Game Programming Class1

Discuss Syllabus

Software

• Visual Studio 2005 available from MSDN (VS2008 work with XNA 3.0 CTP but not with XNA 2.0)</li>
• XNA 2.0 GSE <a href="http://creators.xna.com/en-US/downloads">http://creators.xna.com/en-US/downloads</a></li>
• Direct X SDK <a href="http://msdn.microsoft.com/en-us/directx/aa937788.aspx">http://msdn.microsoft.com/en-us/directx/aa937788.aspx</a>

==What is XNA?==

Discussion

Why do we need it?

Why not use c++?

What is DirectX?

show c++ examples

<a href="http://creators.xna.com/en-US/create_detail">quick start guide - create</a>
How much c# do you know?

==in class

Simple 2D texture demo

Simple xna project that draws a pacman sprite

Demo

Start a new XNA Project

Add two varibale declareations at the top of the class

			Texture2D PacMan;
            Vector2 PacManLoc;
			

In the Load_Content Funtion add the following code to initialize the two varibales declared above

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

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

			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);
        }
			

pacman image is availble @ <a href=""> pacmanSingle.png</a> <img src="">

the full game1.cs file should look like <a href="http://brookfield.rice.iit.edu/jmeyers/gbrowser.php?file=/ITM496-595/ClassSource/Projects/IntroSimpleSpriteWindows/IntroSimpleSpriteWindows/Game1.cs"> IntroSimpleSpriteWindows/Game1.cs </a>

the build of the game will look like <img src="ClassSource/Images/IntroSimpleSpriteWindows.png">

Simple 2D texture example with update