Mouse handling for godot emulating a controller axis

MouseAxis.gd

extends Node

var mouse_direction_sensitivity := 0.004
var mouse_direction_deadzone := 0.05

var mouse_direction_raw := Vector2()
var direction := Vector2()

func _input(event: InputEvent):
    if event is InputEventMouseMotion:
        mouse_direction_raw += event.relative * mouse_direction_sensitivity
        if mouse_direction_raw.length() > 1:
            mouse_direction_raw = mouse_direction_raw.normalized()

func _process(delta: float):
    if mouse_direction_raw.length() > mouse_direction_deadzone:
        direction = mouse_direction_raw
    else:
        direction *= 0.0