Unreal Engine 5 Documentation has been moved to the Epic Developer Community

Unreal Engine 4.26

Unreal Engine 4.27

Unreal Engine 5.0

Unreal Engine 5.1

Unreal Engine 5.2

Unreal Engine 5.3

> Making Interactive Experiences > Artificial Intelligence > Environment Query System > Environment Query System Node Reference

Light Theme

Dark Theme

You can try out this Experimental feature, but we do not recommend shipping projects with it.

Features are sometimes made available in an Experimental state so you can try them out, provide feedback, and see what we are planning. We do not recommend shipping projects with Experimental features. Please keep in mind that we do not guarantee backward compatibility for assets created at the experimental stage, the APIs for these features are subject to change, and we may remove entire Experimental features or specific functionality at our discretion.

Environment Query System Node Reference

Environment Query System Node Reference page.

Choose your operating system:

Windows

macOS

Linux

An Environment Query is actually made up a number of different pieces. You must call an Environment Query from a Behavior Tree , and then the actual Environment Query will use its Generator , reference its Contexts , and use its Tests to give the Behavior Tree the highest weighted result.


Node Type	Description
Generator	Produces the locations or Actors, referred to as Items , that will be actually tested and weighted.
Contexts	Provides a frame of reference for the various Tests and Generators.
Tests	Establishes how the Environment Query decides which Item from the Generator is the best option.

Please refer to the links below for additional information on each subject.

EQS Node Reference: Generators

Describes how Generators are used within the EQS system.

EQS Node Reference: Tests

Describes how to use Tests within EQS to generate the "best" option.

EQS Node Reference: Contexts

Describes how Contexts are used within Tests and Generators in the EQS system.