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====extflags==== :''Default: No flags are set by default. '' This field specifies extended linedef flag values which impact the functionality of parameterized linedef specials. This field uses the same syntax as BEX/EDF flag strings, but the syntax will be reviewed here for completeness. A BEX flag list is a string of flag names separated by whitespace, pipe characters, commas, or plus characters. In ExtraData, if a flag list contains whitespace, commas, or plus signs, it must be enclosed in double or single quotations. Flags are combined using bitwise-OR logic, so a flag name can be specified more than once. Specifying a flag name causes that flag to be turned on. The default state of all flags is off. These are the flag values which are available for this field: Flag name Meaning --------------------------------------------------------------------------------------- CROSS Linedef can be activated by being crossed. USE Linedef can be activated by being used. IMPACT Linedef can be activated by being shot. PUSH Linedef can be activated by being pushed. PLAYER Linedef can be activated by players. MONSTER Linedef can be activated by objects with SPACMONSTER flag. MISSILE Linedef can be activated by objects with SPACMISSILE flag. POLYOBJECT Linedef can be activated by polyobjects (only works with CROSS) REPEAT Linedef action is repeatable. 1SONLY Linedef can only be activated from first side. ADDITIVE Linedef's midtexture is drawn with additive blending. BLOCKALL Linedef will block everything that can be clipped. ZONEBOUNDARY Linedef will work as a reverb effect boundary. Not needed for one-sided lines. CLIPMIDTEX Linedef middle texture will not "bleed" on floor and ceiling. LOWERPORTAL Linedef copies floor portal from its backside to its lower visible edge UPPERPORTAL Linedef copies ceiling portal from its backside to its upper visible edge --------------------------------------------------------------------------------------- Notes: IMPACT is currently only implemented for bullet weapons. LOWERPORTAL and UPPERPORTAL are used to enable portals on the front side's upper and/or lower edges of a linedef, if the sector in front of the linedef is tall enough compared to the back sector to expose them. It is the only way to enable such portals, which will copy the sector portal(s) from the backside, if any. Example flags fields -- All of these are equivalent: // This is the only syntax that does not require quotations. linedef { extflags CROSS|PLAYER|MISSILE|REPEAT } // All of these syntaxes must be quoted, because unquoted strings in // ExtraData cannot contain spaces, commas, or plus signs. linedef { extflags "CROSS PLAYER MISSILE REPEAT" } linedef { extflags "CROSS | PLAYER | MISSILE | REPEAT" } linedef { extflags "CROSS+PLAYER+MISSILE+REPEAT" } linedef { extflags "CROSS + PLAYER + MISSILE + REPEAT" } linedef { extflags "CROSS,PLAYER,MISSILE,REPEAT" } linedef { extflags "CROSS, PLAYER, MISSILE, REPEAT" }
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