Game Programming Class1

Discuss Syllabus

Software

• Visual Studio 2010 available from MSDN
  • In VS2012 you need to do some extra steps
  • IN windows* you need more extra steps http://answers.microsoft.com/en-us/windows/forum/windows_cp-windows_programs/xna-game-studio-4-fails-to-install/b4b9b277-eb60-41dd-8a17-0c3020253ebc
    • http://ryan-lange.com/xna-game-studio-4-0-visual-studio-2012/
• XNA 4.0 http://create.msdn.com/en-us/home/getting_started
  • requirements http://msdn.microsoft.com/en-us/library/bb203925.aspx
• DirectX SDK http://msdn.microsoft.com/en-us/directx/aa937788.aspx

What is XNA?

Discussion

XNA Overview

Why do we need it?

Why not use c++?

Major changes in XNA 4

• What's new http://msdn.microsoft.com/en-us/library/bb417503.aspx
• Graphics Profiles
  • Reach HLSL 2.0
  • HiDef HLSL 3.0 platform showcase features

What is DirectX?

show c++ examples

quick start guide - create

Hello World

Hello World in XNA 4.0 using spritefont. We'll revisit the spriteFont when we build the console/debug class

Hello XNA with texture

Simple xna project that draws a pacman sprite

• Start a new XNA Project

Add two variable declarations at the top of the class <csharp>

           Texture2D PacMan;
           Vector2 PacManLoc;

</csharp> In the LoadContent Function add the following code to initialize the two variables declared above <csharp>

       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
           //load PacMan image
           PacMan = Content.Load<texture2d>("pacmanSingle");
           //Center PacMan image
           PacManLoc = new Vector2(graphics.GraphicsDevice.Viewport.Width / 2, graphics.GraphicsDevice.Viewport.Height / 2);
       }

</csharp>

• Add the following code to the Draw Method to Draw the texture

<csharp> protected override void Draw(GameTime gameTime)

       {
           graphics.GraphicsDevice.Clear(Color.CornflowerBlue);

           // TODO: Add your drawing code here
           spriteBatch.Begin();
           spriteBatch.Draw(PacMan, PacManLoc, Color.White);
           spriteBatch.End();

           base.Draw(gameTime);
       }

</csharp> pacman image is availble here:

the full game1.cs file should look like

[http://brookfield.rice.iit.edu/jmeyers/gbrowser.php?file=/ITM496-595/ClassSource/Projects/IntroSimpleSpriteWindows/IntroSimpleSpriteWindows/Game1.cs IntroSimpleSpriteWindows/Game1.cs]

the build of the game will look like

Simple 2D texture example with update

HomeWork

Install VS2010 get XNA 4 http://www.microsoft.com/download/en/details.aspx?id=23714

Create an XNA Picture. The picture needs to have at least

• 1 SpriteFont
• 3 Textures

Also please post a screen shot of your project running in the assignments. Zip and upload source to blackboard.

You can take a screen shot using the snip tool. Start run snip in vista or 7. Or you can just press the Print Screen key on the keyboard.