--- /dev/null
+package Games::Wormy::WormEdit;
+
+use 5.010;
+use strict;
+use warnings;
+
+use Parse::Binary::Nested qw(unpackf);
+
+our $VERSION = '1.00';
+
+our %MAGICID = (
+ "WormEdit053\000LVL" => 53,
+ "WormEdit\34195\000LVL" => 95,
+ "WormEdit\34194\000LVL" => 94,
+ "WormEdit\34193\000LVL" => 93,
+);
+
+sub read {
+ my ($self, $input, $override) = @_;
+ my ($id, $version) = (substr($input, 0, 15), ord substr($input, 15, 1));
+ my $fileversion = $MAGICID{$id}
+ or die "File does not match any known WormEdit level header\n";
+
+ if ($override) {
+ warn "Override version $version to $override\n";
+ $version = $override;
+ }
+ elsif ($version != $fileversion) {
+ warn "Unexpected version $version (expecting $fileversion)\n";
+ }
+ elsif ($version == 95) {
+ # auto-detect exact variant
+ if (ord substr($input, 70, 1) ~~ [1 .. 8]) {
+ # valid sprite length instead of description byte
+ # (which is usually a letter or nul)
+ $version = 94;
+ }
+ elsif (ord substr($input, 147, 1) == 0) {
+ # nul of finish type is 2 bytes later (unlike first char of message)
+ $version = 96;
+ }
+ warn "Ambiguous file version 95; guessing subversion $version\n";
+ };
+
+ $fileversion += 100 if $fileversion < 90; # 93..95 came before 50..53
+
+ my @FORMAT = (
+ magic => 'a15',
+ version => 'C',
+ name => 'C/a32',
+ description => 'C/a64x256',
+ levelcount => [1,
+ single => 'C',
+ multi => 'C',
+ race => 'C',
+ ctf => 'C',
+ total => 'C',
+ ],
+ moderef => [1,
+ map { (start => $_, end => $_) } [1,
+ single => 'C',
+ peaworm => 'C',
+ tron => 'C',
+ deathmatch => 'C',
+ foodmatch => 'C',
+ multifood => 'C',
+ timematch => 'C',
+ race => 'C',
+ ctf => 'C',
+ reserved => 'x',
+ ],
+ ],
+ sprite => ['8C',
+ line => 'B8',
+ ],
+ finish => [1,
+ type => 's',
+ message => 'C/a255',
+ code => 'C/a255',
+ reserved=> 'x256',
+ ],
+ hiname => 'a3',
+ levels => ['*', # levelcount->total actually
+ id => 'C/a22',
+ name => 'C/a22',
+ size => 'C',
+ peas => 'C',
+ delay => 'C',
+ growth => 'C',
+ bsize => 'C',
+ sprite => ['8C',
+ line => 'B8',
+ ],
+ balls => ['32C',
+ y => 'C',
+ x => 'C',
+ dir => 'C',
+ ],
+ worms => [4,
+ d => 'C',
+ y => 'C',
+ x => 'C',
+ ],
+ width => 'C',
+ height => 'C',
+ flags => [2,
+ y => 'C',
+ x => 'C',
+ ],
+ objects => ['128C',
+ type => 'C',
+ x1 => 'C',
+ y1 => 'C',
+ x2 => 'C',
+ y2 => 'C',
+ ],
+ ],
+ );
+
+ given ($fileversion) {
+ when (153) { } # current @FORMAT
+ $FORMAT[7] = 'C/a64'; # no reserved space after description
+ splice @{ $FORMAT[15] }, -2; # finish reserve
+ $FORMAT[-1]->[-1]->[0] = '32C'; # less objects
+ ref $_ and pop @$_ for @{ $FORMAT[11] }; # 9 moderefs
+ when ($version == 96) { }
+ ref $_ and pop @$_ for @{ $FORMAT[11] }; # only 8 moderefs (no ctf)
+ splice @FORMAT, 6, 2 if $version <= 94; # earlier version without description
+ when (95) { }
+ splice @{ $FORMAT[7] }, 4, 2; # no race
+ splice @{ $FORMAT[13] }, 4, 2; # no enddata
+ splice @{ $FORMAT[-1] }, 1, 2; # no name
+ when (94) { }
+ splice @FORMAT, 14, 2; # no hiname
+ $FORMAT[-1]->[0] = 64; # constant amount of levels
+ when (93) { }
+ default {
+ die "Cannot parse data for Wormedit $fileversion/$version\n";
+ }
+ }
+
+ # convert to an easily accessible hash
+ push @FORMAT, -trail => 'a*';
+ my $data = unpackf(\@FORMAT, $input);
+ warn "Trailing data left unparsed\n" if length delete $data->{-trail};
+ $data->{format} = 'WormEdit';
+ return $data;
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Games::Wormy::WormEdit - Read Wormy levelset from a wormedit file
+
+=head1 SYNOPSIS
+
+ my $levelset = Games::Wormy::WormEdit->read($filecontents);
+ print $levelset->{name};
+
+=head1 AUTHOR
+
+Mischa POSLAWSKY <perl@shiar.org>
+
+=head1 LICENSE
+
+LGPL version 3.
+
git.shiar.nl / wormy.git / blobdiff