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snake.py

@@ -52,7 +52,13 @@ while True:
     else:
         y += 30
     position.append((x, y))
-    position.pop(0)
+    if x==fx and y==fy:
+        nx=randint(1,22)
+        ny=randint(1,16)
+        fx=nx*30-30
+        fy=nx*30-30
+    else:
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -60,11 +66,6 @@ while True:
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
-    if x==fx and y==fy:
-        fx=randint(0,660)
-        fy=randint(0,480)
-
-
     # 将果实画上去
     screen.blit(food, (fx, fy))
     # 刷新画面