altosui: Only update GPS data when new GPS information arrives

Track which telemetry packets are actually producing new GPS
information and only update the GPS average position and count of
stable GPS reports with new GPS info, instead of on every telemetry packet.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/altosui/AltosRecord.java b/altosui/AltosRecord.java
index 486c96b2..4dfa98be 100644
--- a/altosui/AltosRecord.java
+++ b/altosui/AltosRecord.java
@@ -65,6 +65,7 @@ public class AltosRecord implements Comparable <AltosRecord> {
 	int	flight_pres;
 
 	AltosGPS	gps;
+	boolean		new_gps;
 
 	double	time;	/* seconds since boost */
 
@@ -274,6 +275,7 @@ public class AltosRecord implements Comparable <AltosRecord> {
 		speed = old.speed;
 		height = old.height;
 		gps = new AltosGPS(old.gps);
+		new_gps = false;
 		companion = old.companion;
 	}
 
@@ -304,6 +306,7 @@ public class AltosRecord implements Comparable <AltosRecord> {
 		speed = MISSING;
 		height = MISSING;
 		gps = new AltosGPS();
+		new_gps = false;
 		companion = null;
 	}
 }