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

/**** 
* Classes
****/ 
var Ball = Container.expand(function (color) {
	var self = Container.call(this);
	self.ballColor = color;
	self.gridX = 0;
	self.gridY = 0;
	self.isAnimating = false;
	var ballAssets = ['redBall', 'blueBall', 'greenBall', 'yellowBall', 'purpleBall', 'orangeBall'];
	var assetToUse = ballAssets[color];
	var ballGraphics = self.attachAsset(assetToUse, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.setGridPosition = function (gridX, gridY) {
		self.gridX = gridX;
		self.gridY = gridY;
		self.x = gridStartX + gridX * cellSize + cellSize / 2;
		self.y = gridStartY + gridY * cellSize + cellSize / 2;
	};
	self.explode = function () {
		// Scale up and fade out explosion effect
		tween(self, {
			scaleX: 1.3,
			scaleY: 1.3,
			alpha: 0
		}, {
			duration: 600,
			easing: tween.ease.inOut,
			onFinish: function onFinish() {
				if (self.parent) {
					self.destroy();
				}
			}
		});
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2c3e50
});

/**** 
* Game Code
****/ 
// Grid configuration variables needed by Ball class
var gridSize = 8;
var cellSize = 220;
var gridStartX = (2048 - gridSize * cellSize) / 2;
var gridStartY = 400;
var grid = [];
var selectedBall = null;
var movesLeft = 30;
var targetScore = 1000;
var isProcessingMatches = false;
var ballColors = 6;
// UI Elements
var movesText = new Text2('Moves: 30', {
	size: 80,
	fill: 0xFFFFFF
});
movesText.anchor.set(0.5, 0);
LK.gui.top.addChild(movesText);
movesText.y = 150;
var scoreText = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
scoreText.y = 250;
var targetText = new Text2('Target: 1000', {
	size: 60,
	fill: 0xFFFF00
});
targetText.anchor.set(0.5, 0);
LK.gui.top.addChild(targetText);
targetText.y = 340;
// Initialize grid
function initializeGrid() {
	grid = [];
	for (var y = 0; y < gridSize; y++) {
		grid[y] = [];
		for (var x = 0; x < gridSize; x++) {
			grid[y][x] = null;
		}
	}
	// Fill grid with balls
	for (var y = 0; y < gridSize; y++) {
		for (var x = 0; x < gridSize; x++) {
			createBallAt(x, y);
		}
	}
	// Remove initial matches
	while (findMatches().length > 0) {
		removeMatches();
		dropBalls();
		fillEmptySpaces();
	}
}
function createBallAt(x, y) {
	var color = Math.floor(Math.random() * ballColors);
	var ball = new Ball(color);
	ball.setGridPosition(x, y);
	grid[y][x] = ball;
	game.addChild(ball);
	// Animate ball appearing with scale and bounce
	ball.scaleX = 0;
	ball.scaleY = 0;
	ball.alpha = 0;
	tween(ball, {
		scaleX: 1,
		scaleY: 1,
		alpha: 1
	}, {
		duration: 400,
		easing: tween.ease.out
	});
	return ball;
}
function getBallAt(x, y) {
	if (x < 0 || x >= gridSize || y < 0 || y >= gridSize) {
		return null;
	}
	return grid[y][x];
}
function swapBalls(ball1, ball2) {
	if (!ball1 || !ball2) {
		return false;
	}
	var x1 = ball1.gridX,
		y1 = ball1.gridY;
	var x2 = ball2.gridX,
		y2 = ball2.gridY;
	// Check if balls are adjacent
	var dx = Math.abs(x1 - x2);
	var dy = Math.abs(y1 - y2);
	if (dx + dy !== 1) {
		return false;
	}
	// Mark balls as animating
	ball1.isAnimating = true;
	ball2.isAnimating = true;
	// Store old positions
	var oldX1 = ball1.x,
		oldY1 = ball1.y;
	var oldX2 = ball2.x,
		oldY2 = ball2.y;
	// Swap positions in grid
	grid[y1][x1] = ball2;
	grid[y2][x2] = ball1;
	// Update ball positions
	ball1.setGridPosition(x2, y2);
	ball2.setGridPosition(x1, y1);
	// Store new positions
	var newX1 = ball1.x,
		newY1 = ball1.y;
	var newX2 = ball2.x,
		newY2 = ball2.y;
	// Reset to old positions for animation
	ball1.x = oldX1;
	ball1.y = oldY1;
	ball2.x = oldX2;
	ball2.y = oldY2;
	// Animate to new positions
	tween(ball1, {
		x: newX1,
		y: newY1
	}, {
		duration: 250,
		easing: tween.ease.inOut,
		onFinish: function onFinish() {
			ball1.isAnimating = false;
		}
	});
	tween(ball2, {
		x: newX2,
		y: newY2
	}, {
		duration: 250,
		easing: tween.ease.inOut,
		onFinish: function onFinish() {
			ball2.isAnimating = false;
		}
	});
	LK.getSound('swap').play();
	return true;
}
function findMatches() {
	var matches = [];
	// Check horizontal matches
	for (var y = 0; y < gridSize; y++) {
		var count = 1;
		var currentColor = grid[y][0] ? grid[y][0].ballColor : -1;
		for (var x = 1; x < gridSize; x++) {
			var ball = grid[y][x];
			if (ball && ball.ballColor === currentColor) {
				count++;
			} else {
				if (count >= 3) {
					for (var i = x - count; i < x; i++) {
						matches.push({
							x: i,
							y: y
						});
					}
				}
				count = 1;
				currentColor = ball ? ball.ballColor : -1;
			}
		}
		if (count >= 3) {
			for (var i = gridSize - count; i < gridSize; i++) {
				matches.push({
					x: i,
					y: y
				});
			}
		}
	}
	// Check vertical matches
	for (var x = 0; x < gridSize; x++) {
		var count = 1;
		var currentColor = grid[0][x] ? grid[0][x].ballColor : -1;
		for (var y = 1; y < gridSize; y++) {
			var ball = grid[y][x];
			if (ball && ball.ballColor === currentColor) {
				count++;
			} else {
				if (count >= 3) {
					for (var i = y - count; i < y; i++) {
						matches.push({
							x: x,
							y: i
						});
					}
				}
				count = 1;
				currentColor = ball ? ball.ballColor : -1;
			}
		}
		if (count >= 3) {
			for (var i = gridSize - count; i < gridSize; i++) {
				matches.push({
					x: x,
					y: i
				});
			}
		}
	}
	return matches;
}
function removeMatches() {
	var matches = findMatches();
	if (matches.length === 0) {
		return false;
	}
	var pointsEarned = matches.length * 10;
	for (var i = 0; i < matches.length; i++) {
		var match = matches[i];
		var ball = grid[match.y][match.x];
		if (ball) {
			ball.explode();
			grid[match.y][match.x] = null;
		}
	}
	LK.setScore(LK.getScore() + pointsEarned);
	scoreText.setText('Score: ' + LK.getScore());
	LK.getSound('match').play();
	return true;
}
function dropBalls() {
	for (var x = 0; x < gridSize; x++) {
		var writePos = gridSize - 1;
		for (var y = gridSize - 1; y >= 0; y--) {
			if (grid[y][x] !== null) {
				if (y !== writePos) {
					grid[writePos][x] = grid[y][x];
					grid[y][x] = null;
					var ball = grid[writePos][x];
					ball.isAnimating = true;
					var oldY = ball.y;
					ball.setGridPosition(x, writePos);
					var newY = ball.y;
					ball.y = oldY;
					// Animate ball falling down
					tween(ball, {
						y: newY
					}, {
						duration: 300,
						easing: tween.ease.out,
						onFinish: function onFinish() {
							ball.isAnimating = false;
						}
					});
				}
				writePos--;
			}
		}
	}
}
function fillEmptySpaces() {
	for (var x = 0; x < gridSize; x++) {
		for (var y = 0; y < gridSize; y++) {
			if (grid[y][x] === null) {
				createBallAt(x, y);
			}
		}
	}
}
function processMatches() {
	if (isProcessingMatches) {
		return;
	}
	isProcessingMatches = true;
	function processStep() {
		if (removeMatches()) {
			dropBalls();
			fillEmptySpaces();
			LK.setTimeout(function () {
				processStep();
			}, 500);
		} else {
			isProcessingMatches = false;
			checkGameState();
		}
	}
	processStep();
}
function checkGameState() {
	if (LK.getScore() >= targetScore) {
		LK.showYouWin();
		return;
	}
	if (movesLeft <= 0) {
		LK.showGameOver();
		return;
	}
}
function getClickedBall(x, y) {
	var gridX = Math.floor((x - gridStartX) / cellSize);
	var gridY = Math.floor((y - gridStartY) / cellSize);
	if (gridX >= 0 && gridX < gridSize && gridY >= 0 && gridY < gridSize) {
		return getBallAt(gridX, gridY);
	}
	return null;
}
game.down = function (x, y, obj) {
	if (isProcessingMatches) {
		return;
	}
	var clickedBall = getClickedBall(x, y);
	if (clickedBall && !clickedBall.isAnimating) {
		if (selectedBall === null) {
			selectedBall = clickedBall;
			LK.effects.flashObject(selectedBall, 0xffffff, 200);
		} else if (selectedBall === clickedBall) {
			selectedBall = null;
		} else {
			if (swapBalls(selectedBall, clickedBall)) {
				movesLeft--;
				movesText.setText('Moves: ' + movesLeft);
				LK.setTimeout(function () {
					var matches = findMatches();
					if (matches.length > 0) {
						processMatches();
					} else {
						swapBalls(selectedBall, clickedBall);
						movesLeft++;
						movesText.setText('Moves: ' + movesLeft);
					}
				}, 300);
			}
			selectedBall = null;
		}
	}
};
game.up = function (x, y, obj) {};
// Initialize the game
initializeGrid();
;

===================================================================
--- original.js
+++ change.js
@@ -31,9 +31,9 @@
 			scaleY: 1.3,
 			alpha: 0
 		}, {
 			duration: 600,
-			easing: tween.easeInOut,
+			easing: tween.ease.inOut,
 			onFinish: function onFinish() {
 				if (self.parent) {
 					self.destroy();
 				}
@@ -52,8 +52,9 @@
 
 /**** 
 * Game Code
 ****/ 
+// Grid configuration variables needed by Ball class
 var gridSize = 8;
 var cellSize = 220;
 var gridStartX = (2048 - gridSize * cellSize) / 2;
 var gridStartY = 400;
@@ -122,9 +123,9 @@
 		scaleY: 1,
 		alpha: 1
 	}, {
 		duration: 400,
-		easing: tween.bounceOut
+		easing: tween.ease.out
 	});
 	return ball;
 }
 function getBallAt(x, y) {
@@ -176,9 +177,9 @@
 		x: newX1,
 		y: newY1
 	}, {
 		duration: 250,
-		easing: tween.easeInOut,
+		easing: tween.ease.inOut,
 		onFinish: function onFinish() {
 			ball1.isAnimating = false;
 		}
 	});
@@ -186,9 +187,9 @@
 		x: newX2,
 		y: newY2
 	}, {
 		duration: 250,
-		easing: tween.easeInOut,
+		easing: tween.ease.inOut,
 		onFinish: function onFinish() {
 			ball2.isAnimating = false;
 		}
 	});
@@ -296,9 +297,9 @@
 					tween(ball, {
 						y: newY
 					}, {
 						duration: 300,
-						easing: tween.bounceOut,
+						easing: tween.ease.out,
 						onFinish: function onFinish() {
 							ball.isAnimating = false;
 						}
 					});