Attack Of Zombies: A New Way of Player Movement

I have created a zombie manager script to move the newly instantiated zombies in gameplay. Also, a speed manager script that creates central speed for all zombies. Tomorrow, I can start to implement the logic behind human AI. During the time from the last update I made here about my game a lot changed. I have added features like spawning humans randomly at random number around the map. Also, now player cannot go through buildings and if the player is behind the building the building becomes transparent. The speed manager script can be worked on little bit more to make it little bit more accurate.