2 kinds of vanilla 3D bridges example wad

[Sneezy McGlassFace]

Alright, here's the deal - I have only a rudimentary understanding how it works but managed to make an example piece, so here it is for book-keeping purposes. The best way to understand something is trying to explain it, right? So here I go.

 

The idea is this:

There is an invisible sector that raises when approached from one side and lowers when approached from another side. For that you have a self-referencing sector - that means the linedefs are told to have their front and back sides to one and the same sector. In my first example that's 17, and in the second it's 21. That's the reference sector number. Sector number and sector tag are different things. You set sector tag, sector number is automatically assigned. Then there's a control sector outside the map, that sets the floor and ceiling height. This control sector has height -128 units - what the hell, right? Well, that's for the mindfuckery regarding instant rising and lowering of the invisible platform for player to walk on. If you set ceiling to 0 and floor to 128, and have a floor lower / raise linedef, the action will be performed immediately in the opposite direction. Yeah, super confusing, I know.

 

Fun fact: the beams on the second bridge are purely decorative and serve no purpose.

 

Plenty people know how to make this magic happen way better than I but there's not much explanation I could understand. Doomworld has an article on 3D bridges I didn't understand, and there's How to make 3D bridge in vanilla Doom I kinda understood but dude talks really fast and does several things at a time. Also, I'm not using UDB but Eureka, which complicates things makes it more fun to figure out.

I put some objects on the bridge to visualise  how it moves up and down.

Correct me if I did anything wrong.

 

MAP01 is invisible bridge like in Plutonia

 

MAP02 is with cross beams like bunch other wads

 

This is how Eureka sets the linedef reference, if the back and front both reference sector 17, it's referencing itself - it is self-referencing.

 

Hope that was of any use at all..

Download: https://drive.google.com/file/d/1UznX6VBYeZrBz-l1xjSJ_RfDKKZsxy9Y/view?usp=sharing

Edited April 18, 2022 by HrnekBezucha

[Sectorslayer]

Here is a video of my building a basic vanilla bridge in SLADE3: Sector Slayer Doom Dojo - Invisible Bridge

 

I’m not speaking very fast. But I don’t know if it makes up for my strong accent. 😏

 

 

[rita remton]

hi! this is my own tutorial on the topic of making a simple 3d bridge using self-referencing sectors in classic doom vanilla format. hope this helps :)

 

screenshot:

 

tutorial: