godot-docs/classes/class_scenetreetimer.rst

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.. _class_SceneTreeTimer:

SceneTreeTimer
==============

**Inherits:** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`

One-shot timer.

Description
-----------

A one-shot timer managed by the scene tree, which emits :ref:`timeout<class_SceneTreeTimer_signal_timeout>` on completion. See also :ref:`SceneTree.create_timer<class_SceneTree_method_create_timer>`.

As opposed to :ref:`Timer<class_Timer>`, it does not require the instantiation of a node. Commonly used to create a one-shot delay timer as in the following example:


.. tabs::

 .. code-tab:: gdscript

    func some_function():
        print("Timer started.")
        await get_tree().create_timer(1.0).timeout
        print("Timer ended.")

 .. code-tab:: csharp

    public async void SomeFunction()
    {
        GD.Print("Timer started.");
        await ToSignal(GetTree().CreateTimer(1.0f), "timeout");
        GD.Print("Timer ended.");
    }



The timer will be dereferenced after its time elapses. To preserve the timer, you can keep a reference to it. See :ref:`RefCounted<class_RefCounted>`.

Properties
----------

+---------------------------+-----------------------------------------------------------+
| :ref:`float<class_float>` | :ref:`time_left<class_SceneTreeTimer_property_time_left>` |
+---------------------------+-----------------------------------------------------------+

Signals
-------

.. _class_SceneTreeTimer_signal_timeout:

- **timeout** **(** **)**

Emitted when the timer reaches 0.

Property Descriptions
---------------------

.. _class_SceneTreeTimer_property_time_left:

- :ref:`float<class_float>` **time_left**

+----------+----------------------+
| *Setter* | set_time_left(value) |
+----------+----------------------+
| *Getter* | get_time_left()      |
+----------+----------------------+

The time remaining (in seconds).

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`