|Doom alpha 0.4, what was to become E1M6.|
|The same level in Doom alpha 0.5. Note the parts that have changed.|
|Browsing textures in Doom alpha 0.4 ...|
|... in Doom alpha 0.5 ...|
|... and in Doom beta.|
TEXnnnnn names in the browser for version
0.4 are not real. Since that version of Doom did not have
texture names (textures were referred to by their numbers),
Yadex generates automatic
TEXnnnnn names, to make
the whole thing look like a regular Doom level. The garbage on
the right of the
SKY2 texture is, as far as I can
tell, a problem in the Doom beta iwad, not in Yadex.
|In the top window, E1M5 from Doom alpha 0.5.
In the bottom window, E3M3 from regular Doom.
Besides revealing that I use FVWM95, this screenshot shows how certain sprites, (such as the medikit you can see above), have changed between the alphas and the final release. Also note the weird things flags in the alphas. The flag 0080h represented by "F" is not a standard Doom flag. It must have meant something to the alpha versions but I don't know what.
|Doom alpha 0.4, |
|Doom alpha 0.5, |
|Doom 1.9, |
On the screenshot from version 0.4 above, a few things are
shown in cyan. That is Yadex's way of saying that they have an
unknown type. Indeed, versions 0.4 and 0.5 seem to use things
types 2020, 2021, 2027, 2029, 2030, 2032, 2036, 2037, 2038 and
perhaps others I've missed, that are not defined in later
versions of Doom. It would not be very difficult to find out
what those things are and add their definitions to
alpha05.ygd. It has
already been done for thing type 2027, that is a bronze-coloured
The corresponding entry in
alpha04.ygd is :
thing 2027 d - 10 "Bronze barrel [Alpha]" GBAR
The beta version is very similar to the released version,
much more than the alpha versions. The only beta-specific things
I know of are the evil sceptre (
BON3A0) and the
unholy bible (
BON4A0). They exist in the alphas as
well, though the sprites look different. The sprites shown below
are, from left to right,
BON3A0 from the alphas,
BON3A0 from the beta,
BON4A0 from the
BON4A0 from the beta.
They have been added to the relevant game definition files :
thing 2016 b - 16 "Evil sceptre [Beta]" BON3 thing 2017 b - 16 "Unholy bible [Beta]" BON4
Thanks to Lee Killough, Frans P. de Vries, id Software and others for giving us access to the alpha and beta versions of Doom. Thanks to Jonathan Wilson for figuring out the graphic formats.
This document is copyright © André Majorel 1999. Verbatim copies are permitted but don't mess with it without getting my permission first. A lot of the material in this document is the property of id Software. All trademarks are the property of their owners.