Freeze softbody in certain axis

[josemendez]

Can you tell me more about constraining axis by modifying particle properties?
I have tried changing the velocity, angular velocity, even the position of each particles to starting value on every LateUpdate but the softbody still moved a bit upon touching the ground

Hi,

If you've set the positions correctly, there's no way they can possibly deviate from their starting position: you're forcing them to have a certain value in the X and Z axis at the end of each frame.

There's not much to it, something along these lines should work (assuming you've stored starting positions in the startingPos array):

Code:

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

    var pos = actor.solver.positions[index];
    pos.x = startingPos[index].x;
    pos.z = startingPos[index].z;
    actor.solver.positions[index] = pos;
}

Would it be possible for you to share the code you've written to do this?