It seemed weird at first, but the polyobject sector (backsector) itself DOESN'T need checked (although I still am doing it for safety). Rather, the in-level sector just needs checked.
If someone manually modifies the polyobject sector though, then this bug can still occur... but this fixes it for the most common use-case where this can happen. I'll try to tackle the rarer cases in my next commit.
Actual blockmap fix
MI's "fix" was a reversion of something that allowed 2.0 maps to use the entire blockmap. This MR reverts that fix and adds a proper fix to the issue of west/south edges of the blockmap not working as they should. Tested with a thokbarrier-less square map (all sides were solid) and with AGZ (objects are tangible all around the map, like they are in 2.1.14).
See merge request !10
Polyobject more fixes
Extra fixes related to polyobjects; actually properly putting their flats alongside them in the draw list, and making them able to use single-waypoint zoom tube sequences. Also threw in a smoothness fix for swinging chains while I was there.
See merge request !8
Polyobject scroll hotfix
Things fixed:
* Polyobjects should now carry the same thing types as conveyors (notable example; they'll now carry Crawlas when they wouldn't before)
* The drifting issue with players on spinning polyobjects should be fixed. (I swapped in the old bad hack for a new hack that should work like it's supposed to)
See merge request !6
...
(It's that infamous intangible West/South linedefs bug, which was really a blockmap-related bug all along. AND IT WAS SO SIMPLE TO FIX!)
git-svn-id: https://code.orospakr.ca/svn/srb2/trunk@9048 6de4a73c-47e2-0310-b8c1-93d6ecd3f8cd
