Aggiungi la gestione del joystick per il controllo degli eventi nella finestra di gioco

engine/sdl2.py

@@ -116,8 +116,10 @@ class GameWindow:
                 elif event.type == sdl2.SDL_MOUSEMOTION:
                     self.scroll_view((event.motion.x//self.cell_size, event.motion.y//self.cell_size))
                 elif event.type == sdl2.SDL_JOYBUTTONDOWN:
-                    key = sdl2.SDL_JoystickGetButton(event.jbutton.which, event.jbutton.button)
+                    joystick = sdl2.SDL_JoystickOpen(event.jbutton.which)
+                    key = sdl2.SDL_JoystickGetButton(joystick, event.jbutton.button)
                     self.key_callback(key)
+                    sdl2.SDL_JoystickClose(joystick)
                     
             # Disegna qui gli sprite
             self.renderer.present()