How to save "meta" information in a scene
How to save "meta" information in a scene
I am coming from a Unity background and there I just had a component of some custom class in the scene which I could then easily get by calling FindInScene<CustomComponent> or something like that. Not in Godot this doesn't work, because I didn't find a way to get the actual class of an attached script. I always just get GDScript as the class name even though I did specify a custom one.
The information I want to save are things like: where to spawn players, how many laps will this race have, maybe save references to the spawned players, etc.
So how would I save this "meta" information to get by another script in Godot?
EDIT: here is an example: I have a main scene which can load different levels. When loading a level I need to get some information about that level, like: the available spawn points. Inside each level I have a node with a script attached to it that defined class_name LevelMeta and holds the meta information that I need when loading the level. How do I detect this script and the associated meta information?
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Im not really sure i understand. A scene is just a node with some children, if you want to store and read information from it then you just attach a script to the root node and declare some variables in it no?
If you add some custom node or instance to it, then you just get_node that by its path and access its variables.
Yes exactly. but how do I detect a specific script in my scene view? Or in other words: how do I find the source of my meta information in a scene?
Oh you want to know the name of the script that was previously attached to a node?
get_script().get_path() should return the filepath to the script that you used, not sure if thats what you want tho.
not the name, the
class_nameI set inside of the scriptI added an example in the thread
I see, looks like that is actually an issue.
https://github.com/godotengine/godot/issues/21789
Seems like you have to overwrite the get_class function if you want to detect custom classes.
extends Node2D class_name CustomClass func get_class(): return "CustomClass" func is_class(name): return name == "CustomClass" or .is_class(name) func _ready(): print(get_class()) print(is_class("CustomClass")) print(is_class("Node2D"))But is my solution actually a good one?
Defining a unique class name gets you the same thing as giving each script a unique filename and then differentiating between the get_script().get_path() but i can see how its not as clean for comparison.
Another solution would be to just give all your custom classes a var called "class_id" or something and then you can read that out if you need it.
Oh I meant the general solution for getting level / scene meta data 😅
Im assuming you have a predefined level scene, which you instantiate and add as a child to your main scene. If i were to save a bunch of metadata about that level scene, i would add a dictionary named "level_data" to the script of the root node of that levels scene.
extends Node var level_data = { "spawn_point": Vector2(x,y), ... }After you instantiate that level from your main scene with:
var level1_tscn = load("res://path/to/tscn") var level1 = level1_tscn.instantiate()You can then get or modify the metadata from that instance reference.
print(level1.level_data["spawn_point"])When you are done you can then add it as a child to the main scene with add_child(level1).
You can also do that right away and access the data later ofcourse, but if the values are needed in the _ready function of the level, then you need to modify them before adding it to the main scene.
That seems very nice. Thanks for the input :) I am very much new to Godot and I gotta say most Unity systems in my head still work, but some just let me run against a wall, like the one I described here XD
Added something to the previous comment.
Im also not super experienced, i just make unsuccessfull attempts at making games from time to time :) But i do love godot a lot.
Ah good find, I will read through that shortly, thanks :)