Houdini Engine for Unity (v2 beta)
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Getting Started


If you do have the old plug-in (v1) in your project, it is recommended to remove it before installing the new plug-in (i.e. delete folders Houdini/ and HoudiniApi/) in your Unity project. Note that while you can keep the old plug-in in your project, and both should technically work, it is not recommended as it can get confusing in terms of workflow and usability.

If you have an older version of v2, remove it by deleting the Assets/Plugins/HoudiniEngineUnity folder from your Unity project.

Minimum Requirements:

  • Windows 10 or macOS 10.12 or Linux (compatible versions with both Houdini and Unity)
  • Unity 5.6 or newer
  • Houdini or Houdini Engine 16.5.378 or newer

Installing on Windows or macOS

First, install Houdini or Houdini Engine with the Unity plug-in installation option enabled. This will place the new plug-in at Houdini_installation/engine/unity/HoudiniEngineUnity_v2_beta.unitypackage.


To install the new plug-in into your Unity project, from the Unity menu, go to Assets > Import Package > Custom Package, and choose HoudiniEngineUnity_v2_beta.unitypackage. Make sure all the files are selected (they should be by default), and select Import. It should install the plug-in into Assets/Plugins/HoudiniEngineUnity.

Installing on Linux

First, install Houdini or Houdini Engine with the Houdini Engine for Unity option enabled. This will place the plug-in source folder at Houdini_installation/engine/unity/v2/Assets/Plugins/HoudiniEngineUnity (e.g. /opt/hfs16.5.497/engine/unity/v2/Assets/Plugins/HoudiniEngineUnity)

Create a Plugins folder in your Unity project's Assets folder (e.g. Assets/Plugins) if it does not exist. Then copy the HoudiniEngineUnity folder along with its contents into your Unity project's Assets/Plugins folder. When you open Unity, it will automatically import all the necessary files. Make sure to have deleted the previous Assets/Plugins/HoudiniEngineUnity folder.

Verify the plug-in is loaded

Once installed, check if the plug-in has been loaded successfully. To do that:

  1. Open the Houdini Engine Unity menu at the top. It will show up when the mouse cursor is over the menu bar.
  2. Select Houdini Engine Unity -> New Curve Asset from the menu.

If successfully installed the plug-in, A new GameObject will be created in the Hierarchy window and automatically selected. The Scene window will display the new Curve Editor, and the Inspector will display the new interface for working with HDAs. See image below:


If menu does not show up or if the curve is not created, there is a problem with the installation. Check the Unity Console window (Window -> Console) for any errors and log messages.

First Steps

The Houdini Engine plug-in provides the ability to import data generated by a Houdini Digital Asset (.hda) directly into Unity. See Houdini Assets for more information.

Special assets can also be created in Unity. See the following sections for more information: