说明：  这是一款塔防类游戏植物大战僵尸的代码，不同类型的僵尸与不同植物之间的攻防，当讲师进入房子就会输掉游戏，当防御了几波僵尸进攻之后就会赢得游戏进入下一关
(This is a tower defense game plant war zombie code, different types of zombies and different plants between the offensive and defensive, when the lecturer entered the house will lose the game, when the defense of several waves of zombie attacks will win the game into the next level.)