[r3517] Broken "Thing thrust Z" function?

[Caleb13]

I didn't find it in recent bug reports, so... in this thread http://forum.zdoom.org/viewtopic.php?f=19&t=32469, one author released a mod that employs "thing thrust Z" to make ladders (linedefs number 2447, 2448 and 2455). The problem is already explained in the thread: When I tried the map with the latest compiled Zdoom SVN (r3517) I couldn't climb any of the ladders. But they worked just fine in Zdoom 2.5.0 (r2508) and old Gzdoom (r1261).

[Enjay]

Heh, I guess that would explain why I was stuck in the map. I hadn't read the comments in the thread so I just assumed that the ladders were only decorative and I hadn't found the actual way out.

[edit] and, yes, trying the map with the official exes the ladders do indeed work. [/edit]

[Graf Zahl]

No, they don't work anymore - and that's quite intentional.

http://forum.zdoom.org/viewtopic.php?f=7&t=23184

So, unless someone can point to a map that saw an official release and depends on this bug this won't be reverted. The negative effects of this are far worse than this one broken map.

Technically it's a map bug. You just cannot 'push' a passable two sided linedef.

(I guess that's an inevitable fate of Doom developers. Fix a bug and be sure to find at least one map that depends on it... )

[Enjay]

I can't check ATM but would making the lines behind the ladders (rather than the ladder lines themselves) fix the map? Although they are 2S passable lines, you can push against the lower side until you are high enough to step through.

[Caleb13]

Well, you can try to suggest that to the map's author. But considering that it was just "quickmap made out of boredom", I don't think he will be inclined to make such changes...

[Graf Zahl]

I can't check ATM but would making the lines behind the ladders (rather than the ladder lines themselves) fix the map? Although they are 2S passable lines, you can push against the lower side until you are high enough to step through.

The change was to only trigger the 'push' event when the player actually pushes a wall so yes, that should work.