Help Issue Saving/Loading Particle Positions in play mode using ObiRope v7.0

[josemendez]

Hello again,

I’ve managed to work around the async issues for now.

Regarding your comment when adding particles:

Code:

while (rope.activeParticleCount < particleCount)
{
    rope.elements.Add(new ObiStructuralElement
    {
        particle1 = rope.elements[^1].particle1, //--> these are not correct!
        particle2 = rope.elements[^1].particle2, //--> these are not correct!
        restLength = rope.interParticleDistance
    });
    rope.ActivateParticle();
}

How can I determine the last active particle here? In other words, what should particle1 and particle2 be?

What this code does is simply append a new element and a new particle to the rope. "()" being a particle and "-----" being an element linking 2 particles, a rope looks like this:

( A )------( B )-----( C )------( D )

And the list of elements for this rope would be:

element 1: particle1 = A, particle2 = B
element 2: particle1 = B, particle2 = C,
element 3: particle1 = C, particle2 = D

I was not able to acquire index of the particle that was activated last.

Just like elements, particles are stored in a list. Activating a particle simply adds an active particle to the list. So rope.activeParticleCount is the index of the particle that's going to get activated next, and rope.activeParticleCount-1 the index of the last active particle.

So when adding a new element, its first particle must be the second particle of the previous element. Its second particle must of course be the new particle we are about to activate.

Code:

rope.elements.Add(new ObiStructuralElement
    {
        particle1 = rope.elements[^1].particle2,
        particle2 = rope.solverIndices[rope.activeParticleCount],
        restLength = rope.interParticleDistance
    });

kind regards