Hi, Getmeout, welcome to PsychCentral (PC).

Sounds like a really nasty dream where you're pretty helpless. My immediate thought when you were describing the homeless man at first was he seemed like a zombie to me. When you gave the actual description I was surprised he wasn't dressed in white :-)

Usually I follow the feelings in my dreams, see where they're like feelings in my real life. If symbols really stick out, like your room 20, I look and see what I would make of that in real life too (are you 20 or did/does something happen to you at that age?). I think the more real a dream feels, the more important it is to us, we're really trying to get ourselves to pay attention to something. You're afraid of the homeless man in your dream, maybe you are afraid of being homeless now? Girls are hidden behind doors and locked up away from you, I don't know what your association with that idea may be. I would just deconstruct the dream like a puzzle, see what sparks in your thinking. It's your dream, you thought it up for yourself; I would remind myself of that so I'm not afraid of the dream anymore, it's your psyche trying to help you.