require "gosu" require "gosu_more_drawables" class DemoWindow < Gosu::Window def initialize super(500, 500, false) end def draw Gosu.draw_circle(250, 250, 200, 128, Gosu::Color.rgb(0, 200, 0)) Gosu.draw_arc(250, 250, 200, 1.0, 128, 4, Gosu::Color.rgba(127, 64, 0, 100)) end end DemoWindow.new.show