0 votes

Been trying for hours, can't figure it out. I'm making a golf game, and I'm instancing a Hole scene and a Ball scene to the Main scene. I want the Hole scene's Area2D node to send a signal when a physics body (the ball) enters it, and I want the main scene to listen to it.

On the Hole scene's script, I wrote

func _ready():
     $Area2D.connect("body_entered", self, "_on_Area2D_body_entered")
     if $Area2D.is_connected("body_entered", self, "_on_Area2D_body_entered") == true:

and my engine prints "hey". However, none of my tests on the Main Node script with func _on_Area2D_body_entered(): works. I feel like I'm not connecting the right parts in the right order or something. I know this is supposed to be obvious, but none of the references I've found online (including the docs) are specific enough for me to understand.

asked Nov 24, 2019 in Engine by simonmakesgoodgames (49 points)

1 Answer

+1 vote
Best answer

if you want to connect a signal to a different scene you need to change the second variable(where you placed self)...
The connect function works something like this:
connect( Signal to connect of the object itself, who owns the script for the function you want to use , the function's name, [ variables you want to send])

so lets say i want an area2d to activate a function is it's parent scene named "hello_body" i will write the following(in the area2d's script):

connect("area_entered",get_parent(), "hello_body")

and in the parent scene i will need a function that goes as follows:

func hello_body(body):
     # Some awesome code ^_^
answered Nov 24, 2019 by rustyStriker (1,079 points)
selected Nov 24, 2019 by simonmakesgoodgames

It worked! I was putting the func in the wrong script. Thanks a ton!

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