X-Git-Url: http://git.shiar.nl/wormy.git/blobdiff_plain/4a81674950329bfeb881ff6e08792daffd8cf849..60bddabfdddae797faddb681681fafcd4c91a323:/parse-wormedit

diff --git a/parse-wormedit b/parse-wormedit
index 0c94994..ffd68ef 100755
--- a/parse-wormedit
+++ b/parse-wormedit
@@ -77,10 +77,11 @@ if (defined $opt{render}) {
 		# default to all singleplayer levels
 		@request = 0 .. $data->{levelcount}->{single} - 1;
 	}
+	@request or die "no levels found or specified\n";
 
 	my $img = Games::Wormy::Render->composite(
 		map { $data->{levels}->[$_] } @request
-	);
+	) or die "empty result for levels\n";
 	$img->write(
 		$opt{output} ? (file => $opt{output}) : (fh => \*STDOUT, type => 'pnm')
 	) or die $img->errstr;