Call Scenes

UnknownUser

Is it possible to call a function from one script in another if they are in different scenes. How? Thanks for your attention.

TwistedTwigleg

If both scenes are instanced in the same scene, you just need to get a reference to it like any other node using get_node or $. To go up a node in the scene tree, I believe you need to use ../ or get_parent. Then you can just call the function directly once you have a reference to it: get_parent().get_node("other_node").function_here()

If the scenes are separate and you are wanting to pass data from one to the other, I would suggest using an autoload script for this. That way, you can place the data into the autoload script, and have the other scene read the data from the autoload script once it has been loaded.

Megalomaniak

As @TwistedTwigleg alluded to, during runtime there is actually only one scene. The scene-graph/tree of the running application itself. What you create in the editor is simply what gets at some point loaded into or later unloaded from the scene-tree. In that sense those scenes are better thought of as preset asset bundles/packs.

As for autoloaded scripts and assets, those are(upon launch of your game) loaded directly under the root of the scene-graph and are always there and thus always accessible. But also always taking up their respective memory.

UnknownUser

@TwistedTwigleg said: If both scenes are instanced in the same scene, you just need to get a reference to it like any other node using get_node or $. To go up a node in the scene tree, I believe you need to use ../ or get_parent. Then you can just call the function directly once you have a reference to it: get_parent().get_node("other_node").function_here()

If the scenes are separate and you are wanting to pass data from one to the other, I would suggest using an autoload script for this. That way, you can place the data into the autoload script, and have the other scene read the data from the autoload script once it has been loaded.

I do not know how to do this until now. Your variant causes the error.(

TwistedTwigleg

I’m confused, what is causing the error? The ../ syntax in get_node?

UnknownUser

Oh! Mb! I made a mistake again in these node paths. Thx!

UnknownUser

Hi again, I didn't want to create a new topic for the sake of 1 question, so I'll ask here. How to calculate the arithmetic mean of two swipe speeds(1 swipe is required from the right and 2 from the left). Thanks for your attention.

UnknownUser

Another question: how can this be implemented and does it exist: $Tween.translate_variable (var_start, var_final, duration, method1, method2); If not, how to make a smooth subtraction?

UnknownUser

Help, please..

Megalomaniak

https://docs.godotengine.org/en/stable/classes/class_tween.html https://docs.godotengine.org/en/stable/classes/class_tween.html#class-tween-method-interpolate-property

https://www.reddit.com/r/godot/comments/dgh9vd/transitiontype_cheat_sheet_tween_interpolation_oc/ or see https://easings.net/en for animated examples of interpolation curve types.

UnknownUser

Um, thanks, of course, but I don't need a property, I need a variable:

var m = 0
$ Tween.translate_variable (m, 5, duration, CUBIC, OUT)

cybereality

Well the easiest thing would just to create a dummy Node that has the properties you want to tween (could be one, or you can add them all there if you need more) and then use interpolate_property.

Megalomaniak

An "exported" variable would be exposed as a property though, no?

edit: I think you need to explain what variable you think you want to tween, because I suspect you want to just use a variable as an input and actually you need to tween a property. Note that in your given example var m is an input to the tween, not what is being driven by the tween.

cybereality

Actually, you can tween variables. I just did it.

First, declare your variable at the top of the script (so it is global for that file):

var m = 0

Create a Tween node as a child of that object (in the editor) and save a reference to it at the top.

onready var tween = get_node("Tween")

Then where you want to start the transition, do this.

tween.interpolate_property(self, "m", 0, 100, 5, Tween.TRANS_CUBIC, Tween.EASE_IN_OUT)
tween.start()

This will tween the variable m starting from 0 to 100 over 5 seconds.

You can add a print in process so you can see it is working.

print("m = ",  m)

Hope that helps.

UnknownUser

WTF, it really was easy, where does my logic fly?! Thank you all very much, you saved me, especially the last person. <3

cybereality

Great, so glad I could help. I'm still figuring things out myself so it's a learning process for everyone.