How to create a gd.StringName?

[ardawan]

i cannot pass the string to the AddResource method. even I tried to cast it to gd.StringName but still it was unsuccessful.

func (w *World) Ready() {             
    w.Class.Super().SetEnvironment(Environment.Instance{})             

    env.AddResource("world1", "res://world1.tres")                      
}

error:

env.AddResource undefined (type "grow.graphics/gd/internal/classdb".Environment has no field or method AddResource) 

even I've tried to make StringName var but there is no way to add string to it

    var name gd.StringName
    var path gd.Resource 

[Splizard]

It doesn't look like the Godot Environment class has an add_resource method?
https://docs.godotengine.org/en/4.2/classes/class_environment.html

I regards to StringName, this is a Godot defined reference type, it can be created with the StringName package. The value will be valid until it has been un-used for a frame.

func (w *World) Ready() {
    var name = StringName.New("Go string that will become a StringName")

    // do something with name
}

Note that for any godot reference types (including string names & classes), the zero value is not valid, ie. it is essentially nil. So passing Environment.Instance{} does not create a new Environment as you may be expecting. Use Environment.New for this.

[ardawan]

Thanks for the explanation.
What I'm trying to do is to add new_environment.tres to the class and see it on the editor.

as you suggested, I've created this struct and trying to use the reference doc to find out how can I add my environment resource at res://new-environment.tres to the placeholder.
But there is no way for me to find anything that can make this happen.

It would be good if we have some kind of snippet/example for it.

type World struct {                                       
    classdb.Extension[World, WorldEnvironment.Instance] `gd:"World"`     
    Environment                          WorldEnvronment.Instance
}

func (w *World) Ready(ctx gd.Context) {
    w.Environment.SetEnvironment(??)
}

[Splizard]

It's certainly easier to manage resources in this way from the Godot Editor, unless you need to change the environment dynamically.

In such a case you could load the .tres file using the ResourceLoader and cast it into the correct type using gd.As so it can be passed to the function.