---
title: AI Perception
source: https://dev.epicgames.com/documentation/en-us/unreal-engine/ai-perception-in-unreal-engine
version: Unreal Engine 5.8 Documentation
fetched: 2026-10-11
note: 原文摘录（英文要点），供 wiki 引用；非全文
---

# AI Perception

- AI Perception Component (on AIController) acts as a stimuli listener; gathers registered Stimuli Sources; events On Perception Updated / On Target Perception Updated (AI Stimulus: Age, Expiration Age, Strength, Stimulus Location, Receiver Location, Tag, Successfully Sensed).
- Senses: Damage, Hearing (Report Noise Event; Hearing Range), Prediction, Sight (Sight Radius, Lose Sight Radius, Peripheral Vision Half Angle, Detection by Affiliation — affiliation only definable in C++, Auto Success Range), Team, Touch. Max Age (0 = never forgotten). Dominant Sense.
- Forget Stale Actors project setting + Max Age.
- AIPerception Stimuli Source Component: auto register owning actor for senses.
- Debug: apostrophe key, Numpad 4.