save project

snake.py

@@ -54,10 +54,12 @@ while True:
     else:
     else:
         y += 30
         y += 30
     position.append((x, y))
     position.append((x, y))
-    position.pop(0)
+    
     if a_x == x and a_y==y:
     if a_x == x and a_y==y:
-        a_x=random.randint(0,660)
-        a_y=random.randint(0,480)
+        a_x=random.randint(1,22)*30-30 
+        a_y=random.randint(1,16)*30-30
+    else:
+        position.pop(0)
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     # 将贪吃蛇的头画上去