add flown loiter radius for fixed wing

src/main/navigation/navigation.c

@@ -5074,5 +5074,12 @@ bool canFwLandingBeCancelled(void)
 {
     return FLIGHT_MODE(NAV_FW_AUTOLAND) && posControl.navState != NAV_STATE_FW_LANDING_FLARE;
 }
-
 #endif
+uint16_t getFlownLoiterRadius(void)
+{
+    if (STATE(AIRPLANE) && navGetCurrentStateFlags() & NAV_CTL_HOLD) {
+        return CENTIMETERS_TO_METERS(calculateDistanceToDestination(&posControl.desiredState.pos));
+    }
+
+    return 0;
+}

src/main/navigation/navigation.h

@@ -694,6 +694,7 @@ bool rthAltControlStickOverrideCheck(uint8_t axis);
 
 int8_t navCheckActiveAngleHoldAxis(void);
 uint8_t getActiveWpNumber(void);
+uint16_t getFlownLoiterRadius(void);
 
 /* Returns the heading recorded when home position was acquired.
  * Note that the navigation system uses deg*100 as unit and angles

src/main/programming/logic_condition.c

@@ -830,6 +830,11 @@ static int logicConditionGetFlightOperandValue(int operand) {
 
         case LOGIC_CONDITION_OPERAND_FLIGHT_LOITER_RADIUS:
             return getLoiterRadius(navConfig()->fw.loiter_radius);
+            break;
+
+        case LOGIC_CONDITION_OPERAND_FLIGHT_FLOWN_LOITER_RADIUS:
+            return getFlownLoiterRadius();
+            break;
 
         case LOGIC_CONDITION_OPERAND_FLIGHT_AGL_STATUS:
             return isEstimatedAglTrusted();

src/main/programming/logic_condition.h

@@ -143,6 +143,7 @@ typedef enum {
     LOGIC_CONDITION_OPERAND_FLIGHT_ATTITUDE_YAW, // deg                     // 40
     LOGIC_CONDITION_OPERAND_FLIGHT_FW_LAND_STATE,                           // 41
     LOGIC_CONDITION_OPERAND_FLIGHT_BATT_PROFILE, // int                     // 42
+    LOGIC_CONDITION_OPERAND_FLIGHT_FLOWN_LOITER_RADIUS,                     // 43
 } logicFlightOperands_e;
 
 typedef enum {