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Re^5: implementing a scrabble-esque game on Termux III

by tybalt89 (Prior)
on Dec 03, 2019 at 08:43 UTC ( #11109582=note: print w/replies, xml ) Need Help??


in reply to Re^4: implementing a scrabble-esque game on Termux III and Path::Tiny output
in thread implementing a scrabble-esque game on Termux III

my $newmask = ( $old ^ $word ) =~ tr/\0/\xff/cr; $flip and ( $board, $heights ) = flip $board, $heights; substr $board, $pos, length $word, $word; #say "new mask is $newmask"; substr $heights, $pos, length $highs, ( $highs & $newmask ) =~ tr/0-4/1-5/r | ( $highs & ~$newmask ); $flip and ( $board, $heights ) = flip $board, $heights; my $tiles = join '', @tiles; say "word is $word"; $tiles =~ s/$_// for split //, $word & $newmask;

let me try...

my $newmask = ( $old ^ $word ) =~ tr/\0/\xff/cr;

$newmask is "\xff" where the old and new words differ, that is a new tile must be used. It is "\0" where no tile is to be placed (using existing board state).

$flip and ( $board, $heights ) = flip $board, $heights; substr $board, $pos, length $word, $word; #say "new mask is $newmask"; # $newmask has unprintable characters +, use something like Data::Dump that will show them. substr $heights, $pos, length $highs, ( $highs & $newmask ) =~ tr/0-4/1-5/r | ( $highs & ~$newmask );

hehehe! GOAL => increment the stack sizes for only the new tiles.

$highs & $newmask produces a string that only has non-null characters where new tiles are to be played. In other words, it isolates the stacks for the new tiles, everywhere else is "\0".
=~ tr/0-4/1-5/r increments the height for each place a new tile is played.
~$newmask inverts $newmask to be "\xff" only where old tiles remain visible.
$highs & ~$newmask produces a string with only the unchanged stack values (and "\0" where the new values are).
Finally, the | puts the old and new stack counts together so they can be replaced in the heights string.

$flip and ( $board, $heights ) = flip $board, $heights; my $tiles = join '', @tiles; say "word is $word"; $tiles =~ s/$_// for split //, $word & $newmask;

This removes the tiles that are used for this word from the string of all tiles, soon to be replaced in @tiles.

Hope this helps...

Replies are listed 'Best First'.
Re^6: implementing a scrabble-esque game on Termux III and how best to create a main data structure
by Aldebaran (Deacon) on Dec 10, 2019 at 05:19 UTC
    Hope this helps...

    It does. I was able to see these masks by unpacking them as hexidecimal. Here's a bit of output:

    Fishing for tips. Thanks for your comment,

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