3rd person controller using GUI.button Windows Standalone

hello unity masters,

i have a big problem right now, i have a project to pass this weekend and my gui.button character control doesn't work ..

I have searched the forums and questions but i didn't find the answer i need. like transform.translate function . it works but it doesn't collide with anything

do you have a ready scripts to download ? or some codes to hard code ?

thank you very much in advance . really badly need this one :(