Climbing on rope and fix to move only on x, y

[josemendez]

Is it very hard to create an Obi rope that can a player climb?

Depends on how familiar you are with 3d matrix/vector math. If you can convert data back and forth between local/world space, and understand some basic vector stuff (dot/cross product, projection, normalization, etc), it should be fairly easy once you get used to Obi's particle-based approach.

Now I am using raycasts or sphere cast on the old rope and that is working good. 

You can use these with Obi too:
http://obi.virtualmethodstudio.com/manua...eries.html