save project

snake.py

@@ -56,9 +56,12 @@ while True:
         y += 30
     position.append((x, y))
     if x==a_x and y==a_y:
-        a_x=random.randint(0,630)
-        a_y=random.randint(0,450)
-    position.pop(0)
+        n1=random.randint(1,22)
+        n2=random.randint(1,16)
+        a_x=n1*30-30
+        a_y=n2*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