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Comparing Games-Go-SimpleBoard/SimpleBoard.pm (file contents):
Revision 1.5 by root, Tue Jun 24 19:22:08 2008 UTC vs.
Revision 1.16 by elmex, Tue Jul 29 10:03:52 2008 UTC

… …
14 14
15=head2 EXPORTED CONSTANTS 15=head2 EXPORTED CONSTANTS
16 16
17Marker types for each board position (ORed together): 17Marker types for each board position (ORed together):
18 18
19 MARK_TRIANGLE # triangle mark 19 MARK_TRIANGLE # triangle mark
20 MARK_SQUARE # square mark 20 MARK_SQUARE # square mark
21 MARK_CIRCLE # circle mark 21 MARK_CIRCLE # circle mark
22 MARK_CROSS # cross mark
22 MARK_SMALL_B # small stone, used for scoring or marking 23 MARK_SMALL_B # small stone, used for scoring or marking
23 MARK_SMALL_W # small stone, used for scoring or marking 24 MARK_SMALL_W # small stone, used for scoring or marking
24 MARK_B # normal black stone 25 MARK_B # normal black stone
25 MARK_W # normal whit stone 26 MARK_W # normal whit stone
26 MARK_GRAYED # in conjunction with MARK_[BW], grays the stone 27 MARK_GRAYED # in conjunction with MARK_[BW], grays the stone
28 MARK_SMALL_GRAYED # in conjunction with MARK_SMALL_[BW], grays the stone
27 MARK_LABEL # a text label 29 MARK_LABEL # a text label
28 MARK_HOSHI # this is a hoshi point (not used much) 30 MARK_HOSHI # this is a hoshi point (not used much)
29 MARK_MOVE # this is a regular move 31 MARK_MOVE # this is a regular move
30 MARK_KO # this is a ko position 32 MARK_KO # this is a ko position
31 MARK_REDRAW # ignored, can be used for your own purposes 33 MARK_REDRAW # ignored, can be used for your own purposes
32 34
33 COLOUR_BLACK # used for $board->{last} 35 COLOUR_WHITE # guarenteed to be 0
34 COLOUR_WHITE # to mark the colour of the last move 36 COLOUR_BLACK # guarenteed to be 1
35 37
36 MOVE_HANDICAP # used as "x-coordinate" for handicap moves 38 MOVE_HANDICAP # used as "x-coordinate" for handicap moves
37 MOVE_PASS # can be used as "x-coordinate" for handicap moves 39 MOVE_PASS # can be used as "x-coordinate" for pass moves
38 40
39=head2 METHODS 41=head2 METHODS
40 42
41=over 4 43=over 4
42 44
… …
51 53
52our $VERSION = '1.0'; 54our $VERSION = '1.0';
53 55
54our @EXPORT = qw( 56our @EXPORT = qw(
55 MARK_TRIANGLE MARK_SQUARE MARK_CIRCLE MARK_SMALL_B MARK_SMALL_W MARK_B 57 MARK_TRIANGLE MARK_SQUARE MARK_CIRCLE MARK_SMALL_B MARK_SMALL_W MARK_B
56 MARK_W MARK_GRAYED MARK_MOVE MARK_LABEL MARK_HOSHI MARK_KO 58 MARK_W MARK_GRAYED MARK_SMALL_GRAYED MARK_MOVE MARK_LABEL MARK_HOSHI MARK_KO MARK_CROSS
57 MARK_REDRAW 59 MARK_REDRAW
58 COLOUR_BLACK COLOUR_WHITE 60 COLOUR_BLACK COLOUR_WHITE
59 MOVE_HANDICAP MOVE_PASS 61 MOVE_HANDICAP MOVE_PASS
60); 62);
61 63
62# marker types for each board position (ORed together) 64# marker types for each board position (ORed together)
63 65
64sub MARK_TRIANGLE (){ 0x0001 } 66sub MARK_TRIANGLE (){ 0x0001 }
65sub MARK_SQUARE (){ 0x0002 } 67sub MARK_SQUARE (){ 0x0002 }
66sub MARK_CIRCLE (){ 0x0004 } 68sub MARK_CIRCLE (){ 0x0004 }
67sub MARK_SMALL_B (){ 0x0008 } # small stone, used for scoring or marking 69sub MARK_SMALL_B (){ 0x0008 } # small stone, used for scoring or marking
68sub MARK_SMALL_W (){ 0x0010 } # small stone, used for scoring or marking 70sub MARK_SMALL_W (){ 0x0010 } # small stone, used for scoring or marking
69sub MARK_B (){ 0x0020 } # normal black stone 71sub MARK_B (){ 0x0020 } # normal black stone
70sub MARK_W (){ 0x0040 } # normal whit stone 72sub MARK_W (){ 0x0040 } # normal whit stone
71sub MARK_GRAYED (){ 0x0080 } # in conjunction with MARK_[BW], grays the stone 73sub MARK_GRAYED (){ 0x0080 } # in conjunction with MARK_[BW], grays the stone
74sub MARK_SMALL_GRAYED (){ 0x0100 }
72sub MARK_LABEL (){ 0x0100 } 75sub MARK_LABEL (){ 0x0200 }
73sub MARK_HOSHI (){ 0x0200 } # this is a hoshi point (not used much) 76sub MARK_HOSHI (){ 0x0400 } # this is a hoshi point (not used much)
74sub MARK_MOVE (){ 0x0400 } # this is a regular move 77sub MARK_MOVE (){ 0x0800 } # this is a regular move
75sub MARK_KO (){ 0x0800 } # this is a ko position 78sub MARK_KO (){ 0x1000 } # this is a ko position
79sub MARK_CROSS (){ 0x2000 }
76sub MARK_REDRAW (){ 0x8000 } 80sub MARK_REDRAW (){ 0x8000 }
77 81
78sub COLOUR_BLACK (){ 0 }
79sub COLOUR_WHITE (){ 1 } 82sub COLOUR_WHITE (){ 0 }
83sub COLOUR_BLACK (){ 1 }
80 84
81sub MOVE_PASS (){ undef } 85sub MOVE_PASS (){ undef }
82sub MOVE_HANDICAP (){ -2 } 86sub MOVE_HANDICAP (){ -2 }
83 87
84=item my $board = new $size 88=item my $board = new $size
85 89
86Creates a new empty board of the given size. 90Creates a new empty board of the given size.
87 91
88C<< $board->{size} >> stores the board size. 92C<< $board->{size} >> stores the board size.
89 93
90C<< $board->{max} >> stores the maximum board coordinate (size-1). 94C<< $board->{max} >> stores the maximum board coordinate (size-1).
91 95
92C<< $board->{captures}[COLOUR] >> stores the number of captured stones for 96C<< $board->{captures}[COLOUR_xxx] >> stores the number of captured stones for
93the given colour. 97the given colour.
94
95C<< $board->{last} >> stores the colour of the last move that was played.
96 98
97C<< $board->{board} >> stores a two-dimensional array with board contents. 99C<< $board->{board} >> stores a two-dimensional array with board contents.
98 100
99=cut 101=cut
100 102
101sub new { 103sub new {
102 my $class = shift; 104 my $class = shift;
103 my $size = shift; 105 my $size = shift;
106
107 unless ($size > 0) {
108 Carp::croak ("no board size given!");
109 }
110
104 bless { 111 bless {
105 max => $size - 1, 112 max => $size - 1,
106 size => $size, 113 size => $size,
107 board => [map [(0) x $size], 1 .. $size], 114 board => [map [(0) x $size], 1 .. $size],
108 captures => [0, 0], # captures 115 captures => [0, 0], # captures
109 #timer => [], 116 #timer => [],
110 #score => [], 117 #score => [],
111 #last => COLOUR_...,
112 @_
113 }, 118 @_,
114 $class; 119 }, $class
115} 120}
116 121
117# inefficient and primitive, I hear you say? 122# inefficient and primitive, I hear you say?
118# well... you are right :) 123# well... you are right :)
119# use an extremely dumb floodfill algorithm to get rid of captured stones 124# use an extremely dumb floodfill algorithm to get rid of captured stones
… …
127 132
128 my $max = $self->{max}; 133 my $max = $self->{max};
129 134
130 while (@nodes) { 135 while (@nodes) {
131 my ($x, $y) = @{pop @nodes}; 136 my ($x, $y) = @{pop @nodes};
137
132 unless ($seen{$x,$y}++) { 138 unless ($seen{$x,$y}++) {
133 if ($board->[$x][$y] & $mark) { 139 if ($board->[$x][$y] & $mark) {
134 push @found, [$x, $y]; 140 push @found, [$x, $y];
135 141
136 push @nodes, [$x-1, $y] unless $seen{$x-1, $y} || $x <= 0; 142 push @nodes, [$x-1, $y] unless $seen{$x-1, $y} || $x <= 0;
… …
159specified in C<$clr>, then setting bits specified in C<$set>. 165specified in C<$clr>, then setting bits specified in C<$set>.
160 166
161If C<$set> includes C<MARK_LABEL>, the label text must be given in 167If C<$set> includes C<MARK_LABEL>, the label text must be given in
162C<$label>. 168C<$label>.
163 169
164If C<$set> contains C<MARK_MOVE>, then a circle symbol will be placed 170If C<$set> contains C<MARK_MOVE> then surrounded stones will be removed
165at this coordinate. Also, surrounded stones will be removed from the
166board and (simple) Kos are detected and marked with square symbols and 171from the board and (simple) Kos are detected and marked with square
167C<MARK_KO>. The circle and square markings are removed with the next 172symbols and C<MARK_KO>, after removing other marking symbols. The
173markings are also removed with the next next update structure that uses
168update that uses C<MARK_MOVE>, so this flag is suited well for marking, 174C<MARK_MOVE>, so this flag is suited well for marking, well, moves. Note
169well, moves. Note that you can make invalid "moves" (such as suicide) and 175that you can make invalid "moves" (such as suicide) and C<update> will
170C<update> will try to cope with it. You can use C<is_valid_move> to avoid 176try to cope with it. You can use C<is_valid_move> to avoid making illegal
171making illegal moves. 177moves.
172 178
173For handicap "moves", currently only board sizes 9, 13 and 19 are 179For handicap "moves", currently only board sizes 9, 13 and 19 are
174supported and only handicap values from 2 to 9. The placement follows the 180supported and only handicap values from 2 to 9. The placement follows the
175IGS rules, if you want other placements, you have to set it up yourself. 181IGS rules, if you want other placements, you have to set it up yourself.
176 182
… …
209 7 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,1)], 215 7 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,1)],
210 8 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,0 1,2 )], 216 8 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,0 1,2 )],
211 9 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,0 1,2 1,1)], 217 9 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,0 1,2 1,1)],
212); 218);
213 219
220our $mark_symbols = MARK_CIRCLE | MARK_SQUARE | MARK_TRIANGLE | MARK_CROSS | MARK_KO;
221
214sub update { 222sub update {
215 my ($self, $path) = @_; 223 my ($self, $path) = @_;
216 224
217 my $board = $self->{board}; 225 my $board = $self->{board};
218 226
219 for (@$path) { 227 for (@$path) {
220 my ($x, $y, $clr, $set, $label) = @$_; 228 my ($x, $y, $clr, $set, $label) = @$_;
221 229
222 my $nodemask =
223 $_ == $path->[-1]
224 ? ~0
225 : ~(MARK_SQUARE | MARK_TRIANGLE | MARK_CIRCLE | MARK_LABEL | MARK_KO);
226
227 if (!defined $x) { 230 if (!defined $x) {
231 $$_ &= ~$mark_symbols for @{ delete $self->{unmark} || [] };
228 # pass 232 # pass
229 $self->{last} = $set & MARK_B ? COLOUR_BLACK : COLOUR_WHITE;
230 233
231 } elsif ($x == MOVE_HANDICAP) { 234 } elsif ($x == MOVE_HANDICAP) {
235 $$_ &= ~$mark_symbols for @{ delete $self->{unmark} || [] };
236
232 # $y = #handicap stones 237 # $y = #handicap stones
233 my $c = $HANDICAP_COORD{$self->{size}} 238 my $c = $HANDICAP_COORD{$self->{size}}
234 or Carp::croak "$self->{size}: illegal board size for handicap"; 239 or Carp::croak "$self->{size}: illegal board size for handicap";
235 my $h = $HANDICAP_XY{$y} 240 my $h = $HANDICAP_XY{$y}
236 or Carp::croak "$y: illegal number of handicap stones"; 241 or Carp::croak "$y: illegal number of handicap stones";
… …
239 my ($x, $y) = map $c->[$_], split /,/; 244 my ($x, $y) = map $c->[$_], split /,/;
240 $board->[$x][$y] = MARK_B | MARK_MOVE; 245 $board->[$x][$y] = MARK_B | MARK_MOVE;
241 } 246 }
242 247
243 } else { 248 } else {
244 $board->[$x][$y] = 249 my $space = \$board->[$x][$y];
245 $board->[$x][$y] 250
246 & ~$clr 251 $$space = $$space & ~$clr | $set;
247 | $set
248 & $nodemask;
249 252
250 $self->{label}[$x][$y] = $label if $set & MARK_LABEL; 253 $self->{label}[$x][$y] = $label if $set & MARK_LABEL;
251 254
252 if ($set & MARK_MOVE) { 255 if ($set & MARK_MOVE) {
253 $self->{last} = $set & MARK_B ? COLOUR_BLACK : COLOUR_WHITE; 256 $$_ &= ~$mark_symbols for @{ $self->{unmark} || [] };
257 @{ $self->{unmark} } = $space;
258
259 # remark the space, in case the move was on the same spot as the
260 # old mark
261 $$space |= $set;
254 262
255 unless (${ $_->[5] ||= \my $hint }) { 263 unless (${ $_->[5] ||= \my $hint }) {
256 my ($own, $opp) = 264 my ($own, $opp) =
257 $set & MARK_B 265 $set & MARK_B
258 ? (MARK_B, MARK_W) 266 ? (MARK_B, MARK_W)
259 : (MARK_W, MARK_B); 267 : (MARK_W, MARK_B);
260 268
261 my (@capture, $suicide); 269 my (@capture, @suicide);
262 270
263 push @capture, $self->capture ($opp, $x-1, $y) if $x > 0 && $board->[$x-1][$y] & $opp; 271 push @capture, $self->capture ($opp, $x-1, $y) if $x > 0 && $board->[$x-1][$y] & $opp;
264 push @capture, $self->capture ($opp, $x+1, $y) if $x < $self->{max} && $board->[$x+1][$y] & $opp; 272 push @capture, $self->capture ($opp, $x+1, $y) if $x < $self->{max} && $board->[$x+1][$y] & $opp;
265 push @capture, $self->capture ($opp, $x, $y-1) if $y > 0 && $board->[$x][$y-1] & $opp; 273 push @capture, $self->capture ($opp, $x, $y-1) if $y > 0 && $board->[$x][$y-1] & $opp;
266 push @capture, $self->capture ($opp, $x, $y+1) if $y < $self->{max} && $board->[$x][$y+1] & $opp; 274 push @capture, $self->capture ($opp, $x, $y+1) if $y < $self->{max} && $board->[$x][$y+1] & $opp;
267 275
268 # keep only unique coordinates 276 # keep only unique coordinates
269 @capture = do { my %seen; grep !$seen{"$_->[0],$_->[1]"}++, @capture }; 277 @capture = do { my %seen; grep !$seen{"$_->[0],$_->[1]"}++, @capture };
270 278
271 # remove captured stones 279 # remove captured stones
272 $self->{captures}[$self->{last}] += @capture; 280 $self->{captures}[$own == MARK_B ? COLOUR_BLACK : COLOUR_WHITE] += @capture;
273 $self->{board}[$_->[0]][$_->[1]] &= ~(MARK_B | MARK_W | MARK_MOVE) 281 $self->{board}[$_->[0]][$_->[1]] = 0
274 for @capture; 282 for @capture;
275 283
276 $suicide += $self->capture ($own, $x, $y); 284 push @suicide, $self->capture ($own, $x, $y);
277 285
278 ${ $_->[5] } ||= !(@capture || $suicide); 286 ${ $_->[5] } ||= !(@capture || @suicide);
279 287
288 if (@suicide) {
289 $self->{board}[$_->[0]][$_->[1]] = 0
290 for @suicide;
291 # count suicides as other sides stones
292 $self->{captures}[$opp == MARK_B ? COLOUR_BLACK : COLOUR_WHITE] += @suicide;
293
280 if (!$suicide && @capture == 1) { 294 } elsif (!@suicide && @capture == 1) {
281 # possible ko. now check liberties on placed stone 295 # possible ko. now check liberties on placed stone
282 296
283 my $libs; 297 my $libs;
284 298
285 $libs++ if $x > 0 && !($board->[$x-1][$y] & $opp); 299 $libs++ if $x > 0 && !($board->[$x-1][$y] & $opp);
286 $libs++ if $x < $self->{max} && !($board->[$x+1][$y] & $opp); 300 $libs++ if $x < $self->{max} && !($board->[$x+1][$y] & $opp);
287 $libs++ if $y > 0 && !($board->[$x][$y-1] & $opp); 301 $libs++ if $y > 0 && !($board->[$x][$y-1] & $opp);
288 $libs++ if $y < $self->{max} && !($board->[$x][$y+1] & $opp); 302 $libs++ if $y < $self->{max} && !($board->[$x][$y+1] & $opp);
289 303
290 if ($libs == 1) { 304 if ($libs == 1) {
291 $board->[$x][$y] = $board->[$x][$y] & ~MARK_CIRCLE | (MARK_KO & $nodemask); 305 $$space = $$space & ~$mark_symbols | MARK_KO;
306
292 ($x, $y) = @{$capture[0]}; 307 ($x, $y) = @{$capture[0]};
293 $board->[$x][$y] |= MARK_KO & $nodemask; 308 $board->[$x][$y] |= MARK_KO;
309
310 push @{ $self->{unmark} }, \$board->[$x][$y];
294 } 311 }
295 } 312 }
296 } 313 }
297 } 314 }
298 } 315 }
… …
311sub is_valid_move { 328sub is_valid_move {
312 my ($self, $colour, $x, $y, $may_suicide) = @_; 329 my ($self, $colour, $x, $y, $may_suicide) = @_;
313 330
314 my $board = $self->{board}; 331 my $board = $self->{board};
315 332
316 return if $board->[$x][$y] & (MARK_B | MARK_W | MARK_KO); 333 return if $board->[$x][$y] & (MARK_B | MARK_W | MARK_KO)
334 && !($board->[$x][$y] & MARK_GRAYED);
317 335
318 if ($may_suicide) { 336 if ($may_suicide) {
319 return 1; 337 return 1;
320 } else { 338 } else {
321 my ($own, $opp) = $colour == COLOUR_BLACK 339 my ($own, $opp) = $colour == COLOUR_BLACK

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