GD0002: Missing partial modifier on declaration of type which contains nested classes that derive from RedotObject

==================================== ====================================== Value ==================================== ====================================== Rule ID GD0002 Category Usage Fix is breaking or non-breaking Non-breaking Enabled by default Yes ==================================== ======================================

Cause

A type that derives from RedotObject is contained in a non-partial type declaration.

Rule description

Redot source generators add generated code to user-defined types to implement the integration with the engine. Source generators can't add generated code to types that aren't declared partial.

public class InvalidParentType
{
    // MyNode is contained in a non-partial type so the source generators
    // can't enhance this type to work with Redot.
    public partial class MyNode : Node { }
}

public partial class ValidParentType
{
    // MyNode is contained in a partial type so the source generators
    // can enhance this type to work with Redot.
    public partial class MyNode : Node { }
}

How to fix violations

To fix a violation of this rule, add the partial keyword to the type declaration.

When to suppress warnings

Do not suppress a warning from this rule. Types that derive from RedotObject but aren't partial can't be enhanced by the source generators, resulting in unexpected runtime errors.