Initial support for SDL3 native file open dialogs ❤️

lib/gosu_ext.rb

@@ -0,0 +1,36 @@
+module Gosu
+  # ! nonblocking
+  def self.choose_file(&block)
+    callback_id = "gc_protect_#{Gosu.milliseconds}"
+
+    callback = lambda do |user_data, file_list, filter|
+      data = nil
+
+      if file_list
+        data = file_list.read_array_of_string
+      end
+
+      block.call(data)
+
+      W3DHubLauncher::MemCache.delete(callback_id)
+    end
+
+    W3DHubLauncher::MemCache[callback_id] = callback
+
+    SDL.ShowOpenFileDialog(
+      callback,
+      nil,
+      CyberarmEngine::Window.instance.sdl_window,
+      nil,
+      0,
+      W3DHubLauncher::CACHE_PATH,
+      false
+    )
+  end
+
+  def self.choose_folder()
+  end
+
+  def self.save_file()
+  end
+end