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Wiki » Reference » volume_ entities » volume_sludge
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volume_sludge

This is an entity on id Tech 4 engines, present on Prey. Below you can find its spawnflags, keys and editor settings for each game that defines it.

Prey

Sludge volume delivers pain to the person entering it, and slows down movement

A dynamic sludge model (using the skin defined by the skin var) will

be automatically spawned and bound to the top of the bbox of this volume

NOTE: Volume damage works, but sludge surface not implemented, yet!

Keys

Key Type Default Description
sludge var sludge (.liquid) file to use as the sludge surface
isSimpleBox bool simple boxes are cheaper and use axis-aligned bounds for checks (1)

Editor

Property Value
Type brush entity
Spawn class hhSludge
Color 0.75 0 0.55

Last changed Sep 21, 2026
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