A Very Strange Engine Bug? (Demo Included!)

[Kristian Ronge]

Hello all,

As I was casually playing through Walkabout (a very nice, old map for Doom 2) I found(?) a bug which I cannot recall ever having seen, or heard about. I got >100% secrets at the tally screen! (116%, in fact, that is 7/6 secrets!)

I found it was repeatable, and made a demo in -nomonsters. PrBoom with doom2.exe compatibility (it shows up as 116% secrets in doom2.exe as well!) More details in the text file. Can anybody explain what's going on? Has this been discussed previously?

EDIT: Anders Johnsen's max demo of this map, at the SDA, has only 83% secrets, but triggers the same bug (so even if Anders gets the equivalent of 5/6 secrets found, he doesn't visit 2 secrets in his demo)

[Vile]

I've never actually seen an instance of this before, but it does sound familiar. I've no clue what causes it, either... hmm.

[Donce]

Kristian, you are right. Linedef's special "+texture" means that the sector changes not only texture, but other attributes of the surrounding sector as well. Here's a very very small test wad I made in 2 minutes, you get 200% secrets in it.

[myk]

Vile said:
I've never actually seen an instance of this before, but it does sound familiar.

I seem to recall some discussion going on on IRC, but didn't that involve Boom stuff?

Now all we need is a few Arch-viles and we can start recording double-max category runs!

[Opulent]

yeah, the donut sector (if secret) will add another secret on top of 100%.
The Boom issue came up a few years ago because someone's map kept cycling a sector to secret and not secret over and over... making any % total possible.

[Kristian Ronge]

Thanks for the explanations, everyone! Now I can sleep again. :-)