save project

snake.py

@@ -54,14 +54,16 @@ while True:
         y -= 30
         y -= 30
     else:
     else:
         y += 30
         y += 30
+
+    position.append((x, y))
     if x==apple_x and y==apple_y:
     if x==apple_x and y==apple_y:
         apple_x=random.randint(0,21)
         apple_x=random.randint(0,21)
         apple_y=random.randint(0,15)
         apple_y=random.randint(0,15)
         apple_x=apple_x*30
         apple_x=apple_x*30
         apple_y=apple_y*30
         apple_y=apple_y*30
-
-    position.append((x, y))
-    position.pop(0)
+    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