diff --git a/engine/plugins/pygame.py b/engine/plugins/pygame.py
index 0b0806d..dd009b6 100644
--- a/engine/plugins/pygame.py
+++ b/engine/plugins/pygame.py
@@ -18,43 +18,37 @@ class PygamePlugin(Plugin):
         pygame.init()
 
         # Initialisation des ressources
-        world.set(Display(pygame.display.set_mode((640, 480))))
-        world.set(Keyboard(set(), set(), set()))
-        world.set(Mouse(set(), set(), set(), Vec2(0.0, 0.0)))
+        world.set(Display(pygame.display.set_mode((640, 480))), Keyboard(), Mouse())
 
     @staticmethod
     def _check_events(world: World) -> None:
-        keys = world[Keyboard]._keys.copy()
-        keys_pressed: set[str] = set()
-        keys_released: set[str] = set()
+        keyboard = world[Keyboard]
+        keyboard._pressed.clear()
+        keyboard._released.clear()
 
-        buttons = world[Mouse]._buttons.copy()
-        buttons_pressed: set[int] = set()
-        buttons_released: set[int] = set()
-        mouse_position = world[Mouse]._position
+        mouse = world[Mouse]
+        mouse._pressed.clear()
+        mouse._released.clear()
 
         for event in pygame.event.get():
             if event.type == pygame.QUIT:
                 world[Game].stop()
             elif event.type == pygame.KEYDOWN:
                 key_name = pygame.key.name(event.key)
-                keys.add(key_name)
-                keys_pressed.add(key_name)
+                keyboard._keys.add(key_name)
+                keyboard._pressed.add(key_name)
             elif event.type == pygame.KEYUP:
                 key_name = pygame.key.name(event.key)
-                keys.remove(key_name)
-                keys_released.add(key_name)
+                keyboard._keys.remove(key_name)
+                keyboard._released.add(key_name)
             elif event.type == pygame.MOUSEBUTTONDOWN:
-                buttons.add(event.button)
-                buttons_pressed.add(event.button)
+                mouse._buttons.add(event.button)
+                mouse._pressed.add(event.button)
             elif event.type == pygame.MOUSEBUTTONUP:
-                buttons.remove(event.button)
-                buttons_released.add(event.button)
+                mouse._buttons.remove(event.button)
+                mouse._released.add(event.button)
             elif event.type == pygame.MOUSEMOTION:
-                mouse_position = Vec2(float(event.pos[0]), float(event.pos[1]))
-
-        world.set(Keyboard(keys, keys_pressed, keys_released))
-        world.set(Mouse(buttons, buttons_pressed, buttons_released, mouse_position))
+                mouse._position = Vec2(float(event.pos[0]), float(event.pos[1]))
 
     @staticmethod
     def _terminate_pygame(world: World) -> None:
@@ -106,10 +100,10 @@ class Keyboard:
     Ressource qui représente les entrées utilisateurs sur le clavier à la frame actuelle.
     """
 
-    def __init__(self, keys: set[str], pressed: set[str], released: set[str]) -> None:
-        self._keys = keys
-        self._pressed = pressed
-        self._released = released
+    def __init__(self) -> None:
+        self._keys: set[str] = set()
+        self._pressed: set[str] = set()
+        self._released: set[str] = set()
 
     def is_key_pressed(self, key_name: str) -> bool:
         """
@@ -153,13 +147,11 @@ class Mouse:
     Ressource qui représente l'état de la souris à la frame actuelle.
     """
 
-    def __init__(
-        self, buttons: set[int], pressed: set[int], released: set[int], position: Vec2
-    ) -> None:
-        self._buttons = buttons
-        self._pressed = pressed
-        self._released = released
-        self._position = position
+    def __init__(self) -> None:
+        self._buttons: set[int] = set()
+        self._pressed: set[int] = set()
+        self._released: set[int] = set()
+        self._position: Vec2 = Vec2(0.0, 0.0)
 
     def is_button_pressed(self, button: int) -> bool:
         """