/// <summary>
/// Unloads every loaded resources in the given resource group. The unloading will be performed as a background task.
/// </summary>
/// <param name="group">The name of the resource group to unload.</param>
/// <returns>
/// Calling this method will return immediately with an interface to the background task. This interface can be used
/// to subscribe the events of the task. The resource group unloader task doesn't send messages during it's execution.
/// </returns>
/// <remarks>
/// This method throws an InvalidOperationException if there is another resource group loader or unloader task in progress.
/// </remarks>
public static IUIBackgroundTask UnloadResourceGroupAsync(string group)
{
if (string.IsNullOrEmpty(group))
{
throw new ArgumentNullException("group");
}
if (!resourceGroups.ContainsKey(group))
{
throw new UIException(string.Format("Resource group '{0}' doesn't exist!", group));
}
string[] resourcesToUnload = new string[resourceGroups[group].Count];
IUIBackgroundTask unloaderTask = UITaskManager.StartParallelTask(UnloadResourceGroupAsync_i, "ResourceUnloadingTask", resourcesToUnload);
return(unloaderTask);
}
/// <summary>
/// After the render loop has been started, this function is automatically called at the beginning of every
/// frame for updating the UIObjects.
/// </summary>
protected void Update()
{
if (this.intermediateTime0 <= this.intermediateTime1)
{
this.intermediateTime0 = (int)this.renderLoopTimer.ElapsedMilliseconds;
}
else
{
this.intermediateTime1 = (int)this.renderLoopTimer.ElapsedMilliseconds;
}
if (this.FrameUpdate != null)
{
this.FrameUpdate();
}
UITaskManager.OnUpdate();
}