Added title screen sound, added sound when mousing over menu links, update "required" Ruby version to 3.0+ in README

README.md

@@ -10,7 +10,7 @@ Creating a multiplayer first-person-shooter in pure Ruby; Using C extensions onl
 ![screenshot](https://raw.githubusercontent.com/cyberarm/i-mic-fps/master/screenshots/screenshot-game.png)
 
 ## Using
-Ruby 2.5+ interpeter with support for the Gosu game library C extension.
+Ruby 3.0+ interpeter with support for the Gosu game library C extension.
 * Clone or download this repo
 * `bundle install`
 * `bundle exec ruby i-mic-fps.rb [options]`

lib/ext/element.rb

@@ -0,0 +1,13 @@
+module CyberarmEngine
+  class Element
+    alias enter_original enter
+
+    def enter(_sender)
+      if @block && is_a?(CyberarmEngine::Element::Link)
+        get_sample("#{IMICFPS::GAME_ROOT_PATH}/static/sounds/ui_hover.ogg").play
+      end
+
+      enter_original(_sender)
+    end
+  end
+end

lib/sound_effects/fade_in.rb

@@ -19,7 +19,7 @@ class IMICFPS
       end
 
       def calculate_volume
-        volume = (SoundManager.sfx_volume - @initial_volume) * ratio
+        (SoundManager.sfx_volume - @initial_volume) * ratio
       end
 
       def update

lib/states/game_states/boot.rb

@@ -6,6 +6,8 @@ class IMICFPS
       @title = Text.new(IMICFPS::NAME, size: 100, z: 0, color: Gosu::Color.new(0xff000000), border: false, font: IMICFPS::BOLD_SANS_FONT)
       @logo = get_image("#{IMICFPS::GAME_ROOT_PATH}/static/logo.png")
 
+      @title_screen_sound = get_sample("#{IMICFPS::GAME_ROOT_PATH}/static/sounds/title_screen.ogg")
+
       @start_time = Gosu.milliseconds
       @time_to_live = 5_000
 
@@ -43,6 +45,8 @@ class IMICFPS
 
       # SoundManager.sound_effect(SoundEffect::FadeIn, sound: SoundManager.sound("base", :shield_regen), duration: 3_000.0)
       window.needs_cursor = false
+
+      @title_screen_sound_channel = @title_screen_sound.play(1.0)
     end
 
     def draw
@@ -88,6 +92,7 @@ class IMICFPS
     def button_down(id)
       super
 
+      @title_screen_sound_channel.stop
       push_state(MainMenu)
     end
   end