Get sky walls to properly block rendering? (help wanted)

[JacketEternal]

Hey, I've been messing around with sky walls and floors and I've run into an issue. (Well... not really an issue, just an unfortunate side effect of the way sky walls work.)



As you can see, despite being behind a sky wall the player can see straight through it and find the awesomely hidden rocket launcher and single best placed arch-vile in doom history.

Heck, if you look at it from certain angles you can get only the rocket launcher or only get the arch-vile to show. (Or neither, but I didn't get a screenshot of that cause then you'd have to stare at my horrible custom sky texture)



As fun as this is to play around with (and boy have I played around with it), is there any way to get sky walls to hide stuff properly? Just like a normal wall, but instead of a texture it displays the sky effect?

I understand WHY this behavior appears (the wall technically has NO texture after all). But I want to know if I have to work around it or if there's a perfect solution.

the screenshots were taken in gzdoom btw, so if this is a source-port specific issue feel free to mercilessly ridicule me.

[HorseJockey]

Instead of setting your sidedef to have no texture, apply a texture to it and set it's special as 9 "Line Horizon". Then you won't "see" through it.

Dig the sky texture btw.

Edited October 15, 2022 by HorseJockey

[JacketEternal]

47 minutes ago, HorseJockey said:

Instead of setting your sidedef to have no texture, apply a texture to it and set it's special as 9 "Line Horizon". Then you won't "see" through it.

Dig the sky texture btw. 

That option isn't showing up in ultimate doom builder... though that may be because I'm trying to do this boom-compatible. (I'm a little new to mapping but I think I'm looking in the right place.)

[ViolentBeetle]

It seems a little inconsistent between ports how sky is drawn, but either having one-sided line or actually textured ceiling behind it lowered into the floor should help.

Sky is effectively still a ceiling with sky hack merging ceilings of different height together to allow buildings of different height. But it won't draw anything behind the roof or one-sided line.

[JacketEternal]

For anyone wondering, I got it to work by making the wall a sector, and then hoisting it up to the ceiling (the other way around didnt work as well).

Basically what Violent Beetle said.

[HorseJockey]

On 10/15/2022 at 4:06 AM, JacketEternal said:

That option isn't showing up in ultimate doom builder... though that may be because I'm trying to do this boom-compatible. (I'm a little new to mapping but I think I'm looking in the right place.)

Glad you got it working, I wasn't even thinking about compatibility, my bad. I usually map exclusively in UDMF. Good luck with your map.