===================================================================
--- original.js
+++ change.js
@@ -14,9 +14,14 @@
 	var bulldozerGraphics = self.createAsset('bulldozer', 'Bulldozer asset', 0.5, 0.5);
 	self.speed = 0; // Base speed V will be set later
 	self.pushing = null; // Reference to the rock it's pushing
 	self.update = function () {
-		// Bulldozer update code here
+		if (!self.pushing) {
+			// Approach nearest rock logic
+		} else {
+			// Push rock logic, considering rock size and number of bulldozers
+		}
+		// Handle bulldozer quarter turn logic for direction change
 	};
 });
 /* 
 Game Zones:
@@ -40,56 +45,8 @@
 - The game ends when all rocks have been moved out of the RoadZone. The winner is the one with the highest score, based on the number and size of rocks successfully moved to the opposing zone.
 - The goal for the human player is to move all the rocks to the ComputerZone while preventing the computer from doing the same. Effective strategy and skillful bulldozer management are necessary to maximize the score.
 There is no time limit in this game, and players must use their judgment to determine the best way to move rocks and use their bulldozers to win the game.
 */
-var LargeRock = Container.expand(function () {
-	var self = Container.call(this);
-	var rockGraphics = self.createAsset('largeRock', 'Large rock asset', 0.5, 0.5);
-	self.size = 'large';
-	self.points = 3;
-	self.interactive = true;
-	self.buttonMode = true;
-	self.on('down', function (obj) {
-		LK.trigger('rockSelected', {
-			rock: self
-		});
-	});
-	self.update = function () {
-		// Large rock specific update code here
-	};
-});
-var MediumRock = Container.expand(function () {
-	var self = Container.call(this);
-	var rockGraphics = self.createAsset('mediumRock', 'Medium rock asset', 0.5, 0.5);
-	self.size = 'medium';
-	self.points = 2;
-	self.interactive = true;
-	self.buttonMode = true;
-	self.on('down', function (obj) {
-		LK.trigger('rockSelected', {
-			rock: self
-		});
-	});
-	self.update = function () {
-		// Medium rock specific update code here
-	};
-});
-var SmallRock = Container.expand(function () {
-	var self = Container.call(this);
-	var rockGraphics = self.createAsset('smallRock', 'Small rock asset', 0.5, 0.5);
-	self.size = 'small';
-	self.points = 1;
-	self.interactive = true;
-	self.buttonMode = true;
-	self.on('down', function (obj) {
-		LK.trigger('rockSelected', {
-			rock: self
-		});
-	});
-	self.update = function () {
-		// Small rock specific update code here
-	};
-});
 // This change assumes the creation of a SpecialRock class
 // This change assumes that a progress display function will be added globally
 // Function to update game progress display
 /**** // Create animations for bulldozers and rocks// Add time limits or special rocks