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+--- Thread: Help Positions Saving & Loading (/thread-819.html)
Positions Saving & Loading - Loki_Priest - 16-01-2019
Hello.
I need to save disposed positions of particles (or vertices) after closing the game and to load them when I start the game.
I managed to write actor's positions and obiCloth's meshVertices arrays to XML files and to read them.
But I faced with two problems:
1) It's ok to SetParticlePositions using the values from the file; but it was not possible to get changed positions of particles (I mean the position[] array doesn't change, however the real picture is ok while deforming the object). Maybe it's necessary to RequireRenderablePosition (or/and PullDataFromSolver), isn't it?
2) On the other hand, values of meshVertices array change when I deform the mesh, but I have no luck in changing them manually with the values from the XML file (I mean the clothMesh from ObiClothBase class).
Maybe I missed something important?
For clarity, here is an example of what I need:
1) I start my game with a ball.
[attachment=215]
2) Then I deform it (via the "finger" collider), save it, and quit the game.
[attachment=217]
3) When I open the game again I am to see the second picture.
RE: Positions Saving & Loading - josemendez - 16-01-2019
(16-01-2019, 05:03 AM)Loki_Priest Wrote: Hello.
I need to save disposed positions of particles (or vertices) after closing the game and to load them when I start the game.
I managed to write actor's positions and obiCloth's meshVertices arrays to XML files and to read them.
But I faced with two problems:
1) It's ok to SetParticlePositions using the values from the file; but it was not possible to get changed positions of particles (I mean the position[] array doesn't change, however the real picture is ok while deforming the object). Maybe it's necessary to RequireRenderablePosition (or/and PullDataFromSolver), isn't it?
2) On the other hand, values of meshVertices array change when I deform the mesh, but I have no luck in changing them manually with the values from the XML file (I mean the clothMesh from ObiClothBase class).
Maybe I missed something important?
For clarity, here is an example of what I need:
1) I start my game with a ball.
2) Then I deform it (via the "finger" collider), save it, and quit the game.
3) When I open the game again I am to see the second picture.
1) Correct, you need to use either renderable positions, call PullDataFromSolver(ParticleData.POSITIONS) to update the actor array, or use Oni.GetParticlePositions(). In your case, I'd use either method 1 or 2, 1 is easier. Renderable positions -as the name implies-, are used for smooth rendering and usually contain interpolated positions between two physics updates, so it's best to use regular positions if you intend to save/load them. See:
http://obi.virtualmethodstudio.com/tutorials/scriptingparticles.html
2) mesh vertices are modified internally the physics engine, and set at the end of every frame. You should either set the particle positions array and call PushDataToSolver() -opposite to PullDataFromSolver-, or Oni.SetParticlePositions.
RE: Positions Saving & Loading - Loki_Priest - 16-01-2019
Thanks a lot! Now it works properly.
Code:
void SaveAll()
{
//obiCloth.Solver.RequireRenderablePositions();
obiCloth.PullDataFromSolver(ParticleData.POSITIONS);
SaveDB(_xml3, s3, obiCloth.positions);
//obiCloth.Solver.RelinquishRenderablePositions();
Debug.Log("Saved");
}
public void LoadMesh()
{
if (obiCloth.InSolver)
{
obiCloth.PullDataFromSolver(ParticleData.POSITIONS);
for (int i = 0; i < any.Length; i++)
{
obiCloth.positions[i] = any[i] + obiCloth.transform.localPosition;
}
obiCloth.PushDataToSolver(ParticleData.POSITIONS);
}
}
public void LoadAll()
{
LoadAny(_xml3, s3, any);
if (obiCloth != null)
{
if (obiCloth.Solver != null)
{
LoadMesh();
}
}
}