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

/**** 
* Classes
****/ 
var Balloon = Container.expand(function () {
	var self = Container.call(this);
	var balloonGraphics = self.attachAsset('balloon', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityY = 0;
	self.velocityX = 0;
	self.gravity = 0.8;
	self.jumpForce = -15;
	self.maxFallSpeed = 12;
	self.moveSpeed = 8;
	self.maxMoveSpeed = 12;
	self.friction = 0.95;
	self.isPopped = false;
	self.jump = function () {
		if (!self.isPopped) {
			self.velocityY = self.jumpForce;
			LK.getSound('jump').play();
			// Balloon inflation animation on jump
			tween(balloonGraphics, {
				scaleX: 1.2,
				scaleY: 1.2
			}, {
				duration: 100,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					tween(balloonGraphics, {
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 200,
						easing: tween.easeIn
					});
				}
			});
		}
	};
	self.pop = function () {
		if (!self.isPopped) {
			self.isPopped = true;
			LK.getSound('pop').play();
			// Pop animation
			tween(balloonGraphics, {
				scaleX: 0.1,
				scaleY: 0.1,
				alpha: 0
			}, {
				duration: 300,
				easing: tween.easeIn
			});
		}
	};
	self.moveLeft = function () {
		if (!self.isPopped) {
			self.velocityX -= self.moveSpeed;
			if (self.velocityX < -self.maxMoveSpeed) {
				self.velocityX = -self.maxMoveSpeed;
			}
		}
	};
	self.moveRight = function () {
		if (!self.isPopped) {
			self.velocityX += self.moveSpeed;
			if (self.velocityX > self.maxMoveSpeed) {
				self.velocityX = self.maxMoveSpeed;
			}
		}
	};
	self.update = function () {
		if (!self.isPopped) {
			// Apply gravity
			self.velocityY += self.gravity;
			// Limit fall speed
			if (self.velocityY > self.maxFallSpeed) {
				self.velocityY = self.maxFallSpeed;
			}
			// Apply friction to horizontal movement
			self.velocityX *= self.friction;
			// Update position
			self.x += self.velocityX;
			self.y += self.velocityY;
			// Keep balloon within screen bounds
			if (self.x < 60) {
				self.x = 60;
				self.velocityX = 0;
			} else if (self.x > 2048 - 60) {
				self.x = 2048 - 60;
				self.velocityX = 0;
			}
			// Subtle floating animation when not jumping
			if (self.velocityY > 0) {
				var deflationScale = 1.0 - self.velocityY / self.maxFallSpeed * 0.1;
				balloonGraphics.scaleX = deflationScale;
				balloonGraphics.scaleY = deflationScale;
			}
		}
	};
	return self;
});
var Ground = Container.expand(function () {
	var self = Container.call(this);
	var groundGraphics = self.attachAsset('ground', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb
});

/**** 
* Game Code
****/ 
// Game variables
var balloon;
var ground;
var gameStarted = false;
var survivalTime = 0;
var difficultyMultiplier = 1;
// UI Elements
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var instructionTxt = new Text2('TAP TO JUMP!\nDRAG TO MOVE!', {
	size: 50,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
instructionTxt.x = 2048 / 2;
instructionTxt.y = 1000;
game.addChild(instructionTxt);
// Create balloon
balloon = new Balloon();
balloon.x = 2048 / 2;
balloon.y = 1366; // Center vertically
game.addChild(balloon);
// Create ground
ground = new Ground();
ground.x = 0;
ground.y = 2732 - 200; // At bottom of screen
game.addChild(ground);
// Start background music
LK.playMusic('atmosphere');
// Track last collision state
var lastColliding = false;
// Track touch/drag state
var isDragging = false;
var lastTouchX = 0;
// Game input handling
game.down = function (x, y, obj) {
	if (!gameStarted) {
		gameStarted = true;
		instructionTxt.alpha = 0;
	}
	if (!balloon.isPopped) {
		balloon.jump();
		isDragging = true;
		lastTouchX = x;
	}
};
game.up = function (x, y, obj) {
	isDragging = false;
};
game.move = function (x, y, obj) {
	if (isDragging && !balloon.isPopped) {
		var deltaX = x - lastTouchX;
		if (deltaX > 10) {
			balloon.moveRight();
		} else if (deltaX < -10) {
			balloon.moveLeft();
		}
		lastTouchX = x;
	}
};
// Main game update loop
game.update = function () {
	if (gameStarted && !balloon.isPopped) {
		// Update survival time and score
		survivalTime += 1;
		var score = Math.floor(survivalTime / 60); // Score based on seconds survived
		LK.setScore(score);
		scoreTxt.setText(score);
		// Increase difficulty over time
		if (survivalTime % 1800 === 0) {
			// Every 30 seconds
			difficultyMultiplier += 0.1;
			balloon.gravity = 0.8 * difficultyMultiplier;
			balloon.maxFallSpeed = 12 * difficultyMultiplier;
		}
		// Check collision with ground
		var currentColliding = balloon.intersects(ground);
		if (!lastColliding && currentColliding) {
			// Balloon just hit the ground
			balloon.pop();
			// Flash screen red and show game over after a delay
			LK.effects.flashScreen(0xff0000, 500);
			LK.setTimeout(function () {
				LK.showGameOver();
			}, 800);
		}
		lastColliding = currentColliding;
		// Keep balloon on screen (prevent going too high)
		if (balloon.y < 100) {
			balloon.y = 100;
			balloon.velocityY = 0;
		}
	}
	// Fade out instruction text when game starts
	if (gameStarted && instructionTxt.alpha > 0) {
		instructionTxt.alpha -= 0.02;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -155,8 +155,10 @@
 ground = new Ground();
 ground.x = 0;
 ground.y = 2732 - 200; // At bottom of screen
 game.addChild(ground);
+// Start background music
+LK.playMusic('atmosphere');
 // Track last collision state
 var lastColliding = false;
 // Track touch/drag state
 var isDragging = false;