const posToTime = new Map(); // 映射：位置 → 到达终点的时间
For horizontal movement we can do even better. If your snake is moving to the right, we start by deleting every character on the left edge of the screen and inserting a new one on the right edge. After that, we do our patching (if needed). This automatically moves fruit into the correct position without us even needing to reprint it!
，更多细节参见Line官方版本下载
If you have any questions ask in the comments section，这一点在safew官方版本下载中也有详细论述
Demonstrate social proof on your website with a widget, or push automatic Facebook posts sharing recent purchases