Linux下Gtk开发的贪吃蛇游戏：1. 可用鼠标或键盘操作移动蛇2. 蛇会自动移动3. 可暂停和重新开始4. 积分并计时，给出积分计时比-Snake game with GTK in Linux: 1. Move snake by mouse or keyboard2. Snake will automatically move 3. Can pause and re-start 4. The points and timing and the ratio of points and timi