2D collision system

Unity Engine
1

Hi all, I read many questions on the collision system but still I don’t get it!!! I also looked at the collision matrix here Unity - Manual: Mesh collider component reference but it did not shed any light on the subject.
I am working on a simple platformer where the main character uses melee attacks to fight enemies.
I have this object hierarchy:

  • Player (CharacterController)
  • Axe (BoxCollider, child of player)
  • Enemy (CharacterController)
    Here’s where I am stuck:
    1154693--43990--$collision.png
    Basically, I am not able to detect the collision between the weapon and the enemy. I also tried adding a child BoxCollider to the enemy (as pictured) without success.
    Should I use rigidbodies?
    Thanks!
2

Yes, for a collision to be detected at least one of the colliders needs an attached Rigidbody.

3

use boxes even though your game is 2D to make life easier for yourself.

4

Thanks to both!
I guess rigidbodies is the way to go, then. In the meantime I also found this http://unitygems.com/mistakes1/ and it actually derscribes the same thing.

5

If your using a character controller you don’t need rigidbodys, you can just call on characterController.OnControllerColliderHit

Docs: http://docs.unity3d.com/Documentation/ScriptReference/CharacterController.OnControllerColliderHit.html