Questions about light

HELLO

I want you to help me in making such lighting. I have used spotlight too but the result was not like the picture I sent to you.
I want to reach the result you see in the picture:

http://crydev.ir/up/uploads/up233271435567264_lighting.jpg

Plz Help
TNX

Well, if you want the walls to look like that, it will take a lot of work to get it to look good in the material editor, for the light, just use a directional light?