!HELP! how to do so you can't go through trees

Questions & Answers
1

Can you help me with that, and explain it?

3

Click on the Terrain and make sure that, in the Inspector, Terrain Collider->Create Tree Colliders box is unchecked.

2

To avoid going through trees, you need two things:

  1. A collision, to notice that you are going through the tree.

  2. You need to react in a sensible way to the collision to avoid going through the tree.

Have a look at the lerpz tutorial: