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dungeon.pl
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dungeon.pl
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#!/usr/bin/perl
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# dungeon.pl
#
# Random Dungeon Generator by drow
# http://donjon.bin.sh/
#
# This code is provided under the
# Creative Commons Attribution-NonCommercial 3.0 Unported License
# http://creativecommons.org/licenses/by-nc/3.0/
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# use perl
use strict;
use lib '/usr/local/lib/perl5';
use GD;
GD::Image->trueColor(1);
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# configuration
my $dungeon_layout = {
'Box' => [[1,1,1],[1,0,1],[1,1,1]],
'Cross' => [[0,1,0],[1,1,1],[0,1,0]],
};
my $corridor_layout = {
'Labyrinth' => 0,
'Bent' => 50,
'Straight' => 100,
};
my $map_style = {
'Standard' => {
'fill' => '000000',
'open' => 'FFFFFF',
'open_grid' => 'CCCCCC',
},
};
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# cell bits
my $NOTHING = 0x00000000;
my $BLOCKED = 0x00000001;
my $ROOM = 0x00000002;
my $CORRIDOR = 0x00000004;
# 0x00000008;
my $PERIMETER = 0x00000010;
my $ENTRANCE = 0x00000020;
my $ROOM_ID = 0x0000FFC0;
my $ARCH = 0x00010000;
my $DOOR = 0x00020000;
my $LOCKED = 0x00040000;
my $TRAPPED = 0x00080000;
my $SECRET = 0x00100000;
my $PORTC = 0x00200000;
my $STAIR_DN = 0x00400000;
my $STAIR_UP = 0x00800000;
my $LABEL = 0xFF000000;
my $OPENSPACE = $ROOM | $CORRIDOR;
my $DOORSPACE = $ARCH | $DOOR | $LOCKED | $TRAPPED | $SECRET | $PORTC;
my $ESPACE = $ENTRANCE | $DOORSPACE | 0xFF000000;
my $STAIRS = $STAIR_DN | $STAIR_UP;
my $BLOCK_ROOM = $BLOCKED | $ROOM;
my $BLOCK_CORR = $BLOCKED | $PERIMETER | $CORRIDOR;
my $BLOCK_DOOR = $BLOCKED | $DOORSPACE;
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# directions
my $di = { 'north' => -1, 'south' => 1, 'west' => 0, 'east' => 0 };
my $dj = { 'north' => 0, 'south' => 0, 'west' => -1, 'east' => 1 };
my @dj_dirs = sort keys %{ $dj };
my $opposite = {
'north' => 'south',
'south' => 'north',
'west' => 'east',
'east' => 'west'
};
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# stairs
my $stair_end = {
'north' => {
'walled' => [[1,-1],[0,-1],[-1,-1],[-1,0],[-1,1],[0,1],[1,1]],
'corridor' => [[0,0],[1,0],[2,0]],
'stair' => [0,0],
'next' => [1,0],
},
'south' => {
'walled' => [[-1,-1],[0,-1],[1,-1],[1,0],[1,1],[0,1],[-1,1]],
'corridor' => [[0,0],[-1,0],[-2,0]],
'stair' => [0,0],
'next' => [-1,0],
},
'west' => {
'walled' => [[-1,1],[-1,0],[-1,-1],[0,-1],[1,-1],[1,0],[1,1]],
'corridor' => [[0,0],[0,1],[0,2]],
'stair' => [0,0],
'next' => [0,1],
},
'east' => {
'walled' => [[-1,-1],[-1,0],[-1,1],[0,1],[1,1],[1,0],[1,-1]],
'corridor' => [[0,0],[0,-1],[0,-2]],
'stair' => [0,0],
'next' => [0,-1],
},
};
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# cleaning
my $close_end = {
'north' => {
'walled' => [[0,-1],[1,-1],[1,0],[1,1],[0,1]],
'close' => [[0,0]],
'recurse' => [-1,0],
},
'south' => {
'walled' => [[0,-1],[-1,-1],[-1,0],[-1,1],[0,1]],
'close' => [[0,0]],
'recurse' => [1,0],
},
'west' => {
'walled' => [[-1,0],[-1,1],[0,1],[1,1],[1,0]],
'close' => [[0,0]],
'recurse' => [0,-1],
},
'east' => {
'walled' => [[-1,0],[-1,-1],[0,-1],[1,-1],[1,0]],
'close' => [[0,0]],
'recurse' => [0,1],
},
};
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# imaging
my $color_chain = {
'door' => 'fill',
'label' => 'fill',
'stair' => 'wall',
'wall' => 'fill',
'fill' => 'black',
};
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# showtime
my $opts = &get_opts();
my $dungeon = &create_dungeon($opts);
&image_dungeon($dungeon);
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# get dungeon options
sub get_opts {
my $opts = {
'seed' => time(),
'n_rows' => 39, # must be an odd number
'n_cols' => 39, # must be an odd number
'dungeon_layout' => 'None',
'room_min' => 3, # minimum room size
'room_max' => 9, # maximum room size
'room_layout' => 'Scattered', # Packed, Scattered
'corridor_layout' => 'Bent',
'remove_deadends' => 50, # percentage
'add_stairs' => 2, # number of stairs
'map_style' => 'Standard',
'cell_size' => 18, # pixels
};
return $opts;
}
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# create dungeon
sub create_dungeon {
my ($dungeon) = @_;
$dungeon->{'n_i'} = int($dungeon->{'n_rows'} / 2);
$dungeon->{'n_j'} = int($dungeon->{'n_cols'} / 2);
$dungeon->{'n_rows'} = $dungeon->{'n_i'} * 2;
$dungeon->{'n_cols'} = $dungeon->{'n_j'} * 2;
$dungeon->{'max_row'} = $dungeon->{'n_rows'} - 1;
$dungeon->{'max_col'} = $dungeon->{'n_cols'} - 1;
$dungeon->{'n_rooms'} = 0;
my $max = $dungeon->{'room_max'};
my $min = $dungeon->{'room_min'};
$dungeon->{'room_base'} = int(($min + 1) / 2);
$dungeon->{'room_radix'} = int(($max - $min) / 2) + 1;
$dungeon = &init_cells($dungeon);
$dungeon = &emplace_rooms($dungeon);
$dungeon = &open_rooms($dungeon);
$dungeon = &label_rooms($dungeon);
$dungeon = &corridors($dungeon);
$dungeon = &emplace_stairs($dungeon) if ($dungeon->{'add_stairs'});
$dungeon = &clean_dungeon($dungeon);
return $dungeon;
}
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# initialize cells
sub init_cells {
my ($dungeon) = @_;
my $r; for ($r = 0; $r <= $dungeon->{'n_rows'}; $r++) {
my $c; for ($c = 0; $c <= $dungeon->{'n_cols'}; $c++) {
$dungeon->{'cell'}[$r][$c] = $NOTHING;
}
}
srand($dungeon->{'seed'} + 0);
my $mask; if ($mask = $dungeon_layout->{$dungeon->{'dungeon_layout'}}) {
$dungeon = &mask_cells($dungeon,$mask);
} elsif ($dungeon->{'dungeon_layout'} eq 'Round') {
$dungeon = &round_mask($dungeon);
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# mask cells
sub mask_cells {
my ($dungeon,$mask) = @_;
my $r_x = (scalar @{ $mask } * 1.0 / ($dungeon->{'n_rows'} + 1));
my $c_x = (scalar @{ $mask->[0] } * 1.0 / ($dungeon->{'n_cols'} + 1));
my $cell = $dungeon->{'cell'};
my $r; for ($r = 0; $r <= $dungeon->{'n_rows'}; $r++) {
my $c; for ($c = 0; $c <= $dungeon->{'n_cols'}; $c++) {
$cell->[$r][$c] = $BLOCKED unless ($mask->[$r * $r_x][$c * $c_x]);
}
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# round mask
sub round_mask {
my ($dungeon) = @_;
my $center_r = int($dungeon->{'n_rows'} / 2);
my $center_c = int($dungeon->{'n_cols'} / 2);
my $cell = $dungeon->{'cell'};
my $r; for ($r = 0; $r <= $dungeon->{'n_rows'}; $r++) {
my $c; for ($c = 0; $c <= $dungeon->{'n_cols'}; $c++) {
my $d = sqrt((($r - $center_r) ** 2) + (($c - $center_c) ** 2));
$cell->[$r][$c] = $BLOCKED if ($d > $center_c);
}
}
return $dungeon;
}
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# emplace rooms
sub emplace_rooms {
my ($dungeon) = @_;
if ($dungeon->{'room_layout'} eq 'Packed') {
$dungeon = &pack_rooms($dungeon);
} else {
$dungeon = &scatter_rooms($dungeon);
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# pack rooms
sub pack_rooms {
my ($dungeon) = @_;
my $cell = $dungeon->{'cell'};
my $i; for ($i = 0; $i < $dungeon->{'n_i'}; $i++) {
my $r = ($i * 2) + 1;
my $j; for ($j = 0; $j < $dungeon->{'n_j'}; $j++) {
my $c = ($j * 2) + 1;
next if ($cell->[$r][$c] & $ROOM);
next if (($i == 0 || $j == 0) && int(rand(2)));
my $proto = { 'i' => $i, 'j' => $j };
$dungeon = &emplace_room($dungeon,$proto);
}
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# scatter rooms
sub scatter_rooms {
my ($dungeon) = @_;
my $n_rooms = &alloc_rooms($dungeon);
my $i; for ($i = 0; $i < $n_rooms; $i++) {
$dungeon = &emplace_room($dungeon);
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# allocate number of rooms
sub alloc_rooms {
my ($dungeon) = @_;
my $dungeon_area = $dungeon->{'n_cols'} * $dungeon->{'n_rows'};
my $room_area = $dungeon->{'room_max'} * $dungeon->{'room_max'};
my $n_rooms = int($dungeon_area / $room_area);
return $n_rooms;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# emplace room
sub emplace_room {
my ($dungeon,$proto) = @_;
return $dungeon if ($dungeon->{'n_rooms'} == 999);
my ($r,$c);
my $cell = $dungeon->{'cell'};
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# room position and size
$proto = &set_room($dungeon,$proto);
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# room boundaries
my $r1 = ( $proto->{'i'} * 2) + 1;
my $c1 = ( $proto->{'j'} * 2) + 1;
my $r2 = (($proto->{'i'} + $proto->{'height'}) * 2) - 1;
my $c2 = (($proto->{'j'} + $proto->{'width'} ) * 2) - 1;
return $dungeon if ($r1 < 1 || $r2 > $dungeon->{'max_row'});
return $dungeon if ($c1 < 1 || $c2 > $dungeon->{'max_col'});
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# check for collisions with existing rooms
my $hit = &sound_room($dungeon,$r1,$c1,$r2,$c2);
return $dungeon if ($hit->{'blocked'});
my @hit_list = keys %{ $hit };
my $n_hits = scalar @hit_list;
my $room_id;
if ($n_hits == 0) {
$room_id = $dungeon->{'n_rooms'} + 1;
$dungeon->{'n_rooms'} = $room_id;
} else {
return $dungeon;
}
$dungeon->{'last_room_id'} = $room_id;
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# emplace room
for ($r = $r1; $r <= $r2; $r++) {
for ($c = $c1; $c <= $c2; $c++) {
if ($cell->[$r][$c] & $ENTRANCE) {
$cell->[$r][$c] &= ~ $ESPACE;
} elsif ($cell->[$r][$c] & $PERIMETER) {
$cell->[$r][$c] &= ~ $PERIMETER;
}
$cell->[$r][$c] |= $ROOM | ($room_id << 6);
}
}
my $height = (($r2 - $r1) + 1) * 10;
my $width = (($c2 - $c1) + 1) * 10;
my $room_data = {
'id' => $room_id, 'row' => $r1, 'col' => $c1,
'north' => $r1, 'south' => $r2, 'west' => $c1, 'east' => $c2,
'height' => $height, 'width' => $width, 'area' => ($height * $width)
};
$dungeon->{'room'}[$room_id] = $room_data;
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# block corridors from room boundary
# check for door openings from adjacent rooms
for ($r = $r1 - 1; $r <= $r2 + 1; $r++) {
unless ($cell->[$r][$c1 - 1] & ($ROOM | $ENTRANCE)) {
$cell->[$r][$c1 - 1] |= $PERIMETER;
}
unless ($cell->[$r][$c2 + 1] & ($ROOM | $ENTRANCE)) {
$cell->[$r][$c2 + 1] |= $PERIMETER;
}
}
for ($c = $c1 - 1; $c <= $c2 + 1; $c++) {
unless ($cell->[$r1 - 1][$c] & ($ROOM | $ENTRANCE)) {
$cell->[$r1 - 1][$c] |= $PERIMETER;
}
unless ($cell->[$r2 + 1][$c] & ($ROOM | $ENTRANCE)) {
$cell->[$r2 + 1][$c] |= $PERIMETER;
}
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# room position and size
sub set_room {
my ($dungeon,$proto) = @_;
my $base = $dungeon->{'room_base'};
my $radix = $dungeon->{'room_radix'};
unless (defined $proto->{'height'}) {
if (defined $proto->{'i'}) {
my $a = $dungeon->{'n_i'} - $base - $proto->{'i'};
$a = 0 if ($a < 0);
my $r = ($a < $radix) ? $a : $radix;
$proto->{'height'} = int(rand($r)) + $base;
} else {
$proto->{'height'} = int(rand($radix)) + $base;
}
}
unless (defined $proto->{'width'}) {
if (defined $proto->{'j'}) {
my $a = $dungeon->{'n_j'} - $base - $proto->{'j'};
$a = 0 if ($a < 0);
my $r = ($a < $radix) ? $a : $radix;
$proto->{'width'} = int(rand($r)) + $base;
} else {
$proto->{'width'} = int(rand($radix)) + $base;
}
}
unless (defined $proto->{'i'}) {
$proto->{'i'} = int(rand($dungeon->{'n_i'} - $proto->{'height'}));
}
unless (defined $proto->{'j'}) {
$proto->{'j'} = int(rand($dungeon->{'n_j'} - $proto->{'width'}));
}
return $proto;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# sound room
sub sound_room {
my ($dungeon,$r1,$c1,$r2,$c2) = @_;
my $cell = $dungeon->{'cell'};
my $hit;
my $r; for ($r = $r1; $r <= $r2; $r++) {
my $c; for ($c = $c1; $c <= $c2; $c++) {
if ($cell->[$r][$c] & $BLOCKED) {
return { 'blocked' => 1 };
}
if ($cell->[$r][$c] & $ROOM) {
my $id = ($cell->[$r][$c] & $ROOM_ID) >> 6;
$hit->{$id} += 1;
}
}
}
return $hit;
}
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# emplace openings for doors and corridors
sub open_rooms {
my ($dungeon) = @_;
my $id; for ($id = 1; $id <= $dungeon->{'n_rooms'}; $id++) {
$dungeon = &open_room($dungeon,$dungeon->{'room'}[$id]);
}
delete($dungeon->{'connect'});
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# emplace openings for doors and corridors
sub open_room {
my ($dungeon,$room) = @_;
my @list = &door_sills($dungeon,$room);
return $dungeon unless (@list);
my $n_opens = &alloc_opens($dungeon,$room);
my $cell = $dungeon->{'cell'};
my $i; for ($i = 0; $i < $n_opens; $i++) {
my $sill = splice(@list,int(rand(@list)),1);
last unless ($sill);
my $door_r = $sill->{'door_r'};
my $door_c = $sill->{'door_c'};
my $door_cell = $cell->[$door_r][$door_c];
redo if ($door_cell & $DOORSPACE);
my $out_id; if ($out_id = $sill->{'out_id'}) {
my $connect = join(',',(sort($room->{'id'},$out_id)));
redo if ($dungeon->{'connect'}{$connect}++);
}
my $open_r = $sill->{'sill_r'};
my $open_c = $sill->{'sill_c'};
my $open_dir = $sill->{'dir'};
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# open door
my $x; for ($x = 0; $x < 3; $x++) {
my $r = $open_r + ($di->{$open_dir} * $x);
my $c = $open_c + ($dj->{$open_dir} * $x);
$cell->[$r][$c] &= ~ $PERIMETER;
$cell->[$r][$c] |= $ENTRANCE;
}
my $door_type = &door_type();
my $door = { 'row' => $door_r, 'col' => $door_c };
if ($door_type == $ARCH) {
$cell->[$door_r][$door_c] |= $ARCH;
$door->{'key'} = 'arch'; $door->{'type'} = 'Archway';
} elsif ($door_type == $DOOR) {
$cell->[$door_r][$door_c] |= $DOOR;
$cell->[$door_r][$door_c] |= (ord('o') << 24);
$door->{'key'} = 'open'; $door->{'type'} = 'Unlocked Door';
} elsif ($door_type == $LOCKED) {
$cell->[$door_r][$door_c] |= $LOCKED;
$cell->[$door_r][$door_c] |= (ord('x') << 24);
$door->{'key'} = 'lock'; $door->{'type'} = 'Locked Door';
} elsif ($door_type == $TRAPPED) {
$cell->[$door_r][$door_c] |= $TRAPPED;
$cell->[$door_r][$door_c] |= (ord('t') << 24);
$door->{'key'} = 'trap'; $door->{'type'} = 'Trapped Door';
} elsif ($door_type == $SECRET) {
$cell->[$door_r][$door_c] |= $SECRET;
$cell->[$door_r][$door_c] |= (ord('s') << 24);
$door->{'key'} = 'secret'; $door->{'type'} = 'Secret Door';
} elsif ($door_type == $PORTC) {
$cell->[$door_r][$door_c] |= $PORTC;
$cell->[$door_r][$door_c] |= (ord('#') << 24);
$door->{'key'} = 'portc'; $door->{'type'} = 'Portcullis';
}
$door->{'out_id'} = $out_id if ($out_id);
push(@{ $room->{'door'}{$open_dir} },$door) if ($door);
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# allocate number of opens
sub alloc_opens {
my ($dungeon,$room) = @_;
my $room_h = (($room->{'south'} - $room->{'north'}) / 2) + 1;
my $room_w = (($room->{'east'} - $room->{'west'}) / 2) + 1;
my $flumph = int(sqrt($room_w * $room_h));
my $n_opens = $flumph + int(rand($flumph));
return $n_opens;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# list available sills
sub door_sills {
my ($dungeon,$room) = @_;
my $cell = $dungeon->{'cell'};
my @list;
if ($room->{'north'} >= 3) {
my $c; for ($c = $room->{'west'}; $c <= $room->{'east'}; $c += 2) {
my $sill = &check_sill($cell,$room,$room->{'north'},$c,'north');
push(@list,$sill) if ($sill);
}
}
if ($room->{'south'} <= ($dungeon->{'n_rows'} - 3)) {
my $c; for ($c = $room->{'west'}; $c <= $room->{'east'}; $c += 2) {
my $sill = &check_sill($cell,$room,$room->{'south'},$c,'south');
push(@list,$sill) if ($sill);
}
}
if ($room->{'west'} >= 3) {
my $r; for ($r = $room->{'north'}; $r <= $room->{'south'}; $r += 2) {
my $sill = &check_sill($cell,$room,$r,$room->{'west'},'west');
push(@list,$sill) if ($sill);
}
}
if ($room->{'east'} <= ($dungeon->{'n_cols'} - 3)) {
my $r; for ($r = $room->{'north'}; $r <= $room->{'south'}; $r += 2) {
my $sill = &check_sill($cell,$room,$r,$room->{'east'},'east');
push(@list,$sill) if ($sill);
}
}
return &shuffle(@list);
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# check sill
sub check_sill {
my ($cell,$room,$sill_r,$sill_c,$dir) = @_;
my $door_r = $sill_r + $di->{$dir};
my $door_c = $sill_c + $dj->{$dir};
my $door_cell = $cell->[$door_r][$door_c];
return unless ($door_cell & $PERIMETER);
return if ($door_cell & $BLOCK_DOOR);
my $out_r = $door_r + $di->{$dir};
my $out_c = $door_c + $dj->{$dir};
my $out_cell = $cell->[$out_r][$out_c];
return if ($out_cell & $BLOCKED);
my $out_id; if ($out_cell & $ROOM) {
$out_id = ($out_cell & $ROOM_ID) >> 6;
return if ($out_id == $room->{'id'});
}
return {
'sill_r' => $sill_r,
'sill_c' => $sill_c,
'dir' => $dir,
'door_r' => $door_r,
'door_c' => $door_c,
'out_id' => $out_id,
};
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# shuffle list
sub shuffle {
my (@list) = @_;
my @i = (0..((scalar @list) - 1));
my $d = { map { $_ => int(rand(100)) } @i };
@i = sort { $d->{$a} <=> $d->{$b} } @i;
return @list[@i];
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# random door type
sub door_type {
my $i = int(rand(110));
if ($i < 15) {
return $ARCH;
} elsif ($i < 60) {
return $DOOR;
} elsif ($i < 75) {
return $LOCKED;
} elsif ($i < 90) {
return $TRAPPED;
} elsif ($i < 100) {
return $SECRET;
} else {
return $PORTC;
}
}
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# label rooms
sub label_rooms {
my ($dungeon) = @_;
my $cell = $dungeon->{'cell'};
my $id; for ($id = 1; $id <= $dungeon->{'n_rooms'}; $id++) {
my $room = $dungeon->{'room'}[$id];
my $label = "$room->{'id'}";
my $len = length($label);
my $label_r = int(($room->{'north'} + $room->{'south'}) / 2);
my $label_c = int(($room->{'west'} + $room->{'east'} - $len) / 2) + 1;
my $c; for ($c = 0; $c < $len; $c++) {
my $char = substr($label,$c,1);
$cell->[$label_r][$label_c + $c] |= (ord($char) << 24);
}
}
return $dungeon;
}
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# generate corridors
sub corridors {
my ($dungeon) = @_;
my $cell = $dungeon->{'cell'};
my $i; for ($i = 1; $i < $dungeon->{'n_i'}; $i++) {
my $r = ($i * 2) + 1;
my $j; for ($j = 1; $j < $dungeon->{'n_j'}; $j++) {
my $c = ($j * 2) + 1;
next if ($cell->[$r][$c] & $CORRIDOR);
$dungeon = &tunnel($dungeon,$i,$j);
}
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# recursively tunnel
sub tunnel {
my ($dungeon,$i,$j,$last_dir) = @_;
my @dirs = &tunnel_dirs($dungeon,$last_dir);
my $dir; foreach $dir (@dirs) {
if (&open_tunnel($dungeon,$i,$j,$dir)) {
my $next_i = $i + $di->{$dir};
my $next_j = $j + $dj->{$dir};
$dungeon = &tunnel($dungeon,$next_i,$next_j,$dir);
}
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# tunnel directions
sub tunnel_dirs {
my ($dungeon,$last_dir) = @_;
my $p = $corridor_layout->{$dungeon->{'corridor_layout'}};
my @dirs = &shuffle(@dj_dirs);
if ($last_dir && $p) {
unshift(@dirs,$last_dir) if (int(rand(100)) < $p);
}
return @dirs;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# open tunnel
sub open_tunnel {
my ($dungeon,$i,$j,$dir) = @_;
my $this_r = ($i * 2) + 1;
my $this_c = ($j * 2) + 1;
my $next_r = (($i + $di->{$dir}) * 2) + 1;
my $next_c = (($j + $dj->{$dir}) * 2) + 1;
my $mid_r = ($this_r + $next_r) / 2;
my $mid_c = ($this_c + $next_c) / 2;
if (&sound_tunnel($dungeon,$mid_r,$mid_c,$next_r,$next_c)) {
return &delve_tunnel($dungeon,$this_r,$this_c,$next_r,$next_c);
} else {
return 0;
}
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# sound tunnel
# don't open blocked cells, room perimeters, or other corridors
sub sound_tunnel {
my ($dungeon,$mid_r,$mid_c,$next_r,$next_c) = @_;
return 0 if ($next_r < 0 || $next_r > $dungeon->{'n_rows'});
return 0 if ($next_c < 0 || $next_c > $dungeon->{'n_cols'});
my $cell = $dungeon->{'cell'};
my ($r1,$r2) = sort { $a <=> $b } ($mid_r,$next_r);
my ($c1,$c2) = sort { $a <=> $b } ($mid_c,$next_c);
my $r; for ($r = $r1; $r <= $r2; $r++) {
my $c; for ($c = $c1; $c <= $c2; $c++) {
return 0 if ($cell->[$r][$c] & $BLOCK_CORR);
}
}
return 1;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# delve tunnel
sub delve_tunnel {
my ($dungeon,$this_r,$this_c,$next_r,$next_c) = @_;
my $cell = $dungeon->{'cell'};
my ($r1,$r2) = sort { $a <=> $b } ($this_r,$next_r);
my ($c1,$c2) = sort { $a <=> $b } ($this_c,$next_c);
my $r; for ($r = $r1; $r <= $r2; $r++) {
my $c; for ($c = $c1; $c <= $c2; $c++) {
$cell->[$r][$c] &= ~ $ENTRANCE;
$cell->[$r][$c] |= $CORRIDOR;
}
}
return 1;
}
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# emplace stairs
sub emplace_stairs {
my ($dungeon) = @_;
my $n = $dungeon->{'add_stairs'};
return $dungeon unless ($n > 0);
my @list = &stair_ends($dungeon);
return $dungeon unless (@list);
my $cell = $dungeon->{'cell'};
my $i; for ($i = 0; $i < $n; $i++) {
my $stair = splice(@list,int(rand(@list)),1);
last unless ($stair);
my $r = $stair->{'row'};
my $c = $stair->{'col'};
my $type = ($i < 2) ? $i : int(rand(2));
if ($type == 0) {
$cell->[$r][$c] |= $STAIR_DN;
$cell->[$r][$c] |= (ord('d') << 24);
$stair->{'key'} = 'down';
} else {
$cell->[$r][$c] |= $STAIR_UP;
$cell->[$r][$c] |= (ord('u') << 24);
$stair->{'key'} = 'up';
}
push(@{ $dungeon->{'stair'} },$stair);
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# list available ends
sub stair_ends {
my ($dungeon) = @_;
my $cell = $dungeon->{'cell'};
my @list;
my $i; ROW: for ($i = 0; $i < $dungeon->{'n_i'}; $i++) {
my $r = ($i * 2) + 1;
my $j; COL: for ($j = 0; $j < $dungeon->{'n_j'}; $j++) {
my $c = ($j * 2) + 1;
next unless ($cell->[$r][$c] == $CORRIDOR);
next if ($cell->[$r][$c] & $STAIRS);
my $dir; foreach $dir (keys %{ $stair_end }) {
if (&check_tunnel($cell,$r,$c,$stair_end->{$dir})) {
my $end = { 'row' => $r, 'col' => $c };
my $n = $stair_end->{$dir}{'next'};
$end->{'next_row'} = $end->{'row'} + $n->[0];
$end->{'next_col'} = $end->{'col'} + $n->[1];
push(@list,$end); next COL;
}
}
}
}
return @list;
}
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# final clean-up
sub clean_dungeon {
my ($dungeon) = @_;
if ($dungeon->{'remove_deadends'}) {
$dungeon = &remove_deadends($dungeon);
}
$dungeon = &fix_doors($dungeon);
$dungeon = &empty_blocks($dungeon);
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# remove deadend corridors
sub remove_deadends {
my ($dungeon) = @_;
my $p = $dungeon->{'remove_deadends'};
return &collapse_tunnels($dungeon,$p,$close_end);
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# collapse tunnels
sub collapse_tunnels {
my ($dungeon,$p,$xc) = @_;
return $dungeon unless ($p);
my $all = ($p == 100);
my $cell = $dungeon->{'cell'};
my $i; for ($i = 0; $i < $dungeon->{'n_i'}; $i++) {
my $r = ($i * 2) + 1;
my $j; for ($j = 0; $j < $dungeon->{'n_j'}; $j++) {
my $c = ($j * 2) + 1;
next unless ($cell->[$r][$c] & $OPENSPACE);
next if ($cell->[$r][$c] & $STAIRS);
next unless ($all || (int(rand(100)) < $p));
$dungeon = &collapse($dungeon,$r,$c,$xc);
}
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# collapse
sub collapse {
my ($dungeon,$r,$c,$xc) = @_;
my $cell = $dungeon->{'cell'};
unless ($cell->[$r][$c] & $OPENSPACE) {
return $dungeon;
}
my $dir; foreach $dir (keys %{ $xc }) {
if (&check_tunnel($cell,$r,$c,$xc->{$dir})) {
my $p; foreach $p (@{ $xc->{$dir}{'close'} }) {
$cell->[$r+$p->[0]][$c+$p->[1]] = $NOTHING;
}
if ($p = $xc->{$dir}{'open'}) {
$cell->[$r+$p->[0]][$c+$p->[1]] |= $CORRIDOR;
}
if ($p = $xc->{$dir}{'recurse'}) {
$dungeon = &collapse($dungeon,($r+$p->[0]),($c+$p->[1]),$xc);
}
}
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# check tunnel
sub check_tunnel {
my ($cell,$r,$c,$check) = @_;
my $list;
if ($list = $check->{'corridor'}) {
my $p; foreach $p (@{ $list }) {
return 0 unless ($cell->[$r+$p->[0]][$c+$p->[1]] == $CORRIDOR);
}
}
if ($list = $check->{'walled'}) {
my $p; foreach $p (@{ $list }) {
return 0 if ($cell->[$r+$p->[0]][$c+$p->[1]] & $OPENSPACE);
}
}
return 1;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# fix door lists
sub fix_doors {
my ($dungeon) = @_;
my $cell = $dungeon->{'cell'};
my $fixed;
my $room; foreach $room (@{ $dungeon->{'room'} }) {
my $dir; foreach $dir (sort keys %{ $room->{'door'} }) {
my ($door,@shiny); foreach $door (@{ $room->{'door'}{$dir} }) {
my $door_r = $door->{'row'};
my $door_c = $door->{'col'};
my $door_cell = $cell->[$door_r][$door_c];
next unless ($door_cell & $OPENSPACE);
if ($fixed->[$door_r][$door_c]) {
push(@shiny,$door);
} else {
my $out_id; if ($out_id = $door->{'out_id'}) {
my $out_dir = $opposite->{$dir};
push(@{ $dungeon->{'room'}[$out_id]{'door'}{$out_dir} },$door);
}
push(@shiny,$door);
$fixed->[$door_r][$door_c] = 1;
}
}
if (@shiny) {
$room->{'door'}{$dir} = \@shiny;
push(@{ $dungeon->{'door'} },@shiny);
} else {
delete $room->{'door'}{$dir};
}
}
}
return $dungeon;
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -