Count a Group

Part of the Signals and Collisions section of Coddy's Godot journey. Lesson 14 of 27.

A list knows its length. .size() on a group's list counts its nodes:

var count = get_tree().get_nodes_in_group("coins").size()
print("There are ", count, " coins")

A game uses this to know how many coins are left or how many enemies are alive.

Count the group. Never type the number yourself. If you add a coin to the level, the count still matches. The five coins here are in the group coins, set in the scene.

Challenge

Easy

Print how many coins there are to find.

In _ready(), give print("Coins to find: ") a second value after a comma.
Make it the number of nodes in the group coins, with .size().

Press Play: the Console shows Coins to find: 5. Then Check.

Try it yourself

extends Node2D

func _ready():
	print("Coins to find: ")

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Signals and Collisions

Practice on your own: Godot playground