Godot 360 Car Spinner

extends AnimatedSprite
var drag_enabled = false
var drag_value = 0
var mouse_pos = 0
var mouse_current = 0
var current_frame = 0

onready var number_frames = get_sprite_frames().get_frame_count("default");

func _process(delta):
    if drag_enabled:
        mouse_current = get_global_mouse_position();
        drag_value = mouse_pos.x - mouse_current.x;
        if drag_value > 0:
            current_frame += 1;
        if drag_value < 0:
            current_frame -= 1;

        if current_frame > number_frames:
            current_frame = 0;
        elif current_frame < 0:
            current_frame = number_frames;

        set_frame(current_frame);
        mouse_pos = get_global_mouse_position();

func _input(event):
    if event is InputEventMouseButton:
        if event.button_index == BUTTON_LEFT:
            if event.pressed:
                drag_enabled = true;
                mouse_pos = get_global_mouse_position();
            else:
                drag_enabled = false;