/**** 
* Classes
****/ 
// Define a class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -50) {
			self.destroy();
		}
	};
});
//<Assets used in the game will automatically appear here>
// Define a class for the player character
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.jumpHeight = 40;
	self.isJumping = false;
	self.velocityY = 0;
	self.update = function () {
		if (self.isJumping) {
			self.y += self.velocityY;
			self.velocityY += 0.7; // Decreased gravity effect by 30%
			if (self.y >= 2732 / 2) {
				// Ground level
				self.y = 2732 / 2;
				self.isJumping = false;
				self.velocityY = 0;
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.velocityY = -self.jumpHeight;
		}
	};
});
// Define a class for star bullets
var Star = Container.expand(function () {
	var self = Container.call(this);
	// Create a yellow star shape using the built-in shape feature
	var starGraphics = self.attachAsset('star', {
		width: 50,
		height: 50,
		color: 0xffff00,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	// Store the last position for collision detection
	self.lastY = self.y;
	self.lastX = self.x;
	self.update = function () {
		// Store last position before update
		self.lastY = self.y;
		self.lastX = self.x;
		// Move the star forward
		self.x += self.speed;
		// Remove if it goes off-screen
		if (self.x > 2048 + 50) {
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Sky blue background
});

/**** 
* Game Code
****/ 
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
}));
background.x = 0;
background.y = 0;
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 / 2;
// Initialize enemies
var enemies = [];
var enemySpawnInterval = 100;
var enemySpawnCounter = 0;
// Create a new Text2 object to display the score
var scoreText = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
// Add the score text to the game GUI at the top center of the screen
LK.gui.top.addChild(scoreText);
scoreText.x = 2048 / 2;
scoreText.y = 0;
// Handle game updates
// Array to store bullets
var stars = [];
var shootTimer = 0;
game.update = function () {
	player.update();
	// Removed auto-shooting to only allow double tap shooting
	// Update stars
	for (var i = stars.length - 1; i >= 0; i--) {
		stars[i].update();
		// Remove stars that are destroyed
		if (!stars[i].parent) {
			stars.splice(i, 1);
			continue;
		}
		// Check for star-enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (stars[i] && enemies[j] && stars[i].intersects(enemies[j])) {
				// Remove the enemy and the star
				enemies[j].destroy();
				enemies.splice(j, 1);
				stars[i].destroy();
				stars.splice(i, 1);
				// Update score
				LK.setScore(LK.getScore() + 1);
				scoreText.setText(LK.getScore());
				break;
			}
		}
	}
	// Spawn enemies
	enemySpawnCounter++;
	if (enemySpawnCounter >= enemySpawnInterval) {
		var enemy = new Enemy();
		enemy.x = 2048;
		enemy.y = 2732 / 2;
		enemies.push(enemy);
		game.addChild(enemy);
		// Randomize the spawn interval for the next enemy
		enemySpawnInterval = Math.floor(Math.random() * 150) + 50;
		enemySpawnCounter = 0;
	}
	// Update enemies
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j].update();
		if (player.intersects(enemies[j])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		} else if (player.x > enemies[j].x && !enemies[j].passed) {
			enemies[j].passed = true;
			LK.setScore(LK.getScore() + 1);
			scoreText.setText(LK.getScore());
		}
	}
};
// Handle player interaction
var dragNode = null;
// Function to handle movement
function handleMove(x, y, obj) {
	if (dragNode) {
		dragNode.x = x;
		// Keep the player at the same vertical position
		dragNode.y = 2732 / 2;
	}
}
// Variables for double tap detection
var lastTapTime = 0;
var doubleTapDelay = 300; // milliseconds
// Start tracking player movement on touch down and detect single/double taps
game.down = function (x, y, obj) {
	var currentTime = Date.now();
	var tapLength = currentTime - lastTapTime;
	// Check if it's a double tap
	if (tapLength < doubleTapDelay && tapLength > 0) {
		// Create and shoot a star on double tap
		var star = new Star();
		star.x = player.x + 100;
		star.y = player.y;
		stars.push(star);
		game.addChild(star);
		// Play shooting sound
		LK.getSound('shoot').play();
	} else {
		// Single tap - make the player jump
		player.jump();
	}
	// Update the last tap time
	lastTapTime = currentTime;
	// Handle regular movement
	dragNode = player;
	handleMove(x, y, obj);
};
// Update player position during movement
game.move = handleMove;
// Stop tracking player movement on touch up
game.up = function (x, y, obj) {
	dragNode = null;
};

===================================================================
--- original.js
+++ change.js
@@ -177,9 +177,9 @@
 }
 // Variables for double tap detection
 var lastTapTime = 0;
 var doubleTapDelay = 300; // milliseconds
-// Start tracking player movement on touch down and detect double taps
+// Start tracking player movement on touch down and detect single/double taps
 game.down = function (x, y, obj) {
 	var currentTime = Date.now();
 	var tapLength = currentTime - lastTapTime;
 	// Check if it's a double tap
@@ -191,8 +191,11 @@
 		stars.push(star);
 		game.addChild(star);
 		// Play shooting sound
 		LK.getSound('shoot').play();
+	} else {
+		// Single tap - make the player jump
+		player.jump();
 	}
 	// Update the last tap time
 	lastTapTime = currentTime;
 	// Handle regular movement