Colliding with trees using mesh colliders

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I have trees on my terrain that were generated through the tree brush tool. I have "Create tree colliders" checked and my trees all come from a prefab with a mesh collider on it. However, you can still walk through the trees. If I change the collider on the trees to a capsule collider, it works. Also, if mesh colliders simply aren't accepted, which ones are?

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Answer by Tseng · Jul 10, 2011 at 03:19 AM

Only "convex" mesh colliders block/collide with ridigbodies (i.e. your player character).

You can check the "Convex" option to enable it.

http://unity3d.com/support/documentation/ScriptReference/MeshCollider-convex.html

You should use convex Mesh colliders only when you need precise collision detection, otherwise use the primitive ones as they get you better performance

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yami7 · May 18, 2014 at 03:35 PM 0

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i selected "Convex" on my pre-fab tree and it still doesn't work.. http://forum.unity3d.com/threads/127608-Tree-$$anonymous$$ESH-collider-issue-with-prefabs , help :<

getyour411 · May 18, 2014 at 03:43 PM 0

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Use capsule collider

http://docs.unity3d.com/Documentation/Components/terrain-Trees.html

Setting up Tree Collisions

If you'd like your trees to make use of colliders, it's very easy. When you've imported your Tree asset file, all you need to do is instantiate it in the Scene View, add a Capsule Collider and tweak it, and make the GameObject into a new Prefab. Then when you're adding trees to your Terrain, you add the tree Prefab with the Capsule Collider attached. You can only use Capsule Colliders when adding collisions with trees.

Colliding with trees using mesh colliders

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