Do you think you'd be able to find that 2 line breakout? I'm currently doing a breakout implementation on my Commodore 64. In assembly though, so definitely more than two lines ;-) Nevertheless, a two line breakout in Basic would probably give lots of pointers on how to make things more compact.
Not the GP but you can find it on the "HEBDOGICIEL, les listings" Website [1]. Deulignes section, page 15 [2] (Casse-briques by Laurent Auble). Published in issue 104, page 12 (second box) [3]:
It didn't seem like any of your links was to a playable version, so I had a Goog' and a paste and came up with [1]. Pretty impressive game for that amount of code, I'd say.
I've never written a line of code on an actual MSX machine (even though I was around in the 80s), it's kind of amazing the amount of emulation Magic Power we casually throw around, these days. Massive thanks to all the emulation authors and (of course) retro computer archivists.
I remember this one well because I had an MSX, and like everyone else back then I didn't have that many games to play with, so I used this code quite extensively :)
