Fix

src/app.rb

@@ -12,6 +12,8 @@ require_relative "lib/objects.rb"
 require_relative "lib/controller.rb"
 require_relative "lib/world.rb"
 
+require_relative "ui/mainmenu.rb"
+
 class Window < Gosu::Window
 	attr_accessor :caption, :ui, :world, :mainmenu
 	attr_reader :width, :height, :fonts

src/lib/ui.rb

@@ -69,6 +69,8 @@ class Button < UI
 				default: 0xaa_aaaaaa
 			}
 		}
+
+		@events = {}
 	end
 
 	def hover?
@@ -96,32 +98,3 @@ class Button < UI
 		self.draw_text(self.text, self.font, self.width/2 - self.text_width/2, self.height/2 - self.text_height/2, self.colors[:text][sel])
 	end
 end
-
-
-class MainMenu < UI
-	attr_accessor :show, :playbtn, :quitbtn
-	def initialize(window, show=false)
-		super window, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 99
-		@show = show
-
-		@playbtn = Button.new(self.window, self, "Play", self.window.fonts[:button])
-		@playbtn.add_event(:onclick, method(:quit_game))
-		@playbtn.x, @playbtn.y = self.width/2 - @playbtn.width/2, self.height/2 - @playbtn.height/2
-
-		@quitbtn = Button.new(self.window, self, "Quit", self.window.fonts[:button])
-		@quitbtn.x, @quitbtn.y = self.width/2 - @quitbtn.width/2, @quitbtn.height + @playbtn.y + 16
-	end
-
-
-	def render
-		if( @show ) then
-			self.draw_rect(0, 0, self.width, self.height, 0xaa_111015)
-
-			titletext = "Hohmann Miner"
-			titlewidth = self.window.fonts[:title].text_width(titletext)
-			self.draw_text(titletext, self.window.fonts[:title], self.width/2 - titlewidth/2, self.height/4)
-			@playbtn.render
- 			@quitbtn.render
-		end
-	end
-end

src/ui/mainmenu.rb

@@ -0,0 +1,31 @@
+def quit_game
+	puts "QUIT"
+end
+
+class MainMenu < UI
+	attr_accessor :show, :playbtn, :quitbtn
+	def initialize(window, show=false)
+		super window, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 99
+		@show = show
+
+		@playbtn = Button.new(self.window, self, "Play", self.window.fonts[:button])
+		@playbtn.add_event(:onclick, method(:quit_game))
+		@playbtn.x, @playbtn.y = self.width/2 - @playbtn.width/2, self.height/2 - @playbtn.height/2
+
+		@quitbtn = Button.new(self.window, self, "Quit", self.window.fonts[:button])
+		@quitbtn.x, @quitbtn.y = self.width/2 - @quitbtn.width/2, @quitbtn.height + @playbtn.y + 16
+	end
+
+
+	def render
+		if( @show ) then
+			self.draw_rect(0, 0, self.width, self.height, 0xaa_111015)
+
+			titletext = "Hohmann Miner"
+			titlewidth = self.window.fonts[:title].text_width(titletext)
+			self.draw_text(titletext, self.window.fonts[:title], self.width/2 - titlewidth/2, self.height/4)
+			@playbtn.render
+ 			@quitbtn.render
+		end
+	end
+end