注意：“对穿”是不算相遇的。猫和老鼠的移动方式相同：平时沿直线走，下一步如果会走到障碍物上去或者出界，就用1秒的时间做一个右转90°。一开始它们都面向北方。-Note: " The dress" is not met. Tom and Jerry the same way as the movement: go straight along the normal, the next step if the barrier will go up or go out of boun