Godot 3 debouncer, tested on 3.5.1

README.md

Yes, I know... who needs a debouncer in Godot, right? 😂

¯\_(ツ)_/¯

Other ideas: the debouncer call can also accept arguments, and call with the last-received args, or even accumulate all args, and call your_func with that.

Debounce.gd

class Debounce:
	
	var _tree: SceneTree
	var _timer: SceneTreeTimer
	var _wait: float
	var _fn: FuncRef
	
	func _init(tree: SceneTree, fn: FuncRef, wait: float = 0.15):
		_tree = tree
		_fn = fn
		_wait = wait
	
	func _refresh_timer():
		if _timer and _timer.is_connected("timeout", self, "_on_timeout"):
			_timer.disconnect("timeout", self, "_on_timeout")
			
		_timer = _tree.create_timer(_wait)
		# warning-ignore:RETURN_VALUE_DISCARDED
		_timer.connect("timeout", self, "_on_timeout")
		
	func call():
		_refresh_timer()
	
	func _on_timeout():
		_fn.call_func()

usage_example.gd

onready var debouncer: Debounce = Debounce.new(get_tree(), funcref(self, "your_func"))

# elsewhere in code
func im_called_in_bursts():
    debouncer.call()

func your_func():
    print("just had a burst")