/**** 
* Classes
****/ 
// Coin class
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.move = function () {
		if (self.spawnDirection === 'right') {
			self.x -= coinSpeed;
		} else {
			self.x += coinSpeed;
		}
		// Destroy coin when it moves off screen
		if (self.x < -100 || self.x > 2048 + 100) {
			self.destroy();
		}
	};
});
// Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	// Determine scaleX based on spawnDirection and attach enemy graphics with correct scaleX
	var scaleX = self.spawnDirection === 'right' ? 1 : -1;
	var enemyGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: scaleX
	});
	self.acceleration = 0;
	self.move = function () {
		self.acceleration += 0.2;
		if (self.spawnDirection === 'right') {
			self.x -= enemySpeed + self.acceleration;
		} else {
			self.x += enemySpeed + self.acceleration;
		}
		// Destroy enemy when it moves off screen and remove it from the enemies array
		if (self.x < -100 || self.x > 2048 + 100) {
			self.destroy();
			var index = enemies.indexOf(self);
			if (index > -1) {
				enemies.splice(index, 1);
			}
			// Spawn a new enemy if the current number of enemies is less than the maximum number of enemies
			if (enemies.length < maxEnemies) {
				spawnEnemy();
			}
		}
	};
});
// Obstacle class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = obstacleSpeed;
	self.move = function () {
		self.x += self.speed;
		// Destroy obstacle when it moves off screen
		if (self.x < -100) {
			self.destroy();
		}
	};
});
// Assets will be automatically generated based on usage in the code.
// Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.gravity = -1; // Start with gravity pulling upwards
	self.flipGravity = function () {
		self.gravity *= -1;
	};
	self.touchingEdge = false;
	self.update = function () {
		self.y += playerSpeed * self.gravity;
		// Prevent player from going out of bounds
		if (self.y - playerGraphics.height / 2 <= 0) {
			self.y = playerGraphics.height / 2;
			if (self.gravity == -1 && !self.touchingEdge) {
				self.touchingEdge = true;
				LK.setScore(LK.getScore() + 1);
				scoreTxt.setText(LK.getScore().toString());
				maxEnemies = Math.floor(LK.getScore() / 10);
				if (enemies.length < maxEnemies) {
					spawnEnemy();
				}
			}
		} else if (self.y + playerGraphics.height / 2 >= 2732) {
			self.y = 2732 - playerGraphics.height / 2;
			if (self.gravity == 1 && !self.touchingEdge) {
				self.touchingEdge = true;
				LK.setScore(LK.getScore() + 1);
				scoreTxt.setText(LK.getScore().toString());
				maxEnemies = Math.floor(LK.getScore() / 10);
				if (enemies.length < maxEnemies) {
					spawnEnemy();
				}
			}
		} else {
			self.touchingEdge = false;
		}
	};
});

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

/**** 
* Game Code
****/ 
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366
}));
// Game Variables
// Assets will be automatically generated based on usage in the code.
var playerGraphics;
var player;
var playerSpeed = 80;
var score = 0;
var scoreTxt;
var obstacles = []; // Array to keep track of obstacles
var obstacleSpeed = -10;
var coins = []; // Initialize coins array
var coinSpeed = 10;
var coinSpawnDirection = 'right'; // Initialize coin spawn direction
var enemies = []; // Initialize enemies array
var maxEnemies = 0; // Initialize maximum number of enemies that can be spawned
var enemySpawnDirection = 'left'; // Initialize enemy spawn direction
var enemySpeed = 5; // Define enemy speed
// Initialize Player
player = game.addChild(new Player());
player.x = 1024; // Center horizontally
player.y = 1366; // Center vertically
// Initialize Score Display
scoreTxt = new Text2(score.toString(), {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create obstacles and coins at intervals
function spawnEnemy() {
	// Check if the score is less than 10
	if (LK.getScore() < 10) {
		return;
	}
	// Determine the number of enemies to spawn based on the player's score
	var numEnemies = Math.floor(LK.getScore() / 10);
	// Determine the spawn side based on the last spawn side
	var spawnSide = enemySpawnDirection;
	// Alternate the spawn side
	enemySpawnDirection = enemySpawnDirection === 'right' ? 'left' : 'right';
	// Spawn enemies if the current number of enemies is less than the maximum number of enemies
	if (enemies.length < numEnemies) {
		var enemy = new Enemy();
		// Determine the spawn side based on the last spawn side
		var spawnSide = enemySpawnDirection === 'right' ? 'left' : 'right';
		enemy.spawnDirection = spawnSide;
		enemy.x = spawnSide === 'right' ? 2048 : 0;
		enemy.y = Math.random() * (2732 - 800) + 400; // Random height with 200 pixel padding at the top and bottom
		enemy.acceleration = 0;
		enemies.push(enemy);
		game.addChild(enemy);
	}
}
var enemyTimer = LK.setInterval(spawnEnemy, 1000); // Create an enemy every 1 second
var coinTimer = LK.setInterval(function () {
	// Create a coin
	var coin = new Coin();
	coin.spawnDirection = coinSpawnDirection;
	// Spawn coin from right or left alternately
	if (coinSpawnDirection === 'right') {
		coin.x = 2048;
	} else {
		coin.x = 0;
	}
	// coin speed is set in the move function of the Coin class
	coin.y = Math.random() * (2732 - 600) + 300; // Random height with 200 pixel padding at the top and bottom
	coins.push(coin);
	game.addChild(coin);
	// Switch coin spawn direction
	coinSpawnDirection = coinSpawnDirection === 'right' ? 'left' : 'right';
}, 200); // Create a coin every 200 milliseconds
// Listen for touch events to flip gravity
game.on('down', function () {
	if (player.touchingEdge) {
		player.flipGravity();
	}
});
// Update game state on each tick
LK.on('tick', function () {
	player.update();
	obstacles.forEach(function (obstacle) {
		obstacle.move();
		// Check for collision with player
		if (player.intersects(obstacle)) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	});
	// Update coins and remove destroyed coins
	coins.forEach(function (coin, index) {
		coin.move();
		// Check for collision with player
		if (player.intersects(coin)) {
			// Increase score by 1
			LK.setScore(LK.getScore() + 1);
			// Update score text
			scoreTxt.setText(LK.getScore().toString());
			// Destroy the coin
			coin.destroy();
			// Remove the coin from the coins array
			coins.splice(index, 1);
		}
	});
	// Update enemies and remove destroyed enemies
	enemies.forEach(function (enemy, index) {
		enemy.move();
		// Check for collision with player
		if (player.intersects(enemy)) {
			// Flash screen red for 1 second (1000ms) to show we are dead.
			LK.effects.flashScreen(0xff0000, 1000);
			// Show game over. The game will be automatically paused while game over is showing.
			LK.showGameOver();
			// Destroy the enemy
			enemy.destroy();
			// Remove the enemy from the enemies array
			enemies.splice(index, 1);
			// Spawn a new enemy if the current number of enemies is less than the maximum number of enemies
			if (enemies.length < maxEnemies) {
				spawnEnemy();
			}
		}
	});
	// Remove obstacles that have been destroyed
	obstacles = obstacles.filter(function (obstacle) {
		return !obstacle._destroyed;
	});
});