CRX (game engine)

CRX
Developer(s)	COR Entertainment
Platform	Windows, Linux, FreeBSD, Mac OS

The CRX game engine is an opensourced, cross platform program that was derived from id Software's GPL code releases by COR Entertainment. The engine is primarily used for the game CodeRED: Alien Arena. The engine makes use of Quake II data formats such as .md2 and the BSP map format as well as others such as the skeletal Inter-Quake Model(IQM), and Ogg Vorbis audio. The engine runs on Windows, Linux, and FreeBSD. The engine has also been ported to Mac OS by third parties.

Technical specifications

CRX makes use of GLSL for per-pixel lighting, parallax mapping, normal mapping, and specular highlights for the majority of its rendered surfaces as well as post processing effects. The engine supports the use of 32-bit TARGA with alpha blending, as well as JPEG image formats. Stencil buffer shadows are used as simple planar shadows, as well as blurred stencil volumes. Dynamic shadows for all geometry are created by shadow mapping. Fog, weather effects, textured particles, lens flares, and light volumes are among some of the other renderer features. The audio is handled by OpenAL by Creative Labs, and supports effects such as Doppler. The built-in ragdoll physics is handled by ODE.

The netcode is based on the original Quake 2 source, with some changes such as antilag (backwards reconciliation), packet prioritorization and HTTP downloading of media content. A built-in server browser assists users in finding online games.

Critical acclaim

While CRX isn't as widely used as some other Quake-based gaming engines, it has received its share of press, mostly through tech reviews of CodeRED: Alien Arena and gaming engine tech articles.^[1]

References

↑ A Battle For Good Open-Source Game Graphics? at Phoronix.com

Game engines (list)

Free software /
open source

2D	Adventure Game Studio Beats of Rage Box2D Chipmunk Cocos2d Digital Novel Markup Language Flixel Game-Maker Gosu Jogre KiriKiri libGDX Moai OpenFL OpenRA ORX Pygame Ren'Py StepMania Stratagus Thousand Parsec VASSAL Xconq

2.5D	Aleph One Build Cube Doom Flexible Isometric Free Wolfenstein 3D

3D	Away3D Axiom Blender Game Cafu Crystal Space Cube 2 Delta3D Dim3 Genesis3D GLScene Horde3D HPL 1 Irrlicht id Tech 3 id Tech 4 JMonkey Luxinia OGRE Ogre4j Open Wonderland Panda3D Papervision3D Platinum Arts Sandbox Free 3D Game Maker PlayCanvas PLIB Python-Ogre Quake Quake II RealmForge Retribution Torque 3D

Mix	Allegro Construct Classic Godot Lightweight Java Game Library Spring Visualization Library

Proprietary

2D	Coldstone Construct 2 Corona CRX Fighter Maker Filmation GameMaker GameMaker: Studio Garry Kitchen's GameMaker Generic Tile Gold Box MADE Mscape M.U.G.E.N NScripter RPG Maker Sim RPG Maker Sound Novel Tsukūru Southpaw Stencyl Vicious Virtual Theatre V-Play Z-machine Zillions of Games ZZT

2.5D	Genie INSANE Jedi Pie in the Sky Super Scaler UbiArt Framework

3D	4A Advance Guard Game Anvil Arsys Beelzebub Bork3D BRender C4 Chrome Clausewitz Engine Creation CryEngine Crystal Tools Dagor Diesel Digital Molecular Matter Disrupt Dunia EAGL EGO Elflight Enforce Enigma Essence Flare3D Fox Freescape Frostbite Geo-Mod GoldSrc HeroEngine HydroEngine HPL 2-3 id Tech 5 id Tech 6 Ignite Iron IW Jade Kinetica LS3D Leadwerks LithTech Luminous Studio LyN Marmalade Mizuchi MT Framework NanoFX GE Outerra Panta Rhei PhyreEngine Q Real Virtuality REDengine Refractor RenderWare Revolution3D Riot RAGE SAGE Serious Shark 3D ShiVa Silent Storm Sith Source Titan TOSHI Truevision3D Unigine Unity Unreal Vision Visual3D Voxel Space XnGine X-Ray YETI Zero

Mix	CPAGE Dark Gamebryo Hybrid Graphics Kaneva Game Platform Metismo

Proprietary
game middleware
(list)

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