… | |
… | |
14 | |
14 | |
15 | =head2 EXPORTED CONSTANTS |
15 | =head2 EXPORTED CONSTANTS |
16 | |
16 | |
17 | Marker types for each board position (ORed together): |
17 | Marker types for each board position (ORed together): |
18 | |
18 | |
19 | MARK_TRIANGLE # triangle mark |
|
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20 | MARK_SQUARE # square mark |
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21 | MARK_CIRCLE # circle mark |
|
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22 | MARK_SMALL_B # small stone, used for scoring or marking |
|
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23 | MARK_SMALL_W # small stone, used for scoring or marking |
|
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24 | MARK_B # normal black stone |
19 | MARK_B # normal black stone |
25 | MARK_W # normal whit stone |
20 | MARK_W # normal whit stone |
26 | MARK_GRAYED # in conjunction with MARK_[BW], grays the stone |
21 | MARK_GRAYED # in conjunction with MARK_[BW], grays the stone |
|
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22 | |
|
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23 | MARK_SMALL_B # small stone, used for scoring or marking |
|
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24 | MARK_SMALL_W # small stone, used for scoring or marking |
|
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25 | MARK_SMALL_GRAYED # in conjunction with MARK_SMALL_[BW], grays the stone |
|
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26 | |
|
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27 | MARK_TRIANGLE # triangle mark |
|
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28 | MARK_SQUARE # square mark |
|
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29 | MARK_CIRCLE # circle mark |
|
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30 | MARK_CROSS # cross mark |
|
|
31 | |
27 | MARK_LABEL # a text label |
32 | MARK_LABEL # a text label |
28 | MARK_HOSHI # this is a hoshi point (not used much) |
33 | MARK_HOSHI # this is a hoshi point (not used much) |
29 | MARK_MOVE # this is a regular move |
34 | MARK_MOVE # this is a regular move |
30 | MARK_KO # this is a ko position |
35 | MARK_KO # this is a ko position |
31 | MARK_REDRAW # ignored, can be used for your own purposes |
36 | MARK_REDRAW # ignored, can be used for your own purposes |
32 | |
37 | |
33 | COLOUR_BLACK # used for $board->{last} |
38 | COLOUR_WHITE # guaranteed to be 0 |
34 | COLOUR_WHITE # to mark the colour of the last move |
39 | COLOUR_BLACK # guaranteed to be 1 |
|
|
40 | |
|
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41 | MOVE_HANDICAP # used as "x-coordinate" for handicap moves |
|
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42 | MOVE_PASS # can be used as "x-coordinate" for pass moves |
35 | |
43 | |
36 | =head2 METHODS |
44 | =head2 METHODS |
37 | |
45 | |
38 | =over 4 |
46 | =over 4 |
39 | |
47 | |
40 | =cut |
48 | =cut |
41 | |
49 | |
|
|
50 | no warnings; |
|
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51 | use strict; |
|
|
52 | |
|
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53 | use Carp (); |
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|
54 | |
42 | use base Exporter; |
55 | use base Exporter::; |
43 | |
56 | |
44 | our $VERSION = '1.0'; |
57 | our $VERSION = '1.01'; |
45 | |
58 | |
46 | @EXPORT = qw( |
59 | our @EXPORT = qw( |
47 | MARK_TRIANGLE MARK_SQUARE MARK_CIRCLE MARK_SMALL_B MARK_SMALL_W MARK_B |
60 | MARK_TRIANGLE MARK_SQUARE MARK_CIRCLE MARK_SMALL_B MARK_SMALL_W MARK_B |
48 | MARK_W MARK_GRAYED MARK_MOVE MARK_LABEL MARK_HOSHI MARK_KO |
61 | MARK_W MARK_GRAYED MARK_SMALL_GRAYED MARK_MOVE MARK_LABEL MARK_HOSHI MARK_KO MARK_CROSS |
49 | MARK_REDRAW |
62 | MARK_REDRAW |
50 | COLOUR_BLACK COLOUR_WHITE |
63 | COLOUR_BLACK COLOUR_WHITE |
|
|
64 | MOVE_HANDICAP MOVE_PASS |
51 | ); |
65 | ); |
52 | |
66 | |
53 | # marker types for each board position (ORed together) |
67 | # marker types for each board position (ORed together) |
54 | |
68 | |
55 | sub MARK_TRIANGLE (){ 0x0001 } |
69 | sub MARK_TRIANGLE (){ 0x0001 } |
56 | sub MARK_SQUARE (){ 0x0002 } |
70 | sub MARK_SQUARE (){ 0x0002 } |
57 | sub MARK_CIRCLE (){ 0x0004 } |
71 | sub MARK_CIRCLE (){ 0x0004 } |
|
|
72 | sub MARK_CROSS (){ 0x0008 } |
|
|
73 | |
58 | sub MARK_SMALL_B (){ 0x0008 } # small stone, used for scoring or marking |
74 | sub MARK_SMALL_B (){ 0x0010 } # small stone, used for scoring or marking |
59 | sub MARK_SMALL_W (){ 0x0010 } # small stone, used for scoring or marking |
75 | sub MARK_SMALL_W (){ 0x0020 } # small stone, used for scoring or marking |
|
|
76 | sub MARK_SMALL_GRAYED (){ 0x0040 } |
|
|
77 | |
60 | sub MARK_B (){ 0x0020 } # normal black stone |
78 | sub MARK_B (){ 0x0080 } # normal black stone |
61 | sub MARK_W (){ 0x0040 } # normal whit stone |
79 | sub MARK_W (){ 0x0100 } # normal whit stone |
62 | sub MARK_GRAYED (){ 0x0080 } # in conjunction with MARK_[BW], grays the stone |
80 | sub MARK_GRAYED (){ 0x0200 } # in conjunction with MARK_[BW], grays the stone |
|
|
81 | |
63 | sub MARK_LABEL (){ 0x0100 } |
82 | sub MARK_LABEL (){ 0x0400 } |
64 | sub MARK_HOSHI (){ 0x0200 } # this is a hoshi point (not used much) |
83 | sub MARK_HOSHI (){ 0x0800 } # this is a hoshi point (not used much) |
65 | sub MARK_MOVE (){ 0x0400 } # this is a regular move |
84 | sub MARK_MOVE (){ 0x1000 } # this is a regular move |
66 | sub MARK_KO (){ 0x0800 } # this is a ko position |
85 | sub MARK_KO (){ 0x2000 } # this is a ko position |
67 | sub MARK_REDRAW (){ 0x8000 } |
86 | sub MARK_REDRAW (){ 0x8000 } |
68 | |
87 | |
69 | sub COLOUR_BLACK (){ 0 } |
|
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70 | sub COLOUR_WHITE (){ 1 } |
88 | sub COLOUR_WHITE (){ 0 } |
|
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89 | sub COLOUR_BLACK (){ 1 } |
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90 | |
|
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91 | sub MOVE_PASS (){ undef } |
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92 | sub MOVE_HANDICAP (){ -2 } |
71 | |
93 | |
72 | =item my $board = new $size |
94 | =item my $board = new $size |
73 | |
95 | |
74 | Creates a new empty board of the given size. |
96 | Creates a new empty board of the given size. |
75 | |
97 | |
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|
98 | C<< $board->{size} >> stores the board size. |
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99 | |
76 | C<< $board->{max} >> stores the maximum board coordinate (size-1). |
100 | C<< $board->{max} >> stores the maximum board coordinate (size-1). |
77 | |
101 | |
78 | C<< $board->{captures}[COLOUR] >> stores the number of captured stones for |
102 | C<< $board->{captures}[COLOUR_xxx] >> stores the number of captured stones for |
79 | the given colour. |
103 | the given colour. |
80 | |
|
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81 | C<< $board->{last} >> stores the colour of the last move that was played. |
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82 | |
104 | |
83 | C<< $board->{board} >> stores a two-dimensional array with board contents. |
105 | C<< $board->{board} >> stores a two-dimensional array with board contents. |
84 | |
106 | |
85 | =cut |
107 | =cut |
86 | |
108 | |
87 | sub new { |
109 | sub new { |
88 | my $class = shift; |
110 | my $class = shift; |
89 | my $size = shift; |
111 | my $size = shift; |
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112 | |
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113 | unless ($size > 0) { |
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114 | Carp::croak ("no board size given!"); |
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115 | } |
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116 | |
90 | bless { |
117 | bless { |
91 | max => $size - 1, |
118 | max => $size - 1, |
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119 | size => $size, |
92 | board => [map [(0) x $size], 1 .. $size], |
120 | board => [map [(0) x $size], 1 .. $size], |
93 | captures => [0, 0], # captures |
121 | captures => [0, 0], # captures |
94 | #timer => [], |
122 | #timer => [], |
95 | #score => [], |
123 | #score => [], |
96 | #last => COLOUR_..., |
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97 | @_ |
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98 | }, |
124 | @_, |
99 | $class; |
125 | }, $class |
100 | } |
126 | } |
101 | |
127 | |
102 | # inefficient and primitive, I hear you say? |
128 | # inefficient and primitive, I hear you say? |
103 | # well... you are right :) |
129 | # well... you are right :) |
104 | # use an extremely dumb floodfill algorithm to get rid of captured stones |
130 | # use an extremely dumb floodfill algorithm to get rid of captured stones |
… | |
… | |
112 | |
138 | |
113 | my $max = $self->{max}; |
139 | my $max = $self->{max}; |
114 | |
140 | |
115 | while (@nodes) { |
141 | while (@nodes) { |
116 | my ($x, $y) = @{pop @nodes}; |
142 | my ($x, $y) = @{pop @nodes}; |
|
|
143 | |
117 | unless ($seen{$x,$y}++) { |
144 | unless ($seen{$x,$y}++) { |
118 | if ($board->[$x][$y] & $mark) { |
145 | if ($board->[$x][$y] & $mark) { |
119 | push @found, [$x, $y]; |
146 | push @found, [$x, $y]; |
120 | |
147 | |
121 | push @nodes, [$x-1, $y] unless $seen{$x-1, $y} || $x <= 0; |
148 | push @nodes, [$x-1, $y] unless $seen{$x-1, $y} || $x <= 0; |
… | |
… | |
134 | =item $hint = $board->update ([update-structures...]) |
161 | =item $hint = $board->update ([update-structures...]) |
135 | |
162 | |
136 | Each update-structure itself is also an array-ref: |
163 | Each update-structure itself is also an array-ref: |
137 | |
164 | |
138 | [$x, $y, $clr, $set, $label, $hint] # update or move |
165 | [$x, $y, $clr, $set, $label, $hint] # update or move |
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166 | [MOVE_HANDICAP, $handicap] # black move, setup handicap |
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167 | [MOVE_PASS] # pass |
139 | [] # pass |
168 | [] # also pass (deprecated!) |
140 | |
169 | |
141 | It changes the board or executes a move, by first clearing the bits |
170 | It changes the board or executes a move, by first clearing the bits |
142 | specified in C<$clr>, then setting bits specified in C<$set>. |
171 | specified in C<$clr>, then setting bits specified in C<$set>. |
143 | |
172 | |
144 | If C<$set> includes C<MARK_LABEL>, the label text must be given in |
173 | If C<$set> includes C<MARK_LABEL>, the label text must be given in |
145 | C<$label>. |
174 | C<$label>. |
146 | |
175 | |
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176 | If C<$set> contains C<MARK_MOVE> then surrounded stones will be removed |
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177 | from the board and (simple) Kos are detected and marked with square |
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178 | symbols and C<MARK_KO>, after removing other marking symbols. The |
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179 | markings are also removed with the next next update structure that uses |
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180 | C<MARK_MOVE>, so this flag is suited well for marking, well, moves. Note |
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181 | that you can make invalid "moves" (such as suicide) and C<update> will |
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182 | try to cope with it. You can use C<is_valid_move> to avoid making illegal |
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183 | moves. |
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184 | |
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185 | For handicap "moves", currently only board sizes 9, 13 and 19 are |
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186 | supported and only handicap values from 2 to 9. The placement follows the |
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187 | IGS rules, if you want other placements, you have to set it up yourself. |
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188 | |
147 | This function modifies the hint member of the specified path to speed up |
189 | This function modifies the C<$hint> member of the specified structure |
148 | repeated board generation and updates with the same update structures. |
190 | to speed up repeated board generation and updates with the same update |
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191 | structures. |
149 | |
192 | |
150 | If the hint member is a reference the scalar pointed to by the reference |
193 | If the hint member is a reference the scalar pointed to by the reference |
151 | is updated instead. |
194 | is updated instead. |
152 | |
195 | |
153 | If all this hint member thing is unclear, just ignore it and specify it |
196 | If all this hint member thing is confusing, just ignore it and specify |
154 | as C<undef> or leave it out of the array entirely. Do make sure that you |
197 | it as C<undef> or leave it out of the array entirely. Do make sure that |
155 | keep your update structures around, however, as regenerating a full board |
198 | you keep your update structures around as long as previous updates don't |
156 | position from hinted update structures is I<much> faster then recreating |
199 | change, however, as regenerating a full board position from hinted |
157 | it from fresh update structures. |
200 | update structures is I<much> faster then recreating it from fresh update |
|
|
201 | structures. |
158 | |
202 | |
159 | Example, make two silly moves: |
203 | Example, make two silly moves: |
160 | |
204 | |
161 | $board->update ([[0, 18, -1, MARK_B|MARK_MOVE], |
205 | $board->update ([[0, 18, -1, MARK_B | MARK_MOVE], |
162 | [0, 17, -1, MARK_W|MARK_MOVE]); |
206 | [0, 17, -1, MARK_W | MARK_MOVE]]); |
163 | |
207 | |
164 | =cut |
208 | =cut |
|
|
209 | |
|
|
210 | our %HANDICAP_COORD = ( |
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211 | 9 => [2, 4, 6], |
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212 | 13 => [3, 6, 9], |
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213 | 19 => [3, 9, 15], |
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214 | ); |
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215 | our %HANDICAP_XY = ( |
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216 | 2 => [qw(0,2 2,0 )], |
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217 | 3 => [qw(0,2 2,0 0,0 )], |
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218 | 4 => [qw(0,2 2,0 0,0 2,2 )], |
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219 | 5 => [qw(0,2 2,0 0,0 2,2 1,1)], |
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220 | 6 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 )], |
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221 | 7 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,1)], |
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222 | 8 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,0 1,2 )], |
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223 | 9 => [qw(0,2 2,0 0,0 2,2 0,1 2,1 1,0 1,2 1,1)], |
|
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224 | ); |
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|
225 | |
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226 | our $mark_symbols = MARK_CIRCLE | MARK_SQUARE | MARK_TRIANGLE | MARK_CROSS | MARK_KO; |
165 | |
227 | |
166 | sub update { |
228 | sub update { |
167 | my ($self, $path) = @_; |
229 | my ($self, $path) = @_; |
168 | |
230 | |
169 | my $board = $self->{board}; |
231 | my $board = $self->{board}; |
170 | |
232 | |
171 | for (@$path) { |
233 | for (@$path) { |
172 | my ($x, $y, $clr, $set, $label) = @$_; |
234 | my ($x, $y, $clr, $set, $label) = @$_; |
173 | |
235 | |
174 | my $nodemask = |
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175 | $_ == $path->[-1] |
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176 | ? ~0 |
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177 | : ~(MARK_SQUARE | MARK_TRIANGLE | MARK_CIRCLE | MARK_LABEL | MARK_KO); |
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|
178 | |
|
|
179 | if (defined $x) { |
236 | if (!defined $x) { |
|
|
237 | $$_ &= ~$mark_symbols for @{ delete $self->{unmark} || [] }; |
|
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238 | # pass |
|
|
239 | |
|
|
240 | } elsif ($x == MOVE_HANDICAP) { |
|
|
241 | $$_ &= ~$mark_symbols for @{ delete $self->{unmark} || [] }; |
|
|
242 | |
|
|
243 | # $y = #handicap stones |
|
|
244 | my $c = $HANDICAP_COORD{$self->{size}} |
|
|
245 | or Carp::croak "$self->{size}: illegal board size for handicap"; |
|
|
246 | my $h = $HANDICAP_XY{$y} |
|
|
247 | or Carp::croak "$y: illegal number of handicap stones"; |
|
|
248 | |
|
|
249 | for (@$h) { |
|
|
250 | my ($x, $y) = map $c->[$_], split /,/; |
|
|
251 | $board->[$x][$y] = MARK_B | MARK_MOVE; |
|
|
252 | } |
|
|
253 | |
|
|
254 | } else { |
180 | $board->[$x][$y] = |
255 | my $space = \$board->[$x][$y]; |
181 | $board->[$x][$y] |
256 | |
182 | & ~$clr |
257 | $$space = $$space & ~$clr | $set; |
183 | | $set |
|
|
184 | & $nodemask; |
|
|
185 | |
258 | |
186 | $self->{label}[$x][$y] = $label if $set & MARK_LABEL; |
259 | $self->{label}[$x][$y] = $label if $set & MARK_LABEL; |
187 | |
260 | |
188 | if ($set & MARK_MOVE) { |
261 | if ($set & MARK_MOVE) { |
189 | $self->{last} = $set & MARK_B ? COLOUR_BLACK : COLOUR_WHITE; |
262 | $$_ &= ~$mark_symbols for @{ $self->{unmark} || [] }; |
|
|
263 | @{ $self->{unmark} } = $space; |
|
|
264 | |
|
|
265 | # remark the space, in case the move was on the same spot as the |
|
|
266 | # old mark |
|
|
267 | $$space |= $set; |
190 | |
268 | |
191 | unless (${ $_->[5] ||= \my $hint }) { |
269 | unless (${ $_->[5] ||= \my $hint }) { |
192 | my ($own, $opp) = |
270 | my ($own, $opp) = |
193 | $set & MARK_B |
271 | $set & MARK_B |
194 | ? (MARK_B, MARK_W) |
272 | ? (MARK_B, MARK_W) |
195 | : (MARK_W, MARK_B); |
273 | : (MARK_W, MARK_B); |
196 | |
274 | |
197 | my (@capture, $suicide); |
275 | my (@capture, @suicide); |
198 | |
276 | |
199 | push @capture, $self->capture ($opp, $x-1, $y) if $x > 0 && $board->[$x-1][$y] & $opp; |
277 | push @capture, $self->capture ($opp, $x-1, $y) if $x > 0 && $board->[$x-1][$y] & $opp; |
200 | push @capture, $self->capture ($opp, $x+1, $y) if $x < $self->{max} && $board->[$x+1][$y] & $opp; |
278 | push @capture, $self->capture ($opp, $x+1, $y) if $x < $self->{max} && $board->[$x+1][$y] & $opp; |
201 | push @capture, $self->capture ($opp, $x, $y-1) if $y > 0 && $board->[$x][$y-1] & $opp; |
279 | push @capture, $self->capture ($opp, $x, $y-1) if $y > 0 && $board->[$x][$y-1] & $opp; |
202 | push @capture, $self->capture ($opp, $x, $y+1) if $y < $self->{max} && $board->[$x][$y+1] & $opp; |
280 | push @capture, $self->capture ($opp, $x, $y+1) if $y < $self->{max} && $board->[$x][$y+1] & $opp; |
203 | |
281 | |
204 | # keep only unique coordinates |
282 | # keep only unique coordinates |
205 | @capture = do { my %seen; grep !$seen{"$_->[0],$_->[1]"}++, @capture }; |
283 | @capture = do { my %seen; grep !$seen{"$_->[0],$_->[1]"}++, @capture }; |
206 | |
284 | |
207 | # remove captured stones |
285 | # remove captured stones |
208 | $self->{captures}[$self->{last}] += @capture; |
286 | $self->{captures}[$own == MARK_B ? COLOUR_BLACK : COLOUR_WHITE] += @capture; |
209 | $self->{board}[$_->[0]][$_->[1]] &= ~(MARK_B | MARK_W | MARK_MOVE) |
287 | $self->{board}[$_->[0]][$_->[1]] = 0 |
210 | for @capture; |
288 | for @capture; |
211 | |
289 | |
212 | $suicide += $self->capture ($own, $x, $y); |
290 | push @suicide, $self->capture ($own, $x, $y); |
213 | |
291 | |
214 | ${ $_->[5] } ||= !(@capture || $suicide); |
292 | ${ $_->[5] } ||= !(@capture || @suicide); |
215 | |
293 | |
|
|
294 | if (@suicide) { |
|
|
295 | $self->{board}[$_->[0]][$_->[1]] = 0 |
|
|
296 | for @suicide; |
|
|
297 | # count suicides as other sides stones |
|
|
298 | $self->{captures}[$opp == MARK_B ? COLOUR_BLACK : COLOUR_WHITE] += @suicide; |
|
|
299 | |
216 | if (!$suicide && @capture == 1) { |
300 | } elsif (!@suicide && @capture == 1) { |
217 | # possible ko. now check liberties on placed stone |
301 | # possible ko. now check liberties on placed stone |
218 | |
302 | |
219 | my $libs; |
303 | my $libs; |
220 | |
304 | |
221 | $libs++ if $x > 0 && !($board->[$x-1][$y] & $opp); |
305 | $libs++ if $x > 0 && !($board->[$x-1][$y] & $opp); |
222 | $libs++ if $x < $self->{max} && !($board->[$x+1][$y] & $opp); |
306 | $libs++ if $x < $self->{max} && !($board->[$x+1][$y] & $opp); |
223 | $libs++ if $y > 0 && !($board->[$x][$y-1] & $opp); |
307 | $libs++ if $y > 0 && !($board->[$x][$y-1] & $opp); |
224 | $libs++ if $y < $self->{max} && !($board->[$x][$y+1] & $opp); |
308 | $libs++ if $y < $self->{max} && !($board->[$x][$y+1] & $opp); |
225 | |
309 | |
226 | if ($libs == 1) { |
310 | if ($libs == 1) { |
227 | $board->[$x][$y] = $board->[$x][$y] & ~MARK_CIRCLE | (MARK_KO & $nodemask); |
311 | $$space = $$space & ~$mark_symbols | MARK_KO; |
|
|
312 | |
228 | ($x, $y) = @{$capture[0]}; |
313 | ($x, $y) = @{$capture[0]}; |
229 | $board->[$x][$y] |= MARK_KO & $nodemask; |
314 | $board->[$x][$y] |= MARK_KO; |
|
|
315 | |
|
|
316 | push @{ $self->{unmark} }, \$board->[$x][$y]; |
230 | } |
317 | } |
231 | } |
318 | } |
232 | } |
319 | } |
233 | } |
320 | } |
234 | } else { |
|
|
235 | $self->{last} = $set & MARK_B ? COLOUR_BLACK : COLOUR_WHITE; |
|
|
236 | } |
321 | } |
237 | } |
322 | } |
238 | } |
323 | } |
239 | |
324 | |
240 | =item $board->is_valid_move ($colour, $x, $y[, $may_suicide]) |
325 | =item $board->is_valid_move ($colour, $x, $y[, $may_suicide]) |
241 | |
326 | |
242 | Returns true if the move of the given colour on the given coordinates is |
327 | Returns true if the move of the given colour on the given coordinates is |
243 | valid or not. |
328 | valid or not. Kos are taken into account as long as they are marked with |
|
|
329 | C<MARK_KO>. Suicides are invalid unless C<$may_suicide> is true (e.g. for |
|
|
330 | new zealand rules) |
244 | |
331 | |
245 | =cut |
332 | =cut |
246 | |
333 | |
247 | sub is_valid_move { |
334 | sub is_valid_move { |
248 | my ($self, $colour, $x, $y, $may_suicide) = @_; |
335 | my ($self, $colour, $x, $y, $may_suicide) = @_; |
249 | |
336 | |
250 | my $board = $self->{board}; |
337 | my $board = $self->{board}; |
251 | |
338 | |
252 | return if $board->[$x][$y] & (MARK_B | MARK_W | MARK_KO); |
339 | return if $board->[$x][$y] & (MARK_B | MARK_W | MARK_KO) |
|
|
340 | && !($board->[$x][$y] & MARK_GRAYED); |
253 | |
341 | |
254 | if ($may_suicide) { |
342 | if ($may_suicide) { |
255 | return 1; |
343 | return 1; |
256 | } else { |
344 | } else { |
257 | my ($own, $opp) = $colour == COLOUR_BLACK |
345 | my ($own, $opp) = $colour == COLOUR_BLACK |
… | |
… | |
278 | |
366 | |
279 | Marc Lehmann <schmorp@schmorp.de> |
367 | Marc Lehmann <schmorp@schmorp.de> |
280 | |
368 | |
281 | =head2 SEE ALSO |
369 | =head2 SEE ALSO |
282 | |
370 | |
283 | L<KGS::Protocol>, L<KGS::Game::Tree>, L<Gtk2::GoBoard>. |
371 | L<Gtk2::GoBoard>. |
284 | |
372 | |
285 | =cut |
373 | =cut |
286 | |
374 | |