From 16c8348c82a266d53dde457befd298a62e14bb69 Mon Sep 17 00:00:00 2001
From: John Tsiombikas <nuclear@member.fsf.org>
Date: Thu, 4 Oct 2018 18:24:55 +0300
Subject: [PATCH] skip dumping empty tracks

---
 src/main.cc |    5 ++++-
 src/seq.cc  |    5 +++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/main.cc b/src/main.cc
index cef9fda..fcf4995 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -258,7 +258,10 @@ static void keyboard(unsigned char c, int x, int y)
 		break;
 
 	case '`':
-		dump_seq("seq_dump");
+		printf("dumping animation data to: seq_dump\n");
+		if(!dump_seq("seq_dump")) {
+			fprintf(stderr, "dump failed\n");
+		}
 		break;
 
 	default:
diff --git a/src/seq.cc b/src/seq.cc
index 5be7a65..592abd5 100644
--- a/src/seq.cc
+++ b/src/seq.cc
@@ -196,10 +196,11 @@ bool dump_seq(const char *fname)
 	fprintf(fp, "faros {\n");
 	int ntrk = tracks.size();
 	for(int i=0; i<ntrk; i++) {
+		int nkeys = tracks[i].track->get_num_keys();
+		if(!nkeys) continue;
+
 		fprintf(fp, "  track {\n");
 		fprintf(fp, "    name = \"%s\"\n", tracks[i].name);
-
-		int nkeys = tracks[i].track->get_num_keys();
 		for(int j=0; j<nkeys; j++) {
 			TrackKey key = (*tracks[i].track)[j];
 			fprintf(fp, "    key {\n");
-- 
1.7.10.4