save project

snake.py

@@ -58,6 +58,8 @@ while True:
         apple_y = num2 * 30 - 30 
         apple_y = num2 * 30 - 30 
     else:
     else:
         position.pop(0)
         position.pop(0)
+    if x < 0 or x > 630 or y < 0 or y > 450:
+        exit()    
     screen.blit(background,(0,0))
     screen.blit(background,(0,0))
     screen.blit(right, position[-1])
     screen.blit(right, position[-1])
     screen.blit(food,(apple_x,apple_y))
     screen.blit(food,(apple_x,apple_y))
@@ -67,4 +69,4 @@ while True:
     for i in range(len(position)-1):
     for i in range(len(position)-1):
         screen.blit(body,position[i])  
         screen.blit(body,position[i])  
     pygame.display.update()
     pygame.display.update()
-    FPSCLOCK.tick(7)
+    FPSCLOCK.tick(5)
\ No newline at end of file