save project

snake.py

@@ -57,8 +57,9 @@ while True:
     if x==w and y==c:
         n1=random.randint(1,22)
         n2=random.randint(1,16)
-        w=n2*30-30
-        c=n1*30-30
+        w=n1*30-30
+        c=n2*30-30
+    else:
         position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -72,4 +73,4 @@ while True:
     screen.blit(food, (w,c))
     # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(8)
\ No newline at end of file
+    FPSCLOCK.tick(3)
\ No newline at end of file