If you ran the current build and last build side by side, then you would see absolutely no difference. Well, assuming that you ignored the shell window, but the point stands that, on the surface, nothing has changed.
Beneath the surface, the needle has shifted from "this will possibly never work" towards "this will certainly be lots of work." In the spirit of code readability and compactness, that's all the technical detail you need to know.
On the less numerically creative side, I have realised that mystery adventures are thoroughly incompatible with development diaries. If you want to experience the mystery, then you would probably rather not read that I recently decided that Bob would be the real murderer.
I'll stop here, and return my focus to making things appear on the game screen. However, please get in touch if you are interested in the highs and lows of imitating Z80 assembly in Python.
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