===================================================================
--- original.js
+++ change.js
@@ -1,39 +1,41 @@
 /**** 
 * Classes
 ****/ 
-// Cat class
-var Cat = Container.expand(function () {
-	var self = Container.call(this);
-	var catGraphics = self.attachAsset('cat', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.speed = 2;
-	self.direction = 'left';
-	self.patrol = function () {
-		if (self.direction === 'left') {
-			self.x -= self.speed;
-			if (self.x < 0) {
-				self.direction = 'right';
-			}
-		}
-		if (self.direction === 'right') {
-			self.x += self.speed;
-			if (self.x > 2048) {
-				self.direction = 'left';
-			}
-		}
-	};
-});
 // Cheese class
 var Cheese = Container.expand(function () {
 	var self = Container.call(this);
 	var cheeseGraphics = self.attachAsset('cheese', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 });
+// Grid class
+var Grid = Container.expand(function () {
+	var self = Container.call(this);
+	self.grid = [];
+	self.gridSize = 100;
+	self.gridWidth = 2048 / self.gridSize;
+	self.gridHeight = 2732 / self.gridSize;
+	// Initialize the grid with empty cells
+	for (var i = 0; i < self.gridWidth; i++) {
+		self.grid[i] = [];
+		for (var j = 0; j < self.gridHeight; j++) {
+			self.grid[i][j] = null;
+		}
+	}
+	// Method to add an object to the grid
+	self.addObject = function (obj, x, y) {
+		self.grid[x][y] = obj;
+		obj.x = x * self.gridSize;
+		obj.y = y * self.gridSize;
+	};
+	// Method to move an object in the grid
+	self.moveObject = function (obj, oldX, oldY, newX, newY) {
+		self.grid[oldX][oldY] = null;
+		self.addObject(obj, newX, newY);
+	};
+});
 // Hole class
 var Hole = Container.expand(function () {
 	var self = Container.call(this);
 	var holeGraphics = self.attachAsset('hole', {
@@ -50,30 +52,30 @@
 		anchorY: 0.5
 	});
 	self.speed = 5;
 	self.move = function (direction) {
+		var oldX = self.x / grid.gridSize;
+		var oldY = self.y / grid.gridSize;
+		var newX = oldX;
+		var newY = oldY;
 		if (direction === 'left') {
-			self.x -= self.speed;
+			newX--;
 		}
 		if (direction === 'right') {
-			self.x += self.speed;
+			newX++;
 		}
 		if (direction === 'up') {
-			self.y -= self.speed;
+			newY--;
 		}
 		if (direction === 'down') {
-			self.y += self.speed;
+			newY++;
 		}
+		// Check if the new position is within the grid and not occupied
+		if (newX >= 0 && newX < grid.gridWidth && newY >= 0 && newY < grid.gridHeight && grid.grid[newX][newY] === null) {
+			grid.moveObject(self, oldX, oldY, newX, newY);
+		}
 	};
 });
-// Wall class
-var Wall = Container.expand(function () {
-	var self = Container.call(this);
-	var wallGraphics = self.attachAsset('wall', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -83,43 +85,22 @@
 
 /**** 
 * Game Code
 ****/ 
-var mouse = game.addChild(new Mouse());
-mouse.x = 100;
-mouse.y = 2732 / 2;
-var cheese = game.addChild(new Cheese());
-cheese.x = 2048 / 2;
-cheese.y = 2732 / 2;
-var hole = game.addChild(new Hole());
-hole.x = 2048 - 100;
-hole.y = 2732 / 2;
-var cat = game.addChild(new Cat());
-cat.x = 2048 / 2;
-cat.y = 2732 / 2;
-// Add walls to the game
-var walls = [];
-for (var i = 0; i < 10; i++) {
-	var wall = game.addChild(new Wall());
-	wall.x = i * 200;
-	wall.y = 2732 / 2;
-	walls.push(wall);
-}
+var grid = game.addChild(new Grid());
+var mouse = new Mouse();
+grid.addObject(mouse, 1, grid.gridHeight / 2);
+var cheese = new Cheese();
+grid.addObject(cheese, grid.gridWidth / 2, grid.gridHeight / 2);
+var hole = new Hole();
+grid.addObject(hole, grid.gridWidth - 1, grid.gridHeight / 2);
 var dragNode = null;
 function handleMove(obj) {
 	var event = obj.event;
 	var pos = event.getLocalPosition(game);
 	if (dragNode) {
-		var dx = pos.x - dragNode.x;
-		var dy = pos.y - dragNode.y;
-		var distance = Math.sqrt(dx * dx + dy * dy);
-		if (distance > 1) {
-			dragNode.x += dx * 0.05;
-			dragNode.y += dy * 0.05;
-		} else {
-			dragNode.x = pos.x;
-			dragNode.y = pos.y;
-		}
+		dragNode.x = pos.x;
+		dragNode.y = pos.y;
 	}
 	if (mouse.intersects(cheese)) {
 		// Mouse got the cheese, move cheese to mouse position
 		cheese.x = mouse.x;
@@ -136,26 +117,9 @@
 	handleMove(obj);
 });
 game.on('move', handleMove);
 game.on('up', function (obj) {
-	var event = obj.event;
-	var pos = event.getLocalPosition(game);
-	mouse.x = pos.x;
-	mouse.y = pos.y;
 	dragNode = null;
 });
 LK.on('tick', function () {
 	// Game logic to be executed each tick
-	cat.patrol();
-	if (mouse.intersects(cat)) {
-		// Cat caught the mouse, show game over
-		LK.effects.flashScreen(0xFF0000, 1000);
-		LK.showGameOver();
-	}
-	// Check for collision with walls
-	for (var i = 0; i < walls.length; i++) {
-		if (mouse.intersects(walls[i])) {
-			// Mouse hit a wall, stop movement
-			dragNode = null;
-		}
-	}
 });
\ No newline at end of file