How to make circular rooms in doom builder 2

[opij]

I want a circular room or a room that can make a good place for the skybox viewpoint so I can make a good looking sky

[Vagrant0]

If we're talking about oldschool doom, you can't actually make a room circular, but made up of angular lines depending on the size of the room and how close to circular you want. But, you pretty much have to lay out all the lines manually using a grid, so doing more than 16 or so sides requires some math and calculating coordinates for each vertex. The other part is that due to how the game renders wall textures (with them starting from the left on each wall), you have to manually set a horizontal offset to each piece without the benefit of being able to see them live to line them up. This means that the textures you can use easily are usually limited to just those that don't have much horizontal variation or look kinda random, or you have to sit there figuring out the length of each line segment and how many pixels long it would be so that the offset of the next wall will begin where the current ended.

 

Unfortunately stretching textures on walls, auto-aligning them, or getting a 3d preview as you work was not technically feasible in that era of 3d gaming.