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GoldSrc

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GoldSrc
Other namesGoldSource, Half-Life Engine
Developer(s)Valve, id Software
Initial releaseNovember 19, 1998; 25 years ago (1998-11-19)
Written inC, C++, Assembly language
PredecessorQuake engine
SuccessorSource Engine
LicenseProprietary

GoldSrc (pronounced "gold source"), sometimes called the Half-Life engine, is a proprietary game engine developed by Valve. At its core, GoldSrc is a heavily modified version of id Software's Quake engine. It made its debut in 1998 with Half-Life and powered future games developed by or with oversight from Valve, including Half-Life's expansions, Day of Defeat and games in the Counter-Strike series.

GoldSrc was succeeded by the Source engine with the releases of Half-Life: Source, Half-Life 2, and Counter-Strike: Source in 2004.

Development

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The basis of GoldSrc is the engine used in the video game Quake, albeit with heavy modification by Valve. While the engine served as the basis for GoldSrc, Gabe Newell said that a majority of the code used in the engine was created by Valve. GoldSrc's artificial intelligence systems, for example, were essentially made from scratch.[1] The engine also uses some code from other games in the Quake series, including QuakeWorld and Quake II.[2]

In 1997, Valve hired Ben Morris and acquired Worldcraft, a tool for creating custom Quake maps.[3][better source needed] The tool was renamed Valve Hammer Editor and became the official mapping tool for GoldSrc. The engine supports skeletal animation, which allowed for more realistic body kinematics and facial expression animations than most other engines at the time of release.[4]

The GoldSrc engine initially had no real name and was simply called the Half-Life engine. When the need arose for Valve to work on the engine without risking introducing bugs into Half-Life's codebase, Valve forked the code, creating two main engine branches: one gold master branch, "GoldSrc", and the other "Src". Internally, any games using the original branch were referred to as "Goldsource" to differentiate it from the second branch, while the "Src" branch evolved into the Source engine.[5]

Valve released versions of the GoldSrc engine for OS X and Linux in 2013, eventually porting all of their first-party games using the engine to the platforms by the end of the year.[6][7]

History

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Half-Life series

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See also: Half-Life series

Half-Life was Valve's debut title and the first to use GoldSrc. It received critical acclaim, winning over fifty PC Game of the Year awards.[8] The game was followed up with two expansions, Half-Life: Opposing Force and Half-Life: Blue Shift, both of which ran GoldSrc and were developed by Gearbox Software.[9][10] Half-Life: Decay, an expansion pack for Half-Life only released on PlayStation 2, was released in 2001 alongside Half-Life's debut on the platform.[11] Unlike other games in the series, it never received an official version for Windows, however an unofficial version of the game was released by independent developers in 2008.[12][13][14] Half-Life: Decay was the final iteration in the Half-Life series to run on GoldSrc, with all future entries in the series using the Source and Source 2 engines.[15][16]

Other Valve games

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Valve developed several games using the GoldSrc engine, many of which were based on original user-made modifications. Valve's Team Fortress Classic, released in 1999, was developed primarily by two of the developers of the Quake mod Team Fortress.[17] Counter-Strike and Day of Defeat were also originally Half-Life modifications that Valve purchased the rights to and re-released as standalone titles.[18][19] Counter-Strike evolved into its own series with the debut of the Japanese arcade game Counter-Strike Neo in 2003[20] and Valve's own follow-up in 2004, Counter-Strike: Condition Zero, both of which run on the GoldSrc engine.[21][22] Although Valve's further installments in the series starting with Counter-Strike: Source use the newer Source engine instead, Counter-Strike Online and Counter-Strike Nexon: Zombies, two spinoff titles released by Nexon in 2008 and 2014 respectively, use GoldSrc as their basis.

Third-party games and modifications

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See also: List of GoldSrc mods

The GoldSrc engine was also used for a variety of third-party games and modifications not directly developed by Valve. Rewolf Software used the engine for the game Gunman Chronicles in 2000, and the PC version of James Bond 007: Nightfire was developed by Gearbox Software using a modified version of GoldSrc in 2002.[23][24][25]

Unofficial, community-made modifications of GoldSrc have also been produced. Notable games include Natural Selection, Cry of Fear and Sven Co-op, with Valve's Team Fortress Classic, Counter-Strike, and Day of Defeat all being based on GoldSrc mods of the same names. Sven Co-op have since been released for free as a standalone game on Steam, which use a licensed derivative of the engine with their own customizations.

The Xash3D project and forks use Quake engine source code in part, as well as the Half-Life SDK, to recreate GoldSrc and run its various mods on different platforms.[26][27][28][29] The FreeHL and FreeCS ports also utilize QuakeWorld code as well as clean-room reverse engineering.[30]

Games using GoldSrc

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Year Title Developer(s) Publisher(s)
1998 Half-Life Valve Sierra Entertainment, Valve (digital)
1999 Half-Life: Opposing Force Gearbox, Valve
Team Fortress Classic Valve Valve, Sierra Entertainment (digital)
Sven Co-op Sven Co-op team Sven Co-op team
2000 Counter-Strike Valve Sierra Entertainment
Gunman Chronicles Rewolf Entertainment Sierra Entertainment
Ricochet Valve Valve
2001 Deathmatch Classic
Half-Life: Blue Shift Gearbox, Valve Sierra Entertainment, Valve (digital)
Half-Life: Decay Gearbox Sierra Entertainment
2002 James Bond 007: Nightfire Eurocom, Gearbox Electronic Arts
2003 Day of Defeat Valve Activision, Valve (digital)
Counter-Strike Neo Namco Namco
2004 Counter-Strike: Condition Zero Valve, Ritual Entertainment, Gearbox, Turtle Rock Studios Sierra Entertainment, Valve (digital)
2008 Counter-Strike Online Valve, Nexon Nexon
2014 Counter-Strike Nexon: Studio Valve, Nexon Nexon

References

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  1. ^ Bokitch, Chris (August 1, 2002). "Half-Life's Code Basis". Valve Editing Resource Collective. Valve. Archived from the original on March 1, 2007. Retrieved February 12, 2011.
  2. ^ "Half Life: Interview With Gabe Newell". GameSpot UK. 1999. Archived from the original on July 23, 2001. Retrieved March 22, 2011.
  3. ^ "Valve Press Release". Valve. Retrieved May 12, 2010.
  4. ^ "Modeling and Animating for Half-Life (Interactive Graphics Lecture 22 notes, Professor Denis Zorn)" (PDF). NYU Math Dept. Retrieved January 13, 2019.
  5. ^ Johnson, Erik (September 1, 2005). "Talk:Erik Johnson". Valve Developer Community. Archived from the original on March 20, 2007. Retrieved February 12, 2011.
  6. ^ "Counter-Strike 1.6 Beta released". Valve. January 28, 2013. Retrieved February 22, 2014.
  7. ^ McWhertor, Michael (January 25, 2013). "Valve releases original Half-Life for Mac and Linux". Polygon. Archived from the original on December 17, 2013. Retrieved January 25, 2013.
  8. ^ "Awards and Honors". Valve. Archived from the original on January 8, 2014. Retrieved February 23, 2014.
  9. ^ "Half-Life Expands". IGN. April 15, 1999. Archived from the original on November 9, 2012. Retrieved February 23, 2014.
  10. ^ Trueman, Doug (August 30, 2000). "DC Half-Life Includes Blue Shift". GameSpot. Archived from the original on November 7, 2012. Retrieved February 23, 2014.
  11. ^ C. Perry, Douglass; Zdyrko, Dave; Smith, David (September 19, 2001). "Half-Life Preview". IGN. Archived from the original on November 8, 2012. Retrieved February 23, 2014.
  12. ^ "Half-Life: Decay - Valve Developer Community". Valve Software. Valve. September 6, 2011. Retrieved July 19, 2016.
  13. ^ Dzhura, Vyacheslav; Zhatov, Denis. "PC:Decay". Half-Life Creations. Dimension Force. Retrieved July 14, 2016.
  14. ^ Hoaxer. "ModDB Half-Life Decay". ModDB. Retrieved July 14, 2016.
  15. ^ Butts, Steve (May 8, 2003). "Half-Life 2 Preview". IGN. Archived from the original on November 11, 2013. Retrieved February 23, 2014.
  16. ^ Machkovech, Sam (January 22, 2020). "Valve opens up about Half-Life: Alyx, Source 2 engine on Reddit". Ars Technica. Retrieved October 23, 2020.
  17. ^ Craddock, David (March 16, 2018). "Threading the Needle: The Making of Quake Team Fortress". Shacknews. Retrieved February 18, 2021.
  18. ^ Wolfe, Clayton (November 22, 2000). "Counter-Strike". IGN. Archived from the original on October 25, 2012. Retrieved February 24, 2014.
  19. ^ "Valve signs with Activision, exclusive Day of Defeat screens". GameSpot. April 4, 2003. Archived from the original on February 25, 2014. Retrieved February 25, 2014. The first Valve game to be released through Activision will be Day of Defeat, a Half-Life-powered first-person shooter set in World War II.
  20. ^ "ナムコ、「カウンターストライク ネオ」のβテストを実施" (in Japanese). GAME Watch. Retrieved February 18, 2021.
  21. ^ Greg, Kasavin (March 25, 2002). "Counter-Strike: Condition Zero Preview". GameSpot. Archived from the original on February 25, 2014. Retrieved February 24, 2014.
  22. ^ "ナムコ、「Counter-Strike NEO Ver.2」を今夏に全国展開新コンソールデザインを発表 βテストは今春を予定" (in Japanese). GAME Watch. Retrieved February 18, 2021.
  23. ^ Varanini, Giancarlo (September 1, 2000). "Sierra Unveils Gunman Chronicles". GameSpot. Archived from the original on February 26, 2014. Retrieved February 25, 2014.
  24. ^ Blevins, Tal (December 4, 2000). "Gunman Chronicles". GameSpot. Archived from the original on February 26, 2014. Retrieved February 26, 2014.
  25. ^ Amer, Ajami (July 18, 2002). "James Bond 007: NightFire Preview". GameSpot. Archived from the original on February 25, 2014. Retrieved February 24, 2014.
  26. ^ Hoff, John (September 8, 2015). "Xash3D allows you to play Half-Life on Android". Android Community. Retrieved July 16, 2024.
  27. ^ BTRE (August 3, 2020). "Half-Life: Absolute Zero mimics Half-Life's original vibe, run on Linux with Xash3D FWGS". GamingOnLinux. Retrieved July 15, 2024.
  28. ^ Beschizza, Rob (March 9, 2022). "Play the original Half-Life in the browser". Boing Boing. Retrieved July 16, 2024.
  29. ^ O'Connor, Alice (March 2, 2023). "Half-Life's raytracing mod is great because it makes the game look old in a new way". Rock Paper Shotgun. Retrieved July 16, 2024.
  30. ^ Larabel, Michael (November 10, 2017). "FreeCS: Aiming For An Open-Source Counter-Strike Implementation". Phoronix. Retrieved July 14, 2024.
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