Get or set properties

[ring-c]

Cant undersdtand how to get a property of a node.

Example: in tps-demo there is a player scene.
In scene there is AnimationTree and a script on player.

animation_tree["parameters/state/transition_request"] = "strafe"

How can I do this from gd?

[Splizard]

Thanks for bringing this to my attention, it looks like AnimationTree depends on dynamic properties, I have just added Object.Set and Object.Get functions for this in the graphics.gd/variant/Object package.

Object.Set(animation_tree, "parameters/state/transition_request", "strafe")

[ring-c]

Cool! Works for me. Thanks!

[ring-c]

@Splizard it looks like i cannot convert to more complex types, same for Object.Call. For example if return value is Vector3.XYZ. Sould we return something not from internal? Like variant.Any?

[Splizard]

It has crossed my mind, which type is really more convenient for users, any or Variant.Any!

You can retrieve Vector values from an any using Go interface assertions:

var pos = Object.Get(obj, "position").(Vector3.XYZ) // panic if the type doesn't match
pos, ok := Object.Get(obj, "position").(Vector3.XYZ) // ok boolean signals whether this is the right type or not

switch pos := Object.Get(obj, "position").(type) {
case Vector3.XYZ:
    // do something with pos   
}

[ring-c]

Well, it does not work for me right now.

res, ok :=  Object.Call(body, "some_func").(Vector3.XYZ)

where some_func returns Vector3.XYZ, ok will be false

and

result := Object.Call(body, "get_target").(Vector3.XYZ)

will result in panic

panic: interface conversion: interface {} is gd.Variant, not struct { X float32; Y float32; Z float32 }

I do check with

Object.HasMethod(body, "some_func")

and its ok.

I can convert to go struct with classdb.As but for this i need to know/import concrete type, with is not good for me.

[Splizard]

oh, I see that this is an issue effecting Object.Call specifically, I've pushed a fix a012dde