Ai debug los

A console variable that is used to inspect what (apart from ordinary world brushes) blocks NPC LOS. When active, anything that blocks NPC line-of-sight will be highlighted with white bounding boxes.

ai_debug_los 0

Do not highlight anything. (Default)

ai_debug_los 1

Highlights all things that currently block LOS.

ai_debug_los 2

Highlights all things that can potentially block LOS as well (like disabled brushes that can be enabled).

This variable is a cheat.

See also

• visibility optimization
• Tool textures