Microsoft XNA

Last updated

Microsoft XNA
Microsoft XNA logo.svg
Developer(s) Microsoft Gaming
Target platform(s) Xbox 360, Windows, Windows Phone
Editor software XNA Game Studio
Player software XNA Runtime
Format(s)XNB
Programming language(s) C# and Visual Basic .NET [1] (officially)
Application(s) Video games, console games, mobile games
StatusDiscontinued [2] [3] [4]
License Freeware
Website msdn.microsoft.com/xna/   OOjs UI icon edit-ltr-progressive.svg

Microsoft XNA (a recursive acronym for XNA's not acronymed) [5] is a freeware set of tools with a managed runtime environment that Microsoft Gaming developed to facilitate video game development. XNA is based on .NET Framework, with versions that run on Windows and Xbox 360. XNA Game Studio can help develop XNA games. The XNA toolset was announced on March 24, 2004, at the Game Developers Conference in San Jose, California. A first Community Technology Preview of XNA Build was released on March 14, 2006.

Contents

In many respects, XNA can be thought of as a .NET analog to Microsoft's better known game development system, DirectX, but it is aimed at developers primarily interested in writing lightweight games. XNA is the basic platform for Xbox Live Indie Games.

As of January 2013, XNA is no longer being developed, [6] and it is not compatible with Windows Runtime (the API for developing Metro-style apps), which was introduced with Windows 8. [7]

Overview

XNA Framework

Microsoft XNA Framework is based on the native implementation of .NET Compact Framework 2.0 for Xbox 360 development and .NET Framework 2.0 on Windows. It includes an extensive set of class libraries, specific to game development, to promote maximum code reuse across target platforms. The framework runs on a version of the Common Language Runtime that is optimized for gaming to provide a managed execution environment. The runtime is available for Windows XP, Windows Vista, Windows 7, Windows Phone and Xbox 360. Since XNA games are written for the runtime, they can run on any platform that supports the XNA Framework with minimal or no modification. Games that run on the framework can technically be written in any .NET-compliant language, but only C# in XNA Game Studio Express IDE and all versions of Visual Studio 2008 and 2010 (as of XNA 4.0) [8] [ failed verification ] are officially supported. [9] Support for Visual Basic .NET was added in 2011. [10]

The XNA Framework encapsulates low-level technological details involved in coding a game, making sure that the framework itself takes care of the difference between platforms when games are ported from one compatible platform to another, and thereby allowing game developers to focus more on the content and gaming experience. The XNA Framework integrates with a number of tools, such as the Cross-platform Audio Creation Tool (XACT), to aid in content creation.

The XNA Framework provides support for both 2D and 3D game creation and allows use of the Xbox 360 controllers and vibrations. XNA framework games that target the Xbox 360 platform could only be distributed by members of the Microsoft XNA Creator's Club/App Hub, which carried a $99/year subscription fee. [9] Desktop applications can be distributed free of charge under Microsoft's current licensing.

XNA Build

XNA Build is a set of game asset pipeline management tools, which help by defining, maintaining, debugging, and optimizing the game asset pipeline of individual game development efforts. A game asset pipeline describes the process by which game content, such as textures and 3D models, are modified to a form suitable for use by the gaming engine. XNA Build helps identify the pipeline dependencies, and also provides API access to enable further processing of the dependency data. The dependency data can be analyzed to help reduce the size of a game by finding content that is not actually used. For example, XNA Build analysis revealed that 40% of the textures that shipped with MechCommander 2 were unused and could have been omitted. [11]

XNA Game Studio

XNA Game Studio is a programming environment for development of games. [12] Five revisions have been released so far, but as of 2015, no new versions will be developed. [13]

XNA Game Studio Express was the first version released on August 30, 2006, and was intended for students, hobbyists, and independent game developers. [14] [15] It was available as a free download. Express provides basic "starter kits" for rapid development of specific genres of games, such as platform games, real-time strategy, and first-person shooters. Developers could create Windows games for free with the XNA Framework, but to run their games on the Xbox 360 they will have to pay an annual fee of US$99 (or a four-month fee of US$49) for admission to the Microsoft XNA Creator's Club. With an update, XNA developers could compile Xbox 360 binaries and share them with other Microsoft XNA Creator's Club members.

XNA Game Studio 2.0 was released on December 13, 2007. [16] XNA Game Studio 2.0 features the ability to be used with all versions of Visual Studio 2005 (including the free Visual C# 2005 Express Edition), [17] a networking API using Xbox Live on both Windows and Xbox 360 and better device handling. [18]

XNA Game Studio 3.0 (for Visual Studio 2008 or the free Visual C# 2008 Express Edition) allows production of games targeting the Zune platform and adds Xbox Live community support. It was released on October 30, 2008, and supported C# 3.0, LINQ and most versions of Visual Studio 2008.

XNA Game Studio 4.0 was released on September 16, 2010. [19] It added support for the Windows Phone platform (including 3D hardware acceleration), framework hardware profiles, configurable effects, built-in state objects, graphics device scalars and orientation, cross-platform and multi-touch input, microphone input and buffered audio playback, and Visual Studio 2010 integration. [20]

XNA "Game Studio 4.0 Refresh" was released on 6 October 2011, and added support for Windows Phone 7.5 (Mango), and Visual Basic. [21]

XNA Framework Content Pipeline

The XNA Framework Content Pipeline is a set of tools that allows Visual Studio and XNA Studio to act "as the key design point around organizing and consuming 3D content". [12]

XDK Extensions

Formerly known as XNA Game Studio Professional, XDK Extensions is an add-on to XNA Game Studio and requires the Microsoft Xbox 360 Development Kit. [22] Both are only available for licensed Xbox developers. The extensions include additional managed APIs for achievements, leaderboards, and other features reserved for licensed game titles. Titles developed using XDK Extensions include winners of Microsoft's Dream.Build.Play competition among others. The most heavily publicized of these was The Dishwasher: Dead Samurai .

License agreement

The Microsoft XNA Framework 2.0 EULA specifically prohibits the distribution of commercial networked games that connect to Xbox Live and/or Games for Windows Live in the absence of a specific agreement signed by both the developer and Microsoft. [23] This means that XNA Game Studio can still be used to develop commercial games and other programs for the Windows platform, although Microsoft's networking support code for Xbox/Windows Live cannot be used. Self-developed network code can still be used inside the developer's XNA project.[ citation needed ]

Games created using XNA Game Studio may be distributed via the Windows Phone marketplace, and formerly via Xbox Live Indie Games. [24] The software may also be used to create commercial games which target Windows.[ citation needed ]

Dream Build Play

Dream Build Play was an annual and global $75,000 Microsoft contest promoting Microsoft XNA and eventually Xbox Live Indie Games, although it predated it. The contest was first announced in 2006 and first opened in January 2007. [25] Many winners are notable developers in the Indie game community.

Xbox Live Indie Games

Xbox 360 games written in XNA Game Studio could be submitted to the App Hub, [26] for which premium membership was required (about US$99/year). All games submitted to the App Hub were subjected to peer review by other creators. If the game passed review then it would be listed on Xbox Live Marketplace. Creators could set a price of 80, 240 or 400 points for their game. The creator is paid 70% of the total revenue from their game sales as a baseline. Microsoft originally planned to take an additional percentage of revenue if they provided additional marketing for a game, but this policy was rescinded in March 2009, leaving the flat rate intact regardless of promotion. [27]

Microsoft also distributed a free year premium App Hub subscription for educational establishments through their DreamSpark program and MSDNAA. These accounts allowed students to develop games for the Xbox 360, but developers still needed a premium Xbox Live account to submit their game to the marketplace.

Alternative implementations

A project called Mono.XNA was formed to port XNA to the open source and cross-platform Mono framework. [28]

From the codebase of Mono.XNA and SilverSprite, a new project called MonoGame was formed to port XNA to several mobile devices. [29] As of version 3.0.1 (released March 3, 2013), support is stable for iOS, Android including OUYA, macOS, Linux and Metro for Windows 8, Windows RT and Windows Phone 8, as well as PlayStation Mobile in 2D. PlayStation Mobile 3D and Raspberry Pi development are currently in progress. [30]

FNA [31] is a full-featured open source reimplementation of XNA forked from MonoGame. The goal of FNA is to preserve the XNA game library by reimplementing XNA itself.

An open source project called Grommet contains a limited port for embedded devices using the .NET Micro Framework. [32]

A project called ANX is available which implements its own version of XNA using the SharpDX stack; support for Linux, macOS and the PlayStation Vita is in progress as well. [33] [34] Using ANX, developers are able to write games using code that is very similar to XNA, while still being considered a Metro application in Windows 8.

See also

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References

  1. ↑ "XNA Game Studio 4.0 Refresh". September 29, 2011.
  2. ↑ Rose, Mike (February 1, 2013). "It's official: XNA is dead". Gamasutra.
  3. ↑ "XNA Is Dead: 3 Alternatives That Let You Use Your C# Skills". Lifehacker. February 2, 2013.
  4. ↑ Williams, Chris. "XNA is Dead; Long Live the New XNA, MonoGame". Code Magazine. Retrieved May 8, 2016.
  5. ↑ "DirectX Developer Center: XNA Frequently Asked Questions". MSDN . Microsoft. August 20, 2006. Archived from the original on August 20, 2006. Retrieved May 17, 2021.
  6. ↑ Crossley, Rob (January 31, 2013). "Microsoft email confirms plan to cease XNA support". Computer and Video Games . Future Publishing.
  7. ↑ Klepek, Patrick (September 16, 2011). "The Future of XNA Game Studio and Windows 8". Giant Bomb .
  8. ↑ "App Hub - downloads". Archived from the original on February 4, 2015.
  9. 1 2 "XNA Frequently Asked Questions". MSDN . September 8, 2009. Archived from the original on September 8, 2009. Retrieved February 21, 2023.
  10. ↑ "Code Sample Details - Game State Management (Mango, C#/VB)". Xbox MSDN . Microsoft. May 24, 2011. Archived from the original on June 4, 2013. Retrieved June 15, 2013.
  11. ↑ "Will XNA tools be able to help reduce game sizes?". MSDN . January 24, 2006. Archived from the original on February 6, 2006.
  12. 1 2 "Developing games". MSDN . July 31, 2012. Archived from the original on August 30, 2012. Retrieved March 20, 2007.
  13. ↑ Hruska, Joel (February 1, 2013). "Microsoft kills XNA". ExtremeTech .
  14. ↑ "Microsoft Invites the World to Create Its Own Xbox 360 Console Games for the First Time". Microsoft . August 13, 2006. Archived from the original on August 20, 2006.
  15. ↑ "XNA Game Studio Express". MSDN . Archived from the original on September 7, 2008. Retrieved February 21, 2023.
  16. ↑ "XNA Creators Club Online - Quick Start Guide". MSDN . Archived from the original on September 7, 2008.
  17. ↑ "XNAtutorial.com". XNA Tutorial. Archived from the original on October 23, 2006.
  18. ↑ "XNA Team Blog : XNA Game Studio 2.0 Released". MSDN . Archived from the original on August 26, 2009. Retrieved December 13, 2007.
  19. ↑ "XNA Game Studio 4.0 Available for Download". XNA Game Studio Team Blog. Microsoft. September 16, 2010. Archived from the original on August 7, 2011. Retrieved September 16, 2010.
  20. ↑ "What's New in XNA Game Studio 4.0". MSDN. Microsoft. Archived from the original on September 19, 2008. Retrieved September 16, 2010.
  21. ↑ "XNA Game Studio 4.0 Refresh". Downloads. Microsoft. October 6, 2011.
  22. ↑ "Download GDC 2009: XNA Game Studio Program Overview from Official Microsoft Download Center". Microsoft.com. Archived from the original on July 24, 2010. Retrieved June 15, 2013.
  23. ↑ XNA Game Studio 2.0 Software License Terms [ dead link ]
  24. ↑ Winterhalter, Ryan (April 29, 2011). "31 Homebrew Games Worth Playing". 1UP.com . Archived from the original on May 3, 2011. Retrieved May 1, 2011.
  25. ↑ Dream Build Play, Alfred Thompson
  26. ↑ "App Hub". Create MSDN. Archived from the original on October 12, 2010.
  27. ↑ "Download History News". Archived from the original on March 31, 2009. Retrieved March 30, 2009.
  28. ↑ "Mono.XNA" . Retrieved April 8, 2009.
  29. ↑ "MonoGame: Write Once, Play Everywhere" . Retrieved March 24, 2013.
  30. ↑ "MonoGame Wiki". GitHub . Retrieved March 24, 2013.
  31. ↑ "About FNA". FNA. Retrieved February 21, 2023.
  32. ↑ "Grommet - A .NET Micro Framework Library". CodePlex . Archived from the original on November 4, 2009. Retrieved November 2, 2009.
  33. ↑ "AXN.Framework". CodePlex . Archived from the original on November 28, 2011.
  34. ↑ "SharpDX". SharpDX. Archived from the original on January 16, 2023. Retrieved February 21, 2023.

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