Error: godot script does not inherit from node

What's Causing This Error

The error "godot script does not inherit from node" usually occurs in the Godot engine when you try to attach a script to a Node that is expected to extend a specific class but does not. This can happen for a few reasons:

1. Incorrect Inheritance: Your script may explicitly inherit from a class that isn't related to Node or its subclasses, which is mandatory for scripts that are attached to scene tree nodes.
2. Typo in the Class Name: A simple typo in the class name that your script is attempting to inherit from can cause this error.
3. Missing or Incorrect class_name Keyword: If your script uses the class_name keyword for creating a native script class but it’s either missing or incorrect, it could result in this error if Godot doesn't recognize the script as a valid node type.
4. Corrupted Script File: The script file may be corrupted or wasn't saved properly, which might lead Godot to misinterpret the inheritance chain.

Solution - Here's How To Resolve It

To resolve this error, follow these steps:

1. Verify Inheritance: Ensure that your script correctly extends Node or one of its subclasses. For instance, a typical header for a script that should be attached to a Node would look like this:

   extends Node

   Make sure that the class you're extending exists and is correctly spelled.

2. Check Class Name: If you're using a custom class with class_name, make sure that the name is unique and that the custom class is recognized by Godot. You can also try removing the class_name to test if the error is related to that.

3. Review the Script File: Open the script file in an external text editor to confirm that it is not corrupted and the content is in a valid GDScript format.

4. Reattach the Script: Try detaching the script from the Node and reattaching it. Sometimes, simply reassigning the script can clear up any misunderstandings the engine has about the script's inheritance.

5. Restart Godot Engine: If none of the above steps work, try closing and reopening the Godot engine. Occasionally, the engine might not update its internal state correctly, leading to confusing errors.

Following these troubleshooting steps should help you resolve the error and allow your script to correctly inherit from Node or the appropriate subclass.