I can pass though the models

When I make a model in an external editing software and import it into unity, my player can go through that model.

1. Your question (title) and description contradict each other. 2. Exclamation points do not help anyone. 3. You could get the answer in 10 secs of googling. [Check for coliders.][1] [1]: http://docs.unity3d.com/Documentation/Components/comp-DynamicsGroup.html

2 Answers

2

You need to add a collider to the model. Select your Game Object then click at the menu Component → Physics → Collider. If you need help on which collider to chose feel free to ask.

Use colliders.