Trigger

Entity Description

Trigger is a generic trigger entity.

As an entity prefix, trigger entities are spatial volumes (in other words, brushed-based entities) which trigger outputs depending on what touches them and how.

The two most common triggers are:

• trigger_once
• trigger_multiple

Several other trigger entities also exist.

Keyvalues

• {| class="mw-collapsible mw-collapsed" style="background:initial;float:no;margin-bottom:1em;margin-left:0;padding-right:0.5em;border:1px solid rgba(255,255,255,0.1); border-left:solid 1px #8bb9e0; padding-left:1em;"

|+ style="text-align:left; white-space:nowrap; font-weight:bold; color:#ddd; " | BaseTrigger |

Filter Name (filtername) <filter>

A filter entity to test potential activators against.

Start Disabled (StartDisabled) <boolean>

Stay dormant until activated (with theEnableinput).

|}

Flags

• {| class="mw-collapsible mw-collapsed" style="background:initial;float:no;margin-bottom:1em;margin-left:0;padding-right:0.5em;border:1px solid rgba(255,255,255,0.1); border-left:solid 1px #8bb9e0; padding-left:1em;"

|+ style="text-align:left; white-space:nowrap; font-weight:bold; color:#ddd; " | BaseTrigger |

Everything (not including physics debris) : [64]

Clients (Survivors, Special Infected, Tanks ) : [1]

Only clients in vehicles : [32]

Only clients *not* in vehicles : [512]

Disallow Bots (removed since ) : [4096]

NPCs (Common Infected, Witches ) : [2]

Only player ally NPCs : [16]

Only NPCs in vehicles (respects player ally flag) : [2048]

Physics Objects (not including physics debris) : [8]

Physics debris (include also physics debris) : [1024]

Pushables (Passes entities with classname func_pushable) : [4] 

Deprecated.
Equivalent to using Everything + filter_activator_class that filters func_pushable.

|}

Inputs

• BaseTrigger:

Toggle

Toggles this trigger between enabled and disabled states.

Enable

Enable trigger

Disable

Disable trigger

Outputs

• {| class="mw-collapsible mw-collapsed" style="background:initial;float:no;margin-bottom:1em;margin-left:0;padding-right:0.5em;border:1px solid rgba(255,255,255,0.1); border-left:solid 1px #8bb9e0; padding-left:1em;"

|+ style="text-align:left; white-space:nowrap; font-weight:bold; color:#ddd; " | BaseTrigger |

OnStartTouch

!activator = entity that caused this output
!caller = this entity
Fired when a valid entity starts touching this trigger.

OnStartTouchAll

!activator = entity that caused this output
!caller = this entity
Fired when a valid entity starts touching this trigger, and no other entities are touching it. If there are any other entities touching the trigger when a new one begins to touch, only OnStartTouch will fire.

OnEndTouch

!activator = entity that caused this output
!caller = this entity
Fired when a valid entity stops touching this trigger.

Note:Will also fire for entities touching it when trigger is disabled via Disable input

Warning:This includes entities which are deleted while inside the trigger. In this case !activator will be invalid.

Warning:OnEndTouch can fire before OnStartTouch under certain circumstances^[How?] where both are fired on the same tick and each have the same delay.

Fix:Add a slight delay to OnEndTouch.

OnEndTouchAll

!activator = entity that caused this output
!caller = this entity
Fired when all valid entities stop touching this trigger.

OnTouching  (in all games since )

!activator = !caller = this entity
Fired if something is currently touching this trigger when TouchTest is fired.

OnNotTouching  (in all games since )

!activator = !caller = this entity
Fired if nothing is currently touching this trigger when TouchTest is fired.

|}

See Also

• Inputs and Outputs