/**** 
* Classes
****/ 
var Business = Container.expand(function () {
	var self = Container.call(this);
	var businessGraphics = self.attachAsset('business', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.level = 1; // Level of the business
	self.earning = 1; // Money earned per second
	self.upgradeCost = 10; // Cost to upgrade the business
	self.update = function () {
		// Earn money every second
		if (LK.ticks % 60 == 0) {
			LK.setScore(LK.getScore() + self.earning);
			scoreTxt.setText('Money: ' + LK.getScore());
		}
	};
	// Upgrade the business to earn more money
	self.upgrade = function () {
		if (LK.getScore() >= self.upgradeCost) {
			LK.setScore(LK.getScore() - self.upgradeCost);
			self.earning *= 2;
			self.upgradeCost *= 2;
			levelTxt.setText('Money: ' + LK.getScore());
		}
	};
	// Buy a business
	self.buy = function () {
		if (LK.getScore() >= self.upgradeCost) {
			LK.setScore(LK.getScore() - self.upgradeCost);
			var newBusiness = new Business();
			newBusiness.x = businesses.length * 200;
			newBusiness.y = 0;
			businesses.push(newBusiness);
			square.addChild(newBusiness);
		}
	};
	// Event handler called when a press happens on element.
	self.down = function (x, y, obj) {
		self.upgrade();
	};
});
var Commercial = Container.expand(function () {
	var self = Container.call(this);
	var commercialGraphics = self.attachAsset('commercial', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.level = 1; // Level of the commercial building
	self.earning = 1; // Money earned per second
	self.upgradeCost = 10; // Cost to upgrade the commercial building
	self.update = function () {
		// Earn money every second
		if (LK.ticks % 60 == 0) {
			LK.setScore(LK.getScore() + self.earning);
			scoreTxt.setText(LK.getScore());
		}
	};
	// Upgrade the commercial building to earn more money
	self.upgrade = function () {
		if (LK.getScore() >= self.upgradeCost) {
			LK.setScore(LK.getScore() - self.upgradeCost);
			self.level += 1;
			self.earning *= 2;
			self.upgradeCost *= 2;
			levelTxt.setText('Level: ' + self.level);
		}
	};
	// Buy a residential building
	self.buy = function () {
		if (LK.getScore() >= self.upgradeCost) {
			LK.setScore(LK.getScore() - self.upgradeCost);
			var newResidential = new Residential();
			newResidential.x = residentials.length * 200;
			newResidential.y = 0;
			residentials.push(newResidential);
			square.addChild(newResidential);
		}
	};
	// Buy an industrial building
	self.buy = function () {
		if (LK.getScore() >= self.upgradeCost) {
			LK.setScore(LK.getScore() - self.upgradeCost);
			var newIndustrial = new Industrial();
			newIndustrial.x = industrials.length * 200;
			newIndustrial.y = 0;
			industrials.push(newIndustrial);
			square.addChild(newIndustrial);
		}
	};
	// Buy a commercial building
	self.buy = function () {
		if (LK.getScore() >= self.upgradeCost) {
			LK.setScore(LK.getScore() - self.upgradeCost);
			var newCommercial = new Commercial();
			newCommercial.x = commercials.length * 200;
			newCommercial.y = 0;
			commercials.push(newCommercial);
			square.addChild(newCommercial);
		}
	};
	// Event handler called when a press happens on element.
	self.down = function (x, y, obj) {
		self.upgrade();
	};
});
// Earn money every second
var Industrial = Container.expand(function () {
	var self = Container.call(this);
	var industrialGraphics = self.attachAsset('industrial', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.level = 1; // Level of the industrial building
	self.production = 1; // Production of the industrial building
	self.upgradeCost = 10; // Cost to upgrade the industrial building
	self.update = function () {
		// Industrial logic goes here
		// Increase production every second
		if (LK.ticks % 60 == 0) {
			self.production += self.level;
			productionTxt.setText('Production: ' + self.production);
		}
	};
	// Upgrade the industrial building to increase production
	self.upgrade = function () {
		if (LK.getScore() >= self.upgradeCost) {
			LK.setScore(LK.getScore() - self.upgradeCost);
			self.level += 1;
			self.upgradeCost *= 2;
			levelTxt.setText('Level: ' + self.level);
		}
	};
	// Event handler called when a press happens on element.
	self.down = function (x, y, obj) {
		self.upgrade();
	};
});
// Earn money every second
var Residential = Container.expand(function () {
	var self = Container.call(this);
	var residentialGraphics = self.attachAsset('residential', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.level = 1; // Level of the residential building
	self.population = 1; // Population of the residential building
	self.upgradeCost = 10; // Cost to upgrade the residential building
	self.update = function () {
		// Residential logic goes here
		// Increase population every second
		if (LK.ticks % 60 == 0) {
			self.population += self.level;
			populationTxt.setText('Population: ' + self.population);
		}
	};
	// Upgrade the residential building to increase population
	self.upgrade = function () {
		if (LK.getScore() >= self.upgradeCost) {
			LK.setScore(LK.getScore() - self.upgradeCost);
			self.level += 1;
			self.upgradeCost *= 2;
			levelTxt.setText('Level: ' + self.level);
		}
	};
	// Event handler called when a press happens on element.
	self.down = function (x, y, obj) {
		self.upgrade();
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Initialize a plain image to represent the land
var plainLand = LK.getAsset('plain', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366
});
game.addChild(plainLand);
// Create a square where all the buildings will be placed
var square = new Container();
game.addChild(square);
square.x = 1024;
square.y = 1366;
// Initialize buildings as empty arrays
var businesses = [];
var commercials = [];
var industrials = [];
var residentials = [];
// Create a purchase menu for buildings
var purchaseMenu = new Container();
game.addChild(purchaseMenu);
purchaseMenu.x = 100;
purchaseMenu.y = 100;
// Add buttons for purchasing different types of buildings
var businessButton = new Text2('Buy Business', {
	size: 50,
	fill: 0xFFFFFF
});
businessButton.anchor.set(0.5, 0.5);
businessButton.y = 0;
purchaseMenu.addChild(businessButton);
var commercialButton = new Text2('Buy Commercial', {
	size: 50,
	fill: 0xFFFFFF
});
commercialButton.anchor.set(0.5, 0.5);
commercialButton.y = 100;
purchaseMenu.addChild(commercialButton);
var industrialButton = new Text2('Buy Industrial', {
	size: 50,
	fill: 0xFFFFFF
});
industrialButton.anchor.set(0.5, 0.5);
industrialButton.y = 200;
purchaseMenu.addChild(industrialButton);
var residentialButton = new Text2('Buy Residential', {
	size: 50,
	fill: 0xFFFFFF
});
residentialButton.anchor.set(0.5, 0.5);
residentialButton.y = 300;
purchaseMenu.addChild(residentialButton);
// Add event listeners for buttons
var selectedBuilding = null;
function placeBuilding(x, y) {
	if (selectedBuilding) {
		selectedBuilding.x = x;
		selectedBuilding.y = y;
		square.addChild(selectedBuilding);
		selectedBuilding = null;
	}
}
game.down = function (x, y, obj) {
	placeBuilding(x, y);
};
businessButton.down = function () {
	selectedBuilding = new Business();
};
commercialButton.down = function () {
	selectedBuilding = new Commercial();
};
industrialButton.down = function () {
	selectedBuilding = new Industrial();
};
residentialButton.down = function () {
	selectedBuilding = new Residential();
};
businessButton.down = function () {
	var newBusiness = new Business();
	newBusiness.x = businesses.length * 200;
	newBusiness.y = 0;
	businesses.push(newBusiness);
	square.addChild(newBusiness);
};
commercialButton.down = function () {
	var newCommercial = new Commercial();
	newCommercial.x = commercials.length * 200;
	newCommercial.y = 0;
	commercials.push(newCommercial);
	square.addChild(newCommercial);
};
industrialButton.down = function () {
	var newIndustrial = new Industrial();
	newIndustrial.x = industrials.length * 200;
	newIndustrial.y = 0;
	industrials.push(newIndustrial);
	square.addChild(newIndustrial);
};
residentialButton.down = function () {
	var newResidential = new Residential();
	newResidential.x = residentials.length * 200;
	newResidential.y = 0;
	residentials.push(newResidential);
	square.addChild(newResidential);
};
var scoreTxt = new Text2('Money: 0', {
	size: 150,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var levelTxt = new Text2('Level: 1', {
	size: 100,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(0.5, 0);
LK.gui.topRight.addChild(levelTxt);
var productionTxt = new Text2('Production: 1', {
	size: 100,
	fill: 0xFFFFFF
});
productionTxt.anchor.set(0.5, 0);
LK.gui.bottomLeft.addChild(productionTxt);
var populationTxt = new Text2('Population: 1', {
	size: 100,
	fill: 0xFFFFFF
});
populationTxt.anchor.set(0.5, 0);
LK.gui.bottomRight.addChild(populationTxt);

===================================================================
--- original.js
+++ change.js
@@ -181,8 +181,15 @@
 /**** 
 * Game Code
 ****/ 
 // Initialize a plain image to represent the land
+var plainLand = LK.getAsset('plain', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: 1024,
+	y: 1366
+});
+game.addChild(plainLand);
 // Create a square where all the buildings will be placed
 var square = new Container();
 game.addChild(square);
 square.x = 1024;
@@ -226,9 +233,33 @@
 residentialButton.anchor.set(0.5, 0.5);
 residentialButton.y = 300;
 purchaseMenu.addChild(residentialButton);
 // Add event listeners for buttons
+var selectedBuilding = null;
+function placeBuilding(x, y) {
+	if (selectedBuilding) {
+		selectedBuilding.x = x;
+		selectedBuilding.y = y;
+		square.addChild(selectedBuilding);
+		selectedBuilding = null;
+	}
+}
+game.down = function (x, y, obj) {
+	placeBuilding(x, y);
+};
 businessButton.down = function () {
+	selectedBuilding = new Business();
+};
+commercialButton.down = function () {
+	selectedBuilding = new Commercial();
+};
+industrialButton.down = function () {
+	selectedBuilding = new Industrial();
+};
+residentialButton.down = function () {
+	selectedBuilding = new Residential();
+};
+businessButton.down = function () {
 	var newBusiness = new Business();
 	newBusiness.x = businesses.length * 200;
 	newBusiness.y = 0;
 	businesses.push(newBusiness);