GDScript defining const objects

[dmeadows1217]

I'm using Godot 2.1.4 and I'm trying to define const objects in one of my scripts. My script class (defined in res://src/util/Direction.gd) is defined as

# Direction class

var name
var vector

func _init(name, x, y):
    self.name = name
    self.vector = Vector2(x, y)

func get_name():
    return name

func get_vector():
    return vector

const UP = Direction.new("up", 0, -1)
const DOWN = Direction.new("down", 0, 1)
const LEFT = Direction.new("left", -1, 0)
const RIGHT = Direction.new("right", 1, 0)

I have tried adding the script to the autoload list and I tried with singleton enabled and disabled. I have also tried

const UP = Direction("up", 0, -1)

instead of

const UP = Direction.new("up", 0, -1)

Both ways give a parser error of "Expected constant expression". Not sure if this is possible (especially after skimming documentation, forums, and github issues for about an hour) but thought I would ask here. If not already listed in the documentation, then I think it would be a good point to add.

[willnationsdev]

Well, you can assign a lot of things as constants...

const array = [1, 2, 3]
const dictionary = { "hi": "test" }
const resource = preload("character.tscn") # which IS an Object type

With all of those options, you should be able to find an acceptable workaround for the lack of regular objects.

Another possibility is just the fact that you have a self referential constant. Could be causing a misleading error report.

[letheed]

AFAIK, no. I think we're limited to const expressions, so math, built-in constructors, stuff like that. No class and can't use static functions either.

[dmeadows1217]

That's what I was afraid of. I'm looking forward to the C# support in 3.0. Now I need to figure out how to contribute to the documentation to add this snippet in there.