The connect method

Learn to connect a signal to a function with connect.

connect method and Callable

To connect a signal to a function, the connect method is used. In Godot 4, you access the signal directly with a dot and provide the target function as a Callable.

func _ready():
    var buton = $Button
    buton.pressed.connect(_on_button_pressed)

func _on_button_pressed():
    print("Butona tiklandi!")

Once this connection is established, whenever the signal triggers, the target function is called automatically.

Passing extra arguments with bind

Sometimes you want to pass extra data to the target function when the signal fires. For this, the bind method is used.

func _ready():
    $BtnA.pressed.connect(_on_secim.bind("A"))
    $BtnB.pressed.connect(_on_secim.bind("B"))

func _on_secim(ad: String):
    print("Secilen: ", ad)

bind appends extra arguments to the signal's parameters, making it easy to reuse the same handler across multiple nodes.

Exercise Show connect syntax

Define a _ready function and print the text "button.pressed.connect(_on_pressed)" using print to demonstrate the signal connection syntax.

Show example solution

extends Node

func _ready():
    print("button.pressed.connect(_on_pressed)")

Test yourself

Which is the correct line in Godot 4 to connect a button's pressed signal to the '_on_tiklandi' function in code?
- button.call_when_clicked(_on_tiklandi)
- button.listen("_on_tiklandi")
- button.attach_event(_on_tiklandi)
- button.pressed.connect(_on_tiklandi)
Show answer

button.pressed.connect(_on_tiklandi) — In Godot 4, the 'connect' method on signal objects takes the target function reference (Callable) as an argument.

Connecting a signal

func _ready():
    $Timer.timeout.____(_on_timer_timeout)

Show answer

func _ready():
    $Timer.timeout.connect(_on_timer_timeout)

Connection terms

connect

Connects signal to function
Callable

Callable function reference
bind

Appends fixed argument to function
disconnect

Detaches the signal connection

Next lesson: Custom signal

We Are Enhancing Your Experience

Cookie Preferences

Strictly Necessary Cookies

Analytical Cookies