Linedef type 146

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Sonic standing on the sides of an FOF with intangible flats.

Linedef type 146, Only Tangible from Sides, is a type of floor over floor block which has intangible and invisible flats but solid sides.

Setup

The floor height, and ceiling height of the FOF are determined by the floor height and ceiling height of the control sector, and the sidedefs of the FOF's walls are determined by the sidedef of the controlling linedef.

The light level of the control sector will determine the brightness of the shadow cast by the FOF. If the light level of the control sector is lower than that of the target sector, then it will cast a dark shadow. If the light level of the control sector is higher than that of the target sector, then the FOF will illuminate the area below it. If the light level of the control sector is equal to that of the target sector, than the FOF will not affect the light of the area below it.

Sample

Example WAD: ex_ld146_fofonlytangiblefromsides.wad
  Linedef types - Floor over floor [view]
Solid:
Solid, Opaque, ShadowcastingSolid, Opaque, Non-ShadowcastingSolid, TranslucentSolid, Sides OnlySolid, No SidesSolid, InvisibleIntangible from Bottom, OpaqueIntangible from Bottom, TranslucentIntangible from Bottom, Translucent, No SidesIntangible from Top, OpaqueIntangible from Top, TranslucentIntangible from Top, Translucent, No SidesOnly Tangible from Sides
Intangible:
Water, OpaqueWater, TranslucentWater, Opaque, No SidesWater, Translucent, No SidesGoo Water, TranslucentGoo Water, Translucent, No SidesIntangible, OpaqueIntangible, TranslucentIntangible, Sides OnlyIntangible, Invisible
Moving:
Air BobbingAir Bobbing (Adjustable)Reverse Air Bobbing (Adjustable)Floating, BobbingRising Platform, Solid, Opaque, ShadowcastingRising Platform, Solid, Opaque, Non-ShadowcastingRising Platform, Solid, TranslucentRising Platform, Solid, InvisibleRising Platform, Intangible from Bottom, OpaqueRising Platform, Intangible from Bottom, Translucent
Crumbling:
Crumbling, RespawnCrumbling, No RespawnCrumbling, Respawn, Intangible from BottomCrumbling, No Respawn, Intangible from BottomCrumbling, Respawn, Intangible from Bottom, TranslucentCrumbling, No Respawn, Intangible from Bottom, TranslucentCrumbling, Respawn, Floating, BobbingCrumbling, No Respawn, Floating, BobbingCrumbling, Respawn, FloatingCrumbling, No Respawn, FloatingCrumbling, Respawn, Air Bobbing
Special:
Light BlockHalf Light BlockFog BlockMario BlockThwomp BlockShatter BlockShatter Block, TranslucentBustable BlockSpin-Bustable BlockSpin-Bustable Block, TranslucentQuicksandLaserCustom FOF