lighttroupe/luz

class ActorEffectImageSpriteProgress < ActorEffect
    title                "Image Sprite Progress"
    description "Apply one frame of animation from a 'sprite', selected by percentage."

    categories :color

    hint "Supports images containing multiple frames, spaced equally, either horizontally or vertically."

    setting 'image', :image, :summary => true
    setting 'number', :integer, :range => 1..256, :default => 1..2
    setting 'progress', :float, :range => 0.0..1.0, :default => 0.0..1.0
    setting 'direction', :select, :options => [[:auto, 'Auto'],[:horizontal, 'Horizontal'],[:vertical, 'Vertical']], :default => :auto

    def render
        image.using {
            # wide images are animated horizontally, tall ones vertically
            if (direction == :horizontal) or ((direction == :auto) and (image.width > image.height))
                with_texture_scale_and_translate(1.0 / number, 1, number.choose_index_by_fuzzy(progress), 0) {
                    yield
                }
            else
                with_texture_scale_and_translate(1, 1.0 / number, 0, number.choose_index_by_fuzzy(progress)) {
                    yield
                }
            end
        }
    end
end