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Learn how to move your sprite. Also learn how to use methods of the Debug class.

Revised: Sun May 08 09:19:08 CDT 2016

This page is part of a Book titled XNA Game Studio .

Table of Contents


This module is one in a collection of modules designed primarily for teaching GAME 1343 Game and Simulation Programming I at Austin Community College in Austin, TX. These modules are intended tosupplement and not to replace the textbook.

An earlier module titled Getting Started provided information on how to get started programming with Microsoft's XNA Game Studio.

Viewing tip

I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the Figuresand Listings while you are reading about them.



  • Listing 1 . Skeleton code for a new Windows Game project.
  • Listing 2 . Declare variables that specify the incremental distance to move.
  • Listing 3 . Beginning of the overridden Update method.
  • Listing 4 . Test for sprite out of bounds horizontally.
  • Listing 5 . Test for sprite out of bounds vertically.
  • Listing 6 . Change the current position of the sprite.
  • Listing 7 . The remainder of the overridden Update method.
  • Listing 8 . Overridden LoadContent method.
  • Listing 9 . The class named Game1 for the project named XNA0120Proj.

General background information

The earlier module titled Xna0118-The XNA Framework and the Game Class used a very simple XNA program to teach many of the details regarding the incorporation ofthe XNA framework into the object-oriented C# programming language.

Skeleton code

When you create a new Windows Game project using Visual C#, a source code file named Game1.cs is automatically created and opened in the editor window. The file contains skeleton code for a windows gamebased on XNA. Listing 1 shows the skeleton code contained in the file named Game1 (with most of the comments deleted for brevity).

Listing 1 . Skeleton code for a new Windows Game project.

using System; using System.Collections.Generic;using System.Linq; using Microsoft.Xna.Framework;using Microsoft.Xna.Framework.Audio; using Microsoft.Xna.Framework.Content;using Microsoft.Xna.Framework.GamerServices; using Microsoft.Xna.Framework.Graphics;using Microsoft.Xna.Framework.Input; using Microsoft.Xna.Framework.Media;namespace WindowsGame2 {public class Game1 : Microsoft.Xna.Framework.Game {GraphicsDeviceManager graphics; SpriteBatch spriteBatch;public Game1() {graphics = new GraphicsDeviceManager(this); Content.RootDirectory = "Content";} protected override void Initialize(){ // TODO: Add your initialization logic herebase.Initialize(); }protected override void LoadContent() {// Create a new SpriteBatch, which can be used to draw textures. spriteBatch = new SpriteBatch(GraphicsDevice);// TODO: use this.Content to load your game content here }protected override void UnloadContent() {// TODO: Unload any non ContentManager content here }protected override void Update(GameTime gameTime) {// Allows the game to exit if(GamePad.GetState(PlayerIndex.One).Buttons.Back==ButtonState.Pressed)this.Exit(); // TODO: Add your update logic herebase.Update(gameTime); }protected override void Draw(GameTime gameTime) {GraphicsDevice.Clear(Color.CornflowerBlue); // TODO: Add your drawing code herebase.Draw(gameTime); }} }

Questions & Answers

anyone know any internet site where one can find nanotechnology papers?
Damian Reply
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
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