<< Chapter < Page Chapter >> Page >

Run the program

I encourage you to copy the code from Listing 9 . Use that code to create an XNA project. Compile and run the project. Experiment with the code, makingchanges, and observing the results of your changes. Make certain that you can explain why your changes behave as they do.

Run my program

Click here to download a zip file containing my version of the program. Extract the folder named XNA0120Proj from the zip file and save it somewhere on your disk. Start Visual C# 2010 Express and select Open Project... from the File menu. Navigate to the project folder and select the file with the extension of .sln . This should cause the project to open and be ready to run or debug as described in the earlier module titled Getting Started .


In this module, you learned how to make it appear that a sprite is moving by changing the current position coordinates of the sprite in the Update method and drawing the sprite in the new position in the Draw method. This takes place once during each iteration of the game loop.

You also learned how to use the WriteLine method of the Debug class to display information while the program is running.


This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Xna0120-Moving Your Sprite and using the Debug Class
  • File: Xna0120.htm
  • Published: 02/28/14

Financial : Although the Connexions site makes it possible for you to download a PDF file for thismodule at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, you should beaware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version of the module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale on Amazon.com showing me as the author. Ineither receive compensation for those sales nor do I know who does receive compensation. If you purchase such a book, please beaware that it is a copy of a module that is freely available on cnx.org and that it was made and published withoutmy prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

Complete program listing

A complete listing of the XNA program discussed in this module is provided in Listing 9 .

Listing 9. The class named Game1 for the project named XNA0120Proj.

/*Project XNA0120Proj * 12/27/09 R.G.Baldwin*******************************************************/ 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; using Microsoft.Xna.Framework.Net;using Microsoft.Xna.Framework.Storage; using System.Diagnostics;//to access Debugnamespace XNA0120Proj { public class Game1 : Microsoft.Xna.Framework.Game {GraphicsDeviceManager graphics; SpriteBatch spriteBatch;public Game1() { graphics = new GraphicsDeviceManager(this);Content.RootDirectory = "Content"; }// end constructorprotected override void Initialize() { //No initialization neededbase.Initialize(); }//end Initialize//Declare two variables Texture2D myTexture;Vector2 spritePosition = new Vector2(10.0f,15.0f); protected override void LoadContent() {//Create a new SpriteBatch, which can be used to // draw textures.spriteBatch = new SpriteBatch(GraphicsDevice); //Load the imagemyTexture = Content.Load<Texture2D>( "gorightarrow");//Debug code for illustration purposes. Debug.WriteLine(myTexture.Width);Debug.WriteLine(myTexture.Height); Debug.WriteLine(Window.ClientBounds.Width);Debug.WriteLine(Window.ClientBounds.Height); Debug.WriteLine(IsFixedTimeStep);Debug.WriteLine(TargetElapsedTime); }//end LoadContentprotected override void UnloadContent() { //No unload code needed.}//end UnloadContent //Specify the distance in pixels that the sprite// will move during each iteration. int stepsX = 5;int stepsY = 3; protected override void Update(GameTime gameTime) {// Allows the game to exit if(GamePad.GetState(PlayerIndex.One).Buttons.Back== ButtonState.Pressed) this.Exit();//New code begins here. //Test to determine if the sprite moves out of the// game window on the right or the left. if(((spritePosition.X + myTexture.Width)>Window.ClientBounds.Width) ||(spritePosition.X<0)){ stepsX *= -1;//Out of bounds, reverse direction}//end if //Test to determine if the sprite moves out of the// game window on the bottom or the top. if(((spritePosition.Y + myTexture.Height)>Window.ClientBounds.Height) ||(spritePosition.Y<0)) { stepsY *= -1;//Out of bounds, reverse direction}//end if spritePosition.X += stepsX;//move horizontalspritePosition.Y += stepsY;//move vertical //The following statement is always required.base.Update(gameTime); }//end Updateprotected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.CornflowerBlue); // Draw the sprite.spriteBatch.Begin(); spriteBatch.Draw(myTexture,spritePosition,Color.White); spriteBatch.End();//This statement is always required. base.Draw(gameTime);}//end Draw method }//End class}//End namespace


Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Xna game studio. OpenStax CNX. Feb 28, 2014 Download for free at https://legacy.cnx.org/content/col11634/1.6
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Xna game studio' conversation and receive update notifications?