Introduction: Godot's scene system, while powerful and flexible, has a drawback: there is no method for storing information (e.g. a player's score or inventory) that is needed by more than one scen...| Godot Engine documentation
A built-in type representing a method or a standalone function. Description: Callable is a built-in Variant type that represents a function. It can either be a method within an Object instance, or ...| Godot Engine documentation