save project

snake.py

@@ -57,8 +57,11 @@ while True:
         num2 = random.randint(1,16)
         apple_x = 30*num1-30 
         apple_y = 30*num2-30
+        score += 10
     else:
         position.pop(0)    
+    if x < 0 or x > 630 or y < 0 or y > 450:
+        exit()
     position.append((x, y))
     screen.blit(background, (0, 0))
     screen.blit(snake_head, position[-1])