lighttroupe/luz-next

require 'user_object'

class VariableInput < ChildUserObject
    attr_reader :current_value, :last_value

    def self.new_renderer
        GuiUserObjectClassRenderer.new(self)
    end
    def new_renderer
        GuiVariableInputRenderer.new(self)
    end

    def after_load
        set_default_instance_variables(:current_value => 0.0, :last_value => 0.0)
        super
    end

    def do_value
        return 0.0 unless enabled?
        return @current_value if $env[:frame_number] == @last_resolve_frame_number

        @last_resolve_frame_number = $env[:frame_number]        # FIRST, to avoid recurrsion issues

        @last_value = @current_value

        resolve_settings
        user_object_try {
            @current_value = (value || 0.0).clamp(0.0, 1.0)
            return @current_value
        }
        0.0        # In case of exceptions
    end

    def changed?
        @current_value != @last_value
    end
end