===================================================================
--- original.js
+++ change.js
@@ -35,8 +35,22 @@
 		self.demand += Math.random() * 10; // Increase demand randomly
 		self.supply += Math.random() * 5; // Increase supply randomly
 	};
 });
+// Player class to represent the player in the game
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	self.money = 1000; // Initial money for the player
+	self.update = function () {
+		// Update player logic here
+		// Player earns money from each business
+		for (var i = 0; i < businesses.length; i++) {
+			if (businesses[i].profit() > 0) {
+				self.money += businesses[i].profit();
+			}
+		}
+	};
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -58,8 +72,11 @@
 	business.y = 1366; // Center vertically
 	businesses.push(business);
 	game.addChild(business);
 }
+// Initialize the player
+var player = new Player();
+game.addChild(player);
 // Game update logic
 game.update = function () {
 	// Update each business
 	for (var i = 0; i < businesses.length; i++) {
@@ -70,12 +87,22 @@
 		}
 	}
 	// Update market
 	market.update();
+	// Update player
+	player.update();
 };
 // Handle touch events for interaction
 game.down = function (x, y, obj) {
-	// Handle touch down logic
+	// Buy a new business if the player has enough money
+	if (player.money >= 100) {
+		var business = new Business();
+		business.x = 400 + businesses.length * 300;
+		business.y = 1366; // Center vertically
+		businesses.push(business);
+		game.addChild(business);
+		player.money -= 100; // Deduct the cost of the business from the player's money
+	}
 };
 game.up = function (x, y, obj) {
 	// Handle touch up logic
 };