Corbin: trimmed as that info is not needed here

2014-10-08T23:10:54Z

trimmed as that info is not needed here

Corbin: Created page with "{{DoomWiki}}The '''Doom source code''' was released December 23, 1997, initially under a not-for-profit license. Later, permission was granted to re-release the source code un..."

2014-10-08T23:10:17Z

Created page with "{{DoomWiki}}The '''Doom source code''' was released December 23, 1997, initially under a not-for-profit license. Later, permission was granted to re-release the source code un..."

New page

{{DoomWiki}}The '''Doom source code''' was released December 23, 1997, initially under a not-for-profit license. Later, permission was granted to re-release the source code under the GNU [[Wikipedia:GPL|GPL]] in October 3, 1999.

Before release, the source code was tidied up by [[Bernd Kreimeier]]; the source release includes a changelog of his contributions. Several documentation files are also included. The original plan for the source code release involved a book Kreimeier was to write on the Doom engine; however, due to Doom's decreasing relevance in the gaming community, it was eventually judged not to be a marketable idea, and the project was abandoned. The source code was then released to the public.

Because of legal issues regarding the [[DMX]] [[sound]] library developed by [[Paul Radek]] which was used for Doom, the release was of the source code to the [[Wikipedia:Linux|Linux]] port of Doom. Despite this, within several months, several ports had been made back to DOS. As a result, many [[source ports]] exist.

== Source code structure ==

The source code can be divided into sections. Files and functions within the source code have one- or two-letter prefixes to denote their subsystem.

; AM_*
: [[Automap]] code
; D_*
: Initialisation/general code
; F_*
: "Finale" (end of game) and "[[screen melt]]" code.
; G_*
: Main game loop/control
; HU_*
: [[Heads-up display]]
; I_*
: System-specific code
; M_*
: Miscellaneous (includes the menu)
; P_*
: Game logic/behaviour
; R_*
: [[Doom rendering engine|Rendering engine]]
; S_*
: [[Sound]] code
; ST_*
: [[Status bar]]
; V_*
: General graphic rendering
; WI_*
: End-of level "intermission" screen
; W_*
: [[WAD]] file loading
; Z_*
: [[Zone memory|Zone memory allocation system]]

The following are common prefixes for functions, although they do not denote a particular subsystem, and there are no files with these prefixes:

; A_*
: Action functions invoked in sprite movement frames (these are the functions used in [[Dehacked]] "code pointers")
; PIT_*
: Callback functions passed to P_BlockThingsIterator (see p_maputl.c)
; T_*
: "[[Thinker]]" functions set to be called each clock [[tic]] for some purpose (eg, moving platforms or flickering lights)

A detailed list of files and their purposes can be found in [[Doom source code files]].

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	The source code can be divided into sections. Files and functions within the source code have one- or two-letter prefixes to denote their subsystem.		The source code can be divided into sections. Files and functions within the source code have one- or two-letter prefixes to denote their subsystem.
−
−	; AM_*
−	~~: [[Automap]] code~~
−	; D_*
−	~~: Initialisation/general code~~
−	; F_*
−	~~: "Finale" (end of game) and "[[screen melt]]" code.~~
−	; G_*
−	~~: Main game loop/control~~
−	; HU_*
−	~~: [[Heads-up display]]~~
−	; I_*
−	~~: System-specific code~~
−	; M_*
−	~~: Miscellaneous (includes the menu)~~
−	; P_*
−	~~: Game logic/behaviour~~
−	; R_*
−	~~: [[Doom rendering engine\|Rendering engine]]~~
−	; S_*
−	~~: [[Sound]] code~~
−	; ST_*
−	~~: [[Status bar]]~~
−	; V_*
−	~~: General graphic rendering~~
−	; WI_*
−	~~: End-of level "intermission" screen~~
−	; W_*
−	~~: [[WAD]] file loading~~
−	; Z_*
−	~~: [[Zone memory\|Zone memory allocation system]]~~
−
−	~~The following are common prefixes for functions, although they do not denote a particular subsystem, and there are no files with these prefixes:~~
−
−	; A_*
−	~~: Action functions invoked in sprite movement frames (these are the functions used in [[Dehacked]] "code pointers")~~
−	; PIT_*
−	~~: Callback functions passed to P_BlockThingsIterator (see p_maputl.c)~~
−	; T_*
−	~~: "[[Thinker]]" functions set to be called each clock [[tic]] for some purpose (eg, moving platforms or flickering lights)~~

	A detailed list of files and their purposes can be found in [[Doom source code files]].		A detailed list of files and their purposes can be found in [[Doom source code files]].

Doom source code - Revision history

Corbin: trimmed as that info is not needed here

Corbin: Created page with "{{DoomWiki}}The '''Doom source code''' was released December 23, 1997, initially under a not-for-profit license. Later, permission was granted to re-release the source code un..."