Polymorphism doesn't work on a typed arrays about godot HOT 2 CLOSED

This is a current limitation, please see:

• godotengine/godot-proposals#7364

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Duplicate of:

• #80586
• #83876
• #89959
• #93063

See:

• GDScript reference - Typed arrays
• godotengine/godot-proposals#7364

This is not a bug. Arrays are passed by reference; they do not copy the entire content. Otherwise you would get:

var a: Array[Node2D]
var b: Array[Node]
b = a # Now `b` refers to the same array as `a`.
b.append(Label.new()) # Valid, `Label` is a subtype of `Node`.
print(a[0]) # Invalid, `Label` is **not** a subtype of `Node2D`.

Probably the only way this would work is if the GDScript supported read/write qualifiers. But it's too difficult.

Thanks for the contribution nonetheless!

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