What is a scene?
A scene is basically a collection of different elements such as sprites, sounds, and so on, in a logical way. Suppose we want to make a menu, we'll have to put some buttons, background, and sounds in a manner that is positioned according to our needs.
A Scene object is a collection of nodes, but a scene itself acts as a node. Imagine a tree of nodes having scene objects as its root. As all nodes in the scene are positioned in defined coordinates, their linkage can be shown as:
Node (Content) → Descendant Node
This linkage of a node with its descendant(s) is very useful. Say, if you rotate a node on the top of the tree, all the nodes will be subsequently rotated.
In technical terms, Scene is an SKScene object, which holds an SKNode object (such as SKSpriteNode objects for sprites) inside a view (SKView object), so that we can render and use them. Scene is itself an SKNode object, which acts as a root node and attaches in an SKView object. Other objects required for that scene...
