('1000 Fuel', {
	size: 50,
	fill: "#ffffff"
});
fuelTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(fuelTxt);

// Y Speed display text
var ySpeedTxt = new Text2('Y Speed: ' + lander.speedY.toFixed(2), {
	size: 50,
	fill: "#ffffff"
});
ySpeedTxt.anchor.set(1, 0);
ySpeedTxt.y = 50;
LK.gui.topRight.addChild(ySpeedTxt);

// Gravity display text
var gravityTxt = new Text2('Gravity: 0.05', {
	size: 50,
	fill: "#ffffff"
});
gravityTxt.anchor.set(1, 0);
gravityTxt.y = 100;
LK.gui.topRight.addChild(gravityTxt);

// Event listeners
game.on('down', function (obj) {
	lander.isThrusting = true;
});
game.on('up', function (obj) {
	lander.isThrusting = false;
});

// Game tick update
LK.on('tick', function () {
	if (!isGameOver) {
		// Update all asteroids
		asteroids = game.children.filter(function (child) {
			return child instanceof Asteroid;
		});
		lander.update();
		platform.update(); // Update platform position

		// Check for landing
		if (platform.checkLanding(lander)) {
			lander.land();
			score += 1;
			scoreTxt.setText(score.toString());
			lander.refuel();
			lander.x = 1024;
			lander.y = 100;
			lander.speedY = 0;
			lander.isLanding = false;
		}
		// Check for collision with asteroids and game over conditions
		for (var i = 0; i < asteroids.length; i++) {
			if (lander.intersects(asteroids[i])) {
				isGameOver = true;
				LK.showGameOver();
				break;
			}
		}
		// Check if lander is off-screen for game over
		if (lander.y > 2732) {
			isGameOver = true;
			LK.showGameOver();
		}

		// Asteroid spawning
		if (LK.ticks % 120 == 0) {
			// Spawn an asteroid every 2 seconds
			var newAsteroid = new Asteroid();
			var safeZoneRadius = 200;
			var landerSpawnX = 1024;
			var minDistanceFromLander;
			do {
				newAsteroid.x = Math.random() * 2048; // Random horizontal start position
				minDistanceFromLander = Math.abs(newAsteroid.x - landerSpawnX);
			} while (minDistanceFromLander <= safeZoneRadius);
			newAsteroid.y = -50; // Start just above the screen
			game.addChild(newAsteroid);
		}

		// Update all asteroids
		asteroids = game.children.filter(function (child) {
			return child instanceof Asteroid;
		});
		for (var i = 0; i < asteroids.length; i++) {
			asteroids[i].update();
		}

		// Check for game over conditions
		if (lander.y > 2732) {
			isGameOver = true;
			LK.showGameOver();
		}
	}
});