SKYBOX
A tutorial for G/ZDoom
| Prerequisit programs | |
|---|---|
| Map Editor | e.g.: GZDoom Builder - Bugfix or newer |
| Lump Editor | e.g.: Slade3 |
| Image Viewer/Editor | e.g.: Irfanview, XnView, Paint Shop Pro, Paint.net |
One of the best collection of skyboxes, originally they were intended for the game Quake, is Kothic Skies. There, one can find some weird and wonderful skyboxes in 256 and 512 bit sizes. Best of course are the 512 bit images in tga format. So, let's make a 6 texture skybox, for example: jump2_512, a spacestation.
For use with GZDoom change the image format from tga into png.
This can be done with Irfanview, or XnView, or similar. If the images have a name,
which is longer than 8 characters, then they must be renamed before they are brought
into the map with Slade3, or else the name will be truncated to the first 8 characters.
Making a skybox is a two part procedure.
First, construct a map with your favourite map editor. The skybox will be visible in any sector
with the F_SKY1 sky place holder on the floor and/or ceiling:
Save the map.
Then open your map with Slade3 to create the MAPINFO, GLDEFS and image lumps. I named the skybox JUMP2 to stay with the original name and then renamed the image lumps according to the following scheme.
| renaming convention |
|---|
| name_bk to name_W |
| name_dn to name_B |
| name_ft to name_E |
| name_lf to name_S |
| name_rt to name_N |
| name_up to name_T |
And now to see what it looks like in-game:
Oh dear, something went wrong!!!!!
Well, not really. Remember that the skyboxes from Kothic Skies were made for the Quake engine. The drawback is, that the top image has to be rotated to match up in GZDoom.
Some time back, Graf Zahl made a fix for this. Include fliptop in GLDEFS, for example:
Let's see how it looks like now:
Aha, all is well.
Example pwad