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Having trouble deleting an InstantiateAsync object

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#32 1 comentario 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
3/5
Tiempo estimado
1-2 días
Aptitud para principiantes
25/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Estancado
Stack tecnológico
csharp, unity
Área
game-dev

Línea de trabajo

Start by reproducing the issue in the Unity AR sample and trace OnImageUpdated and OnImageAdded. Inspect the Addressables.InstantiateAsync, Release, and ReleaseInstance calls around target and curobject, then verify that changing the detected image removes the previous instance before the new asset is created and parented.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

Hi,

I have an AR App where when an Image gets detected, it should Instantiate an AssetReference that image is associated with.

But I have another method where if a new Image is detected, I want to first delete the previously instantiated AssetReference, and then instantiate the AssetReference associated with the new Image.

Here is my code:

`
public class MultiTrackedImageManager : MonoBehaviour
{

public static MultiTrackedImageManager Instance { get { return instance; } }
private static MultiTrackedImageManager instance;

private ARTrackedImageManager m_TrackedImageManager;
private GameObject curobject;
private string PREFABFOLDER = "Prefabs/";

AssetBundle myLoadedAssetBundle;
[SerializeField]
private string imageName;
private GameObject prefabToLoad;

public List<MultiTrackedImage> Images = new List<MultiTrackedImage>();

// Addressables necessities for test
GameObject target;
private Vector3 spawnPosition;
GameObject testObj;

private void Awake()
{
    //if (instance != null) { Destroy(instance); }
    instance = this;
    m_TrackedImageManager = GetComponent<ARTrackedImageManager>();
    curobject = null;
    spawnPosition = Vector3.zero;
}
void OnEnable()
{
    m_TrackedImageManager.trackedImagesChanged += OnTrackedImagesChanged;
}

void OnDisable()
{
    m_TrackedImageManager.trackedImagesChanged -= OnTrackedImagesChanged;
}

void OnTrackedImagesChanged(ARTrackedImagesChangedEventArgs eventArgs)
{

    foreach (var trackedImage in eventArgs.updated)
    {
        OnImageUpdated(trackedImage.referenceImage.texture.name, trackedImage.name, trackedImage);
    }

    foreach (var trackedImage in eventArgs.added)
    {
        OnImageAdded(trackedImage.referenceImage.texture.name, trackedImage.name, trackedImage);
    }
}

public void OnImageUpdated(string textureName, string name, ARTrackedImage m_ARTrackedImage)
{
    
    for (int i = 0; i < Images.Count; i++)
    {
        //if we have a match for the object and we have regained tracking and the current object is not the one for the trigger we just found
        if (m_ARTrackedImage.trackingState == TrackingState.Tracking)
        {

            //this checks to make sure we are tracking the right image target
            if(!string.Equals(Images[i].target.name, textureName)) { continue; }

            //this checks to see if our current object is equal to the name of the image target so we don't delete and duplicate
            if (string.Equals(curobject.name, Images[i].target.name)) { continue; }

            //for some reason we are getting updates from non visible targets
            if (curobject != null) { Destroy(curobject);}

            GameObject go = GameObject.Find(name);

            //Instantiate the prefab with the position of go
            var addresableTarget = Addressables.InstantiateAsync(Images[i]._prefabReference, go.transform.position, Quaternion.identity);

            if(target != null) {Addressables.Release(target); Addressables.ReleaseInstance(addresableTarget); }
            target = addresableTarget.Result;

            curobject = target;
            curobject.name = Images[i].target.name;

            TextManager.s.txtContent1 = Images[i].txt1 == "" ? "  " : Images[i].txt1;
            TextManager.s.txtContent2 = Images[i].txt2 == "" ? "  " : Images[i].txt2;
            TextManager.s.ResetText();

            Images[i].go = go;
            target.transform.rotation = go.transform.rotation;
            target.transform.SetParent(go.transform);
            target.transform.localPosition = Vector3.zero;
        }
    }
}

public void OnImageAdded(string textureName, string name, ARTrackedImage m_ARTrackedImage)
{

    //PrefabManager.s.ClearPrefabs();
    for (int i = 0; i < Images.Count; i++)
    {
        if (string.Equals(Images[i].target.name, textureName) && Images[i].go == null)
        {
            //Destroy the existing AR Animation
            if (curobject != null) { Destroy(curobject);}

            GameObject go = GameObject.Find(name);

            //Instantiate the prefab with the position of go
            var addresableTarget = Addressables.InstantiateAsync(Images[i]._prefabReference, 
go.transform.position, Quaternion.identity);

            if (target != null) { Addressables.Release(target); Addressables.ReleaseInstance(addresableTarget); }
            target = addresableTarget.Result;

            curobject = target;
            curobject.name = Images[i].target.name;

            TextManager.s.txtContent1 = Images[i].txt1 == "" ? "  " : Images[i].txt1;
            TextManager.s.txtContent2 = Images[i].txt2 == "" ? "  " : Images[i].txt2;
            TextManager.s.ResetText();

            Images[i].go = go;
            target.transform.rotation = go.transform.rotation;
            target.transform.SetParent(go.transform);
            target.transform.localPosition = Vector3.zero;
        }
    }
}

`

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