skip dumping empty tracks

[faros-demo] / src / seq.cc

diff --git a/src/seq.cc b/src/seq.cc
index 5be7a65..592abd5 100644 (file)
--- 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");