skip dumping empty tracks

diff --git a/src/main.cc b/src/main.cc
index cef9fda..fcf4995 100644 (file)
--- 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 (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");