#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;

my $SHOWWARN = 0;
my $SHOWMAP = "head"; # ascii, num, ppm
my $SHOWCOL = 0;

use Getopt::Long;
GetOptions(
	"verbose|v!" => \$SHOWWARN,
	"map|m=s" => \$SHOWMAP,
	"color|c" => \$SHOWCOL,
);

use Data::StarCraft::Map;
my $map = Data::StarCraft::Map->new->open(\*STDIN);
$map->{DEBUG} = 1 if $SHOWWARN;

if ($SHOWMAP ne "ppm") {
	printf("%s size %dx%d, %d player\n",
		$map->version,
		$map->info->{x}, $map->info->{y},
		scalar grep {$_->{id} == 214} $map->units,
	);
	print "\n";
}

if ($SHOWMAP eq "head") {
	if ($map->{STR}) {
		my @str = split /\0/, substr $map->{STR}, 2051;
		$SHOWCOL ? (
			s/([\001-\007])/sprintf '[0;%dm', 30+ord($1)/eg
			and $_ .= ""
		) : s/[\001-\017]//g, print "* $_\n" for @str;
		print "\n";
	}
	printf "%-4s %d\n", $_, defined $map->{$_} ? length $map->{$_} : 0
		for sort keys %$map;
	print "\n";
	printf "%s: %s\n", $_, join ",", unpack "C*", $map->{$_}
		for sort grep { defined $map->{$_} and length $map->{$_} < 32 }
			keys %$map;
	print "\n";
}

sub world {
	my $self = shift;
	# ERA:          0        1        2       3        4      5      6   7
	my @worlds = qw(badlands platform install ashworld jungle desert ice twilight);
	return $worlds[$self->era & 7] || "?";
}

#        MTXM TILE
# ?      ?    yes
# v205 = yes  no

my %mapsep = (
	num => ',',
	ppm => '  ',
	ascii => '',
);

if (defined $mapsep{$SHOWMAP}) {
	my $MAPCHARSEP = $mapsep{$SHOWMAP};

	my $tiles = $SHOWMAP eq "num" ? [ map sprintf('%5d', $_), @{$map->tiles} ]
		: $map->tiles;#_parsed;

	if ($SHOWMAP eq "ppm") {
		use Imager;
		my $img = Imager->new(xsize => $map->width * 4, ysize => $map->width * 4);

		use Data::StarCraft::Tileset;
		my $era = world($map);
		if ($era eq '?') {
			warn 'Tileset '.$map->era.' not recognized; fallback to jungle';
			$era = 'jungle';
		}
		my $tileset = Data::StarCraft::Tileset->open("/home/shiar/sc/tileset_$era")
			or die "No tileset for world $era";

		my ($x, $y) = (0, 0);
		for (@$tiles) {
			# 128x128 ~ 6s
#			my $tile = $tileset->tileavg($_);
#			$img->setpixel(x => $x, y => $y, color => $tile->{col});

			# 512x512 ~ 7s
			my $tile = $tileset->tile($_);
			$img->paste(src => $tile->{sprite}, left => $x*4, top => $y*4);

			# 4096x4096 ~ 75s
#			my $tile = $tileset->sprite($tileset->{map}->[$_]);
#			$img->setscanline(
#				x => $x*32, y => $y*32 + $_, pixels => pack('(CCCx)*',
#					map { @{ $tileset->{palette}->[$_] } } @$tile[$_*32 .. $_*32+31]
#				),
#			) for 0..31;
		}
		continue {
			$x++;
			if ($x >= $map->width) {
				$y++;
				$x = 0;
			}
		}

		$img->write(fd => fileno(STDOUT), type => 'png')
			or die 'Cannot output image: ', $img->errstr;
	}

=cut
	while (my @line = splice @$tiles, 0, $map->width) {
		printf "%s\n", join $MAPCHARSEP, @line;
	}
=cut
}

=head1 scmap

From replay:

	old/screptomap somereplay.rep | ./scmap -m=ppm > map.ppm

From map:

	./scmtomap starcraft/maps/ladder/'(4)Lost Temple.scm'
	./scmap -m=ppm < file000001.xxx > map.ppm

=cut