KGS/Game/Tree.pm

package KGS::Game::Tree;

use KGS::Constants;

# _should_ be unified, but the two types are slightly different
# (this really looks like a grown, as opposed to designed, protocol)
# despite the claim of "innovation" etc...
my %marker_type = (
   triangle => MARK_TRIANGLE,
   square   => MARK_SQUARE,
   circle   => MARK_CIRCLE,
   small_b  => MARK_SMALL_B,
   small_w  => MARK_SMALL_W,
);

# exclusion masks... the bit on the left excludes (removes) the ones on the right
my %exclude_type = (
   &MARK_TRIANGLE => MARK_SQUARE | MARK_TRIANGLE | MARK_CIRCLE | MARK_LABEL,
   &MARK_SQUARE   => MARK_SQUARE | MARK_TRIANGLE | MARK_CIRCLE | MARK_LABEL,
   &MARK_CIRCLE   => MARK_SQUARE | MARK_TRIANGLE | MARK_CIRCLE | MARK_LABEL,
   &MARK_LABEL    => MARK_SQUARE | MARK_TRIANGLE | MARK_CIRCLE | MARK_LABEL,
   &MARK_SMALL_B  => MARK_SMALL_B | MARK_SMALL_W | MARK_B | MARK_W | MARK_MOVE,
   &MARK_SMALL_W  => MARK_SMALL_B | MARK_SMALL_W | MARK_B | MARK_W | MARK_MOVE,
   &MARK_GRAY_B   =>                               MARK_B | MARK_W | MARK_MOVE | MARK_GRAY_B | MARK_GRAY_W,
   &MARK_GRAY_W   =>                               MARK_B | MARK_W | MARK_MOVE | MARK_GRAY_B | MARK_GRAY_W,
   &MARK_B        => MARK_SMALL_B | MARK_SMALL_W | MARK_B | MARK_W | MARK_MOVE | MARK_GRAY_B | MARK_GRAY_W,
   &MARK_W        => MARK_SMALL_B | MARK_SMALL_W | MARK_B | MARK_W | MARK_MOVE | MARK_GRAY_B | MARK_GRAY_W,
);

sub init_tree {
   my ($self) = @_;
   $self->{tree} = [ { id => 0 } ];
}

sub update_tree {
   my ($self, $tree) = @_;

   my $node = $self->{curnode};

   for (@$tree)  {
      my ($type, @arg) = @$_;
      if ($type eq "add_child") {
         $node = $self->{tree}[$arg[0] + 1]
            or die "FATAL: referencing nonexistent node $arg[0]+1!";

         my $new = { parent => $node->{id}, id => scalar @{$self->{tree}} };

         push @{$self->{tree}}, $new;
         push @{$node->{children}}, $new->{id};

         $node = $new;

      } elsif (my $bit = $marker_type{$type}) {
         my $ref = $node->{"$arg[1],$arg[2]"} ||= [];

         $ref->[0] &= ~$exclude_type{$bit};
         $ref->[0] |= $bit if $arg[0] != 2;
         $ref->[1] |= $exclude_type{$bit};

      } elsif ($type eq "label") {
         my $ref = $node->{"$arg[1],$arg[2]"} ||= [];

         $ref->[0] &= ~$exclude_type{&MARK_LABEL};
         undef $ref->[2];

         if (length $arg[0]) {
            $ref->[0] |= MARK_LABEL;
            $ref->[1] |= $exclude_type{&MARK_LABEL};
            $ref->[2] = $arg[0];
         }

      } elsif ($type eq "move" or $type eq "addstone" or $type eq "gray") {
         if ($arg[1] < 255) {
            my $ref = $node->{"$arg[1],$arg[2]"} ||= [];

            my $bit = $arg[0] == 0 ? $bit | ($type eq "gray" ? MARK_GRAY_B : MARK_B)
                    : $arg[0] == 1 ? $bit | ($type eq "gray" ? MARK_GRAY_W : MARK_W)
                                   : 0;

            $ref->[0] &= ~$exclude_type{$bit};
            $ref->[0] |= $bit | ($type eq "move" ? MARK_MOVE : 0);
            $ref->[1] |= $exclude_type{$bit};

            $self->event_move (0) if $self->{loaded} & $type eq "move";
         } else {
            warn "PLEASE REPORT: pass coordiates but type is $type" if $type ne "move";#d#

            $node->{pass} = 1;

            $self->event_move (1) if $self->{loaded};
         }

      } elsif ($type eq "comment") {
         $node->{comment} .= $arg[0];

      } elsif ($type eq "player") {
         $node->{player}[$arg[0]] = $arg[1];

      } elsif ($type eq "set_timer") {
         $node->{time}[$arg[0]] = [$arg[1], $arg[2]];

      } elsif ($type eq "more") {
         $self->{more} = 1;
         $self->msg(get_tree => channel => $self->{channel}, node => @{$self->{tree}} - 1);

      } elsif ($type eq "done") {
         $self->{loaded} = 1;
         # nop

      } else {
         warn "unknown node parameter $type (@arg), ignored\n";
      }
   }

   $self->{curnode} = $node;
}

sub get_path {
   my ($self) = @_;

   my @nodes;

   my $node = $self->{curnode};

   for(;;) {
      push @nodes, $node;
      last unless $node->{parent};
      $node = $self->{tree}[$node->{parent}];
   }

   [reverse @nodes];
}

sub set_node {
   my ($self, $node) = @_;

   $self->{curnode} = $self->{tree}[$node + 1]
      or die "set_node to undefined tree node $node+1";
}

sub event_move { }
sub event_update_tree { }

1;

Revision:	1.8
Committed:	Sun Jun 1 07:56:58 2003 UTC (23 years, 4 months ago) by pcg
Branch:	MAIN
Changes since 1.7:	+1 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	package KGS::Game::Tree;
2
3			use KGS::Constants;
4
5			# _should_ be unified, but the two types are slightly different
6			# (this really looks like a grown, as opposed to designed, protocol)
7	pcg	1.6	# despite the claim of "innovation" etc...
8	pcg	1.1	my %marker_type = (
9			triangle => MARK_TRIANGLE,
10			square => MARK_SQUARE,
11			circle => MARK_CIRCLE,
12			small_b => MARK_SMALL_B,
13			small_w => MARK_SMALL_W,
14			);
15
16			# exclusion masks... the bit on the left excludes (removes) the ones on the right
17			my %exclude_type = (
18			&MARK_TRIANGLE => MARK_SQUARE \| MARK_TRIANGLE \| MARK_CIRCLE \| MARK_LABEL,
19			&MARK_SQUARE => MARK_SQUARE \| MARK_TRIANGLE \| MARK_CIRCLE \| MARK_LABEL,
20			&MARK_CIRCLE => MARK_SQUARE \| MARK_TRIANGLE \| MARK_CIRCLE \| MARK_LABEL,
21			&MARK_LABEL => MARK_SQUARE \| MARK_TRIANGLE \| MARK_CIRCLE \| MARK_LABEL,
22			&MARK_SMALL_B => MARK_SMALL_B \| MARK_SMALL_W \| MARK_B \| MARK_W \| MARK_MOVE,
23			&MARK_SMALL_W => MARK_SMALL_B \| MARK_SMALL_W \| MARK_B \| MARK_W \| MARK_MOVE,
24	pcg	1.3	&MARK_GRAY_B => MARK_B \| MARK_W \| MARK_MOVE \| MARK_GRAY_B \| MARK_GRAY_W,
25			&MARK_GRAY_W => MARK_B \| MARK_W \| MARK_MOVE \| MARK_GRAY_B \| MARK_GRAY_W,
26			&MARK_B => MARK_SMALL_B \| MARK_SMALL_W \| MARK_B \| MARK_W \| MARK_MOVE \| MARK_GRAY_B \| MARK_GRAY_W,
27			&MARK_W => MARK_SMALL_B \| MARK_SMALL_W \| MARK_B \| MARK_W \| MARK_MOVE \| MARK_GRAY_B \| MARK_GRAY_W,
28	pcg	1.1	);
29
30			sub init_tree {
31			my ($self) = @_;
32			$self->{tree} = [ { id => 0 } ];
33			}
34
35			sub update_tree {
36			my ($self, $tree) = @_;
37
38			my $node = $self->{curnode};
39
40			for (@$tree) {
41			my ($type, @arg) = @$_;
42			if ($type eq "add_child") {
43			$node = $self->{tree}[$arg[0] + 1]
44	pcg	1.3	or die "FATAL: referencing nonexistent node $arg[0]+1!";
45	pcg	1.1
46			my $new = { parent => $node->{id}, id => scalar @{$self->{tree}} };
47
48			push @{$self->{tree}}, $new;
49			push @{$node->{children}}, $new->{id};
50
51			$node = $new;
52
53			} elsif (my $bit = $marker_type{$type}) {
54	pcg	1.4	my $ref = $node->{"$arg[1],$arg[2]"} \|\|= [];
55	pcg	1.1
56	pcg	1.4	$ref->[0] &= ~$exclude_type{$bit};
57			$ref->[0] \|= $bit if $arg[0] != 2;
58			$ref->[1] \|= $exclude_type{$bit};
59	pcg	1.1
60			} elsif ($type eq "label") {
61	pcg	1.4	my $ref = $node->{"$arg[1],$arg[2]"} \|\|= [];
62	pcg	1.1
63	pcg	1.4	$ref->[0] &= ~$exclude_type{&MARK_LABEL};
64			undef $ref->[2];
65	pcg	1.1
66			if (length $arg[0]) {
67	pcg	1.4	$ref->[0] \|= MARK_LABEL;
68			$ref->[1] \|= $exclude_type{&MARK_LABEL};
69			$ref->[2] = $arg[0];
70	pcg	1.1	}
71
72	pcg	1.3	} elsif ($type eq "move" or $type eq "addstone" or $type eq "gray") {
73	pcg	1.7	if ($arg[1] < 255) {
74			my $ref = $node->{"$arg[1],$arg[2]"} \|\|= [];
75	pcg	1.4
76	pcg	1.7	my $bit = $arg[0] == 0 ? $bit \| ($type eq "gray" ? MARK_GRAY_B : MARK_B)
77			: $arg[0] == 1 ? $bit \| ($type eq "gray" ? MARK_GRAY_W : MARK_W)
78			: 0;
79	pcg	1.3
80	pcg	1.7	$ref->[0] &= ~$exclude_type{$bit};
81			$ref->[0] \|= $bit \| ($type eq "move" ? MARK_MOVE : 0);
82			$ref->[1] \|= $exclude_type{$bit};
83	pcg	1.1
84	pcg	1.7	$self->event_move (0) if $self->{loaded} & $type eq "move";
85			} else {
86			warn "PLEASE REPORT: pass coordiates but type is $type" if $type ne "move";#d#
87
88			$node->{pass} = 1;
89
90			$self->event_move (1) if $self->{loaded};
91			}
92	pcg	1.6
93	pcg	1.1	} elsif ($type eq "comment") {
94	pcg	1.3	$node->{comment} .= $arg[0];
95
96			} elsif ($type eq "player") {
97			$node->{player}[$arg[0]] = $arg[1];
98	pcg	1.1
99	pcg	1.8	} elsif ($type eq "set_timer") {
100	pcg	1.3	$node->{time}[$arg[0]] = [$arg[1], $arg[2]];
101
102			} elsif ($type eq "more") {
103			$self->{more} = 1;
104			$self->msg(get_tree => channel => $self->{channel}, node => @{$self->{tree}} - 1);
105
106			} elsif ($type eq "done") {
107			$self->{loaded} = 1;
108			# nop
109	pcg	1.2
110	pcg	1.1	} else {
111			warn "unknown node parameter $type (@arg), ignored\n";
112			}
113			}
114
115			$self->{curnode} = $node;
116			}
117
118			sub get_path {
119			my ($self) = @_;
120
121			my @nodes;
122
123			my $node = $self->{curnode};
124
125			for(;;) {
126			push @nodes, $node;
127			last unless $node->{parent};
128			$node = $self->{tree}[$node->{parent}];
129			}
130
131			[reverse @nodes];
132			}
133
134			sub set_node {
135			my ($self, $node) = @_;
136
137			$self->{curnode} = $self->{tree}[$node + 1]
138			or die "set_node to undefined tree node $node+1";
139			}
140
141	pcg	1.6	sub event_move { }
142	pcg	1.5	sub event_update_tree { }
143
144	pcg	1.1	1;
145