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

/**** 
* Classes
****/ 
var Basketball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = self.attachAsset('basketball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set z-index to render behind net and hoop
	ballGraphics.zIndex = -1;
	self.velocityX = 0;
	self.velocityY = 0;
	self.gravity = 0.5;
	self.bounceDecay = 0.7;
	self.hasScored = false;
	self.isActive = true;
	self.update = function () {
		if (!self.isActive) return;
		self.velocityY += self.gravity;
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Check hoop collision
		if (hoop) {
			var hoopX = hoop.x;
			var hoopY = hoop.y - 350; // Adjust for hoop position within container
			var relativeX = self.x - hoopX;
			var relativeY = self.y - hoopY;
			// Check if ball is hitting the hoop rim
			if (relativeX >= -125 && relativeX <= 125 && relativeY >= -25 && relativeY <= 25) {
				// Determine which side of the hoop was hit
				if (Math.abs(relativeX) > 90) {
					// Hit the sides of the rim
					self.velocityX = -self.velocityX * self.bounceDecay;
					if (relativeX < 0) {
						self.x = hoopX - 125;
					} else {
						self.x = hoopX + 125;
					}
					LK.getSound('bounce').play();
				} else if (relativeY >= -25 && relativeY <= 0 && self.velocityY > 0) {
					// Hit the top of the rim (bouncing up)
					self.velocityY = -Math.abs(self.velocityY) * self.bounceDecay;
					self.y = hoopY - 25;
					self.velocityX *= 0.8; // Reduce horizontal velocity slightly
					LK.getSound('bounce').play();
				}
			}
		}
		// Check ground collision
		if (self.y > 2632) {
			self.y = 2632;
			self.velocityY = -self.velocityY * self.bounceDecay;
			self.velocityX *= 0.9;
			LK.getSound('bounce').play();
			if (Math.abs(self.velocityY) < 1) {
				self.isActive = false;
			}
		}
		// Remove if off screen
		if (self.x < -100 || self.x > 2148 || self.y > 2800) {
			self.isActive = false;
		}
	};
	return self;
});
var Hoop = Container.expand(function () {
	var self = Container.call(this);
	var backboard = self.attachAsset('backboard', {
		anchorX: 0.5,
		anchorY: 1
	});
	backboard.y = -20;
	var hoop = self.attachAsset('hoop', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	hoop.y = -350;
	// Set z-index to render in front of basketball
	hoop.zIndex = 1;
	var net = self.attachAsset('net', {
		anchorX: 0.5,
		anchorY: 0,
		scaleX: 1,
		scaleY: 1
	});
	net.y = -325;
	net.alpha = 0.3;
	// Set z-index to render in front of basketball
	net.zIndex = 2;
	self.hoopBounds = {
		left: -90,
		right: 90,
		top: -20,
		bottom: 20
	};
	// Enable z-index sorting for proper rendering order
	self.sortableChildren = true;
	return self;
});

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

/**** 
* Game Code
****/ 
var basketballs = [];
var hoop = null;
var ground = null;
var scoreTxt = null;
var streakTxt = null;
var currentStreak = 0;
var swipeStartX = 0;
var swipeStartY = 0;
var swipeStartTime = 0;
var isSwipeStarted = false;
var lastShotTime = 0;
var musicNotes = ['note1', 'note2', 'note3', 'note4', 'note5'];
var currentNoteIndex = 0;
// Enable z-index sorting for proper rendering order
game.sortableChildren = true;
// Create ground
ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0
}));
ground.y = 2632;
// Create hoop
hoop = game.addChild(new Hoop());
hoop.x = 1024;
hoop.y = 1300;
// Create score display
scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create streak display
streakTxt = new Text2('Streak: 0', {
	size: 60,
	fill: 0xFFD700
});
streakTxt.anchor.set(0.5, 0);
streakTxt.y = 100;
LK.gui.top.addChild(streakTxt);
function createBasketball(startX, startY, velocityX, velocityY) {
	var ball = new Basketball();
	ball.x = startX;
	ball.y = startY;
	ball.velocityX = velocityX;
	ball.velocityY = velocityY;
	basketballs.push(ball);
	game.addChild(ball);
	return ball;
}
function checkBasketScore(ball) {
	if (ball.hasScored) return;
	var hoopX = hoop.x;
	var hoopY = hoop.y;
	var relativeX = ball.x - hoopX;
	var relativeY = ball.y - hoopY;
	if (relativeX >= hoop.hoopBounds.left && relativeX <= hoop.hoopBounds.right && relativeY >= hoop.hoopBounds.top && relativeY <= hoop.hoopBounds.bottom && ball.velocityY > 0) {
		ball.hasScored = true;
		currentStreak++;
		var points = 10 * currentStreak;
		LK.setScore(LK.getScore() + points);
		// Play swish sound
		LK.getSound('swish').play();
		// Play musical note
		LK.getSound(musicNotes[currentNoteIndex]).play();
		currentNoteIndex = (currentNoteIndex + 1) % musicNotes.length;
		// Visual feedback
		LK.effects.flashObject(hoop, 0x00FF00, 300);
		// Update displays
		scoreTxt.setText('Score: ' + LK.getScore());
		streakTxt.setText('Streak: ' + currentStreak);
		// Animate streak text
		tween(streakTxt, {
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 200,
			onFinish: function onFinish() {
				tween(streakTxt, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 200
				});
			}
		});
	}
}
game.down = function (x, y, obj) {
	if (LK.ticks - lastShotTime < 60) return; // Prevent rapid firing
	isSwipeStarted = true;
	swipeStartX = x;
	swipeStartY = y;
	swipeStartTime = LK.ticks;
};
game.up = function (x, y, obj) {
	if (!isSwipeStarted) return;
	isSwipeStarted = false;
	lastShotTime = LK.ticks;
	// Calculate swipe distance and time
	var swipeDistanceX = x - swipeStartX;
	var swipeDistanceY = y - swipeStartY;
	var swipeTime = Math.max(1, LK.ticks - swipeStartTime);
	var swipeDistance = Math.sqrt(swipeDistanceX * swipeDistanceX + swipeDistanceY * swipeDistanceY);
	// Only shoot if there's meaningful swipe movement
	if (swipeDistance > 50) {
		// Calculate velocity based on swipe speed and direction
		var velocityMultiplier = Math.min(swipeDistance / swipeTime * 0.5, 20);
		var velocityX = swipeDistanceX / swipeTime * velocityMultiplier * 0.1;
		var velocityY = swipeDistanceY / swipeTime * velocityMultiplier * 0.1;
		// Calculate shooting position (bottom center of screen)
		var startX = 1024;
		var startY = 2500;
		createBasketball(startX, startY, velocityX, velocityY);
	}
};
game.update = function () {
	// Update basketballs
	for (var i = basketballs.length - 1; i >= 0; i--) {
		var ball = basketballs[i];
		if (!ball.isActive) {
			ball.destroy();
			basketballs.splice(i, 1);
			continue;
		}
		// Check for scoring
		checkBasketScore(ball);
		// Check collision with other basketballs
		for (var j = i + 1; j < basketballs.length; j++) {
			var otherBall = basketballs[j];
			if (!otherBall.isActive) continue;
			var dx = ball.x - otherBall.x;
			var dy = ball.y - otherBall.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			var minDistance = 120; // Combined radius of two basketballs
			if (distance < minDistance && distance > 0) {
				// Calculate collision normal
				var normalX = dx / distance;
				var normalY = dy / distance;
				// Separate balls to prevent overlap
				var overlap = minDistance - distance;
				var separationX = normalX * overlap * 0.5;
				var separationY = normalY * overlap * 0.5;
				ball.x += separationX;
				ball.y += separationY;
				otherBall.x -= separationX;
				otherBall.y -= separationY;
				// Calculate relative velocity
				var relativeVelX = ball.velocityX - otherBall.velocityX;
				var relativeVelY = ball.velocityY - otherBall.velocityY;
				// Calculate relative velocity along collision normal
				var relativeSpeed = relativeVelX * normalX + relativeVelY * normalY;
				// Only resolve if objects are moving towards each other
				if (relativeSpeed > 0) continue;
				// Calculate impulse scalar (assuming equal mass)
				var impulse = -2 * relativeSpeed / 2;
				var impulseX = impulse * normalX;
				var impulseY = impulse * normalY;
				// Apply impulse with bounce decay
				var bounceDecay = 0.8;
				ball.velocityX += impulseX * bounceDecay;
				ball.velocityY += impulseY * bounceDecay;
				otherBall.velocityX -= impulseX * bounceDecay;
				otherBall.velocityY -= impulseY * bounceDecay;
				// Play bounce sound
				LK.getSound('bounce').play();
			}
		}
	}
	// Reset streak if no balls scored recently
	if (basketballs.length === 0 && LK.ticks - lastShotTime > 180) {
		if (currentStreak > 0) {
			currentStreak = 0;
			streakTxt.setText('Streak: 0');
			currentNoteIndex = 0; // Reset musical progression
		}
	}
	// Check win condition
	if (LK.getScore() >= 500) {
		LK.showYouWin();
	}
};
// Start background music
LK.playMusic('backgroundMusic');

===================================================================
--- original.js
+++ change.js
@@ -240,8 +240,49 @@
 			continue;
 		}
 		// Check for scoring
 		checkBasketScore(ball);
+		// Check collision with other basketballs
+		for (var j = i + 1; j < basketballs.length; j++) {
+			var otherBall = basketballs[j];
+			if (!otherBall.isActive) continue;
+			var dx = ball.x - otherBall.x;
+			var dy = ball.y - otherBall.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			var minDistance = 120; // Combined radius of two basketballs
+			if (distance < minDistance && distance > 0) {
+				// Calculate collision normal
+				var normalX = dx / distance;
+				var normalY = dy / distance;
+				// Separate balls to prevent overlap
+				var overlap = minDistance - distance;
+				var separationX = normalX * overlap * 0.5;
+				var separationY = normalY * overlap * 0.5;
+				ball.x += separationX;
+				ball.y += separationY;
+				otherBall.x -= separationX;
+				otherBall.y -= separationY;
+				// Calculate relative velocity
+				var relativeVelX = ball.velocityX - otherBall.velocityX;
+				var relativeVelY = ball.velocityY - otherBall.velocityY;
+				// Calculate relative velocity along collision normal
+				var relativeSpeed = relativeVelX * normalX + relativeVelY * normalY;
+				// Only resolve if objects are moving towards each other
+				if (relativeSpeed > 0) continue;
+				// Calculate impulse scalar (assuming equal mass)
+				var impulse = -2 * relativeSpeed / 2;
+				var impulseX = impulse * normalX;
+				var impulseY = impulse * normalY;
+				// Apply impulse with bounce decay
+				var bounceDecay = 0.8;
+				ball.velocityX += impulseX * bounceDecay;
+				ball.velocityY += impulseY * bounceDecay;
+				otherBall.velocityX -= impulseX * bounceDecay;
+				otherBall.velocityY -= impulseY * bounceDecay;
+				// Play bounce sound
+				LK.getSound('bounce').play();
+			}
+		}
 	}
 	// Reset streak if no balls scored recently
 	if (basketballs.length === 0 && LK.ticks - lastShotTime > 180) {
 		if (currentStreak > 0) {