Periodic function

Question

Is there way to create function that would execute with specific period or should be everything that happens periodically happen in _process()?

Answer 1

Use a Timer node to have a function happen every x seconds:

extends Node2D

var my_timer : Timer

func _ready() -> void:
    var optional_parameter = 3
    my_timer = Timer.new()
    my_timer.autostart = true
    my_timer.wait_time = optional_parameter # however many seconds you want
    my_timer.connect("timeout", self, "my_function_to_call", [optional_parameter])
    self.add_child(my_timer)

func my_function_to_call(secs):
    prints("This is printed every", secs, "seconds.")