Introduction

ValidRLink is a Godot plugin that supports 4.1+ version

If it detects any changes in inspector it will call your own method where you can check exported values or set them, you can change the method name in settings.

You can also export buttons that will call your methods, similar to @export_tool_button only your classes doesn't need to be @tool

By the nature of how it works, it will only work with exported data, while inside your methods the instance doesn't have any children or parents and it's not in the tree. To work with the scene your method can accept helper class RLink, which provides common operations on the tree

Main Goals

Validation of Changes

User can add a function that will be called when exported value in inspector changes, even in a non-tool class

example.gd

@export var int_var: int

func validate_changes() -> void:
    if int_var < 0: int_var = 0
    elif int_var > 100: int_var = 100

Example.cs

[Export] public int IntVar { get; set; }

public void ValidateChanges()
{
    if (IntVar < 0) { IntVar = 0; }
    else if (IntVar > 100) { IntVar = 100; }
}

This function will be called when inspector updates exported variable. The names can be changed in Plugin settings and local settings

Runnable Buttons

As close as possible to @export_tool_button button, with the main difference being that they could be called from non-tool class using ValidRLink underlying system

Optional C# support

As plugin, at first, tried to replicate Unity's OnValidate, C# support was very important. Despite making it as seamless as possible, the support is fully optional and this plugin will work even in non-mono version