Houdini 20.0 Unreal

Houdini Engine Console Commands

A quick reference for console commands in Houdini Engine.

The Command Console is located at the bottom of the Unreal Editor window. You can jump directly to the Command Console entry field by pressin `.

See Houdini Engine menu for other action items.

View keys

Command

Function

Houdini.RestartSession

Stops current session and starts a new one

Houdini.OpenSessionSync

Stops the current session, opens Houdini, and starts a Session Sync session See Session sync for more information.

Houdini.Open

Opens the current level with Houdini assets in a new Houdini

Houdini.Save

Saves current Houdini scene as a .hip file

Houdini.Clean

Deletes the temporary files in the temp folder

Houdini.CookAll

Recooks all Houdini Asset Actors in the current level

Houdini.Cook

Recooks selected Houdini Asset Actors

Houdini.RebuildAll

Rebuilds all Houdini Asset Actors in the current level

Houdini.Rebuild

Rebuilds selected Houdini Asset Actors

Houdini.BakeAll

Bakes and replaces all Houdini Asset Actors with blueprints in the current level

Houdini.Bake

Bakes and replaces selected Houdini Asset Actors with blueprints

Houdini.RefineAll

Replaces all Houdini proxy meshes with UStaticMesh instances

Houdini.Pause

Pauses or resumes Houdini Engine from cooking assets

Unreal

Getting started

Basics

Using Houdini Engine

Reference

Houdini Engine for Unreal Engine is a plug-in that allows integration of Houdini technology into Unreal. Session Sync and Node Sync are two features of the Houdini Engine Plugin to interact with a live session of Houdini.

This plug-in brings Houdini’s powerful and flexible procedural workflow into Unreal Engine through Houdini Digital Assets. Artists can interactively adjust asset parameters inside the editor and use Unreal assets as inputs. Houdini’s procedural engine will then “cook” the asset and the results will be available in the editor without the need for baking.

General information:

Compatibility:

Currently, the plugins has binaries that have been built for UE5.3, 5.2, 5.1, 5.0, UE4.27 and UE4.26, and is linked with the latest production build of Houdini.

Source code for the plugin is available on this repository for UE5.3, 5.2, 5.1, 5.0, UE4.27, UE4.26.

Note

UE5.1 and UE5.0 use the same source files/branches, the 5.0 sources are also intended to be used with 5.1.

Support and reporting bugs:

SessionSync

The Houdini Engine SessionSync feature allows you to connect to a session of Houdini Engine running inside Houdini with its GUI. It supports all the features of the regular Houdini Engine workflow and additional features specific to Session Sync.

Houdini Engine uses a non-UI version of Houdini while Session Sync lets you see and interact with the Houdini session through Houdini’s user interface. It also synchronizes changes made in either Unreal or Houdini so both programs can make changes and see the same results.

NodeSync

NodeSync is a feature for the Houdini Unreal Engine Plugin that enables sharing assets between Unreal and Houdini Session Sync. It works for Skeletal and static meshes.

You can send and receive data to and from Unreal without a dedicated HDA. It works with Static and Skeletal meshes as well as Actors.

Houdini Niagara

The Houdini-Niagara plugin allows you to exchange point cloud data between Houdini and Unreal’s Niagara system using the HoudiniNiagara Data Interface. You can export Houdini’s attribute data as HoudiniPointCache assets. These can then be imported into Unreal to use the Niagara systems and emitters to create complex effects and particle systems.

The Houdini KineFX Live Link plugin lets you control rigs in Unreal directly from KineFX in Houdini.