Suunto app. Name: BeeDistance From Start, Activity: Running, Category: Competion

BeeDistance_From_Start.js

/* http://www.movescount.com/apps/app11024800-BeeDistance_From_Start */
/* https://gist.github.com/rasor/0b326fb2ad208029f036544df9e1b21c */
/* Suunto app. Name: BeeDistance From Start, Activity: Running, Category: Competion*/
/* Description: Calculates Beeline distance to your start GPS point.*/
/* Initialize own vars - set in app 
  prefix = "BDist";
  postfix = "m";
  timerHasBeenStarted = 0;
  startHasBeenSet = 0;
  latStart = -90;
  lonStart = -180;
  lapStartDistanceBeeline = 0; //m. How far is it to start - beeline? 
*/

/* While in sport mode do this once per second*/

if (timerHasBeenStarted == 0) {
	/* check if timer has been started*/
	if ((SUUNTO_DURATION > 0)){ /* || (SUUNTO_DISTANCE > 0)) {*/
		timerHasBeenStarted = 1;
		/* set some constants */

		/* get start position if not read, yet */
		if ((startHasBeenSet == 0) && (SUUNTO_GPS_STATE > 4)) {
	    latStart = SUUNTO_GPS_LATITUDE;
	    lonStart = SUUNTO_GPS_LONGITUDE;
	    startHasBeenSet = 1;
		}
	}
	else{
		/* read position continuesly until timerHasBeenStarted. In this way we have the startpos from before 1 sec had passed*/
		if (SUUNTO_GPS_STATE > 4) {
	    latStart = SUUNTO_GPS_LATITUDE;
	    lonStart = SUUNTO_GPS_LONGITUDE;
	    startHasBeenSet = 1;
		}
	}
}

/* only calculate laps, when GPS is on and timer is started */
if ((timerHasBeenStarted == 1) && (SUUNTO_GPS_STATE > 4)) {
  /* get start position if not read, yet */
	if (startHasBeenSet == 0) {
    latStart = SUUNTO_GPS_LATITUDE;
    lonStart = SUUNTO_GPS_LONGITUDE;
    startHasBeenSet = 1;
	}

  /* calculate laps - start position is now known */
  if (startHasBeenSet == 1) {
    /* look for start */
    lapStartDistanceBeeline = Suunto.distance(latStart, lonStart, SUUNTO_GPS_LATITUDE, SUUNTO_GPS_LONGITUDE);
  }
}

RESULT = lapStartDistanceBeeline;