Line_QuickPortal is a parameterized special designed for UDMF, for easily applying an anchored portal or linked portal on two lines, connecting the front sectors of these lines. It only has one parameter:
- If 0, the portal is linked. Distances relative to other linked portals should be consistent. Failing to do so will still work, but result in fragmented gameplay as monsters get confused.
- If 1, the portal connecting the two lines will not allow objects to pass through, i.e. will be merely visual. Unlike linked portals, such portals can be placed between lines of different angles and doesn't require distance consistency.
Use this special to connect two separate areas in the map. Select two linedefs, give them this special, with the non-interactive argument same on both linedefs. Give the two linedefs the same tag.
- Portal linedef types: for the classic Doom map format.