## Portal example gallery

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### Re: Portal example gallery

A section is a group of connected sectors. As a very sinple example of what 'section' means take MAP30 of Doom2.wad. It contains of two sections: the starting area and the main area with the boss shooter.

Graf Zahl

Joined: 19 Jul 2003
Location: Germany

### Re: Portal example gallery

But what are the offsets? It looks like the coordinates for vertices but you only offer one set per portal (which I assume to be a linedef)?

Trusty McLegit

Joined: 07 Feb 2016

### Re: Portal example gallery

The coordinate difference between the connecting portal lines.

Graf Zahl

Joined: 19 Jul 2003
Location: Germany

### Re: Portal example gallery

Graf Zahl wrote:Say, you have 4 portals (sector or static line portals) in your map, containing 4 sections:

Portal 1 from section 1 to section 2 has an offset of 500, 600
Portal 2 from section 2 to section 3 has an offset of 500, 400
Portal 3 from section 1 to section 4 has an offset of -500, -500
So if you connect section 4 with section 3 you'll need an offset of 1500, 1500, so that across both paths the offset from section 1 to section 3 is 1000, 1000.
This is a vital property of static portals, without it they cannot work properly.

Could you word that in a way that isn't math homework?

Jaxxoon R

Joined: 04 May 2014

### Re: Portal example gallery

Let's suppose two L shaped rooms, with two portals connecting them. Let's make it really simple by having the portals moving only in a single axis, so I can talk in "distance" instead of the more generally proper "vector".

On the top example, with the mirrored Ls, the red portals cannot be static because as you notice, the distance between two points in different rooms depends on which portal you take.

On the bottom example, with the translated Ls, the green portals can be static because the distance covered by both portals are the same.

Now you can add in a third room if you want, it'll make the examples more complicated but the rule is the same. The distance between the rooms must be consistent regardless of which portal is used.

As a result, if you have only one portal between two areas, then there's no consistency headache.
Gez

Joined: 06 Jul 2007

### Re: Portal example gallery

So basically, as long as the amount of "grids" (like the 64x64 grid in GZDoom Builder) remains consistent, static portals with sound are good?

Nash

Joined: 27 Oct 2003
Location: Kuala Lumpur, Malaysia
Twitch ID: nashmuhandes
Github ID: nashmuhandes

### Re: Portal example gallery

I can't really tell what's happening in that diagram... Is it meant to me like this:
Spoiler:
or like this:
Spoiler:

Also, according to what I think I've learned from this thread, this test wad should work. What did I do wrong?
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Trusty McLegit

Joined: 07 Feb 2016

### Re: Portal example gallery

PS: all the test maps show this on GZdoom console:

Warning: z-offsetting not allowed for interactive portals. Changing line 65 to teleport-portal!

I suppose this function is highly experimental...

merlin86
Somewhere between supercazzola and quintana

Joined: 29 Jan 2008
Discord: LuciferSam#7338
Twitch ID: LuciferSam86
Github ID: LuciferSam86
Operating System: Windows 10/8.1/8/201x 64-bit
OS Test Version: Yes (Using Development/Testing Version)
Graphics Processor: nVidia with Vulkan support

### Re: Portal example gallery

What's experimental about it? It tells you in clear words that the portal type you are trying to use does not work for the portal you define. Interactive portals allow spawn offsetting but due to how that works it cannot be done when z is different on both sides of the portal.

Graf Zahl

Joined: 19 Jul 2003
Location: Germany

### Re: Portal example gallery

Then why doesn't this work even if both sectors are exactly identical?

Jaxxoon R

Joined: 04 May 2014

### Re: Portal example gallery

Hard to tell without the map...

Graf Zahl

Joined: 19 Jul 2003
Location: Germany

### Re: Portal example gallery

If you insist.
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Jaxxoon R

Joined: 04 May 2014

### Re: Portal example gallery

Looks like some checking code got lost. Fixed.

Graf Zahl

Joined: 19 Jul 2003
Location: Germany

### Re: Portal example gallery

So, I *think* I get what I'm supposed to do for a static portal, and there's no errors in the console, but sound still isn't working. What am I doing wrong?
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Trusty McLegit

Joined: 07 Feb 2016

### Re: Portal example gallery

Looks ok. But there may still be bugs in the sound code. It hasn't been thoroughly tested yet.

Graf Zahl