Trigger portal

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January 2024

This entity is not in the FGD by default.
See below for instructions on making it available.

trigger_portal is an brush entity in the Source base code. It moves touched entity to a target location, changing the model's orientation to match the exit target. It differs from trigger_teleport in that it "reorients physics" and (probably) preserves velocity. It seems to be an early test of the functionality of portals, which was replaced by prop_portal.

Note:This entity is unavailable in any Valve game, though it has been re-enabled in Portal 2: Community Edition . Other mods using custom binaries can enable the entity by editing server_base.vpc to include trigger_portal.cpp before building the project, or by adding the file within Visual Studio after building the project.

Bug:The code for this entity will not compile on its own. See below for how to fix it.

FGD Code

@SolidClass base(Trigger, Angles) = trigger_portal :
	"A trigger volume which teleports touched entities and reorients their physics."
[
	RemotePortal(target_destination) : "Remote Portal" : : "The trigger_portal linked to this entity. Entities that touch this entity will be teleported to the Remote Portal."

	//Inputs
	input SetRemotePortal(string) : "Set the remote portal to the specified trigger_portal."
]

Code Fixes

Replace line 278 and 302 in trigger_portal.cpp with:

SetContextThink( &CTriggerPortal::DisabledThink, gpGlobals->curtime + 0.1, TRIGGER_DISABLED_THINK );

Remove lines 33 and 77-79, which should be:

DECLARE_SERVERCLASS();

IMPLEMENT_SERVERCLASS_ST( CTriggerPortal, DT_TriggerPortal )
 	SendPropEHandle(SENDINFO(m_hRemotePortal)),
END_SEND_TABLE()

There is no client class to send this entity handle to, nor is one needed.

Keyvalues

Remote Portal (RemotePortal) <targetname>

The trigger_portal linked to this entity. Entities that touch this entity will be teleported to the Remote Portal.

BaseTrigger

Filter Name (filtername) <filter> A filter entity to test potential activators against. Start Disabled (StartDisabled) <boolean> Stay dormant until activated (with theEnableinput).

Pitch Yaw Roll (Y Z X) (angles) <QAngle>

This entity's orientation in the world. Pitch is rotation around the Y axis, yaw is the rotation around the Z axis, roll is the rotation around the X axis.

Flags

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

SetRemotePortal <stringRedirectInput/string>

Set the remote portal to the specified trigger_portal.

BaseTrigger

Toggle Toggles this trigger between enabled and disabled states. Enable Enable trigger Disable Disable trigger TouchTest  (in all games since ) Triggers either the OnTouching or OnNotTouching outputs for whether anything is touching this entity. Bug:Sleeping prop_physics will never fire "OnTouching". Also applies to entities using prop_physics as base.  (tested in: ) StartTouch  (in all games since ) !FGD Behave as if the !caller entity had just entered the trigger volume. Accepts non-physical entities. EndTouch  (in all games since ) !FGD Behave as if !caller had just exited the trigger volume. DisableAndEndTouch  (only in ) Disables this trigger and calls EndTouch on all currently-touching entities.

Outputs

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.