https://docs.godotengine.org/en/stable/tutorials/scripting/evaluating_expressions.html
Evaluating expressions — Godot Engine (stable) documentation in English
Godot provides an Expression class you can use to evaluate expressions. An expression can be: A mathematical expression such as(2 + 4) * 16/4.0., A boolean...
evaluating expressionsgodot enginestabledocumentationenglish