[SOLVED] C# Code of Fracture Body & Complex tringles mesh or simple tringles mesh?

[ahmad.karami]

 

Hi Unigine Team,

I wrote a simple C# Code of Fracture Body and attached to ObjectMeshDynamic_1 , but does not work in editor(both I tested with C# code and Without C# code) , plus,  I tested a lot parameters of Physics-> Fracture but does not work & this hidden with Broken flag!

Is it possible , Fracture feature does work without code? or I must use C# code? Fracture feature does work in editor or build file (*.exe) ? I must Complex tringles mesh or simple mesh? 

private void Init()
{
Node n = World.GetNodeByName("ObjectMeshDynamic_1");
ObjectMeshDynamic mesh = n as ObjectMeshDynamic;
BodyFracture bf =new BodyFracture(mesh);
bf.CreateShatterPieces(10);
}

Edited April 28, 2020 by ahmad.karami

[karpych11]

Hello,

Your code is correct, but you need to change the threshold for a fracture body. For example, bf.Threshold = 0.05f. With C# components it only works when you press Run button to run the separate instance of the application.

[ahmad.karami]

5 hours ago, karpych11 said:

Hello,

Your code is correct, but you need to change the threshold for a fracture body. For example, bf.Threshold = 0.05f. With C# components it only works when you press Run button to run the separate instance of the application.

thank you so much @karpych11

this is new my code ( does work! )

private void Init()
{
Node n = World.GetNodeByName("ObjectMeshDynamic_1");
ObjectMeshDynamic mesh = n as ObjectMeshDynamic;
BodyFracture bf =new BodyFracture(mesh);
bf.Threshold = 0.02F;
bf.CreateShatterPieces(50);
}

 

 

Edited April 28, 2020 by ahmad.karami

[Kireita]

On 4/28/2020 at 1:00 PM, ahmad.karami said:

thank you so much @karpych11

this is new my code ( does work! )

private void Init()
{
Node n = World.GetNodeByName("ObjectMeshDynamic_1");
ObjectMeshDynamic mesh = n as ObjectMeshDynamic;
BodyFracture bf =new BodyFracture(mesh);
bf.Threshold = 0.02F;
bf.CreateShatterPieces(50);
}

 

 

hey @ahmad.karami, im trying to use your code to shatter an object as well but nothing happens i tried this:

using System;
using System.Collections;
using System.Collections.Generic;
using Unigine;

[Component(PropertyGuid = "c94040114fe1fa3cc478906b5a8beace8335f3d5")]
public class Fracture : Component
{
    [ShowInEditor]
    [Parameter(Tooltip = "Object for shattering")]
    private ObjectMeshDynamic mesh = null;

    private void Init()
    {
        // write here code to be called on component initialization
        BodyFracture bf = new BodyFracture(mesh);
        bf.Threshold = 0.02f;
        bf.CreateShatterPieces(50);
    }

    private void Update()
    {
        // write here code to be called before updating each render frame

    }
}

here is the node info:

 

and here the physics info:

but nothing happens when i simulate or start the game, do you have any suggestions?

 

[fox]

Hi Kireita,

To achieve the desired effect for the volume of your box you can try reducing either the number of pieces or the threshold value. This should help.

Thanks!

[Kireita]

Hey @fox

I tried setting the trheshold to 0.01 and the shatter pieces to 2 but nothing happens when i press simulate.

 

but i did manage to shater it when running by adding bf.broken = true to the init()

but unfortunately the broken pieces don't have the material applied. for some reason.

here is the code:

[Component(PropertyGuid = "c94040114fe1fa3cc478906b5a8beace8335f3d5")]
public class Fracture : Component
{
    [ShowInEditor]
    [Parameter(Tooltip = "Object for shattering")]
    private ObjectMeshDynamic mesh = null;

    [ShowInEditor]
    [Parameter(Tooltip = "Shattered object Material")]
    private Material shatteredMaterial = null;

    BodyFracture bf;
    private void Init()
    {
        // write here code to be called on component initialization
        bf = new BodyFracture(mesh);
        bf.Threshold = 0.01f;
        bf.CreateShatterPieces(2);
        bf.SetMaterial(shatteredMaterial.Name);
        bf.SetSurfaceProperty(shatteredMaterial.Name);
        Unigine.Console.SetPrompt(bf.GetMaterialName());
        bf.Broken = true;
    }

    private void Update()
    {

    }
}

 i made the class so that you can decide the material from the UI:

maybe you can help me?

i just need:

1. to see the mesh shatter when i press the  simulate button 
2. and have the material applied to the shattered pieces

thank you in advance

[fox]

Hi Kireita,

Try changing your Init() method as follows:

private void Init()
{
    // write here code to be called on component initialization
    bf = new BodyFracture(mesh);
    bf.Threshold = 0.01f;
    bf.SetMaterial(shatteredMaterial.Name);
    bf.CreateShatterPieces(2);
    bf.Broken = true;

}

Should work, but please note that with C# components it works on clicking the Run button to run the separate instance of the application.

Thanks!

[Kireita]

@fox

Hey i see now what the problem was, i needed to apply the material BEFORE shattering it, instead of after it, thank you!, i did not know the order of the functions actually affected its behavior, thanks!

and i understand now that i need to simulate physics in a separate instance because im using c#.

thank you!

Edited July 27, 2020 by Kireita

[TRaffic]

Просьба большая, а можно эти разрушения сделать типа базовых, что бы автоматически при выборе пункта разрушения появлялись, а кому надо тот кодом напишет?

Всё вроде так же сделал, но ошибка вылазит, не получается внутренний материал.

И что бы сразу не разрушалось, это через дельтатайм код делать?

Edited yesterday at 06:55 AM by TRaffic

[fox]

Здравствуйте, @TRaffic!

С тех пор API немного изменилось (актуальное описание и примеры можно посмотреть в статье про класс BodyFracture).

Вот простенький пример компонента с выбором типа разрушения и таймером:

 

using System.Collections;
using System.Collections.Generic;
using Unigine;

[Component(PropertyGuid = "AUTOGEN_GUID")]//<-- Здесь должен быть guid Вашего компонента
public class Fracture : Component
{
    // declare fracture types
    private enum FractureType
    {
        Shatter,
        Slice,
        Crack
    }
	
    [ShowInEditor][ParameterSwitch(Items = "Shatter, Slice, Crack", Tooltip = "Fracture type to be used")]
    private FractureType fracture_type = 0;

    [ShowInEditor]
    [Parameter(Tooltip = "Broken face material")]
    private Material brokenMaterial = null;
	
    [ShowInEditor][Parameter(Tooltip = "Object's life time (in seconds)")]
    private float lifeTime = 1.0f;

    private BodyFracture bf = null;
    private float startTime = 0.0f;
    private void Init()
    {
        if (node.Type != Node.TYPE.OBJECT_MESH_DYNAMIC)
        {
            Log.Error("This component must be assigned to Dynamic Mesh objects only!\n This node's type is: {0}", node.TypeName);
            return;
        }

        bf = new BodyFracture(node as ObjectMeshDynamic);
        bf.Threshold = 0.01f;
        bf.Material = brokenMaterial;
        
        Unigine.Console.Prompt  = bf.Material.FilePath;
        // remember initialization time of an object
        startTime = Game.Time;	
    }

    private void Update()
    {
        // wait until the lifetime ends and break the object
        if (bf && !bf.Broken && Game.Time - startTime > lifeTime)
        {
            // switch fracture type
            switch (fracture_type){
                case FractureType.Shatter: bf.CreateShatterPieces(3); break;
                case FractureType.Slice: bf.CreateSlicePieces(bf.Transform * vec3.ZERO, vec3.ONE); break;
                case FractureType.Crack: bf.CreateCrackPieces(bf.Transform * vec3.ZERO, vec3.ONE, 7, 3, 0.1f); break;
            }
            
            bf.Broken = true;
            Log.Message("The object is broken!");
        }
    }
}

Компонент можно назначить на Dynamic Mesh (ObjectMeshDynamic), настроить нужные параметры и проверить, как работает разрушение.

Надеюсь, это будет полезным.

[TRaffic]

Спасибо!!! Да круть!!! вообще, надо в базовую версию вам добавить такую функцию, столько времени мне сэкономили.

Edited 2 hours ago by TRaffic