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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Linux and DOOM (1993) (lemmy.world)

submitted 5 months ago by [email protected] to c/[email protected]

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So I've been thinking, the DOOM game code was made available openly and if I am not mistaken, was based off the linux version.

Is it right to say that's why DOOM got incredibly popular with the "It can run on anything i.e a cash machine"

I say this because we all know Linux is a rock solid and efficient system compared to the bloat of Windows.

If anyone can enlighten me, This is pretty much why you can find DooM on almost any platform BECAUSE of its Linux code port roots?

Consider me a nutcase but I genuinely thought this was the case.

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[–] [email protected] 28 points 5 months ago* (last edited 5 months ago)

The reason that Doom is so portable goes beyond Linux and is an artefact of its development. id developed Doom on NeXTSTEP (i.e. Unix) machines and obviously targeted DOS. This is pretty unique among DOS games at the time and required id to write as much code as possible in a platform agnostic way. This means that the main engine does not care about where it is running and the usual DOS hacks are contained to DOS-specific files. In order to port Doom to a new platform, ideally one only needs to rewrite the system-specific implementation files for video, sound, filesystem access, etc., and this mostly holds true today. (These files are prefixed with i_ in the Doom source).

The Linux port is just one of many versions developed at the time. I don't believe that it was commercially released; it was more of a portability test. The reason that the Linux version was chosen for the source release over the DOS version was because it didn't rely on the proprietary DMX sound library that the DOS port used.