Box Collider on Trees Are Not Rotating When Painted to Terrain

Questions & Answers
1

I added box colliders to my tree prefabs to match the volume of the tree. Some of my trees have branches that stick out from the base so I made a more rectangular shaped box collider for them to match mesh.

The colliders work as expected for placing the prefabs by hand but when painting to the terrain, the colliders no longer match the mesh. I have random rotation set for the trees so I’m guessing the system is rotating the mesh and not the collider along with it.

Any way to solve this?

2

I am having the same problem currently in Unity 2018.3.12f1. If I use the default tree painter with Unity’s system, and I use the “Random Tree Rotation” option, it will randomize the tree rotation, but any colliders attached to the trees will NOT rotate with it. So in-game, your character will hit invisible colliders that don’t match the tree rotation at all.