Hi all, I am starting a new processing project, I need some kind of world physics, for that I am using the Fisica Library. I am trying to add a specific body that do not collide with one of the others, but can’t find a way to do it, don’t even know if it is possible…
In other words: I will have 5 bodys, object 1 needs to not collide with object 2, but it needs to collide with 3, 4 and 5.
Thanks for the help, keep it up 
Hard to tell without more description of what you are trying to do and why, but based on the example here you could use filtering.
Read the Fixtures chapter and the Filtering section of the Box2D manual (which Fisica is a wrapper for).
In the Fisica API, that might be here (untested):
Hi, i have to do a project and i am having the same problem as you did. Did you find a way to solve it?. If you did, please let me know how.
Thanks