{"id":307,"date":"2014-10-05T20:00:46","date_gmt":"2014-10-05T20:00:46","guid":{"rendered":"http:\/\/blog.restemeier.com\/?p=307"},"modified":"2014-12-14T09:47:42","modified_gmt":"2014-12-14T09:47:42","slug":"unity3d-component-setup-from-a-blender-scene","status":"publish","type":"post","link":"http:\/\/blog.restemeier.com\/?p=307","title":{"rendered":"Unity3D component setup from a Blender scene"},"content":{"rendered":"

It is sometimes convenient to specify the component setup of a model in Blender<\/a> instead of Unity3D<\/a>, to hide implementation details and to make the life of artists and designers easier. This is for example useful to specify invisible hits, or areas that can’t be navigated by AI. The easiest way to do that is to use custom properties in Blender.<\/p>\n

\"Custom<\/a><\/p>\n

Blender allows to add custom string, float or integer properties to an object. The custom properties that are attached to meshes, materials or textures are stored separately, and are currently not picked up by Unity3D.<\/p>\n

The new binary FBX exporter (from Blender version 2.71+) can write these values to a FBX file, which Unity3D can pick up during import. The automatic Blender importer in Unity3D still uses the old Ascii exporter, so you need to either export files manually, or modify the Unity3D import script to select the new exporter. I think it is a good idea to get the latest FBX exporter scripts from the nightly build<\/a>, to get many fixes over the version released in 2.71.<\/p>\n

\"Bildschirmfoto<\/a><\/p>\n

The new binary exporter needs to be selected, and “custom properties” needs to be enabled. I modified my Blender and Unity3D scripts to always use the new exporter and have “custom properties” enabled when models are imported.<\/p>\n

On the Unity3D side they are received with AssetPostprocessor.OnPostprocessGameObjectWithUserProperties<\/a>. It is a good idea to start with the example script to see if the custom properties are coming across.<\/p>\n

\"Example<\/a><\/p>\n

I am using several custom properties currently:<\/p>\n