RCRPG/Raku
This Perl 6 version of RCRPG implements a text interface.
Language Idioms
TODO: Note idioms and interesting language features employed.
Commands
As with the Perl version.
Use
As with the Perl version.
Code
Note that this contains workarounds for bugs in niecza which aren't present in rakudo. (It hasn't been added to RCRPG yet, for this reason)
<lang perl6># TODO: Z~, List.pick, fix xx my %commands; my %rooms;
my $room = [0,0,0]; my $stuff = []; my $equipped = ;
sub zip($fun, \$l1, \$l2) {
my @cl2 = $l2;
map { $fun($_, shift @cl2) }, $l1;
}
sub serial_and(*@list) {
my @delims = map { ", " }, @list;
@delims[*-1] = "" if @delims >= 1;
@delims[*-2] = " and " if @delims >= 2;
join "", zip &infix:<~>, @list, @delims;
}
my $WHITE = "\e[0m"; my $GREEN = "\e[32m"; my $BLUE = "\e[34m";
my @random_items = < sledge ladder gold >; my %dir_str =
up => 'in the ceiling',
down => 'in the floor',
map { ($_ => "to the $_") }, <north south east west>;
my %dir_vec =
up => [ 0, 0, 1], down => [ 0, 0,-1], north => [ 0, 1, 0], south => [ 0,-1, 0], east => [ 1, 0, 0], west => [-1, 0, 0];
my %dir_rev = map { ($^a => $^b), $^b => $^a },
< north south east west up down >;
my class Room {
my $next = 0;
has $.stuff = [@random_items[{ $next == $_ && ($next = 0); $next++ }]];
has $.name = "The Unnamed Room";
has $.links = [];
method greet() {
say "You are in room ($room), $.name";
if !$.links {
say "There are no exits from this room. Perhaps you need to make one?";
} elsif $.links == 1 {
say "There is an exit %dir_str{$.links[0]}.";
} else {
say "There are exits {serial_and(@$.links)}.";
}
if $.stuff {
say "There is {serial_and(map { "a $_" }, @$.stuff)} here.";
} else {
say $BLUE, "There is nothing useful here you can take.", $WHITE;
}
say $GREEN, "Try 'help' for help\n", $WHITE;
print ">";
}
}
%rooms{"0 0 0"} = Room.new(name => 'The Start', stuff => [<sledge>]); %rooms{"1 1 5"} = Room.new(name => 'The Prize Room', stuff =>
[<gold gold gold gold gold gold gold gold gold>]);
sub move($dir) {
if $dir eq 'up' && !grep 'ladder', @( %rooms{$room}.stuff ) {
say "There needs to be a ladder in the room before you can climb.";
} elsif grep $dir, @( %rooms{$room}.links ) {
$room = [ zip &infix:<+>, @$room, @(%dir_vec{$dir}) ];
} else {
say "Your way is blocked.";
}
}
sub command(@names, $help, $ct, $sub) {
sub parser(*@bits) {
if @bits[0] eq '_help' || (@bits - 1) !~~ $ct {
say "Usage: {@names.join('|')} $help";
} else {
shift @bits;
$sub.(|@bits);
}
}
for @names { %commands{$_} = &parser }
}
for <north south east west up down> -> $dir {
command [$dir, substr($dir,0,1)], , 0, { move($dir) };
}
command [<attack a>], "(direction)", 1,
-> $dir {
if !(%dir_vec{$dir}:exists) {
say "I don't know that direction. Try: {sort keys %dir_vec}";
}
elsif $equipped ne 'sledge' {
say "You accomplish nothing.";
}
elsif grep $dir, @( %rooms{$room}.links ) {
say "You swing your sledge wildly.";
}
else {
my $r2 = [ zip &infix:<+>, @$room, @(%dir_vec{$dir}) ];
my $r2o = %rooms{$r2} //= Room.new;
say "You bash until the surface crumbles, leaving a hole you can crawl through.";
push @( %rooms{$room}.links ), $dir;
push @( $r2o.links ), %dir_rev{$dir};
}
};
command [<inventory inv i>], "", 0,
{
if !$stuff {
say "You're not carrying anything. Ask again later.";
} else {
say "You have {serial_and(map { "a $_" }, @$stuff)}."
}
};
command [<name>], "(New name of room)", 1 .. *,
-> *@names { %rooms{$room}.name = ~@names };
command [<equip>], "(itemname)", 1,
-> $item {
if grep $item, @$stuff {
$equipped = $item;
say "You equipped your $item. Put it to good use.";
} else {
say "You don't have one of those. Try 'i' to see what you have.";
}
};
sub move_items(@from, @to, @filters) {
sub ok($item) { ?grep { $_ eq 'all' || $_ eq $item }, @filters }
my @move = grep &ok, @from;
push @to, @move;
@from = grep { !ok($_) }, @from;
if $equipped && !grep $equipped, @$stuff {
say "You dropped the item you were using.";
$equipped = ;
}
@move == 0 ?? False !! @move > 1 ?? "{+@move} items" !! "1 item";
}
command [<take>], '{all|(itemname)}', 1 .. *,
-> *@filters {
if move_items(%rooms{$room}.stuff, $stuff, @filters) -> $things {
say "You took $things.";
} else {
say "There aren't any of those here.";
}
};
command [<drop>], '{all|(itemname)}', 1 .. *,
-> *@filters {
if move_items($stuff, %rooms{$room}.stuff, @filters) -> $things {
say "You dropped $things.";
} else {
say "You don't have any of those.";
}
};
command [<help>], "(command name) ... But you apparently discovered that.",
0..1, -> $command? {
if defined $command {
%commands{$command}.("_help");
} else {
say "Valid commands are: ", [ sort keys %commands ];
}
};
command [<alias>], "(existing command name) (additional name for command)",
2, -> $c1, $c2 {
if %commands{$c2}:exists {
say "Can't redefine an existing command!";
} else {
%commands{$c2} = %commands{$c1};
}
};
say "Welcome to Muddy. It's kinda like a MUD, but it lacks multiple players..."; %rooms{$room}.greet;
for $*IN.lines -> $in {
my @args = $in.words;
if @args && %commands{lc @args[0]} -> $fun {
$fun(|@args);
} else {
say "That didn't make any sense. Try 'help'";
}
%rooms{$room}.greet;
} </lang>