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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

Preface

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.

Figures

Listings

  • 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

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
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John Reply
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A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
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Jude
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David
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Youesf Reply
what is inorganic
emma
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Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
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Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
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Maurice Reply
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Maurice
answer
Magreth
progressive wave
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Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
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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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