One-shot timer.
A one-shot timer managed by the scene tree, which emits [signal timeout] on completion. See also [method SceneTree.create_timer].
As opposed to [Timer], it does not require the instantiation of a node. Commonly used to create a one-shot delay timer as in the following example:
[codeblock]
func some_function():
print("start")
yield(get_tree().create_timer(1.0), "timeout")
print("end")
[/codeblock]
The time remaining.
Emitted when the timer reaches 0.