v1 godot movement

# v1 good,
# written for godot movement
# it works well and is simple
extends Node2D

# Declare member variables here.
var velocity := Vector2.ZERO
var direction := Vector2.ZERO
var max_speed: float = 200

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):

    direction = get_direction()

    if direction:
        velocity = accelerate(0.1)
    else:
        velocity = decelerate(0.07)

    position += velocity * delta


func decelerate(drag: float) -> Vector2:
    return lerp(velocity, Vector2.ZERO, drag)

func accelerate(drag: float) -> Vector2:
    var target_velocity: Vector2 = direction * max_speed
    return lerp(velocity, target_velocity, drag)

func get_direction() -> Vector2:
    var direction: Vector2 = Vector2.ZERO
    direction.y = Input.get_axis("move_up", "move_down")
    direction.x = Input.get_axis("move_left", "move_right")
    return direction.normalized()