public static async Task <TaskRequest> GetTexture(string url, ITextureResultListener listener)
{
var filePath = path + "/" + url.GetHashCode();
if (pendingRequests.ContainsKey(filePath)) //Return pending task if any in progress
{
var rq = pendingRequests[filePath];
rq.AddListener(listener);
await rq.Task;
return(rq);
}
var request = new TaskRequest(GetTextureTask(url, filePath), listener);
if (pendingRequests.ContainsKey(filePath))
{
return(null);
}
pendingRequests.Add(filePath, request);
await request.Task;
pendingRequests.Remove(filePath);
return(request);
}
public void AddListener(ITextureResultListener listener)
{
Listeners.Add(listener.Id);
}
public void RemoveListener(ITextureResultListener textureDownloader)
{
Listeners.Remove(textureDownloader.Id);
}
public TaskRequest(Task <GetTextureResult> task, ITextureResultListener listener)
{
Task = task;
AddListener(listener);
}
