Initial functioning work to get IPC working via UNIX sockets since ractors are still not a viable option :sad:

lib/gui_ext.rb

@@ -4,6 +4,8 @@ module W3DHubLauncher
     WHITE_IMAGE = Gosu.render(64, 64, retro: true) { Gosu.draw_rect(0, 0, 32, 32, Gosu::Color::WHITE) }
 
     def safe_get_image(path, retro: false)
+      raise RuntimeError, "Images may only be loaded from the main thread!" unless Thread.current == Thread.main
+
       return get_image(path, retro: retro) if File.exist?(path)
 
       path = "#{ROOT_PATH}/media/default.png"
@@ -21,5 +23,9 @@ module W3DHubLauncher
         circle.draw(0, 0, 1, 1, 1, 0xff_ffffff, :multiply)
       end
     end
+
+    def on_main_thread(block)
+      window.add_to_queue(block)
+    end
   end
 end