Allow NIC=0 UAT traffic. Tweaks to demo traffic.

main/gen_gdl90.go

@@ -609,20 +609,20 @@ func heartBeatSender() {
 
 			// --- debug code: traffic demo ---
 			// Uncomment and compile to display large number of artificial traffic targets
-			/*
-				numTargets := uint32(18)
+				/*
+				numTargets := uint32(36)
 				hexCode := uint32(0xFF0000)
 
 				for i := uint32(0); i < numTargets; i++ {
 					tail := fmt.Sprintf("DEMO%d", i)
 					alt := float32((i*117%2000)*25 + 2000)
 					hdg := int32((i * 149) % 360)
-					spd := float64(50 + ((i*23)%13)*17)
+					spd := float64(50 + ((i*23)%13)*37)
 
 					updateDemoTraffic(i|hexCode, tail, alt, spd, hdg)
 
 				}
-			*/
+				*/
 
 			// ---end traffic demo code ---
 			sendTrafficUpdates()

main/traffic.go

@@ -393,7 +393,7 @@ func parseDownlinkReport(s string, signalLevel int) {
 	lng := float32(0.0)
 
 	position_valid := false
-	if (ti.NIC != 0) && (raw_lat != 0) && (raw_lon != 0) {
+	if /*(ti.NIC != 0) && */(raw_lat != 0) && (raw_lon != 0) { // pass all traffic, and let the display determine if it will show NIC == 0. This will allow misconfigured or uncertified / portable emitters to be seen.
 		position_valid = true
 		lat = float32(raw_lat) * 360.0 / 16777216.0
 		if lat > 90 {
@@ -818,9 +818,9 @@ and speed invalid flag is set for headings 135-150 to allow testing of response
 func updateDemoTraffic(icao uint32, tail string, relAlt float32, gs float64, offset int32) {
 	var ti TrafficInfo
 
-	hdg := float64((int32(stratuxClock.Milliseconds/1000) + offset) % 360)
+	hdg := float64((int32(stratuxClock.Milliseconds/1000) + offset) % 720)/2
 	// gs := float64(220) // knots
-	radius := gs * 0.1 / (2 * math.Pi)
+	radius := gs * 0.2 / (2 * math.Pi)
 	x := radius * math.Cos(hdg*math.Pi/180.0)
 	y := radius * math.Sin(hdg*math.Pi/180.0)
 	// default traffic location is Oshkosh if GPS not detected