var Dot = Container.expand(function () {
	console.log('Dot class initialized');
	var self = Container.call(this);
	console.log('Container called');
	var dotGraphics = self.createAsset('dot', 'Dot', .5, .5);
	console.log('Dot asset created');
	self.eatDot = function () {
		console.log('Dot eaten:', self);
		self.destroy();
		console.log('Dot destroyed');
	};
});
var Pacman = Container.expand(function () {
	console.log('Pacman class initialized');
	var self = Container.call(this);
	console.log('Container called');
	var pacmanGraphics = self.createAsset('pacman', 'Pacman character', .5, .5);
	console.log('Pacman asset created');
	self.move = function () {};
	console.log('Move function added');
});
var Ghost = Container.expand(function () {
	console.log('Ghost class initialized');
	var self = Container.call(this);
	console.log('Container called');
	var ghostGraphics = self.createAsset('ghost', 'Ghost', .5, .5);
	console.log('Ghost asset created');
	self.move = function () {};
	console.log('Move function added');
});
var PowerPellet = Container.expand(function () {
	console.log('PowerPellet class initialized');
	var self = Container.call(this);
	console.log('Container called');
	var powerPelletGraphics = self.createAsset('powerPellet', 'Power Pellet', .5, .5);
	console.log('PowerPellet asset created');
	self.eatPowerPellet = function () {
		console.log('Power Pellet eaten:', self);
		self.destroy();
		console.log('PowerPellet destroyed');
	};
});
var Game = Container.expand(function () {
	console.log('Game class initialized');
	var self = Container.call(this);
	console.log('Container called');
	var pacman = self.addChild(new Pacman());
	console.log('Pacman added');
	var ghosts = [];
	console.log('Ghosts array created');
	var powerPellets = [];
	console.log('PowerPellets array created');
	pacman.x = (LK.stageContainer.width - pacman.width) / 2 + 100;
	pacman.y = (LK.stageContainer.height - pacman.height) / 2 + 100;
	console.log('Pacman positioned away from the corner');
	var dots = [];
	var blockSize = 200;
	for (var i = 0; i < 20; i++) {
		for (var j = 0; j < 20; j++) {
			if (i === 0 || i === 19 || j === 0 || j === 19) {
				var dot = new Dot();
				dot.x = (i - j) * blockSize / 2 + LK.stageContainer.width / 2;
				dot.y = (i + j) * blockSize / 4;
				dots.push(dot);
				self.addChild(dot);
			}
		}
	}
	LK.on('tick', function () {
		for (var i = 0; i < ghosts.length; i++) {
			ghosts[i].move();
		}
		for (var i = 0; i < dots.length; i++) {
			if (pacman.intersects(dots[i])) {
				dots[i].eatDot();
				dots.splice(i, 1);
				break;
			}
		}
	});
	pacman.on('down', function (obj) {
		var ghost = new Ghost();
		console.log('Ghost created:', ghost);
		ghost.x = pacman.x;
		ghost.y = pacman.y;
		ghosts.push(ghost);
		self.addChild(ghost);
	});
	LK.on('keydown', function (e) {
		console.log('Key pressed: ', e.key);
		switch (e.key) {
			case 'ArrowUp':
			case 'w':
				pacman.y -= 10;
				break;
			case 'ArrowDown':
			case 's':
				pacman.y += 10;
				break;
			case 'ArrowLeft':
			case 'a':
				pacman.x -= 10;
				console.log('Pacman position:', pacman.x, pacman.y);
				break;
			case 'ArrowRight':
			case 'd':
				pacman.x += 10;
				break;
			default:
				break;
		}
	});
});

===================================================================
--- original.js
+++ change.js
@@ -90,26 +90,22 @@
 		console.log('Key pressed: ', e.key);
 		switch (e.key) {
 			case 'ArrowUp':
 			case 'w':
-				pacman.x += 10;
-				pacman.y -= 5;
+				pacman.y -= 10;
 				break;
 			case 'ArrowDown':
 			case 's':
-				pacman.x -= 10;
-				pacman.y += 5;
+				pacman.y += 10;
 				break;
 			case 'ArrowLeft':
 			case 'a':
 				pacman.x -= 10;
-				pacman.y -= 5;
 				console.log('Pacman position:', pacman.x, pacman.y);
 				break;
 			case 'ArrowRight':
 			case 'd':
 				pacman.x += 10;
-				pacman.y += 5;
 				break;
 			default:
 				break;
 		}