Spin With Rotation

Part of the Nodes and Scenes section of Coddy's Godot journey. Lesson 11 of 28.

A node turns around its own position. rotation is how far it has turned, in radians. A whole turn is 2 * PI radians, about 6.28. rotation_degrees is the same angle in degrees, where a whole turn is 360. Change one and the other follows.

rotation_degrees = 90   # a quarter turn
rotation = PI / 2      # the same quarter turn

A growing angle turns a node clockwise. To spin, add to the angle on every frame, times delta:

func _process(delta):
	rotation_degrees += 90 * delta

That spins a quarter turn each second. -= spins the other way.

Challenge

Easy

Make the robot spin where it stands.

In _process(), add to rotation_degrees so it turns clockwise.
Make it half a turn, 180 degrees, every second, with delta.

Press Play: the robot spins on the spot, a whole turn every two seconds. Then Check.

Try it yourself

extends Node2D

func _process(delta):
	pass

All lessons in Nodes and Scenes

1Your First Godot Game

What Is Godot?Ready Runs Once Print in Godot The Scene Tree Set a Position Move a Node Once

4Finding Nodes

The Dollar Sign Node Paths Onready Change a Color Hide and Show

2Every Frame

Process Runs Every Frame Delta Pixels per Second Move DiagonallySpin With RotationGrow With Scale

5Project: Screensaver

Screensaver: Drift Screensaver: Side Walls

Screensaver: Top and Bottom

Screensaver: Color List

Screensaver: New Colors

3Values You Can Tune

Variables on a Node Constants Export Variables Vector2 Math Wrap Around the Screen Your Own Functions

Practice on your own: Godot playground