"Help-Asap" Can someone create a Wolf-3-D 3-d polygon map in OpenGL

Hey, I know how to create quads triangles ext in OpenGL but how does someone create a wolf3d 3d polygon map with a ceiling wall & floor just colored not textured I know you can draw a map like this in OpenGL. Can someone give me some code to look at I mean I’m desperate I need this info asap?