in reply to Re^2: Challenge: Ricochet Robots
in thread Challenge: Ricochet Robots

> Want a harder challenge?

Rather not. This was still manageable, but a harder one would be less fun. I have enough of them at work.

> did you have fun?

Yes, especially when I finished it! ;-)

> you need 2GB RAM

The original version that didn't produce the moves was less memory hungry. But the initial solution that stored the configuration as a string ate all my machine's memory and wasn't able to finish, so I had to introduce pack to make it more compact. I'd be interested in seeing an alternative solution.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

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Re^4: Challenge: Ricochet Robots
by LanX (Saint) on Feb 19, 2021 at 14:15 UTC
    > > did you have fun?

    > Yes, especially when I finished it! ;-)

    Oh, at 3 am? Did it wake up your wife? ;-)

    > I have enough of them at work.

    Yeah me too.

    > I'd be interested in seeing an alternative solution.

    Don't wanna spoil the fun here. :)

    FWIW found a presentation in the internet from 2012 using most of the same principles though.

    Cheers Rolf
    (addicted to the Perl Programming Language :)
    Wikisyntax for the Monastery

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