MORE INLINE MADNESS. (Oh hai locks).

I just asked Myriam to try the game. It was interesting, because she
doesn't usually code. She succeded the first two doors test.

At first she tried 'enter @left'. Since it was her third try (there
were some syntactic issues before) she got both the transcript of her
actions and the hint - which was confusing since only the hint was
spoken.

I think I'll disable hints when there's an error thrown by the code.
Then she tried 'enter @left; enter @right' - and the transcript told her
that the left door was locked and that the right door was trapped.

After a few more tries, she got the hint: 'you can unlock doors with the
unlock door command'. She tried 'unlock door @left', interestingly. When
she got 'door is undefined' she simply removed the 'door' part. Then
it told her the left door was unlocked. And then she tried just 'enter
@left', which obviously failed because you need to have all actions in
the code - then she tried 'unlock @left; enter @left' - which is the
solution! So I think there's some learning that's taking place here.

Maybe the game is becoming too easy, but I really don't know if it's
interesting enough to keep people interested even after trying 10+ times
with different answers...