SpriteKit: Callback after all nodes finished actions <p>Simplified problem (in Swift but I think also in Objective-C): I've got two nodes where actions have started. The information about the initial runtime of the action is not available (got lost). I'd like to be informed <em>after both actions</em> have been performed.</p> <p>After performing additional actions will be assigned according to the current state (which is not available in advance).</p> <p>Any simple solution known?</p>