Help Obi Rope Lenght Problem

[josemendez]

- Is there any difference between Handles and Pin Constraints?

Handles were replaced by Attachments in 5.0. I you mean if Attachments are the same as pin constraints, not exactly.

Attachments can be static or dynamic. Static attachments are implemented using fixed particles (particles with their inverseMass set to 0). Dynamic attachments are implemented using pin constraints.

From the pin constraints manual page:
http://obi.virtualmethodstudio.com/tutor...aints.html

Unlike most other constraints, pin constraints aren't stored in a blueprint. They are automatically created and managed by dynamic particle attachments.

And from the attachments page:
http://obi.virtualmethodstudio.com/tutor...ments.html

Internally, dynamic attachments use pin constraints. Read the pin constraints section for more info on pin constraints.

- When I change the particle mass, the particles created in runtime are also have the same mass amount, right?

Yes, that's the whole point of blueprints. When you instantiate a blueprint, the runtime particle properties are copied from the blueprint values.