87 |
$visited[$pos]++; |
$visited[$pos]++; |
88 |
} |
} |
89 |
|
|
|
my ( $tr_x, $tr_y ); |
|
|
my ( $bl_x, $bl_y ); |
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|
90 |
sub x_y { |
sub x_y { |
91 |
my $p = shift; |
my $p = shift; |
92 |
|
|
93 |
my $update = 0; |
$p ||= $pos; |
|
if ( ! defined( $p ) ) { |
|
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$p = $pos; |
|
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$update = 1; |
|
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} |
|
94 |
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|
95 |
my $y = int($p / ($ll*2)); |
my $y = int($p / ($ll*2)); |
96 |
my $x = int(($p % $ll) / 2); |
my $x = int(($p % $ll) / 2); |
97 |
|
|
98 |
warn "??? x_y($p) $x,$y tr: $tr_x,$tr_y bl: $bl_x,$bl_y\n"; |
warn "## x_y($p) -> $x,$y\n"; |
|
|
|
|
if ( $update ) { |
|
|
|
|
|
# $tr_x = $x if $x > $tr_x && $y == $tr_y; |
|
|
# $tr_y = $y if $y < $tr_y && $x == $tr_x; |
|
|
|
|
|
if ( |
|
|
$y < $tr_y |
|
|
|| |
|
|
$y <= $tr_y && $x > $tr_x |
|
|
) { |
|
|
( $tr_x, $tr_y ) = ( $x, $y ); |
|
|
warn "## UPDATED tr: $tr_x,$tr_y\n"; |
|
|
} |
|
|
|
|
|
if ( |
|
|
$x < $bl_x |
|
|
|| |
|
|
$y > $bl_y |
|
|
) { |
|
|
( $bl_x, $bl_y ) = ( $x, $y ); |
|
|
warn "## UPDATED bl: $bl_x,$bl_y\n"; |
|
|
} |
|
|
|
|
|
# $bl_x = $x if $x < $bl_x; # && $y == $bl_y; |
|
|
# $bl_y = $y if $y > $bl_y; # && $x == $bl_x; |
|
|
|
|
|
} |
|
|
|
|
|
warn "## x_y($p) -> $x,$y ", |
|
|
$update ? " tr: $tr_x,$tr_y bl: $bl_x,$bl_y" : '', |
|
|
"\n"; |
|
99 |
|
|
100 |
# return ($x,$y) if wantarray; |
# return ($x,$y) if wantarray; |
101 |
return "$x,$y"; |
return "$x,$y"; |
118 |
|
|
119 |
my $ok_path = qr/[\|\-]/; |
my $ok_path = qr/[\|\-]/; |
120 |
|
|
121 |
|
my @corners; |
122 |
|
my $corners_usage; |
123 |
|
|
124 |
sub can_turn { |
sub can_turn { |
125 |
my $try_step = shift; |
my $try_step = shift; |
126 |
die "no step?" unless defined $try_step; |
die "no step?" unless defined $try_step; |
136 |
$trace[ $turn_pos ] = $old; |
$trace[ $turn_pos ] = $old; |
137 |
|
|
138 |
if ( $board[ $turn_pos ] =~ $ok_path ) { |
if ( $board[ $turn_pos ] =~ $ok_path ) { |
139 |
warn "OK can_turn $try_step $step_name[$try_step] turn_pos = $turn_pos b($board[$turn_pos]) t($trace[$turn_pos])\n"; |
my $xy = x_y($pos); |
140 |
|
warn "OK can_turn $try_step $step_name[$try_step] turn_pos = $turn_pos b($board[$turn_pos]) t($trace[$turn_pos]) from $xy\n"; |
141 |
$step = $try_step; |
$step = $try_step; |
142 |
|
push @corners, $xy; |
143 |
|
$corners_usage->{$xy}++; |
144 |
return 1; |
return 1; |
145 |
} else { |
} else { |
146 |
warn "NOPE can_turn $try_step $step_name[$try_step] turn_pos = $turn_pos b($board[$turn_pos]) t($trace[$turn_pos])\n"; |
warn "NOPE can_turn $try_step $step_name[$try_step] turn_pos = $turn_pos b($board[$turn_pos]) t($trace[$turn_pos])\n"; |
166 |
|
|
167 |
@trace = ($unknown) x ( $#board + 1 ); |
@trace = ($unknown) x ( $#board + 1 ); |
168 |
@directions = (); |
@directions = (); |
169 |
|
@corners = (); |
170 |
trace; |
trace; |
171 |
|
|
172 |
my $len = 0; |
my $len = 0; |
|
( $tr_x, $tr_y ) = ( $x,$y ); |
|
|
( $bl_x, $bl_y ) = ( $x,$y ); |
|
173 |
$step = 0; |
$step = 0; |
174 |
|
|
175 |
if ( $visited[$pos] > 3 ) { |
my $usage = $corners_usage->{"$x,$y"} || 0; |
176 |
warn "*** shape from $x,$y pos: $pos iterated 4 times, skipping\n"; |
|
177 |
|
warn "<<< shape from $x,$y [usage: $usage] pos: $pos\n"; |
178 |
|
|
179 |
|
if ( $usage > 4 ) { |
180 |
|
warn "SKIPPED, usage > 4\n"; |
181 |
return; |
return; |
182 |
} |
} |
183 |
|
|
|
warn "<<< shape from $x,$y pos: $pos\n"; |
|
|
|
|
184 |
while( 1 ) { |
while( 1 ) { |
185 |
|
|
186 |
my $next_pos = $pos + $move_by[ $step ]; |
my $next_pos = $pos + $move_by[ $step ]; |
200 |
} |
} |
201 |
warn draw; |
warn draw; |
202 |
|
|
|
warn "## tr: $tr_x,$tr_y bl: $bl_x,$bl_y\n"; |
|
|
|
|
203 |
if ( $debug ) { |
if ( $debug ) { |
204 |
print "WAIT> press enter | ",show_directions; my $foo = <STDIN>; |
print "WAIT> press enter | ",show_directions; my $foo = <STDIN>; |
205 |
} |
} |
207 |
|
|
208 |
push @shapes_found, { x => $x, y => $y, len => $len, directions => show_directions }; |
push @shapes_found, { x => $x, y => $y, len => $len, directions => show_directions }; |
209 |
|
|
210 |
my $tr = "$tr_x,$tr_y"; |
warn "### corners: ",join(' ', map { $_ . " [" . $corners_usage->{$_} . "]" } @corners),"\n"; |
211 |
my $bl = "$bl_x,$bl_y"; |
warn ">>> ended at $pos, line length: $len, directions traversed: ",show_directions,"\n"; |
|
|
|
|
warn ">>> ended at $pos, line length: $len, directions traversed: ",show_directions," tr: $tr bl: $bl\n"; |
|
212 |
|
|
213 |
if ( ! grep( /\Q$tr\E/, @shapes_start ) && $tr_x < 8 ) { |
foreach my $c ( @corners ) { |
214 |
warn "INFO: added $tr top-right\n"; |
if ( ! grep( /\Q$c\E/, @shapes_start ) ) { |
215 |
push @shapes_start, $tr; |
warn "INFO: added corner $c as shape start\n"; |
216 |
} |
push @shapes_start, $c; |
217 |
if ( ! grep( /\Q$bl\E/, @shapes_start ) && $bl_y < 8 ) { |
} |
|
warn "INFO: added $bl bottom-left\n"; |
|
|
push @shapes_start, $bl; |
|
218 |
} |
} |
219 |
|
|
220 |
print "WAIT> press enter"; my $foo = <STDIN>; |
print "WAIT> press enter"; my $foo = <STDIN>; |
223 |
} |
} |
224 |
|
|
225 |
foreach my $start ( @shapes_start ) { |
foreach my $start ( @shapes_start ) { |
226 |
my $len = shape( split(/,/,$start) ); |
my ($x,$y) = split(/,/,$start); |
227 |
warn "## $start has $len elements\n"; |
if ( $x < 8 && $y < 8 ) { |
228 |
|
my $len = shape( split(/,/,$start) ); |
229 |
|
warn "## $start has $len elements\n"; |
230 |
|
} else { |
231 |
|
warn "SKIPPED $start\n"; |
232 |
|
} |
233 |
|
} |
234 |
|
|
235 |
|
sub is_symmetric { |
236 |
|
my $path = shift || die "no path?"; |
237 |
|
|
238 |
|
my $h = length($path)/2; |
239 |
|
return 0 if int($h) != $h; |
240 |
|
my ($l,$r) = ( substr($path,0,$h), substr($path,$h) ); |
241 |
|
$r =~ tr/lrud/rldu/; |
242 |
|
# warn "$l -- $r\n"; |
243 |
|
return 0 unless $l eq $r; |
244 |
|
return 1; |
245 |
} |
} |
246 |
|
|
247 |
print ">>> RESULTS:\n"; |
print ">>> RESULTS:\n"; |
248 |
foreach my $r ( @shapes_found ) { |
foreach my $r ( @shapes_found ) { |
249 |
printf "%2d,%-2d len: %-4d directions: %s\n", $r->{x}, $r->{y}, $r->{len}, $r->{directions}; |
printf "%2d,%-2d len: %-4d directions: %s %s\n", |
250 |
|
$r->{x}, $r->{y}, $r->{len}, $r->{directions}, is_symmetric($r->{directions}) ? 'symetric' : ''; |
251 |
} |
} |