Add input manager.

snake/input_manager.py

@@ -0,0 +1,10 @@
+import pygame
+
+
+class InputManager:
+    QUIT = 0
+
+    def process_input(self):
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                return InputManager.QUIT

snake/main.py

@@ -1,19 +1,19 @@
 import pygame
 from window import Window
+from input_manager import InputManager
 
 
 if __name__ == '__main__':
     window = Window(title='Snake', size=(800, 600), background_color=(0, 128, 0))
+    input_manager = InputManager()
     
     clock = pygame.time.Clock()
     framerate = 25
 
-    shall_abort = False
+    last_input = None
 
-    while not shall_abort:
-        for event in pygame.event.get():
-            if event.type == pygame.QUIT:
-                shall_abort = True
+    while last_input != InputManager.QUIT:
+        last_input = input_manager.process_input()
 
         window.reset()