Quake II engine
Video game engine From Wikipedia, the free encyclopedia
The Quake II engine (id Tech 2.5[citation needed]), is a game engine developed by id Software for use in their 1997 first-person shooter Quake II.[1] It is the successor to the Quake engine. Since its release, the Quake II engine has been licensed for use in several other games.[2]
A screenshot of Quake II | |
| Developer(s) | id Software (John Carmack, John Cash, and Brian Hook) |
|---|---|
| Final release | 3.21
/ December 22, 2001 |
| Repository | github.com/id-Software/Quake-2 |
| Written in | C, Assembly (for software rendering & optimization) |
| Platform | Windows, Mac OS 8, Linux, PowerPC Macintosh, Amiga, Nintendo 64, Dreamcast, Xbox, PlayStation 2 |
| Predecessor | Quake engine |
| Successor | id Tech 3, GoldSrc |
| License | GNU GPL-2.0-or-later |
| Website | www |
One of the engine's most notable features was out-of-the-box support for hardware-accelerated graphics, specifically OpenGL, along with the traditional software renderer.[2] Another interesting feature was the subdivision of some of the components into dynamic-link libraries. This allowed both software and OpenGL renderers, which were selected by loading and unloading separate libraries. Libraries were also used for the game logic, with consequences including:
- Since they were compiled for specific platforms, instead of an interpreter, they could run faster than Quake's solution, which was to run the game logic (QuakeC) in a limited interpreter.[3]
- id could release the source code to allow modifications while keeping the remainder of the engine proprietary.[4]
The level format, as with previous id Software engines, used binary space partitioning. The level environments were lit using lightmaps, a method in which light data for each surface is precalculated (this time, via a radiosity method) and stored as an image, which is then used to determine the lighting intensity each 3D model should receive, but not its direction.[5][6]
id Software released the source code on December 22, 2001, under the terms of the GNU General Public License v2.0 or later.[7][8]
Games using the Quake II engine
Games using a proprietary license
| Year | Title | Developer |
|---|---|---|
| 1997 | Quake II | id Software |
| 1998 | Quake II Mission Pack: The Reckoning | Xatrix Entertainment |
| Quake II Mission Pack: Ground Zero | Rogue Entertainment | |
| Zaero (unofficial expansion for Quake II)[9] | Team Evolve | |
| Juggernaut: The New Story (unofficial expansion for Quake II)[9] | HeadGames Publishing | |
| Heretic II | Raven Software | |
| SiN | Ritual Entertainment | |
| 1999 | SiN: Wages of Sin | 2015, Inc. |
| Kingpin: Life of Crime | Xatrix Entertainment | |
| 2000 | Soldier of Fortune | Raven Software |
| Daikatana | Ion Storm | |
| 2001 | Anachronox |
Games based on the GPL source release
| Year | Title | Developer |
|---|---|---|
| 2000 | D-Day: Normandy[10][11] | D-Day: Normandy Team |
| 2003 | UFO: Alien Invasion | UFO: Alien Invasion Team |
| 2008 | Gravity Bone | Blendo Games |
| 2012 | Warsow[12][13] | Warsow Team |
| Thirty Flights of Loving | Blendo Games | |
| 2017 | Alien Arena: Warriors of Mars | COR Entertainment, LLC |
| Quetoo[14] | Quetoo Team | |
| 2019 | Warfork[15] | Warfork Team |
Ports
- Jake2 – a Java port of the Quake II engine's GPL release. It has since been used by Sun as an example of Java Web Start capabilities for games distribution over the Internet.[16] In 2006, it was used to experiment playing 3D games with eye tracking.[17] The performance of Jake2 is on par with the original C version.[18]
- Quake2Forge – one of the earliest community produced source ports. [19]
- Quake2xp – a port of Quake II to modern operating systems.[20][21][22]
- KMQuake2 – an upgraded engine for Quake II.[22][23][24]
- Quake2maX – OpenGL focused source port.
- Quake 2 Evolved – early graphically enhanced game engine.[25][26][27][28]
- Quetoo (formerly Quake2World) – multiplayer focused port derived from Quake2Forge.[14][29]
- Berserker@Quake2 – graphically enhanced Quake II port.[30]
- Yamagi Quake II – a port of Quake II to modern systems which aims to preserve the original gameplay.[31][32][33][34][22]
- vkQuake2 – the original Quake II engine with additional Vulkan renderer created by Krzysztof Kondrak, a programmer from Poland. It was originally released in December 2018 under the GPLv2.[35][36]
- CRX Engine – custom version for CodeRED: Alien Arena.[37][38][39][40]
- Qfusion – a modification of the GPL version of the engine. The engine was used in the 2012 game Warsow.[41][12][13]
- Q2Pro – a mutliplayer oriented port, which was also used as the basis for Quake II RTX.[42][43]
- R1Q2 – another multiplayer focused port.[22]
- DirectQII – DirectX oriented source port.
- Fruitz of Dojo – a source port aimed at Mac OS X.[44][45][46]
- Q2DOS – a backport of the game to MS-DOS.[47][48][49]
See also
References
External links
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