"The Learning experience of node class GetParent and Getchildbytag () in COCOS2DX"

References http://cn.cocos2d-x.org/doc/cocos2d-x-3.0/d3/d82/classcocos2d_1_1_node.html

The member functions associated with child and parent are as follows:

Children and Parent
virtual void?	AddChild? (Node?*child)
	Joins a child node into the container. Z-order is 0.? Many other ...
virtual void?	AddChild? (node?*child, int localzorder)
	Add a child node to the container, and the number of references has a local z-axis order. Many other ...
virtual void?	AddChild? (node?*child, int localzorder, int tag)
	Joins a child node into the container, with a z-axis order and a marker. ? A lot of other ...
Virtual? Node?*?	Getchildbytag? (int tag)
	Gets a child node from the container through its markup.? Many other ...
Virtual? vector<? node?* > &?	GetChildren? ()
	Returns an array of child nodes.
Virtual const? vector<? node?* > &?	GetChildren? () const
Virtual?ssize_t?	Getchildrencount? () const
	Returns the total number of child nodes? A lot of other ...
virtual void?	SetParent? (node?*parent)
	Set parent node sets the parent, node? Many other ...
Virtual? Node?*?	GetParent? ()
	Returns a pointer to the parent node. Many other ...
Virtual const? Node?*?	GetParent? () const
virtual void?	Removefromparent? ()
	Removes a node from a parent node. There is a cleanup number of references. Assuming that the node is an isolated node, nothing happens. Many other ...
virtual void?	Removefromparentandcleanup? (Bool?cleanup)
	Delete a node from the parent node it is assumed that this node is a lone node. Then nothing is going to happen. ? A lot of other ...
virtual void?	RemoveChild? (Node?*child, Bool?cleanup=true)
	Deleting a child from a container depends on the action of the cleanup to clear all activities at the same time. Many other ...
virtual void?	Removechildbytag? (int tag, bool?cleanup=true)
	Removes a child from a container by marking the value. Depending on the cleanup, the action of all activities will be cleared at the same time. Many other ...
virtual void?	Removeallchildren? ()
	Remove all children from the container with a cleanup.? Many other ...
virtual void?	Removeallchildrenwithcleanup? (Bool?cleanup)
	Removing all children from the container, depending on the cleanup, will clear all active actions at the same time. Many other ...
virtual void?	Reorderchild? (node?*child, int localzorder)
	Once again for a child, set the value of a new z-axis. Many other ...
virtual void?	Sortallchildren? ()
	Before painting, arrange the entire array of children once, rather than sorting each time you join or delete a child node. This method can improve the performance greatly. Many other ...

In detail how to use I also in the study. But it is more practical to pass this. You can call the node, a node tree in the game at random a bit node object can be obtained through this method, convenient game development.

Give me a sample.

For example, a parkour game scene has three layers (animations, backgrounds, fractions) in which the animation layer state changes. There is a logical need for a fractional layer to make a corresponding change. The child and Parent methods enable very high-speed positioning to the score layer.

"The Learning experience of node class GetParent and Getchildbytag () in COCOS2DX"