UNREAL

Plug-In

Open the door to powerful procedural workflows with Houdini Engine for UE4. Houdini’s node-based workflow makes it easy to publish networks of nodes as shareable Houdini Digital Assets. With the Houdini Engine, these assets can be loaded into the Unreal Editor with procedural controls available to artists.

These controls can be used to customize the look of the asset while the Houdini Engine works under the hood to "cook" the node networks and push the results back to UE4. This allows for deep integration of Houdini Digital Assets into an your game development pipeline. While not a runtime solution, Houdini Engine for UE4 provides a procedural content creation solution that makes it possible to build bigger worlds with more detail while working more efficiently.


In addition to the Houdini Engine plug-in outlined below, there are also plug-ins for the Unreal Niagara system and a Live Link plug-in which can be used to control rigs in Unreal directly from Houdini.

Niagara Plug-In

Live Link


1. Download the Houdini Engine

To access the Houdini Engine for UE4, download the latest Houdini installer which includes the UE4 plug-in. While the plug-in connects Unreal Engine to the Engine, a full Houdini install is needed to cook the results under the surface. 

With Houdini 18.5 there are two plug-ins downloaded - the original UE4 plug-in and the UE4 V2 plug-in which became production ready with build 18.5.462+. When you download and install Houdini 18.5 and choose to include the UE4 plug-ins, the old and the new plug-ins go into a directory under Houdini and you can then move it manually to the UE_4.25\Engine\Plugins\Runtime directory.

DOWNLOAD INSTALLER

PLEASE NOTE: The Houdini Engine plug-ins do not work with the FREE Houdini Apprentice license 
and Assets created in the FREE Houdini Apprentice do not work with any of the Houdini Engine licenses.

There is a FREE Houdini Engine Indie license that will let indie users open assets created in either Houdini Indie or Houdini Core/FX.

2. Starter Kit

The Game Jam Starter Kit is a set of procedural game art tools that can be used in the Unreal game editor. This starter kit provides a variety of bread and butter tools that you can use right away to enhance your game environments. These tools can be used inside Unreal using the Houdini Engine plug-in. 


3. Plug-In Docs

To learn more about the Houdini Engine for UE4 plug-in, you can review the online documentation. This material covers many different aspects of the plug-in and how to set up geometry in Houdini to work effectively in the game editor. Learn about special attributes, instancing, landscapes and collisions amongst other valuable topics.


4. Create your Own Asset in Houdini

In this lesson, you will learn how to create a procedural asset in Houdini then publish it for use in UE4. You will also learn how to promote parameters to build a UI for the asset which show up in the Details panel in the Unreal Editor. This lesson will help you get comfortable working back and forth between Houdini and UE4.


5. Learn More

The Game Tools Learning Paths offer a number of games-focused lessons covering Houdini and the Houdini Engine. These lessons teach you how to create digital assets for use in host applications such as Unity and are a great resource for game makers to learn how to go procedural.

GAME TOOLS PATH     WORLD BUILDING PATH     REALTIME FX PATH