void InternalUnloadAllAssets(bool unloadUnusedAssets, Action completed)
{
Working = true;
foreach (var kvp in m_LoadedAssets)
{
kvp.Value.Release(true);
AssetRefer.Unspawn(kvp.Value);
}
foreach (var kvp in m_LoadedAssetBundles)
{
kvp.Value.Release(true);
AssetBundleRefer.Unspawn(kvp.Value);
}
m_LoadedAssets.Clear();
m_LoadedAssetBundles.Clear();
if (unloadUnusedAssets)
{
Resources.UnloadUnusedAssets();
}
if (completed != null)
{
completed.Invoke();
}
Working = false;
ActionSequence.Dequeue();
}
public static void Unspawn(AssetRefer assetRefer)
{
if (assetRefer.Target != null)
{
assetRefer.Count = 0;
assetRefer.Target = null;
}
Pool.Unspawn(assetRefer);
}
public static AssetRefer Spawn(Object asset)
{
if (asset == null)
{
throw new ArgumentException("asset == null.");
}
AssetRefer assetRefer = Pool.Spawn();
assetRefer.Count = 0;
assetRefer.Target = asset;
return(assetRefer);
}
/// <summary>
/// Stop all loading tasks, and release all references.(immediately)
/// </summary>
public AssetManagementTool Shutdown(bool unloadUnusedAssets = false)
{
ActionSequence.Clear();
if (Working)
{
if (m_WorkingCoroutine != null)
{
m_WorkingCoroutine.StopCoroutine();
}
Working = false;
}
m_WorkingCoroutine = null;
if (m_LoadingTasks != null)
{
m_LoadingTasks.UnspawnLoadingTasks();
m_LoadingTasks = null;
}
while (m_CachedLoadingTasks.Count > 0)
{
var list = m_CachedLoadingTasks.Dequeue();
if (list != null)
{
list.UnspawnLoadingTasks();
}
}
m_CachedLoadingCallbacks.Clear();
foreach (var kvp in m_LoadedAssets)
{
kvp.Value.Release(true);
AssetRefer.Unspawn(kvp.Value);
}
foreach (var kvp in m_LoadedAssetBundles)
{
kvp.Value.Release(true);
AssetBundleRefer.Unspawn(kvp.Value);
}
m_LoadedAssets.Clear();
m_LoadedAssetBundles.Clear();
if (unloadUnusedAssets)
{
Resources.UnloadUnusedAssets();
}
return(this);
}
public static void UnloadAssets(this List <string> assetPaths, Dictionary <string, AssetRefer> loadedAssets,
Dictionary <string, AssetBundleRefer> loadedAssetBundles, AssetBundleManifest manifest, bool unloadUnusedAssets = false,
Action completed = null)
{
var dirty = false;
for (int i = 0, len = assetPaths.Count; i < len; i++)
{
var assetPath = assetPaths[i];
AssetRefer assetRefer;
if (loadedAssets.TryGetValue(assetPath, out assetRefer))
{
if (assetRefer.Release() == 0)
{
// release assetBundle references.
loadedAssets.Remove(assetPath);
AssetRefer.Unspawn(assetRefer);
dirty = true;
}
else
{
// not need to release the assetBundle, because the reference count is bigger than zero.
}
}
var assetBundleNames = manifest.GetAllDependenciesByAssetPath(assetPath, true);
for (int j = 0, len2 = assetBundleNames.Count; j < len2; j++)
{
var assetBundleName = assetBundleNames[j];
AssetBundleRefer assetBundleRefer;
if (loadedAssetBundles.TryGetValue(assetBundleName, out assetBundleRefer))
{
if (assetBundleRefer.Release() == 0)
{
// release asset references.
loadedAssetBundles.Remove(assetBundleName);
AssetBundleRefer.Unspawn(assetBundleRefer);
dirty = true;
}
else
{
// not need to release the asset, because the reference count is bigger than zero.
}
}
}
}
if (dirty && unloadUnusedAssets)
{
Resources.UnloadUnusedAssets();
}
if (completed != null)
{
completed.Invoke();
}
}
public static IEnumerator LoadAssetsAsync <T>(this List <LoadingTask> loadingTasks, Dictionary <string, AssetRefer> loadedAssets,
Dictionary <string, AssetBundleRefer> loadedAssetBundles, Action <List <T> > completed, bool async = true) where T : Object
{
for (int i = 0, len = loadingTasks.Count; i < len; i++)
{
var task = loadingTasks[i];
switch (task.TaskType)
{
case LoadingTaskType.LoadingSceneFromAssetBundle:
case LoadingTaskType.LoadingScene: {
// load scene.
var scenceName = task.ScenceName;
if (async)
{
var asyncOperation = SceneManager.LoadSceneAsync(scenceName);
yield return(asyncOperation);
asyncOperation.allowSceneActivation = true;
}
else
{
SceneManager.LoadScene(scenceName);
}
}
break;
case LoadingTaskType.LoadingAssetFromResources: {
var assetPath = task.AssetPath;
if (loadedAssets.ContainsKey(assetPath))
{
// asset is loaded, do nothing.
}
else
{
var resourcesPath = task.ResourcesPath;
Object asset;
if (async)
{
var request = Resources.LoadAsync <T>(resourcesPath);
while (!request.isDone)
{
yield return(null);
}
asset = request.asset;
}
else
{
asset = Resources.Load <T>(resourcesPath);
}
if (asset == null)
{
Debug.LogWarning("load asset from resources failed, resources path = " + resourcesPath);
}
else
{
// load asset from resources ok.
loadedAssets.Add(assetPath, AssetRefer.Spawn(asset));
}
}
}
break;
case LoadingTaskType.LoadingAssetFromAssetBundle: {
var assetPath = task.AssetPath;
if (loadedAssets.ContainsKey(assetPath))
{
// asset is loaded, do nothing.
}
else
{
var assetBundleName = task.AssetBundleName;
AssetBundleRefer assetBundleRefer;
if (loadedAssetBundles.TryGetValue(assetBundleName, out assetBundleRefer))
{
Object asset;
if (async)
{
var request = assetBundleRefer.Target.LoadAssetAsync <T>(assetPath);
while (!request.isDone)
{
yield return(null);
}
asset = request.asset;
}
else
{
asset = assetBundleRefer.Target.LoadAsset <T>(assetPath);
}
if (asset == null)
{
Debug.LogWarning("load asset from assetbundle failed, asset path = " + assetPath);
}
else
{
// load asset from assetbundle ok.
loadedAssets.Add(assetPath, AssetRefer.Spawn(asset));
}
}
else
{
Debug.LogWarning("not found loaded assetbundle, assetbundle name = " + assetBundleName);
}
}
}
break;
case LoadingTaskType.LoadingAssetBundle: {
var assetBundleName = task.AssetBundleName;
if (loadedAssetBundles.ContainsKey(assetBundleName))
{
// assetbundle is loaded, do nothing.
}
else
{
// caculate assetbundle file path
var persistentDataPath = assetBundleName.GetAssetBundlePath();
if (File.Exists(persistentDataPath))
{
AssetBundle assetBundle;
if (async)
{
var request = AssetBundle.LoadFromFileAsync(persistentDataPath);
while (!request.isDone)
{
yield return(null);
}
assetBundle = request.assetBundle;
}
else
{
assetBundle = AssetBundle.LoadFromFile(persistentDataPath);
}
if (assetBundle == null)
{
Debug.LogWarning("load assetbundle from file faile, file path = " + persistentDataPath);
}
else
{
// load assetbundle from file ok.
loadedAssetBundles.Add(assetBundleName, AssetBundleRefer.Spawn(assetBundle));
}
}
else
{
if (async)
{
var streamingAssetsPath = assetBundleName.GetAssetBundlePath(false);
#if UNITY_2018_4_OR_NEWER
UnityWebRequest unityWebRequest = UnityWebRequestAssetBundle.GetAssetBundle(streamingAssetsPath);
yield return(unityWebRequest.SendWebRequest());
var error = unityWebRequest.error;
if (string.IsNullOrEmpty(error))
{
var download = unityWebRequest.downloadHandler as DownloadHandlerAssetBundle;
if (download != null)
{
var assetBundle = download.assetBundle;
if (assetBundle == null)
{
Debug.LogWarning("load assetbundle from streamingAssetPath failed, url = " + streamingAssetsPath);
}
else
{
loadedAssetBundles.Add(assetBundleName, AssetBundleRefer.Spawn(assetBundle));
}
}
else
{
Debug.LogWarning("download assetbundle from streamingAssetPath failed, url = " + streamingAssetsPath);
}
}
else
{
Debug.LogWarning("load assetbundle failed, UnityWebRequest.error = " + error + ", url = " + streamingAssetsPath);
}
#else
using (var www = new WWW(streamingAssetsPath)) {
while (!www.isDone)
{
yield return(null);
}
var error = www.error;
if (string.IsNullOrEmpty(error))
{
var assetBundle = www.assetBundle;
if (assetBundle == null)
{
Debug.LogWarning("load assetbundle from streamingAssetPath failed, url = " + streamingAssetsPath);
}
else
{
loadedAssetBundles.Add(assetBundleName, AssetBundleRefer.Spawn(assetBundle));
}
}
else
{
Debug.LogWarning("load assetbundle failed, WWW.error = " + error + ", url = " + streamingAssetsPath);
}
}
#endif
}
else
{
Debug.LogWarning("not found assetbundle file, file path = " + persistentDataPath);
}
}
}
}
break;
} // end switch
} // end for
List <T> result = new List <T>();
for (int i = 0, len = loadingTasks.Count; i < len; i++)
{
var task = loadingTasks[i];
switch (task.TaskType)
{
case LoadingTaskType.LoadingAssetFromResources:
case LoadingTaskType.LoadingAssetFromAssetBundle: {
AssetRefer assetRefer;
if (loadedAssets.TryGetValue(task.AssetPath, out assetRefer))
{
assetRefer.Retain();
result.Add(assetRefer.GetAsset <T>());
}
else
{
result.Add(null);
}
}
break;
case LoadingTaskType.LoadingScene:
case LoadingTaskType.LoadingSceneFromAssetBundle: {
result.Add(null);
}
break;
case LoadingTaskType.LoadingAssetBundle: {
AssetBundleRefer assetBundleRefer;
if (loadedAssetBundles.TryGetValue(task.AssetBundleName, out assetBundleRefer))
{
assetBundleRefer.Retain();
}
else
{
// loading assetbundle, but seems failed.
}
}
break;
} // end switch
} // end for
loadingTasks.UnspawnLoadingTasks();
if (completed != null)
{
completed.Invoke(result);
}
}
