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181:Plane_Align (floor, ceiling, lineid)

Warning: This special is not fully supported by the UDMF map format. Certain parameters, noted below, have been made obsolete by the ability to directly specify properties within the linedef structure. These parameters should be set to 0 when using the UDMF format.

  • floor: “1” slopes the floor on front side of the line; “2” slopes the floor on the back side.
  • ceiling: Same as for floor, but for the ceiling plane, respectively.
  • lineid: also sets this line's id if non-zero. Obsolete in UDMF.

Note: A value of 0 means no sloping is applied.

Aligns the plane of the floor and/or ceiling depending on the values floor and ceiling. For a more extensive look, check out slopes.


An example WAD can be found here.

Nuvolachalk.png Note: This article lists no examples. If you make use of this feature in your own project(s) or know of any basic examples that could be shared, please add them. This will make it easier to understand for future authors seeking assistance. Your contributions are greatly appreciated.

Conversions from linedef types

The following Doom map format types can be converted as Plane_Align:

Type Conversion Trigger
MiniZDoomLogoIcon.pngZDoom 340:Slope Front Floor Plane_Align (1, 0)
MiniZDoomLogoIcon.pngZDoom 341:Slope Front Ceiling Plane_Align (0, 1)
MiniZDoomLogoIcon.pngZDoom 342:Slope Front Floor & Ceiling Plane_Align (1, 1)
MiniZDoomLogoIcon.pngZDoom 343:Slope Back Floor Plane_Align (2, 0)
MiniZDoomLogoIcon.pngZDoom 344:Slope Back Ceiling Plane_Align (0, 2)
MiniZDoomLogoIcon.pngZDoom 345:Slope Back Floor & Ceiling Plane_Align (2, 2)
MiniZDoomLogoIcon.pngZDoom 346:Slope Back Floor & Front Ceiling Plane_Align (2, 1)
MiniZDoomLogoIcon.pngZDoom 347:Slope Front Floor & Back Ceiling Plane_Align (1, 2)
MiniEternityLogoIcon.pngEternity 386:Slope_FrontsectorFloor Plane_Align (1, 0)
MiniEternityLogoIcon.pngEternity 387:Slope_FrontsectorCeiling Plane_Align (0, 1)
MiniEternityLogoIcon.pngEternity 388:Slope_FrontsectorFloorAndCeiling Plane_Align (1, 1)
MiniEternityLogoIcon.pngEternity 389:Slope_BacksectorFloor Plane_Align (2, 0)
MiniEternityLogoIcon.pngEternity 390:Slope_BacksectorCeiling Plane_Align (0, 2)
MiniEternityLogoIcon.pngEternity 391:Slope_BacksectorFloorAndCeiling Plane_Align (2, 2)
MiniEternityLogoIcon.pngEternity 392:Slope_BackFloorAndFrontCeiling Plane_Align (2, 1)
MiniEternityLogoIcon.pngEternity 393:Slope_BackCeilingAndFrontFloor Plane_Align (1, 2)

External links