save project

snake.py

@@ -55,11 +55,13 @@ while True:
     else:
     else:
         y += 30
         y += 30
     position.append((x, y))
     position.append((x, y))
-    position.pop(0)
+    
     if x == apple_X and y == apple_Y:
     if x == apple_X and y == apple_Y:
-        apple_X = random.randint(0,660)
-        apple_Y = random.randint(0,480)
+        apple_X = random.randint(1,22)* 30 - 30
+        apple_Y = random.randint(0,16)* 30 - 30
     # 将背景图画上去
     # 将背景图画上去
+    else:
+        position.pop(0)
     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
     screen.blit(snake_head, position[-1])
     screen.blit(snake_head, position[-1])