altoslib: When no boost tick is found, just use first tick in file

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/altoslib/AltosCalData.java b/altoslib/AltosCalData.java
index cb58e4929c3056ada5af4db3b6249d53a9e16932..2eff6ac1188610753c5b38c212183fbf2f0ac405 100644 (file)
--- a/altoslib/AltosCalData.java
+++ b/altoslib/AltosCalData.java
@@ -168,6 +168,7 @@ public class AltosCalData {
        }
 
        public int              tick = AltosLib.MISSING;
+       private int             first_tick = AltosLib.MISSING;
        private int             prev_tick = AltosLib.MISSING;
 
        public void set_tick(int tick) {
@@ -177,6 +178,8 @@ public class AltosCalData {
                                        tick += 65536;
                                }
                        }
+                       if (first_tick == AltosLib.MISSING)
+                               first_tick = tick;
                        prev_tick = tick;
                        this.tick = tick;
                }
@@ -209,9 +212,11 @@ public class AltosCalData {
        public double time() {
                if (tick == AltosLib.MISSING)
                        return AltosLib.MISSING;
-               if (boost_tick == AltosLib.MISSING)
-                       return AltosLib.MISSING;
-               return (tick - boost_tick) / ticks_per_sec;
+               if (boost_tick != AltosLib.MISSING)
+                       return (tick - boost_tick) / ticks_per_sec;
+               if (first_tick != AltosLib.MISSING)
+                       return (tick - first_tick) / ticks_per_sec;
+               return tick / ticks_per_sec;
        }
 
        public double boost_time() {