Aligning movement around a 2D circle

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1

Godot Version

Godot 4.3

Question

I was wondering how I could align a character to move around a 2D circle, sorta like mario galaxy but in 2D. There seem to be an outdated tutorial about it but I’m unable to turn it into my version of godot

2

What specifically is not working from the older tutorial?

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3

move_and_slide_with_snap() is no longer a thing.

4

If you look at this discussion, they talk about how to get around this issue:
https://godotforums.org/d/32724-what-replaces-move-and-slide-with-snap-in-godot-4

TLDR:

Increase floor snap lenght of the characterbody, while using move_and_slide()

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5

Thank you for your time. I messed around with it but couldn’t get it to work like the tutorial.

For future readers. I ended up using raycasts. One going down which is all you need but in my case I added another pointing up to re-orient the character if they were close to another surface while jumping.

extends CharacterBody2D
 
const SPEED: float = 350
const GRAVITY: float = 450
const JUMP: float = -400
var air_time = 0
var is_jumping = false
var raw_velocity: Vector2
 
@onready var floor_detector: RayCast2D = $FloorDetector as RayCast2D
@onready var up_detector: RayCast2D = $UpDetector as RayCast2D



func _physics_process(delta: float) -> void:
	raw_velocity.x = Input.get_axis("ui_left", "ui_right") * SPEED
	if Input.is_action_just_pressed("Jump"):
		is_jumping = true
	
	if is_on_floor() and !is_jumping:
		raw_velocity.y = 0.0
	elif is_jumping:
		air_time += delta
		up_direction = Vector2(0,-1)
		if air_time > 0.2:
			is_jumping = false
			air_time =0
		raw_velocity.y = JUMP
	else:
		raw_velocity.y = GRAVITY
 	
	if floor_detector.is_colliding():
		var normal = floor_detector.get_collision_normal()
		up_direction = normal
 
		var angle = Vector2.UP.angle_to(normal)
		rotation = angle
 
		velocity = raw_velocity.rotated(angle)
	elif up_detector.is_colliding():
		var normal = up_detector.get_collision_normal()
		up_direction = normal
		var angle = Vector2.UP.angle_to(normal)
		rotation = angle
	else:
		velocity = raw_velocity
 	
	
	move_and_slide()

This allows for moving all around an inner surface. Useful for platformers if you want to make, say, sticky boots upgrade or something? if someone managed to remake the tutorial i posted above, feel free to post it as well for future readers.