Get id of type by instance is impossible

[iRumba]

Godot version

4.1.1.stable

System information

Windows 10, GLES2, Intel(R) UHD Graphics 630

Issue description

I have class A

class A extends Object:
    pass

I have instance

var a = A.new()

I have some configuring for types

var dict: Dictionary = {
    A: 1,
    MyOtherClass: 2
}

So I can get config for A var conf = dict[A]
But I can't get config for instance var conf = dict[a]

I understand that 'a' and 'A' are diferent objects, but in C# I can do this

private Dictionary<Type, int> dict.....

Then I can fill dict by typeof(A), typeof(MyOtherClass) etc...

After it I can get conf by var conf = dict[a.GetType()]

I can't do it in GDScript

I don't want add in my classes func

class_name A

func get_my_type():
    return A

What can I do outside class script to get what I want (get A from a)?

Steps to reproduce

Nothing

Minimal reproduction project

Nothing

[iRumba]

I found one solution.

var a = A.new()
var script: GDScript = A
print (a.get_script() == script) #true

So, I can indexing my config by GDScript or script.get_instance_id()

[dalexeev]

See also:

• get_class() and is_class() not returning class_name #21789
• Add `GDScriptType` wrapper instead of `GDScriptNativeClass` godot-proposals#6502

Godot has a three-level type system:

1. Variant types, for example TYPE_INT. You can get this via typeof().
2. Native types (only for TYPE_OBJECT), for example Node. You can get this via get_class() and check it via is_class() (with inheritance).
3. Script types (only for TYPE_OBJECT, optional). You can get this via get_script().

There are also typed arrays (they have get_typed_*() methods for the three levels) and "ephemeral" types: enumerations and bit masks (at runtime they are just int).

In GDScript you can use the is operator (and is_instance_of() function for dynamic types) to check, it works with all 3 levels and typed arrays. But there is no uniform way to get the type of an value as some first-class value (a type representing a type).

I found one solution.

Will the issue be considered resolved?

[iRumba]

Godot has a three-level type system:

Variant types, for example TYPE_INT. You can get this via typeof().
Native types (only for TYPE_OBJECT), for example Node. You can get this via get_class() and check it via is_class() (with inheritance).
Script types (only for TYPE_OBJECT, optional). You can get this via get_script().
There are also typed arrays (they have get_typed_*() methods for the three levels) and "ephemeral" types: enumerations and bit masks (at runtime they are just int).

In GDScript you can use the is operator (and is_instance_of() function for dynamic types) to check, it works with all 3 levels and typed arrays. But there is no uniform way to get the type of an value as some first-class value (a type representing a type).

Yeah, I tryed different variants.

• get_class() returns String and not guaranted unique
• "instance_of" and "is" make using type dictionary not possible. I need enumerate my dict for finding my type. Also this methods return true with base class (a is B return true if B extends A)

Will the issue be considered resolved?

I dont know. May be someone find more clear method for my task.