Eliminate bouncing when switching/sticking to a different surface

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:bust_in_silhouette: Asked By Abanoub

I am following this tutorial to make a KinematicBody2D align to the surfaces below it.

When switching from one surface to another, the character bounces until it corrects/aligns its rotation, as shown here:

animation showing character bouncing

How can I eliminate the bouncing?

I’ve uploaded a minimal version of the project on GitHub.

The project setup looks like this:
Godot editor screenshot

And this is the player script:

extends KinematicBody2D

export (int) var speed = 600
export (int) var jump_speed = -600
export (int) var gravity = 1000

var velocity := Vector2.ZERO

export (float, 0, 1.0) var friction = 0.1
export (float, 0, 1.0) var acceleration = 0.25

var last_collission = null;

func get_input():
	var dir = 0
	if Input.is_action_pressed("ui_right"):
		dir = 1 
		$RightRay.enabled = true
		$LeftRay.enabled = false
	if Input.is_action_pressed("ui_left"):
		dir = -1 
		$RightRay.enabled = false
		$LeftRay.enabled = true
	if dir != 0:
		velocity.x = lerp(velocity.x, dir * speed, acceleration)
	else:
		if !is_jumping:
			$RightRay.enabled = false
			$LeftRay.enabled = false
		velocity.x = lerp(velocity.x, 0, friction)

var is_jumping = false
func _physics_process(delta):
	get_input()
	velocity.y += gravity * delta
	var snap = transform.y * 128 if !is_jumping else Vector2.ZERO
	velocity = move_and_slide_with_snap(velocity.rotated(rotation),
					snap, -transform.y, true, 4, PI/3)
#	velocity = velocity.linear_interpolate(velocity.rotated(-rotation), 0.8)
	velocity = velocity.rotated(-rotation)

	if is_on_floor():
#		velocity.x += speed * delta
		if !is_jumping :
			rotation = get_floor_normal().angle()  + PI/2
		
		is_jumping = false

		if Input.is_action_just_pressed("ui_accept"):
			is_jumping = true
			velocity.y = jump_speed
			$RightRay.enabled = true
			$LeftRay.enabled = true
	
	if  $RightRay.is_colliding():	
		rotation =  $RightRay.get_collision_normal().angle() + PI/2
		$RightRay.enabled = false
		$LeftRay.enabled = false
		
	if  $LeftRay.is_colliding():		
		rotation =  $LeftRay.get_collision_normal().angle() + PI/2
		$RightRay.enabled = false
		$LeftRay.enabled = false

just experiment with numerical values of this line :

var snap = transform.y * 128 if !is_jumping else Vector2.ZERO
velocity = move_and_slide_with_snap(velocity.rotated(rotation),
                    snap, -transform.y, true, 4, PI/3)

Inces | 2022-07-31 07:28