113 lines
3.3 KiB
C#
113 lines
3.3 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using JetBrains.Annotations;
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using UnityEngine;
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using Object = UnityEngine.Object;
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namespace OCES
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{
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public class ResourceLoader : MonoBehaviour
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{
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readonly Dictionary<string, Object> m_cachedObjects = new();
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readonly Dictionary<string, List<Action<Object>>> m_pendingCallbacks = new();
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IAssetProvider m_assetProvider;
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public void SetProvider(IAssetProvider assetProvider)
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{
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this.m_assetProvider = assetProvider;
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}
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[CanBeNull]
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internal T LoadSync<T>(string path) where T : Object
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{
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if (this.m_cachedObjects.TryGetValue(path, out Object cachedObject))
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{
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return cachedObject as T;
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}
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T newObject;
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if (this.m_assetProvider is not null)
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{
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newObject = this.m_assetProvider.Load<T>(path);
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}
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else
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{
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newObject = Resources.Load<T>(path);
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Debug.LogWarning($"[ResourceLoader] No IAssetProvider set, falling back to Resources.Load for '{path}'");
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}
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this.m_cachedObjects.Add(path, newObject);
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return newObject;
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}
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internal void LoadAsync<T>(string path, Action<T> onComplete) where T : Object
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{
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if (this.m_cachedObjects.TryGetValue(path, out Object cachedObject))
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{
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onComplete?.Invoke(cachedObject as T);
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return;
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}
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if (this.m_pendingCallbacks.TryGetValue(path, out List<Action<Object>> callbacks))
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{
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callbacks.Add(obj => onComplete?.Invoke(obj as T));
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return;
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}
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this.m_pendingCallbacks[path] = new List<Action<Object>> { obj => onComplete?.Invoke(obj as T) };
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if (this.m_assetProvider is not null)
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{
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this.m_assetProvider.LoadAsync<T>(path, this, asset =>
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{
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OnAsyncAssetLoaded(path, asset as Object);
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});
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}
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else
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{
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Debug.LogWarning($"[ResourceLoader] No IAssetProvider set, falling back to Resources.Load for '{path}'");
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StartCoroutine(FallbackLoadAsyncCoroutine<T>(path));
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}
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}
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IEnumerator FallbackLoadAsyncCoroutine<T>(string path) where T : Object
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{
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ResourceRequest request = Resources.LoadAsync<T>(path);
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yield return request;
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OnAsyncAssetLoaded(path, request.asset);
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}
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void OnAsyncAssetLoaded(string path, Object asset)
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{
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if (asset)
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{
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this.m_cachedObjects[path] = asset;
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}
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if (this.m_pendingCallbacks.Remove(path, out List<Action<Object>> callbacks))
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{
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foreach (Action<Object> callback in callbacks)
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{
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callback?.Invoke(asset);
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}
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}
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}
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internal void PreloadAsync<T>(string[] paths)
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{
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}
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internal void Release<T>(string path)
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{
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}
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internal void ReleaseUnused()
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{
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}
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}
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}
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