ModelProject/Assets/Scripts/AssetRequest.cs

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Object = UnityEngine.Object;

public class AssetRequest : Reference,IEnumerator
{
    private List<Object> _requires;
    public Type assetType;
    public LoadedCallback completed;
    public string name;
    AssetBundle assetbundle; 

    public AssetRequest()
    {
        asset = null;
        LoadState = AssetLoadState.Init;
    }

    public AssetLoadState LoadState { get; protected set; }

    protected void Complete()
    {
        if(completed != null)
        {
            completed(this);
            completed = null;
        }
    }

    public virtual bool isDone
    {
        get { return LoadState == AssetLoadState.Loaded || LoadState == AssetLoadState.Unload; }
    }

    public virtual float progress
    {
        get { return 1; }
    }

    public virtual string error { get; protected set; }
    public string text { get; protected set; }
    public byte[] bytes { get; protected set; }

    public Object asset { get; internal set; }
    private bool checkRequires
    {
        get { return _requires != null; }
    }
    private void UpdateRequires()
    {
        for (var i = 0; i < _requires.Count; i++)
        {
            var item = _requires[i];
            if (item != null)
                continue;
            Release();
            _requires.RemoveAt(i);
            i--;
        }

        if (_requires.Count == 0)
            _requires = null;
    }

    internal virtual void Load()
    {
#if UNITY_EDITOR
        LoadModule.loadDelegate = UnityEditor.AssetDatabase.LoadAssetAtPath;
        if (LoadModule.runtimeMode == false && LoadModule.loadDelegate != null)
        {
            asset = LoadModule.loadDelegate(name, assetType);

            
        }
#else
        string[] path = name.Split('/');
        string[] icon = path[path.Length-1].Split('.');
        string pa = icon[0];
        //assetbundle = LoadModule.GetAssetBundle(pa);
        //if(assetbundle == null)
        //{
        //    AssetBundle ab = AssetBundle.LoadFromFile(pa);//속潼渡齡竟AB관
           
        //    if (ab != null)
        //    {
        //        LoadModule.AddAssetBundle(pa, ab);
        //    }
        //    assetbundle = ab;
        //}

        asset = MaterialsManager.Instance.LoadView(pa);
        
        //asset = assetbundle.LoadAsset<GameObject>(icon[icon.Length-1]);//속潼渡齡竟
#endif



        if (asset == null)
        {
            error = "error! file not exist:" + name;
            Debug.LogError(error);
            return;
        }

        LoadState = AssetLoadState.Loaded;
        Complete();
    }
    
  


    internal virtual void Unload()
    {
        if (asset == null)
            return;

        if (!LoadModule.runtimeMode)
            if (!(asset is GameObject))
                Resources.UnloadAsset(asset);

        asset = null;
        LoadState = AssetLoadState.Unload;
    }

    internal virtual bool Update()
    {
        if (checkRequires)
            UpdateRequires();
        if (!isDone)
            return true;
        if (completed == null)
            return false;
        try
        {
            completed.Invoke(this);
        }
        catch (Exception ex)
        {
            Debug.LogException(ex);
        }

        completed = null;
        return false;
    }
    internal virtual void LoadImmediate() { }

#region IEnumerator implementation

    public bool MoveNext()
    {
        return !isDone;
    }

    public void Reset()
    {
       
    }

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    public object Current
    {
        get { return null; }
    }
#endregion
}