Linedef type 258

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Laser FOFs in Egg Rock Zone Act 1.

Linedef type 258, Laser, is a type of floor over floor block which acts like a laser beam. This FOF is intangible, blinks very rapidly, generates laser ambience (sound sfx_laser), and harms the player on contact with generic damage. It is commonly used with the REDWALL texture and the REDFLR flat, or other solid-color textures and flats. Lasers can be found throughout Egg Rock Zone, where they exhibit various elaborate effects and movement patterns created with the use of other linedef specials.


The flats, floor height, and ceiling height of the laser FOF are determined by the flats, floor height, and ceiling height of the control sector, and the sidedefs of the laser FOF's walls are determined by the sidedef of the controlling linedef. If the Slope Skew flag is checked, the laser will not damage bosses.

Aesthetic tips

It is recommended that lasers be assigned solid colors on their sides and flats, to simulate a realistic laser beam. Solid red and solid blue laser beams look the best, although yellow, orange, purple, green, and white lasers are also possible.


Example WAD: ex_ld258_foflaserblock.wad
  Linedef typesFloor over floor [view]
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
Water, OpaqueWater, TranslucentWater, Opaque, No SidesWater, Translucent, No SidesGoo Water, TranslucentGoo Water, Translucent, No SidesIntangible, OpaqueIntangible, TranslucentIntangible, Sides OnlyIntangible, Invisible
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, 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
Light BlockHalf Light BlockFog BlockMario BlockThwomp BlockShatter BlockShatter Block, TranslucentBustable BlockSpin-Bustable BlockSpin-Bustable Block, TranslucentQuicksandLaserCustom FOF