side of wall and floor

So I've gotten the wall to work so that i don't go through it, i just made another class, but i sometimes have the same problem with the floors (although i don't know why?), so i've made another class thats similar to the one i just made for the side of the walls and just slightly tweaked to work vertically. Now that i've got those working, i just need to work on positioning the pieces properly, then I am going to work on creating enemies (for now they will just be a coloured square, and later, like my player, i will add in an image).