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

/**** 
* Classes
****/ 
var Ball = Container.expand(function (size, speedX, speedY) {
	var self = Container.call(this);
	self.size = size || 'large';
	self.speedX = speedX || Math.random() * 10 - 5;
	self.speedY = speedY || Math.random() * 5 + 2;
	var assetName = self.size + 'Ball';
	var ballGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.radius = ballGraphics.width / 2;
	self.update = function () {
		// Move the ball
		self.x += self.speedX;
		self.y += self.speedY;
		// Bounce off walls
		if (self.x < self.radius || self.x > 2048 - self.radius) {
			self.speedX *= -1;
			// Adjust position to prevent sticking to walls
			if (self.x < self.radius) {
				self.x = self.radius;
			}
			if (self.x > 2048 - self.radius) {
				self.x = 2048 - self.radius;
			}
		}
		// Bounce off top
		if (self.y < self.radius) {
			self.speedY *= -1;
			self.y = self.radius;
		}
		// Ball bounces off the ground if it's a large or medium ball
		if ((self.size === 'large' || self.size === 'medium') && self.y > 2732 - self.radius) {
			self.speedY *= -1;
			// Adjust position to prevent sticking to the ground
			self.y = 2732 - self.radius;
		}
		// Apply gravity
		self.speedY += 0.2;
	};
	self.split = function () {
		// Create two smaller balls when hit
		var nextSize;
		if (self.size === 'large') {
			nextSize = 'medium';
			score += 100;
		} else if (self.size === 'medium') {
			nextSize = 'small';
			score += 200;
		} else {
			// Small balls just disappear
			score += 300;
			return [];
		}
		var newBalls = [];
		// Create two smaller balls with slightly altered velocities
		for (var i = 0; i < 2; i++) {
			var speedMultiplier = i === 0 ? 1 : -1;
			var newBall = new Ball(nextSize, self.speedX * 1.2 * speedMultiplier, self.speedY * 0.8);
			newBall.x = self.x;
			newBall.y = self.y;
			newBalls.push(newBall);
		}
		return newBalls;
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
		// Remove bullet if it goes off-screen
		if (self.y < -50) {
			self.markForRemoval = true;
		}
	};
	return self;
});
var Cannon = Container.expand(function () {
	var self = Container.call(this);
	// Base of the cannon
	var base = self.attachAsset('cannonBase', {
		anchorX: 0.5,
		anchorY: 0.5,
		y: 20
	});
	// The cannon barrel
	var barrel = self.attachAsset('cannon', {
		anchorX: 0.5,
		anchorY: 1.0,
		y: 0
	});
	// Fire rate control
	self.lastFired = 0;
	self.fireRate = 500; // ms between shots
	// Cannon shoots automatically
	self.tryToFire = function () {
		var currentTime = Date.now();
		if (currentTime - self.lastFired > self.fireRate) {
			self.fire();
			self.lastFired = currentTime;
		}
	};
	self.fire = function () {
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y - barrel.height;
		game.addChild(bullet);
		bullets.push(bullet);
		LK.getSound('shoot').play();
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x202060
});

/**** 
* Game Code
****/ 
// Attach background image
var background = LK.getAsset('background', {
	anchorX: 0.5,
	anchorY: 0.5
});
background.x = 2048 / 2;
background.y = 2732 / 2;
game.addChild(background);
var balls = [];
var bullets = [];
var score = 0;
var isGameOver = false;
var lastBallSpawnTime = 0;
var ballSpawnInterval = 3000; // ms between ball spawns
var timeSinceLastHit = 0;
var comboMultiplier = 1;
var comboTimeout = 1000; // ms to maintain combo
// Create cannon
var cannon = new Cannon();
cannon.x = 2048 / 2;
cannon.y = 2732 - 100;
game.addChild(cannon);
// Create score display
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
LK.gui.topRight.addChild(scoreTxt);
scoreTxt.x = -scoreTxt.width - 20;
scoreTxt.y = 20;
// Create multiplier display
var multiplierTxt = new Text2('x1', {
	size: 60,
	fill: 0xFFCC00
});
multiplierTxt.anchor.set(0, 0);
LK.gui.topRight.addChild(multiplierTxt);
multiplierTxt.x = -multiplierTxt.width - 20;
multiplierTxt.y = scoreTxt.height + 30;
// Handle ball spawning
function spawnBall() {
	var ballColorSequence = ['largeBall', 'largeBallYellow', 'largeBallOrangeYellow'];
	var ballColorIndex = balls.length % ballColorSequence.length;
	var ball = new Ball('large', undefined, undefined);
	ball.attachAsset(ballColorSequence[ballColorIndex], {
		anchorX: 0.5,
		anchorY: 0.5
	});
	ball.x = Math.random() * (2048 - 200) + 100; // Avoid spawning too close to edges
	ball.y = -100;
	game.addChild(ball);
	balls.push(ball);
}
// Cannon movement
var isDragging = false;
game.down = function (x, y, obj) {
	isDragging = true;
	moveCannonTo(x);
};
game.move = function (x, y, obj) {
	if (isDragging) {
		moveCannonTo(x);
	}
};
game.up = function (x, y, obj) {
	isDragging = false;
};
function moveCannonTo(x) {
	// Constrain cannon position to screen boundaries
	var minX = 100;
	var maxX = 2048 - 100;
	cannon.x = Math.max(minX, Math.min(maxX, x));
}
// Update game state
game.update = function () {
	if (isGameOver) {
		return;
	}
	// Update combo multiplier
	timeSinceLastHit += 16.67; // Approximate ms per frame at 60fps
	if (timeSinceLastHit > comboTimeout && comboMultiplier > 1) {
		comboMultiplier = 1;
		updateMultiplierDisplay();
	}
	// Spawn new balls periodically
	var currentTime = Date.now();
	if (currentTime - lastBallSpawnTime > ballSpawnInterval) {
		spawnBall();
		lastBallSpawnTime = currentTime;
		// Gradually decrease spawn interval to increase difficulty
		ballSpawnInterval = Math.max(1000, ballSpawnInterval - 50);
	}
	// Automatically fire cannon
	cannon.tryToFire();
	// Update all bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		// Check for collisions with balls
		for (var j = balls.length - 1; j >= 0; j--) {
			var ball = balls[j];
			// Simple distance-based collision detection
			var dx = bullet.x - ball.x;
			var dy = bullet.y - ball.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < ball.radius) {
				// Hit detected
				LK.getSound('hit').play();
				// Update combo system
				timeSinceLastHit = 0;
				comboMultiplier = Math.min(10, comboMultiplier + 1);
				updateMultiplierDisplay();
				// Create new smaller balls
				var newBalls = ball.split();
				for (var k = 0; k < newBalls.length; k++) {
					game.addChild(newBalls[k]);
					balls.push(newBalls[k]);
				}
				// Remove the current ball and bullet
				game.removeChild(ball);
				balls.splice(j, 1);
				game.removeChild(bullet);
				bullets.splice(i, 1);
				// Update score
				updateScore();
				// Break out of inner loop since bullet is gone
				break;
			}
		}
		// Remove bullets marked for removal
		if (bullet.markForRemoval) {
			game.removeChild(bullet);
			bullets.splice(i, 1);
		}
	}
	// Update all balls
	for (var i = balls.length - 1; i >= 0; i--) {
		var ball = balls[i];
		// Check collision with cannon
		var dx = ball.x - cannon.x;
		var dy = ball.y - cannon.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < ball.radius + 75) {
			// Approximate cannon collision radius
			gameOver();
			break;
		}
		// Remove balls marked for removal
		if (ball.markForRemoval) {
			game.removeChild(ball);
			balls.splice(i, 1);
		}
	}
};
function updateScore() {
	// Apply the multiplier to score updates
	score += 50 * comboMultiplier;
	scoreTxt.setText('Score: ' + score);
	// Update the internal LK score for leaderboards
	LK.setScore(score);
}
function updateMultiplierDisplay() {
	multiplierTxt.setText('x' + comboMultiplier);
	// Change color based on multiplier level
	if (comboMultiplier > 5) {
		multiplierTxt.setStyle({
			fill: 0xFF3333
		}); // Red for high multiplier
	} else if (comboMultiplier > 2) {
		multiplierTxt.setStyle({
			fill: 0xFFAA00
		}); // Orange for medium multiplier
	} else {
		multiplierTxt.setStyle({
			fill: 0xFFCC00
		}); // Default yellow
	}
}
function gameOver() {
	if (isGameOver) {
		return;
	}
	isGameOver = true;
	LK.effects.flashScreen(0xff0000, 500);
	LK.showGameOver();
}
// Start background music
LK.playMusic('gameMusic', {
	fade: {
		start: 0,
		end: 0.7,
		duration: 1000
	}
});

===================================================================
--- original.js
+++ change.js
@@ -37,10 +37,10 @@
 		if (self.y < self.radius) {
 			self.speedY *= -1;
 			self.y = self.radius;
 		}
-		// Ball bounces off the ground only if it's a large ball
-		if (self.size === 'large' && self.y > 2732 - self.radius) {
+		// Ball bounces off the ground if it's a large or medium ball
+		if ((self.size === 'large' || self.size === 'medium') && self.y > 2732 - self.radius) {
 			self.speedY *= -1;
 			// Adjust position to prevent sticking to the ground
 			self.y = 2732 - self.radius;
 		}