Link Bad Guy ID to collision body

[Gibbon99]

Solved: Never mind. I just flicked back to the documentation after writing this, and there it is - setUserData !!

Hi

I've started implementing this library into a 3D engine, but I am unsure how to associate a game object and a collision body together.

Say I have 10 bad guys, with a unique index each. When detecting a collision between the player and a collision body - how do I know which Bad Guy was involved in the collision. With Chipmunk2D for example, you can use your own data structure when creating a physics object - then in the collision function, you can look up the data structure and there is your ID for who is involved in the collision.

Is that what the Entity system is for? If so, I am unsure how to use it.

Any pointers would be great.
Thanks