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IDProjectCategoryView StatusLast Update
0000309Gameplay + OpenGL[All Projects] Bugpublic2017-02-24 12:00
Assigned To 
Status resolvedResolutionfixed 
Platformx86_64OSWindowsOS Version7
Summary0000309: Portal-aware sight check fails if there are blocking lines in the area behind the portal
DescriptionSee the example wad. The imp in the right room will wake up instantly, while the imp in the left room will only wake up after you shoot a gun.
TagsNo tags attached.





2017-02-19 19:20


portals2.wad (12,081 bytes)


2017-02-19 19:28

reporter   ~0000677

Last edited: 2017-02-19 19:31

View 2 revisions

I think this also prevents using CheckSight with portals to hide/remove particles based on visibility to the player, because portals in most cases will have blocking lines around them.
At least I most definitely remember CheckSight not working properly in such cases which led me to the assumption that CheckSight is not portal-aware at all (but apparently it's a bug).

Also, making the blocking line (highlighted one here: doublesided and passable solves the problem and the imp from the left room can see the player too.

Issue History

Date Modified Username Field Change
2017-02-19 19:20 ZZYZX New Issue
2017-02-19 19:20 ZZYZX File Added: portals2.wad
2017-02-19 19:28 ZZYZX Note Added: 0000677
2017-02-19 19:31 ZZYZX Note Edited: 0000677 View Revisions
2017-02-24 12:00 Graf Zahl Status new => resolved
2017-02-24 12:00 Graf Zahl Resolution open => fixed