Rope that can be in water

[lufydad]

Yes, you can add forces to individual particles, and get/set any particle property. See:
http://obi.virtualmethodstudio.com/manua...icles.html

You can also retrieve contact data and make spatial queries such as raycasts, box overlaps, etc:
http://obi.virtualmethodstudio.com/manua...sions.html
http://obi.virtualmethodstudio.com/manua...eries.html

Thanks for your answer, indeed I didn't saw the property externalForces in ObiSolver.

Here is an example :

Code:

for (int i = 0; i < actor.solverIndices.Length; ++i)
{

     // retrieve the particle index in the solver:
     int solverIndex = actor.solverIndices[i];
     
     if(IsUnderWater(actor.solver.positions[solverIndex])
         actor.solver.externalForces[solverIndex] = MyForceForUnderWater;
     else
         actor.solver.externalForces[solverIndex] = MyForceForAboveWater;
}