Groups: Empties and Instances

I have an empty representing a group with a dynamic object and armature, and it works fine. I have a group with a couple static planes, which wouldn’t even appear in-game as a group instance or an empty. The lower plane’s collision seems to work, though. How can I make the whole group work?

Maybe you’re normals are facing the wrong direction? It’s hard to tell what the issue here is. Could you post an image or video?

I don’t think that’s the case. The guy was falling even though there was supposed to be ground. However, I just found out that objects in a group will appear if they’re also parented to each other…or with a “camera” sensor.

This should give an idea of what has worked so far and what hasn’t.

I have no idea how you setup your scene. Here some general explanations:

  • Groups do not exist in the BGE.
  • Instances (formally known as dupli group) exists and are supported.
  • In difference to Blender - instance objects have no parent/child relationship to the instantiating object. They will not move with it.
  • The instantiating object has no parent/child relationship to the instance objects. It will not move with them.
  • By default the instance objects are separate objects. When you want a relationship you need to assign it t the group, the instance objects will inherit it from there.
  • Objects that are not part of the group are not included in the instance.
  • Be aware assigning multiple groups to one object can result in unwanted effects.
  • Parent objects need to be included in the group. Otherwise the instance will not contain the children regardless if they are part of the group or not.
  • Children of unsupported object types (such as curves) will never be added to the scene (regardless if you use instances or not).