Touch-move in 3D for Godot 3.0

SimpleMove.gd

extends Spatial

signal tapped(card)
signal released(card)

var is_tapped = false setget set_is_tapped
var should_process_touch = true

func set_is_tapped(value):
    is_tapped = value
    if value:
        emit_signal("tapped", self)
    else:
        emit_signal("released", self)

func _physics_process(delta):
    if Input.is_action_pressed("ui_tapped") and should_process_touch:
        var mouse_pos = get_viewport().get_mouse_position()
        var camera = get_viewport().get_camera()
        var ray_from = camera.project_ray_origin(mouse_pos)
        var ray_to = ray_from + camera.project_ray_normal(mouse_pos) * 100
        var space_state = get_world().direct_space_state
        var selection = space_state.intersect_ray(ray_from, ray_to, [], 0x7FFFFFFF, true, true)
        if selection and self.name == selection.collider.get_parent().get_name():
            self.is_tapped = true
            var to_mouse_pos = to_local(selection.position)
            translate(Vector3(to_mouse_pos.x, to_mouse_pos.y, 0.0))

    if Input.is_action_just_released("ui_tapped") and is_tapped:
        self.is_tapped = false