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This trigger fires when an NPC is making a decision to perform an AI action.

The revision notes for this trigger say "This trigger will fire only if EF_NPCAct_Triggers is set and EF_Minimize_Triggers is NOT set in the sphere.ini file...", however in more recent versions this trigger may be controlled by the NPC_AI_EXTRA setting.

AI-related trigger. If the situation is such that the NPC will do something due to it's AI - things like animals pooping the ground, vendors going off/on duty, (un)equipping a lightsource when it's dark, (un)equipping a weapon when fighting, stabler feeding animals or giving players food for their animals etc... this trigger will be fired.

On RETURN 0 the NPC will continue with what it wants to do, RETURN 1 will abort it.

Fires on:


The following object references are explicitly available for this trigger:

Name Description
I The NPC performing the action.
SRC The NPC performing the action.


The following arguments are set for this trigger. If an argument is marked as "In" then a value will be passed in to the trigger, if an argument is marked as "Out" then it can be set to a value to affect Sphere's behaviour:

No arguments are set for this trigger.

Return Values

The following return values are explicitly defined for this trigger:

Return Value Description
1 Prevents any hardcoded AI action taking place.