Category:Trigger entities

Trigger entities use Brush geometry (rather than Studiomodel or Sprite geometry) to define a volume which is used to trigger events when an entity enters it.

• Trigger brushes are generally NotSolid and invisible.
• Triggers are passive: activated on touch, whereas switches and buttons require specific activation.
• Some triggers are used simply to fire I/O events when triggered, whilst others have a specific localized effects on entities in touch with the brush.
• Triggers often inherit CBaseTrigger, but this is not always the case.