diff --git a/lib/objects/light.rb b/lib/objects/light.rb
new file mode 100644
index 0000000..c891031
--- /dev/null
+++ b/lib/objects/light.rb
@@ -0,0 +1,56 @@
+class IMICFPS
+  class Light
+    include OpenGL
+    MAX_LIGHTS = GL_MAX_LIGHTS-1
+    attr_accessor :x, :y, :z, :ambient, :diffuse, :specular
+    def self.number_of_lights
+      @number_of_lights ||= 0
+    end
+
+    # use as Light.number_of_lights+=n
+    def self.number_of_lights=(int)
+      @number_of_lights = int
+    end
+
+    def initialize(x,y,z)
+      @ambient  = [0.0, 0.0, 0.0, 1].pack("f*")
+      @diffuse  = [1, 0.5, 0, 1].pack("f*")
+      @specular = [0.0, 0.0, 0.0, 1].pack("f*")
+      @postion  = [0, 0, 0, 0].pack("f*")
+      @light_id = available_light
+    end
+
+    def available_light
+      raise "Using to many lights, #{Light.number_of_lights}/#{MAX_LIGHTS}" if Light.number_of_lights > MAX_LIGHTS
+      Light.number_of_lights+=1
+      puts "OpenGL::GL_LIGHT#{Light.number_of_lights}"
+      @light_id = Object.const_get "OpenGL::GL_LIGHT#{Light.number_of_lights}"
+    end
+
+    def ambient=(array)
+      @ambient = array.pack("f*")
+    end
+
+    def diffuse=(array)
+      @diffuse = array.pack("f*")
+    end
+
+    def specular=(array)
+      @specular = array.pack("f*")
+    end
+
+    def postion=(array)
+      @postion = array.pack("f*")
+    end
+
+    def draw
+      glLightfv(@light_id, GL_AMBIENT, @ambient)
+      glLightfv(@light_id, GL_DIFFUSE, @diffuse)
+      glLightfv(@light_id, GL_SPECULAR, @specular)
+      glLightfv(@light_id, GL_POSITION, @postion)
+      glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1)
+      glEnable(GL_LIGHTING)
+      glEnable(@light_id)
+    end
+  end
+end
diff --git a/lib/window.rb b/lib/window.rb
index 44b470e..23b847d 100644
--- a/lib/window.rb
+++ b/lib/window.rb
@@ -11,6 +11,7 @@ class IMICFPS
       super(window_width, window_height, fullscreen)
       # super(Gosu.screen_width, Gosu.screen_height, true)
       $window = self
+      @delta_time = Gosu.milliseconds
       @number_of_faces = 0
       @draw_skydome = true
       @skydome = Wavefront::Model.new("objects/skydome.obj")
@@ -117,7 +118,7 @@ class IMICFPS
       @camera_light.postion = @light_postion
       # @light_postion = [0.0, 10, 0, 0]
 
-      relative_speed = @speed#*delta_time
+      relative_speed = @speed*(delta_time/60.0)
 
       if button_down?(Gosu::KbUp) || button_down?(Gosu::KbW)
         @camera.z+=Math.cos(@angle_x * Math::PI / 180)*relative_speed
@@ -149,5 +150,11 @@ class IMICFPS
         @draw_skydome = !@draw_skydome
       end
     end
+
+    def delta_time
+      t = Gosu.milliseconds-@delta_time
+      @delta_time = Gosu.milliseconds
+      return t
+    end
   end
 end