===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,298 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+var storage = LK.import("@upit/storage.v1");
+
+/**** 
+* Classes
+****/ 
+var Customer = Container.expand(function () {
+	var self = Container.call(this);
+	var customerGraphics = self.attachAsset('customer', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 1 + Math.random() * 2;
+	self.targetShelf = null;
+	self.state = 'browsing'; // browsing, shopping, leaving
+	self.patience = 300 + Math.random() * 200;
+	self.maxPatience = self.patience;
+	self.findNearestShelf = function () {
+		var nearestShelf = null;
+		var minDistance = Infinity;
+		shelves.forEach(function (shelf) {
+			if (shelf.products.length > 0) {
+				var distance = Math.sqrt(Math.pow(self.x - shelf.x, 2) + Math.pow(self.y - shelf.y, 2));
+				if (distance < minDistance) {
+					minDistance = distance;
+					nearestShelf = shelf;
+				}
+			}
+		});
+		return nearestShelf;
+	};
+	self.update = function () {
+		self.patience--;
+		if (self.patience <= 0) {
+			self.state = 'leaving';
+		}
+		if (self.state === 'browsing') {
+			if (!self.targetShelf) {
+				self.targetShelf = self.findNearestShelf();
+			}
+			if (self.targetShelf) {
+				var dx = self.targetShelf.x - self.x;
+				var dy = self.targetShelf.y - self.y;
+				var distance = Math.sqrt(dx * dx + dy * dy);
+				if (distance < 60) {
+					self.state = 'shopping';
+					self.patience = 60;
+				} else {
+					self.x += dx / distance * self.speed;
+					self.y += dy / distance * self.speed;
+				}
+			}
+		} else if (self.state === 'shopping') {
+			if (self.targetShelf && self.targetShelf.products.length > 0) {
+				var earnings = self.targetShelf.sellProduct();
+				money += earnings;
+				updateUI();
+				LK.getSound('cashRegister').play();
+				self.state = 'leaving';
+			} else {
+				self.state = 'browsing';
+				self.targetShelf = null;
+			}
+		} else if (self.state === 'leaving') {
+			self.x += self.speed;
+			self.y -= self.speed * 0.5;
+			if (self.x > 2048 + 50 || self.y < -50) {
+				self.destroy();
+				customers.splice(customers.indexOf(self), 1);
+			}
+		}
+	};
+	return self;
+});
+var Shelf = Container.expand(function () {
+	var self = Container.call(this);
+	var shelfGraphics = self.attachAsset('shelf', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.products = [];
+	self.maxProducts = 5;
+	self.productType = 'basic';
+	self.price = 10;
+	self.addProduct = function () {
+		if (self.products.length < self.maxProducts) {
+			var product = self.addChild(LK.getAsset('product', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			}));
+			product.x = (self.products.length - 2) * 20;
+			product.y = -25;
+			self.products.push(product);
+		}
+	};
+	self.sellProduct = function () {
+		if (self.products.length > 0) {
+			var product = self.products.pop();
+			product.destroy();
+			return self.price;
+		}
+		return 0;
+	};
+	self.down = function (x, y, obj) {
+		if (self.products.length > 0) {
+			var earnings = self.sellProduct();
+			money += earnings;
+			updateUI();
+			LK.getSound('purchase').play();
+			// Visual feedback
+			LK.effects.flashObject(self, 0x00FF00, 300);
+		}
+	};
+	return self;
+});
+var StoreManager = Container.expand(function () {
+	var self = Container.call(this);
+	self.customerSpawnTimer = 0;
+	self.customerSpawnRate = 120; // spawn every 2 seconds at 60fps
+	self.spawnCustomer = function () {
+		if (customers.length < 8) {
+			var customer = new Customer();
+			customer.x = -50;
+			customer.y = 400 + Math.random() * 400;
+			customers.push(customer);
+			game.addChild(customer);
+		}
+	};
+	self.update = function () {
+		self.customerSpawnTimer++;
+		if (self.customerSpawnTimer >= self.customerSpawnRate) {
+			self.customerSpawnTimer = 0;
+			self.spawnCustomer();
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var money = storage.money || 500;
+var level = storage.level || 1;
+var shelves = [];
+var customers = [];
+var storeSize = storage.storeSize || 1;
+// UI Elements
+var moneyText = new Text2('$' + money, {
+	size: 60,
+	fill: 0x000000
+});
+moneyText.anchor.set(0.5, 0);
+LK.gui.top.addChild(moneyText);
+var levelText = new Text2('Level ' + level, {
+	size: 40,
+	fill: 0x000000
+});
+levelText.anchor.set(0, 0);
+levelText.x = 50;
+levelText.y = 50;
+LK.gui.topLeft.addChild(levelText);
+// Store floor
+var storeFloor = game.addChild(LK.getAsset('storeFloor', {
+	anchorX: 0.5,
+	anchorY: 0.5
+}));
+storeFloor.x = 1024;
+storeFloor.y = 600;
+// Initial shelves
+function createShelf(x, y) {
+	var shelf = new Shelf();
+	shelf.x = x;
+	shelf.y = y;
+	// Stock with initial products
+	for (var i = 0; i < 3; i++) {
+		shelf.addProduct();
+	}
+	shelves.push(shelf);
+	game.addChild(shelf);
+	return shelf;
+}
+// Create initial store layout
+createShelf(800, 400);
+createShelf(1000, 400);
+createShelf(1200, 400);
+createShelf(800, 600);
+createShelf(1000, 600);
+createShelf(1200, 600);
+// Expand store button
+var expandButton = game.addChild(LK.getAsset('expandButton', {
+	anchorX: 0.5,
+	anchorY: 0.5
+}));
+expandButton.x = 1600;
+expandButton.y = 400;
+var expandText = new Text2('Expand\n$200', {
+	size: 20,
+	fill: 0xFFFFFF
+});
+expandText.anchor.set(0.5, 0.5);
+expandButton.addChild(expandText);
+expandButton.down = function (x, y, obj) {
+	if (money >= 200) {
+		money -= 200;
+		storeSize++;
+		// Add new shelves
+		var newShelfY = 400 + (storeSize - 1) * 150;
+		createShelf(1400, newShelfY);
+		createShelf(1600, newShelfY);
+		updateUI();
+		LK.getSound('expand').play();
+		LK.effects.flashObject(expandButton, 0x00FF00, 500);
+	} else {
+		LK.effects.flashObject(expandButton, 0xFF0000, 500);
+	}
+};
+// Restock button
+var stockButton = game.addChild(LK.getAsset('stockButton', {
+	anchorX: 0.5,
+	anchorY: 0.5
+}));
+stockButton.x = 1600;
+stockButton.y = 500;
+var stockText = new Text2('Restock\n$50', {
+	size: 20,
+	fill: 0xFFFFFF
+});
+stockText.anchor.set(0.5, 0.5);
+stockButton.addChild(stockText);
+stockButton.down = function (x, y, obj) {
+	if (money >= 50) {
+		money -= 50;
+		// Restock all shelves
+		shelves.forEach(function (shelf) {
+			while (shelf.products.length < shelf.maxProducts) {
+				shelf.addProduct();
+			}
+		});
+		updateUI();
+		LK.getSound('purchase').play();
+		LK.effects.flashObject(stockButton, 0x00FF00, 500);
+	} else {
+		LK.effects.flashObject(stockButton, 0xFF0000, 500);
+	}
+};
+// Store manager
+var storeManager = new StoreManager();
+game.addChild(storeManager);
+function updateUI() {
+	moneyText.setText('$' + money);
+	// Level up system
+	if (money >= level * 1000) {
+		level++;
+		levelText.setText('Level ' + level);
+		LK.effects.flashScreen(0x00FF00, 1000);
+	}
+	// Save progress
+	storage.money = money;
+	storage.level = level;
+	storage.storeSize = storeSize;
+}
+// Game loop
+game.update = function () {
+	// Update customers
+	for (var i = customers.length - 1; i >= 0; i--) {
+		var customer = customers[i];
+		if (customer.update) {
+			customer.update();
+		}
+	}
+	// Update store manager
+	if (storeManager.update) {
+		storeManager.update();
+	}
+	// Check win condition
+	if (money >= 10000) {
+		LK.showYouWin();
+	}
+	// Check lose condition (bankruptcy)
+	if (money < 0 && shelves.every(function (shelf) {
+		return shelf.products.length === 0;
+	})) {
+		LK.showGameOver();
+	}
+};
+// Initialize UI
+updateUI();
\ No newline at end of file