XNA-in-a-Day
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Slides presented at XNA-in-a-Day events. It walks through the creation of an XNA Windows game. Download the files at http://bit.ly/XNADayFiles.
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XNA-in-a-Day
- 1. XNA-in-a-Day Introduction to XNA Game Studio
- 2. Ed Donahue I love my life because… I get to travel! @creepyed creepyed.com Academic Developer Evangelist I love my job because… I love my life because… Mid-Atlantic Region I help people build cool I have random dance parties! (MD, DC, VA, WV, NC, SC) technology! Developer & Platform Evangelism (DPE) I love my job because… I get to share my passion for technology with students!
- 4. The Tools You Need • A computer – A decent card if you want graphics acceleration • Windows – Windows 7 works well • Visual Studio or Visual C# – Visual Studio 2010 Professional – available to students through DreamSpark • XNA Game Studio – Current version – XNA Game Studio 4.0 ed.donahue@microsoft.com | creepyed.com | @creepyed
- 6. What is DreamSpark? o DreamSpark provides free Microsoft software to verified students around the world for FREE! Who is eligible for DreamSpark? o All part-time and full-time students are entitled to DreamSpark software What software can they get from DreamSpark? o Visual Studio 2010 Professional, Expression Studio 4 Ultimate, Windows Server, SQL Server o Free appHub account for Windows Phone 7 Marketplace o One year free subscription to XNA Creators Club o 90 days of free Pluralsight training
- 7. www.DreamSpark.com to register
- 8. Visual Studio • Integrated Development Environment • Main code window • Solution Explorer • Toolbars and menus ed.donahue@microsoft.com | creepyed.com | @creepyed
- 9. Creating a game • Create new project • Basic structure of game project – Initialize – LoadContent (and UnloadContent) – Update – Draw • GraphicsDeviceManager • SpriteBatch (we’ll revisit) ed.donahue@microsoft.com | creepyed.com | @creepyed
- 11. Adding Assets • http://bit.ly/XNADayFiles • Content – what is it • Add content to project ed.donahue@microsoft.com | creepyed.com | @creepyed
- 12. Preparing Assets (Background) • Texture2D • ContentManager • Content.Load • viewPortRect ed.donahue@microsoft.com | creepyed.com | @creepyed
- 13. Using Assets • Draw() method • 2D graphical assets - SpriteBatch ed.donahue@microsoft.com | creepyed.com | @creepyed
- 14. Now for some fun stuff • Cannon – Loaded in the same way – Drawn in the same way – Not quite! ed.donahue@microsoft.com | creepyed.com | @creepyed
- 15. GameObject Class • Sprite Texture • Position – Vector2.Zero • Center • Rotation – Float ed.donahue@microsoft.com | creepyed.com | @creepyed
- 16. Cannon Take 2 • Declare • Load – and set position • Draw – Using GameObject properties … • Interact ed.donahue@microsoft.com | creepyed.com | @creepyed
- 17. INTERACTION
- 18. Interaction Part 1 • Cannon Rotation – Shorthand operator += – Thumbstick – Restricting movement • Keyboard control too – Conditional compilation #if • Change Draw method ed.donahue@microsoft.com | creepyed.com | @creepyed
- 19. Cannonballs - setup • GameObject updates – Velocity – Alive • Constants and Arrays • Loops – for – foreach and condition to draw ed.donahue@microsoft.com | creepyed.com | @creepyed
- 20. Interaction Part 2 • State – GamePad and Keyboard – Define objects – Retrieve and save state ed.donahue@microsoft.com | creepyed.com | @creepyed
- 21. Cannonballs - firing • Buttons.A == ButtonState.Pressed – Previous state should be Released (make them work for it) • Automatic Method creation • Rotation in Radians – Cos/Sin math functions • return to exit loop ed.donahue@microsoft.com | creepyed.com | @creepyed
- 22. Cannonballs - moving • Position + Velocity • Is it still visible? – viewPortRect.Contains(Point) ed.donahue@microsoft.com | creepyed.com | @creepyed
- 23. Something to shoot at (1) • Same as cannonballs – Array Declaration – Load Content – Draw – Update if alive ed.donahue@microsoft.com | creepyed.com | @creepyed
- 24. Something to shoot at (2) • Different from cannonballs – Update if not alive – Set Velocity – Set Position – Set Alive ed.donahue@microsoft.com | creepyed.com | @creepyed
- 25. Introducing randomness • Random • Random.NextDouble • Lerp - MathHelper function – Interpolate number within range ed.donahue@microsoft.com | creepyed.com | @creepyed
- 26. Contact! • Compare cannonballs and enemies • Create virtual Rectangles • Check Intersect ed.donahue@microsoft.com | creepyed.com | @creepyed
- 27. Scoring - SpriteFont • Create • Declare • Load • Draw ed.donahue@microsoft.com | creepyed.com | @creepyed
- 28. WHERE TO NEXT?
- 29. Particle System • Use – 2D textures – Randomness – Rotation, velocity, position ed.donahue@microsoft.com | creepyed.com | @creepyed
- 30. Imagine Cup VIDEOS! ed.donahue@microsoft.com | creepyed.com | @creepyed
- 31. Windows Phone 7 • Converting to Windows Phone 7 (or Xbox 360). • Add touch support • Take it to the next level ed.donahue@microsoft.com | creepyed.com | @creepyed
- 32. Windows Phone 7 - Touch • Add Reference • Get TouchPanel state • Check TouchLocation state ed.donahue@microsoft.com | creepyed.com | @creepyed
- 33. Starter Kits • Platformer • RPG • Space Shooter • Racing ed.donahue@microsoft.com | creepyed.com | @creepyed
- 34. ScriptTD • Tower defense game engine • Customizable images and audio • scriptTD.codeplex.com ed.donahue@microsoft.com | creepyed.com | @creepyed