The coding doesn't look to bad. One thing I would say, if you were looking for critiques, is that there's a lot of disorganised code. If you placed it all inside external classes, note the plural, then it'd be much more manageable for you. I think if you carry on that down route you may well run into problems later on when you come to modify it.

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The man who comes back through the Door in the Wall will never be quite the same as the man who went out.