PAS

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PAS or Potentially Audible Set

PAS is a kind of bounding-box for Player or NPC AI sound detection. ^[Clarify] It is measured as the set visleaves which are audible from the visleaf occupied by the Sensing NPC or Player. ^[Clarify] Similar to PVS, A PAS-test is only the first filter that a sound must pass in order to be audible to the NPC^[Clarify]. An areaportal can be used to toggle whether a visleaf is part of the PAS.

Note: Quake II uses the term PHS (Potentially Hearable Set) instead.

See also

• NPC Sensing - The group that PAS falls under.
• AI Perception Behavior Enhancement - An easy code edit that will make an NPC investigate any sound it hears.
• Talk:NPC Sensing - Information about PAS.