godot-stealth-perception

To make a Godot stealth enemy detect the player, use a VisionCone3D for sight and a custom HearingArea for noise alerts. This setup ensures enemies notice visible players and react to sound even when the player is out of sight.

The best way to handle enemy aggro and search behavior in Godot stealth AI is using an FSM with Patrol, Aggro, Alert, and Search states. This tracks the last known position so enemies investigate before returning to patrol.

Godot enemies snap between patrolling and chasing when missing FSM transitions for Alert and Search. Implementing a last known position tracking system allows the enemy to investigate lost targets and recover smoothly into patrol behavior.

Distance checks alone are insufficient for stealth games. Combining vision cone detection with line-of-sight checks and hearing-based noise alerts provides believable enemy perception where targets are detected through sight or sound.

To set up an FSM for enemy perception in Godot, wire a VisionCone3D and HearingArea into state transitions for Patrol, Aggro, Alert, and Search. This gates player detection using player groups and archetype-driven tuning.

You need a custom HearingArea to detect player noise in Godot. It uses an emit_noise seam so noises alert enemies even when the player is out of sight, enabling hearing-based aggro for stealth AI scenarios.