/// <summary>
/// Removes a Controller from the Emitter.
/// </summary>
/// <param name="controller">Controller to be removed.</param>
/// <returns>True if the Controller was successfully removed, else false.</returns>
public bool RemoveController(Controller controller)
{
if (!_controllers.Contains(controller)) { return false; }
_controllers.Remove(controller);
controller.UnSubscribe(this);
return true;
}
/// <summary>
/// Applies a Controller to the Emitter.
/// </summary>
/// <param name="controller">Controller to apply.</param>
/// <returns>True if the Controller was successfully applied, else false.</returns>
/// <remarks>The engine is smart enough to prevent the same Controller being applied
/// multiple times.</remarks>
public bool ApplyController(Controller controller)
{
if (_controllers.Contains(controller)) { return false; }
_controllers.Add(controller);
controller.Subscribe(this);
return true;
}