I’m new to the DCL community but I’m an architect with quite a bit of 3D modeling experience and a huge interest in game and digital content design.
Unfortunately for me, the industry software for architects aren’t the best best for game development (Rhino 3D, Sketchup, Revit, etc…). I was introduced to Unity in school and have become familiar with coding in Unity and modeling with Probuilder and Polybrush. To me, of the programs that I know well, Unity seems to be the best alternative to Blender or 3DS Max since the gameobject/scene framework seem to be built similarly to DCL.
I’ve been messing with prototyping some simple scenes and exporting them to the DCL SDK (using the Fairwood DecentralandUnityPlugin) or even just creating a model and exporting it as a glTF (using the Plattar Unity-glTF-Exporter) and importing it to the in-browser builder but it seems whatever I export from Unity will either not appear at all due to mesh renderer/texturing issues and/or they’ll appear perfect but won’t have colliders. The texturing issue seems a bit easier to troubleshoot since I’ve been able to pull in a few of my meshes with correct texturing. The collider issue however, is persistent with any object I bring in from Unity.
I did find the DCL guide about adding colliders prior to exporting by adding the “_collider” suffix. I’ve tried that by naming the gameobject itself with the “_collider” suffix, creating a child gameobject with just a collider and the “_collider” suffix or duplicating the object as a dummy with the “_collider” suffix and exporting them separately but nothing seems to work for custom built meshes. I say custom built meshes because the one thing that did seem to work was the Fairwood plugin has “DCL Object” primitive prefabs that render and collide correctly when you preview a scene, but nothing else will. Even the custom meshes in their example scene don’t appear or collide correctly which I assume is due to changes in the Unity/DCL builds since they developed their plugin. Even when I edit one of their “DCL Object” primitives using Probuilder to make some wonky shape, it still renders in the DCL SDK as the original cylinder/cube/sphere that it was created as since it has a “DCL Cube” or “DCL Cylinder” script attached. The Plattar plugin exports any mesh perfectly but no matter what collider I add (mesh/box/capsule), no collision is registered in the scene.
The only idea I have left, short of delving into the code which I’m not so sure I could troubleshoot such a high level issue, is to add a ton of their “DCL Cube” objects, remove the mesh renderers and approximate my object’s walls but that seems like an ass-backwards way of doing it, especially since I’d have to adjust all the colliders by hand when Unity’s colliders approximate the size/location for you. I’m also not certain that it would work the way I think it would and would likely add a fair number of extra triangles.
My question is, are there any official plugins or tools for Unity that work well with DCL. Whether it’s exporting glTFs or Glbs, or exporting entire scenes to the SDK? It seems that there’s a ton of resources out there for this but all of them were built for the 2018 build of Unity or earlier and no longer work or work incorrectly. If there is nothing official, is there any documentation for working through issues like this that anyone has found?
Sorry for the long post and any help with this issue is greatly appreciated, it’s very frustrating.