Collision detection without RigidBody2D ?

Hello,

I'm new with Unity.

I want to detect collision between 2 sprites.
I add 2 Box Collider 2D but there is no collision detection.
This script doesn't work :

Code (csharp):

1.     void OnTriggerEnter2D(Collider2D other) {
2.         Debug.Log (other);
3.     }
4.     void OnTriggerExit2D(Collider2D other) {
5.         Debug.Log (other);
6.     }

I have to add a RigidBody in one of my sprite to detect collison.
But I don't want any physic engine in my game.

Thanks.

 

You can't avoid the rigidbody. But you can avoid the physics.

http://unitygems.com/mistakes1/

 

Attach a rigidbody to your sprites with gravity scale set to 0 and a box collider and it will work. This is by in fact the way box2d is designed.