How to get the index of a 3d Physics layer?

Question

I need to build a bit flag to pass to PhysicsDirectSpaceState.intersect_ray(). To do this, I need the index of the 3d physics layer I've named 'Player' in Project Settings/Layer Names. Rather than hardcoding this flag in my script, is there a way for me to query the API to find out what flag index I gave to the layer "Player"?

Comments

Are you referring to the collision layer?

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Yes. The value you enter in the Project Settings/Layer Names/3d Physics spreadsheet.

Answer 1

I think you need something like this:

func layer_index_from_name(target_name):
    for i in range(0, 19, 1):
        var layer_name = ProjectSettings.get_setting("layer_names/3d_physics/layer_" + str(i+1))
        if layer_name == target_name:
            return int(pow(2,i))
    return null



func _ready():
    var look_for = "test"
    var res = layer_index_from_name(look_for)
    if res: 
        print(res)
    else:
        print("Not found")