custom exported flags

@tool
extends Node


enum FLAGS {WATER, FIRE, EARTH}
var flags: int = 0: set = _set_flags


func _get_property_list():
    var properties = []
    properties.append({
        "name": "flags",
        "type": TYPE_INT,
        "usage": PROPERTY_USAGE_DEFAULT,
        "hint": PROPERTY_HINT_FLAGS,
        "hint_string": _get_hint_string()
    })
    return properties


func _get_hint_string() -> String:
    var hint_string := ""
    var i := 0
    for key in FLAGS:
        if (i > 0):
            hint_string += ","
        var bit_flag: int = int(pow(2, FLAGS[key]))
        hint_string += "%s:%s" %[key, bit_flag]
        i += 1
    return hint_string


func _set_flags(value: int):
    flags = value
    print(_get_flags_data())


func _get_flags_data() -> Dictionary:
    var result_dict := {}
    for key in FLAGS:
        var bit_flag: int = int(pow(2, FLAGS[key]))
        result_dict[key] = bool(flags & bit_flag)
    return result_dict