Refactor input handling: replace hardcoded key inputs with configurable key bindings for character movement, inventory navigation, and actions; enhance settings scene with key rebind functionality and add credits scene.

credits/scene.rb

@@ -0,0 +1,44 @@
+class Credits < Scene
+  def initialize
+    super
+    @font = Gosu::Font.new(32, name: "assets/fonts/tn.ttf")
+    @small_font = Gosu::Font.new(20, name: "assets/fonts/tn.ttf")
+  end
+
+  def update(_dt)
+    # nothing needed
+  end
+
+  def draw
+    Gosu.draw_rect(0, 0, *SCREEN_SIZE, Gosu::Color.new(0xFF131313))
+
+    # title (centered)
+    title = "Credits"
+    tx = (720 - @font.text_width(title)) / 2
+    @font.draw_text(title, tx, 80, 1, 1, 1, Gosu::Color::YELLOW)
+
+    # main content
+    # this is kinda useless and i could just hardcode the positions, or even the image itself but yeah
+    lines = [
+      "Developer: Syed Daanish",
+      "Artist: Syed Daanish"
+    ]
+
+    lines.each_with_index do |line, i|
+      x = (720 - @small_font.text_width(line)) / 2
+      y = 180 + i * 40
+      @small_font.draw_text(line, x, y, 1, 1, 1, Gosu::Color::WHITE)
+    end
+
+    # hint at bottom
+    hint = "Press ESC to return"
+    hx = (720 - @small_font.text_width(hint)) / 2
+    @small_font.draw_text(hint, hx, 420, 1, 1, 1, Gosu::Color::GRAY)
+  end
+
+  def button_down(id, _pos)
+    if id == Gosu::KB_ESCAPE || id == Gosu::KB_RETURN
+      $bus.emit(:change_scene, Menu)
+    end
+  end
+end