Impossible to save class property for target_source

[suhankins]

Defining property as target_source in FGD export requires it to be "Object". The problem is that if you just assign Object in a dictionary using editor, it's saved in .tres file as null, and upon restarting the project that null will be read as just no value defined. That in turn will result in that class property not getting exported into FGD at all.

I think we need some other way to define class property as target_source in FGD without Object.

[Adrihfu]

Changing it to StringName would fit target_source nature, being an unique name.

It doesn't seen a godot thing seeing how the Object Variant Type is used for Resources. Adding another type of resource works, but better to leave it for other resources; like material, decal and sound are being used.

For compatibility with projects which already use Object in their defined classes, null would work, but I feel it's better to leave null as is.

[suhankins]

For compatibility with projects which already use Object in their defined classes, null would work, but I feel it's better to leave null as is.

I believe you misunderstood me. Object being saved as null in the .tres file means that upon clearing Godot's cache or cloning the project, property will be assumed as just not filled in, and therefore won't be exported at all into an FGD.

Changing it to StringName would fit target_source nature, being an unique name.

While StringName would fit, it is already used to StringName itself, and some people probably rely on it, so I don't think it should be used.

[Adrihfu]

I believe you misunderstood me. Object being saved as null in the .tres file means that upon clearing Godot's cache or cloning the project, property will be assumed as just not filled in, and therefore won't be exported at all into an FGD.

I didn't misunderstood you, It happen to me, thats why I'm here.

While StringName would fit, it is already used to StringName itself, and some people probably rely on it, so I don't think it should be used.

I'm testing the addon in the 2025.12 release using Godot 4.5.stable, starting from an empty project.
The StringName is not check in the func_godot_fgd_entity_class.gd script, so is never parse to the FGD, so it cannot be edited from the map editor.

[suhankins]

The StringName is not check in the func_godot_fgd_entity_class.gd script, so is never parse to the FGD, so it cannot be edited from the map editor.

Oh, didn't expect that. I guess if that's the case, StringName would work well.