Noclip does Segment Violation

Coolster

It's weird but whenever i do Noclip (testing purposes) Doomsday Engine crashes (tried with the latest 378 Build) with the Segment Violation error. Im uploading the Doomsday.out here:

http://www.sendspace.com/file/dzpqsd

DaniJ

Can you provide any more information? Where in the map were you when the crash occured, what were you doing, had the Icon of Sin been triggered yet, etc...?

Coolster

It doesn't seem to be triggered with anything, i had this crash on Map20 of regular Doom2 just running for a while with noclip turned on and the same thing happened on Scythe2 map30 (icon of sin not triggered there though). Sometimes it crashes fast, sometimes not, maybe it isn't even related to noclip, i will try these two maps without it.

Edit: Tested them, they won't crash without noclip

DaniJ

I've got a feeling that you are encountering this issue in maps which result in degenerate subsectors. The red bar area in DOOM2, MAP02 for example has this problem where if you noclip outside the map to the right of the switch you'll get a similar crash.

This issue has actually already been solved in the old mapcache branch of Doomsday. That crash occurs when an attempt is made to link a mobj into an "orphan" subsector. However, these orphans are the result of a logic issue in the gl BSP construction algorithm (which I subsequently found and fixed).

Once 1.9.7 goes stable I intend to return to the mapcache branch(es) and extract the good bits.