use warnings;
use List::Util qw(sum min max);
+use Data::Dumper;
sub read {
my ($self, $input) = @_;
- my ($psize, $ptype, $size, $type, $vsize, $dsize, $id, $subid) = unpack q{
+ my ($psize, $ptype, $size, $type, $vsize, $dsize, $id, $version) = unpack q{
x11 x42 # file signature and comment
S a2 S a2 # file size, type; data size, type
x8 # var name
$input = substr $input, 73, -2;
$id eq ord 'w'
or die "Wormy level identifier not found\n";
+
+ if ($opt{version}) {
+ warn "Override version $version to $opt{version}\n";
+ $version = $opt{version};
+ }
+ elsif ($version == 95) {
+ # level offset instead of description byte
+ $version-- if (unpack('x2Z*x2xC', $input))[1] == 0xF4;
+ warn "Ambiguous file version 95; guessing subversion $version\n";
+ }
+
my @FORMAT = (
magic => 'a1',
version => 'C',
x2 => 'C',
y2 => 'C',
);
+ my $offsetbase = 0xF080;
- given ($subid) {
+ given ($version) {
when (97) {
# current @FORMAT
}
- when (95) {
- ref $_ and splice @$_, -2 for @{ $FORMAT[11] }; # only 8 moderefs
+ $offsetbase = 0xF400;
+ when (96) {}
+ ref $_ and splice(@$_, -8, 2) for @{ $FORMAT[11] }; # no multifood
splice @FORMAT, 12, 2; # no reserved byte
+ when (95) {}
+ splice @FORMAT, 6, 2; # no description
+ when (94) {}
+ when (90) {
+ $FORMAT[5] = 'C/a'; # length-preceding name
+ splice @FORMAT, 10, 2; # no default sprite
+ ref $_ and do {
+ $_->[5] = $_->[7]; # no tron; deathmatch instead
+ $_->[7] = $_->[9]; # foodmatch instead
+ $_->[9] = 'linkmatch'; # replaces timematch
+ $_->[11] = $_->[13]; # race
+ $_->[13] = $_->[15]; # ctf
+ $_->[15] = 'domination';
+ } for @{ $FORMAT[9] }; # no multifood
+ push @LEVELFORM, "object$_" => ['C',
+ map {$_ => 'C'} qw(x1 y1 x2 y2)
+ ] for qw(lines boxes);
}
default {
- die "Unsupported level version $subid\n";
+ die "Unsupported level version $version\n";
}
}
my $data = Shiar_Parse::Nested->unpack(\@FORMAT, $input);
my $offset = 0;
- my $offsetbase = 0xF080 + @{ $data->{sprite} } + 1;
+ $offsetbase += 1 + @{ $data->{sprite} } if $data->{sprite};
$data->{moderef}->{offset}->{single} == $offsetbase
or warn "First singleplayer level is not in front\n";
+ my $slots = sum(
+ $data->{moderef}->{end}->{single} > 0, # singleplayer slot if any levels
+ $data->{moderef}->{end}->{peaworm}, # one for each peaworm arena
+ $data->{moderef}->{end}->{tron}, # idem for tron
+ );
+ $data->{hinames} = [ unpack '(x2a3)*', substr($data->{leveldata}, -5 * $slots) ];
+ $data->{format} = '86s';
+
my @VARMODES = (
[qw'single single'],
[qw'multi peaworm tron deathmatch foodmatch multifood timematch'],
$data->{levels} = [];
for my $modes (@VARMODES) {
my $variant = shift @$modes;
- $offset = min(map { $data->{moderef}->{offset}->{$_} } @$modes) - $offsetbase;
- my $amount = $variant eq 'single' ? 100 : max(map { $data->{moderef}->{end}->{$_} } @$modes);
+ my @modeoffsets = grep {defined} #TODO: comment
+ map { $data->{moderef}->{offset}->{$_} } @$modes;
+ @modeoffsets or next;
+ $data->{levelcount}->{$variant} = 0;
+ $offset = min(grep {$_} @modeoffsets) or next;
+ $offset -= $offsetbase;
+ my $amount = $variant eq 'single' ? 100
+ : max(grep {defined} map { $data->{moderef}->{end}->{$_} } @$modes);
my @varform = @LEVELFORM;
$varform[13]->[0] = $variant eq 'single' ? 1 : 4;
- unshift @varform, name => 'Z*' unless $variant eq 'single';
- $varform[-1]->[0] = 1 if $variant eq 'race';
+ unshift @varform, name => 'Z*' unless $variant eq 'single' or $version <= 91;
+ $varform[-1]->[0] = 1 if $variant eq 'race' and $version > 91;
$varform[-1]->[0] = 2 if $variant eq 'ctf';
while ($offset < length $data->{leveldata}) {
# add objects until terminator
$level->{objects} = [];
+ if ($version <= 91) {
+ push @{ $level->{objects} }, { %$_, type => 2 } for map { $level->{$_} ? @{ $level->{$_} } : () } qw(objectlines);
+ push @{ $level->{objects} }, { %$_, type => 3 } for map { $level->{$_} ? @{ $level->{$_} } : () } qw(objectboxes);
+ $size += 1 + 4 * scalar @{ $level->{objects} };
+ }
+ else {
while (my $object = ord substr($data->{leveldata}, $offset+$size, 1)) {
push @{ $level->{objects} }, Shiar_Parse::Nested->unpack(
[@OBJECTFORM], substr($data->{leveldata}, $offset+$size, 5)
);
$size += 5;
}
+ }
# add parsed level and advance
push @{ $data->{levels} }, $level;
$offset += ++$size;
last if ++$data->{levelcount}->{$variant} >= $amount;
}
+
+ if ($variant eq 'single') {
+ $offset++;
+ $data->{finish}->{code} =
+ my $code = substr $data->{leveldata}, $offset, -5*$slots;
+
+ my %FINISHCODE = (
+ 0 => chr 0xC9, # ret
+ 1 => join('',
+ chr 0x21, # ld hl, MESSAGE
+ pack('v', $offsetbase + $offset + 9),
+ (map {chr}
+ 0xCD, 0x37, 0x4A, # call _puts
+ 0xC3, 0xAA, 0x55, # jp _getkey
+ ),
+ ),
+ 2 => join('',
+ (map {chr}
+ 0x21, 0, 0x1C, # ld hl, $POS
+ 0x22, 0x7C, 0xC3, # ld (_penCol), hl
+ 0x21, # ld hl, MESSAGE
+ ),
+ pack('v', $offsetbase + $offset + 15),
+ (map {chr}
+ 0xCD, 0xA5, 0x4A, # call _vputs
+ 0xC3, 0xAA, 0x55, # jp _getkey
+ ),
+ ),
+ );
+ while (my ($finish, $match) = each %FINISHCODE) {
+ $match eq substr $code, 0, length $match or next;
+ $data->{finish}->{type} = $finish and
+ $data->{finish}->{message} = unpack 'Z*', substr($code, length $match);
+ last;
+ }
+ }
}
- my $slots = sum(
- $data->{moderef}->{end}->{single} > 0, # singleplayer slot if any levels
- $data->{moderef}->{end}->{peaworm}, # one for each peaworm arena
- $data->{moderef}->{end}->{tron}, # idem for tron
- );
- $data->{hinames} = [ unpack '(x2a3)*', substr($data->{leveldata}, -5 * $slots) ];
- $data->{finish}->{code} = substr delete($data->{leveldata}), $offset, -5 * $slots; #XXX
- $data->{format} = '86s';
return $data;
}
print "\n";
printf "File version: %s\n", "$data->{format} v$data->{version}";
printf "Defaults: %s\n", join('; ',
- 'sprite ' . scalar @{ $data->{sprite} },
+ $data->{sprite} ? 'sprite ' . scalar @{ $data->{sprite} } : (),
defined $data->{hiname} ? 'hiscore by ' . $data->{hiname} : (),
);
git.shiar.nl / wormy.git / blobdiff