===================================================================
--- original.js
+++ change.js
@@ -54,8 +54,12 @@
 	});
 	self.speed = 10;
 	self.update = function () {
 		// Player update logic
+		self.y += self.speed;
+		if (self.y > 2500) {
+			self.y = 2500;
+		}
 	};
 });
 
 /**** 
@@ -88,17 +92,13 @@
 // Initialize bullets
 var bullets = [];
 // Handle player movement
 game.down = function (x, y, obj) {
-	player.x = x;
+	player.speed = -30;
 };
 // Handle shooting
 game.up = function (x, y, obj) {
-	var bullet = new Bullet();
-	bullet.x = player.x;
-	bullet.y = player.y;
-	bullets.push(bullet);
-	game.addChild(bullet);
+	player.speed = 10;
 };
 // Game update loop
 game.update = function () {
 	// Update player