Redid menus, stubbed Entity

lib/states/closing.rb

@@ -0,0 +1,28 @@
+class IMICRTS
+  class Closing < CyberarmEngine::GuiState
+    def setup
+      @logo = Gosu::Image.new("assets/logo.png")
+      @color = Gosu::Color.new(0xffffffff)
+
+      @started_at = Gosu.milliseconds
+      @close_time = 3_000
+    end
+
+    def draw
+      Gosu.draw_rect(0, 0, window.width, window.height, @color)
+      @logo.draw(window.width / 2 - @logo.width / 2, window.height / 2 - @logo.height / 2, 2, 1.0, 1.0, @color)
+    end
+
+    def update
+      super
+      factor = (1.0 - ((Gosu.milliseconds - @started_at) / @close_time.to_f)).clamp(0.0, 1.0)
+      @color.alpha = 255 * (factor - 0.1)
+
+      window.close if Gosu.milliseconds - @started_at >= @close_time
+    end
+
+    def button_up(id)
+      window.close if id == Gosu::KB_ESCAPE
+    end
+  end
+end