===================================================================
--- original.js
+++ change.js
@@ -52,8 +52,11 @@
 	};
 	self.down = function (x, y, obj) {
 		self.vy = -10; // jump
 	};
+	self.move = function (x, y, obj) {
+		// Add movement logic here
+	};
 });
 //<Assets used in the game will automatically appear here>
 // Platform class
 var Platform = Container.expand(function () {