Godot: export doesn't work with enums from another script/class

[razcore-art]

neither of the following work, where g is set to autoload

export var type = g.BMW
export(g.Type) var type = g.BMW

gives error:

built-in:7 - Parse Error: invalid index 'BMW' in constant expression
modules/gdscript/gdscript.cpp:583 - Method/Function Failed, returning: ERR_PARSE_ERROR

this works tho':

var type = g.BMW

See attached project
godot-dbg.zip

edit
although it seems that if you close&reopen the project (possibly the scene, didn't try that one) the error disappears so you might have to recreate from scratch the simple project I attached.

[mhilbrunner]

On master or 3.0.3? Or both?

[vnen]

Isn't this the same as #14681?

[razcore-art]

Didn't cross my mind to search through closed issues. The version is master a9acdd8

[razcore-art]

I found something perhaps related. Like the above, g is a singleton script and doing something like

export(g.EntityType) var type setget _set_type

triggers the setter with a null value in all cases (before the children nodes etc. are ready).

In my script I have

export(g.EntityType) var type setget _set_type

func _set_type(val):
    # I'm forced to use this otherwise game crashes, even if I don't set `type` anywhere
    # in the script or inspector, it gets called by itself with `val = null` when
    # $Pattern (in this case) isn't present in the scene tree
    if val == null:
        return

    var type = val
    $Pattern.entity_type = type

edit
was just pointed to this issue #17436 that describes setters being triggered on load, which I though in the above is due to enum explicitly but it seems it's more generic

[chaigler]

Confirmed - still an issue as of 3.1 alpha 4.

[joaquin-montesdeoca]

Sorry to bother you but, was this released with the v3.1.beta3.official?

In said version, it doesn't seem to work properly yet. But I don't know if this commit was included in said version or if it will be included in the following one?

[akien-mga]

The fix was included in 3.1 beta 3, but the bug is indeed still reproducible in the current master branch (5fa5678).

[jabcross]

This also seems to happen with built-in enums.

export (Tween.TransitionType) var transition_type := Tween.TRANS_CUBIC

gives me the error

invalid index 'TransitionType' in constant expression

[akien-mga]

Another MRP from #26537:

Confirmed in 49d82f2:

SCRIPT ERROR: GDScript::reload: Parse Error: invalid index 'TEXT_SPAM_BASIC' in constant expression
   At: res://Node2D.gd:3.
ERROR: reload: Method/Function Failed, returning: ERR_PARSE_ERROR
   At: modules/gdscript/gdscript.cpp:580.

Interestingly, it actually works fine when you run the game.

MRP: New Game Project.zip

[that-richard]

Still happens to me?

[Zireael07]

@that-richard: I believe this was a fix for GDScript, not c#

[that-richard]

@that-richard: I believe this was a fix for GDScript, not c#

That is GDScript, I just have an external editor (VSCode) :D

[eastrd]

Hi, this issue suddenly happens in my 3.2.2
And restarting Godot doesn't fix this either...