this post was submitted on 08 Jan 2024
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I want to use this unique value as a key for a dictionary, which will have some data in it (positions, rotations and some custom values)
Is there a reason you don't want to serialize that data with the nodes that use them? Are those values intended to change when the entity isn't loaded into a scene (like a background simulation or something)?
Seems like adding your own uuid or tapping into the ResourceUid class might be your best option
I don't really know what you mean by serializing the data. I am using a custom data type for saving all the relevant stuff, in case that is what you mean. That date type stores only the position and rotation and optionally some other stuff too.
Yep! That would be an example of serialization. In computer science, taking an applications representation of a data type/object and formatting it as a series of bytes for storage or transmission over a network is referred to as serialization, with deserialization being the opposite process.
In your case, I would definitely try out the ResourceUID class as it seems like it may fit your needs. You can use it to create and id and store that with the other fields in your custom data type. It returns an
intso it will be very easy to use as a key in a dict. Just be sure to call add_id after creating so ResourceUID won't generate duplicates: https://docs.godotengine.org/en/stable/classes/class_resourceuid.html#class-resourceuid-method-add-id